diff options
Diffstat (limited to 'ops')
115 files changed, 7968 insertions, 0 deletions
diff --git a/ops/besadii/default.nix b/ops/besadii/default.nix new file mode 100644 index 000000000000..31f2705d7327 --- /dev/null +++ b/ops/besadii/default.nix @@ -0,0 +1,12 @@ +# This program is used as a git post-update hook to trigger builds on +# sourcehut. +{ depot, ... }: + +depot.buildGo.program { + name = "besadii"; + srcs = [ ./main.go ]; + + x_defs = { + "main.gitBin" = "${depot.third_party.git}/bin/git"; + }; +} diff --git a/ops/besadii/main.go b/ops/besadii/main.go new file mode 100644 index 000000000000..72bba769f5d6 --- /dev/null +++ b/ops/besadii/main.go @@ -0,0 +1,203 @@ +// Copyright 2019 Google LLC. +// SPDX-License-Identifier: Apache-2.0 +// +// besadii is a small CLI tool that triggers depot builds on +// builds.sr.ht +// +// It is designed to run as a post-update git hook on the server +// hosting the depot. +package main + +import ( + "bufio" + "bytes" + "encoding/json" + "fmt" + "io/ioutil" + "log/syslog" + "net/http" + "os" + "os/exec" + "strings" +) + +var gitBin = "git" +var branchPrefix = "refs/heads/" + +// This value is set by the git hook invocation when a branch is +// removed, builds should not be triggered in that case. +var deletedBranch = "0000000000000000000000000000000000000000" + +// Represents an updated reference as passed to besadii by git +// +// https://git-scm.com/docs/githooks#pre-receive +type refUpdate struct { + name string + old string + new string +} + +// Represents a builds.sr.ht build object as described on +// https://man.sr.ht/builds.sr.ht/api.md +type Build struct { + Manifest string `json:"manifest"` + Note string `json:"note"` + Tags []string `json:"tags"` +} + +// Represents a build trigger object as described on <the docs for +// this are currently down> +type Trigger struct { + Action string `json:"action"` + Condition string `json:"condition"` + To string `json:"to"` +} + +// Represents a build manifest for sourcehut. +type Manifest struct { + Image string `json:"image"` + Sources []string `json:"sources"` + Secrets []string `json:"secrets"` + Tasks [](map[string]string) `json:"tasks"` + Triggers []Trigger `json:"triggers"` +} + +func prepareManifest(commit string) string { + m := Manifest{ + Image: "nixos/latest", + Sources: []string{"https://git.tazj.in/"}, + + // secret for cachix/tazjin + Secrets: []string{"f7f02546-4d95-44f7-a98e-d61fdded8b5b"}, + + Tasks: [](map[string]string){ + {"setup": `# sourcehut does not censor secrets in builds, hence this hack: +echo -n 'export CACHIX_SIGNING_KEY=' >> ~/.buildenv +cat ~/.cachix-tazjin >> ~/.buildenv +nix-env -iA third_party.cachix -f git.tazj.in +cachix use tazjin +cd git.tazj.in +git checkout ` + commit}, + + {"build": `cd git.tazj.in +nix-build ci-builds.nix > built-paths`}, + + {"cache": `cd git.tazj.in +cat built-paths | cachix push tazjin`}, + }, + + Triggers: []Trigger{ + Trigger{Action: "email", Condition: "failure", To: "mail@tazj.in"}, + }, + } + + j, _ := json.Marshal(m) + return string(j) +} + +// Trigger a build of a given branch & commit on builds.sr.ht +func triggerBuild(log *syslog.Writer, token, branch, commit string) { + build := Build{ + Manifest: prepareManifest(commit), + Note: fmt.Sprintf("Build of '%s' at '%s'", branch, commit), + Tags: []string{ + // my branch names tend to contain slashes, which are not valid + // identifiers in sourcehut. + "depot", strings.ReplaceAll(branch, "/", "_"), + }, + } + + body, _ := json.Marshal(build) + reader := ioutil.NopCloser(bytes.NewReader(body)) + + req, err := http.NewRequest("POST", "https://builds.sr.ht/api/jobs", reader) + if err != nil { + log.Err(fmt.Sprintf("failed to create an HTTP request: %s", err)) + os.Exit(1) + } + + req.Header.Add("Authorization", "token "+token) + req.Header.Add("Content-Type", "application/json") + + resp, err := http.DefaultClient.Do(req) + if err != nil { + // This might indicate a temporary error on the sourcehut side, do + // not fail the whole program. + log.Err(fmt.Sprintf("failed to send builds.sr.ht request:", err)) + return + } + defer resp.Body.Close() + + if resp.StatusCode != 200 { + respBody, _ := ioutil.ReadAll(resp.Body) + log.Err(fmt.Sprintf("received non-success response from builds.sr.ht: %s (%v)", respBody, resp.Status)) + } else { + fmt.Fprintf(log, "triggered builds.sr.ht job for branch '%s' at commit '%s'", branch, commit) + } +} + +func parseRefUpdates() ([]refUpdate, error) { + var updates []refUpdate + + scanner := bufio.NewScanner(os.Stdin) + for scanner.Scan() { + line := scanner.Text() + fragments := strings.Split(line, " ") + + if len(fragments) != 3 { + return nil, fmt.Errorf("invalid ref update: '%s'", line) + } + + update := refUpdate{ + old: fragments[0], + new: fragments[1], + name: fragments[2], + } + + if strings.HasPrefix(update.name, branchPrefix) && update.new != deletedBranch { + update.name = strings.TrimPrefix(update.name, branchPrefix) + updates = append(updates, update) + } + } + + if err := scanner.Err(); err != nil { + return nil, err + } + + return updates, nil +} + +func main() { + log, err := syslog.New(syslog.LOG_INFO|syslog.LOG_USER, "besadii") + if err != nil { + fmt.Printf("failed to open syslog: %s\n", err) + os.Exit(1) + } + + // Before triggering builds, it is important that git + // update-server-info is run so that cgit correctly serves the + // repository. + err = exec.Command(gitBin, "update-server-info").Run() + if err != nil { + log.Alert("failed to run 'git update-server-info' for depot!") + os.Exit(1) + } + + token, err := ioutil.ReadFile("/etc/secrets/srht-token") + if err != nil { + log.Alert("sourcehot token could not be read") + os.Exit(1) + } + + updates, err := parseRefUpdates() + if err != nil { + log.Err(fmt.Sprintf("could not parse updated refs:", err)) + os.Exit(1) + } + + fmt.Fprintf(log, "triggering builds for %v refs", len(updates)) + + for _, update := range updates { + triggerBuild(log, string(token), update.name, update.new) + } +} diff --git a/ops/infra/.skip-subtree b/ops/infra/.skip-subtree new file mode 100644 index 000000000000..cee24b75793c --- /dev/null +++ b/ops/infra/.skip-subtree @@ -0,0 +1,2 @@ +Code under //ops/infra is mostly configuration for other tools, not +Nix derivations to be built. diff --git a/ops/infra/dns/import b/ops/infra/dns/import new file mode 100755 index 000000000000..e79e426b5553 --- /dev/null +++ b/ops/infra/dns/import @@ -0,0 +1,11 @@ +#!/bin/sh +set -ue + +# Imports a zone file into a Google Cloud DNS zone of the same name +readonly ZONE="${1}" + +gcloud dns record-sets import "${ZONE}" \ + --project composite-watch-759 \ + --zone-file-format \ + --delete-all-existing \ + --zone "${ZONE}" diff --git a/ops/infra/dns/kontemplate-works b/ops/infra/dns/kontemplate-works new file mode 100644 index 000000000000..326a129d2105 --- /dev/null +++ b/ops/infra/dns/kontemplate-works @@ -0,0 +1,15 @@ +;; -*- mode: zone; -*- +;; Do not delete these +kontemplate.works. 21600 IN NS ns-cloud-d1.googledomains.com. +kontemplate.works. 21600 IN NS ns-cloud-d2.googledomains.com. +kontemplate.works. 21600 IN NS ns-cloud-d3.googledomains.com. +kontemplate.works. 21600 IN NS ns-cloud-d4.googledomains.com. +kontemplate.works. 21600 IN SOA ns-cloud-d1.googledomains.com. cloud-dns-hostmaster.google.com. 4 21600 3600 259200 300 + +;; Github site setup +kontemplate.works. 60 IN A 185.199.108.153 +kontemplate.works. 60 IN A 185.199.109.153 +kontemplate.works. 60 IN A 185.199.110.153 +kontemplate.works. 60 IN A 185.199.111.153 + +www.kontemplate.works. 60 IN CNAME tazjin.github.io. diff --git a/ops/infra/dns/oslo-pub b/ops/infra/dns/oslo-pub new file mode 100644 index 000000000000..674687484b90 --- /dev/null +++ b/ops/infra/dns/oslo-pub @@ -0,0 +1,8 @@ +;; Do not delete these +oslo.pub. 21600 IN NS ns-cloud-c1.googledomains.com. +oslo.pub. 21600 IN NS ns-cloud-c2.googledomains.com. +oslo.pub. 21600 IN NS ns-cloud-c3.googledomains.com. +oslo.pub. 21600 IN NS ns-cloud-c4.googledomains.com. +oslo.pub. 21600 IN SOA ns-cloud-c1.googledomains.com. cloud-dns-hostmaster.google.com. 4 21600 3600 1209600 300 + +oslo.pub. 60 IN A 46.21.106.241 diff --git a/ops/infra/dns/root-tazj-in b/ops/infra/dns/root-tazj-in new file mode 100644 index 000000000000..43db5834a0ca --- /dev/null +++ b/ops/infra/dns/root-tazj-in @@ -0,0 +1,33 @@ +;; -*- mode: zone; -*- +;; Do not delete these +tazj.in. 21600 IN NS ns-cloud-a1.googledomains.com. +tazj.in. 21600 IN NS ns-cloud-a2.googledomains.com. +tazj.in. 21600 IN NS ns-cloud-a3.googledomains.com. +tazj.in. 21600 IN NS ns-cloud-a4.googledomains.com. +tazj.in. 21600 IN SOA ns-cloud-a1.googledomains.com. cloud-dns-hostmaster.google.com. 123 21600 3600 1209600 300 + +;; Email setup +tazj.in. 300 IN MX 1 aspmx.l.google.com. +tazj.in. 300 IN MX 5 alt1.aspmx.l.google.com. +tazj.in. 300 IN MX 5 alt2.aspmx.l.google.com. +tazj.in. 300 IN MX 10 alt3.aspmx.l.google.com. +tazj.in. 300 IN MX 10 alt4.aspmx.l.google.com. +tazj.in. 300 IN TXT "v=spf1 include:_spf.google.com ~all" +google._domainkey.tazj.in. 21600 IN TXT "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9AphX/WJf8zVXQB5Jk0Ry1MI6ARa6vEyAoJtpjpt9Nbm7XU4qVWFRJm+L0VFd5EZ5YDPJTIZ90lJE3/B8vae2ipnoGbJbj8LaVSzzIPMbWmhPhX3fkLJFdkv7xRDMDn730iYXRlfkgv6GsqbS8vZt7mzxx4mpnePTI323yjRVkwRW8nGVbsmB25ZoG1/0985" "kg4mSYxzWeJ2ozCPFhT4sfMtZMXe/4QEkJz/zkod29KZfFJmLgEaf73WLdBX8kdwbhuh2PYXt/PwzUrRzF5ujVCsSaTZwdRVPErcf+yo4NvedelTjjs8rFVfoJiaDD1q2bQ3w0gDEBWPdC2VP7k9zwIDAQAB" + +;; Site verifications +tazj.in. 3600 IN TXT "keybase-site-verification=gC4kzEmnLzY7F669PjN-pw2Cf__xHqcxQ08Gb-W9dhE" +tazj.in. 300 IN TXT "google-site-verification=d3_MI1OwD6q2OT42Vvh0I9w2u3Q5KFBu-PieNUE1Fig" +www.tazj.in. 3600 IN TXT "keybase-site-verification=ER8m_byyqAhzeIy9TyzkAU1H2p2yHtpvImuB_XrRF2U" + +;; Blog "storage engine" +blog.tazj.in. 21600 IN NS ns-cloud-c1.googledomains.com. +blog.tazj.in. 21600 IN NS ns-cloud-c2.googledomains.com. +blog.tazj.in. 21600 IN NS ns-cloud-c3.googledomains.com. +blog.tazj.in. 21600 IN NS ns-cloud-c4.googledomains.com. + +;; Webpage records setup +tazj.in. 300 IN A 34.98.120.189 +www.tazj.in. 300 IN A 34.98.120.189 +git.tazj.in. 300 IN A 34.98.120.189 +files.tazj.in. 300 IN CNAME c.storage.googleapis.com. diff --git a/ops/infra/gcp/.gitignore b/ops/infra/gcp/.gitignore new file mode 100644 index 000000000000..96c7538dda8a --- /dev/null +++ b/ops/infra/gcp/.gitignore @@ -0,0 +1,3 @@ +.terraform +*.tfstate +*.tfstate.backup diff --git a/ops/infra/gcp/default.tf b/ops/infra/gcp/default.tf new file mode 100644 index 000000000000..d2e31090b560 --- /dev/null +++ b/ops/infra/gcp/default.tf @@ -0,0 +1,116 @@ +# Terraform configuration for the GCP project 'tazjins-infrastructure' + +provider "google" { + project = "tazjins-infrastructure" + region = "europe-north1" + version = "~> 2.20" +} + +# Configure a storage bucket in which to keep Terraform state and +# other data, such as Nixery's layers. +resource "google_storage_bucket" "tazjins-data" { + name = "tazjins-data" + location = "EU" +} + +terraform { + backend "gcs" { + bucket = "tazjins-data" + prefix = "terraform" + } +} + +# Configure enabled APIs +resource "google_project_services" "primary" { + project = "tazjins-infrastructure" + services = [ + "bigquery-json.googleapis.com", + "bigquerystorage.googleapis.com", + "cloudapis.googleapis.com", + "cloudbuild.googleapis.com", + "clouddebugger.googleapis.com", + "cloudfunctions.googleapis.com", + "cloudkms.googleapis.com", + "cloudtrace.googleapis.com", + "compute.googleapis.com", + "container.googleapis.com", + "containerregistry.googleapis.com", + "datastore.googleapis.com", + "distance-matrix-backend.googleapis.com", + "dns.googleapis.com", + "gmail.googleapis.com", + "iam.googleapis.com", + "iamcredentials.googleapis.com", + "logging.googleapis.com", + "monitoring.googleapis.com", + "oslogin.googleapis.com", + "pubsub.googleapis.com", + "run.googleapis.com", + "secretmanager.googleapis.com", + "servicemanagement.googleapis.com", + "serviceusage.googleapis.com", + "sourcerepo.googleapis.com", + "sql-component.googleapis.com", + "storage-api.googleapis.com", + "storage-component.googleapis.com", + ] +} + + +# Configure the main Kubernetes cluster in which services are deployed +resource "google_container_cluster" "primary" { + name = "tazjin-cluster" + location = "europe-north1" + + remove_default_node_pool = true + initial_node_count = 1 +} + +resource "google_container_node_pool" "primary_nodes" { + name = "primary-nodes" + location = "europe-north1" + cluster = google_container_cluster.primary.name + node_count = 1 + + node_config { + preemptible = true + machine_type = "n1-standard-2" + + oauth_scopes = [ + "storage-rw", + "logging-write", + "monitoring", + "https://www.googleapis.com/auth/source.read_only", + ] + } +} + +# Configure a service account for which GCS URL signing keys can be created. +resource "google_service_account" "nixery" { + account_id = "nixery" + display_name = "Nixery service account" +} + +# Configure Cloud KMS for secret encryption +resource "google_kms_key_ring" "tazjins_keys" { + name = "tazjins-keys" + location = "europe-north1" + + lifecycle { + prevent_destroy = true + } +} + +resource "google_kms_crypto_key" "kontemplate_key" { + name = "kontemplate-key" + key_ring = google_kms_key_ring.tazjins_keys.id + + lifecycle { + prevent_destroy = true + } +} + +# Configure the git repository that contains everything. +resource "google_sourcerepo_repository" "depot" { + name = "depot" +} diff --git a/ops/infra/kubernetes/cgit/config.yaml b/ops/infra/kubernetes/cgit/config.yaml new file mode 100644 index 000000000000..73392adaad81 --- /dev/null +++ b/ops/infra/kubernetes/cgit/config.yaml @@ -0,0 +1,80 @@ +--- +apiVersion: v1 +kind: Secret +metadata: + name: gcsr-secrets +type: Opaque +data: + username: "Z2l0LXRhemppbi5nbWFpbC5jb20=" + # This credential is a GCSR 'gitcookie' token. + password: '{{ passLookup "gcsr-tazjin-password" | b64enc }}' + # This credential is an OAuth token for builds.sr.ht + sourcehut: '{{ passLookup "sr.ht-token" | b64enc }}' +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: cgit + labels: + app: cgit +spec: + replicas: 1 + selector: + matchLabels: + app: cgit + template: + metadata: + labels: + app: cgit + spec: + securityContext: + runAsUser: 1000 + runAsGroup: 1000 + fsGroup: 1000 + containers: + - name: cgit + image: nixery.local/shell/web.cgit-taz:{{ gitHEAD }} + command: [ "cgit-launch" ] + env: + - name: HOME + value: /git + volumeMounts: + - name: git-volume + mountPath: /git + - name: sync-gcsr + image: nixery.local/shell/ops.sync-gcsr:{{ gitHEAD }} + command: [ "sync-gcsr" ] + env: + - name: SYNC_USER + valueFrom: + secretKeyRef: + name: gcsr-secrets + key: username + - name: SYNC_PASS + valueFrom: + secretKeyRef: + name: gcsr-secrets + key: password + - name: SRHT_TOKEN + valueFrom: + secretKeyRef: + name: gcsr-secrets + key: sourcehut + volumeMounts: + - name: git-volume + mountPath: /git + volumes: + - name: git-volume + emptyDir: {} +--- +apiVersion: v1 +kind: Service +metadata: + name: cgit +spec: + selector: + app: cgit + ports: + - protocol: TCP + port: 80 + targetPort: 8080 diff --git a/ops/infra/kubernetes/gemma/config.lisp b/ops/infra/kubernetes/gemma/config.lisp new file mode 100644 index 000000000000..517a658cf150 --- /dev/null +++ b/ops/infra/kubernetes/gemma/config.lisp @@ -0,0 +1,19 @@ +(config :port 4242 + :data-dir "/var/lib/gemma/") + +(deftask bathroom/wipe-mirror 7) +(deftask bathroom/wipe-counter 7) + +;; Bedroom tasks +(deftask bedroom/change-sheets 7) +(deftask bedroom/vacuum 10) + +;; Kitchen tasks +(deftask kitchen/normal-trash 3) +(deftask kitchen/green-trash 5) +(deftask kitchen/blue-trash 5) +(deftask kitchen/wipe-counters 3) +(deftask kitchen/vacuum 5 "Kitchen has more crumbs and such!") + +;; Entire place +(deftask clean-windows 60) diff --git a/ops/infra/kubernetes/https-cert/cert.yaml b/ops/infra/kubernetes/https-cert/cert.yaml new file mode 100644 index 000000000000..c7a85275ae67 --- /dev/null +++ b/ops/infra/kubernetes/https-cert/cert.yaml @@ -0,0 +1,8 @@ +--- +apiVersion: networking.gke.io/v1beta1 +kind: ManagedCertificate +metadata: + name: {{ .domain | replace "." "-" }} +spec: + domains: + - {{ .domain }} diff --git a/ops/infra/kubernetes/https-lb/ingress.yaml b/ops/infra/kubernetes/https-lb/ingress.yaml new file mode 100644 index 000000000000..930affec7a15 --- /dev/null +++ b/ops/infra/kubernetes/https-lb/ingress.yaml @@ -0,0 +1,43 @@ +# This resource configures the HTTPS load balancer that is used as the +# entrypoint to all HTTPS services running in the cluster. +--- +apiVersion: extensions/v1beta1 +kind: Ingress +metadata: + name: https-ingress + annotations: + networking.gke.io/managed-certificates: tazj-in, git-tazj-in, www-tazj-in, oslo-pub +spec: + rules: + # Route website to, well, the website ... + - host: tazj.in + http: + paths: + - path: /* + backend: + serviceName: website + servicePort: 8080 + # Same for www.* (the redirect is handled by the website nginx) + - host: www.tazj.in + http: + paths: + - path: /* + backend: + serviceName: website + servicePort: 8080 + # Route git.tazj.in to the cgit pods + - host: git.tazj.in + http: + paths: + - path: /* + backend: + serviceName: nginx + servicePort: 6756 + # Route oslo.pub to the nginx instance which serves redirects + - host: oslo.pub + http: + paths: + - path: / + backend: + serviceName: nginx + servicePort: 6756 diff --git a/ops/infra/kubernetes/nginx/nginx.conf b/ops/infra/kubernetes/nginx/nginx.conf new file mode 100644 index 000000000000..918aa6067806 --- /dev/null +++ b/ops/infra/kubernetes/nginx/nginx.conf @@ -0,0 +1,59 @@ +daemon off; +worker_processes 1; +error_log stderr; +pid /run/nginx.pid; + +events { + worker_connections 1024; +} + +http { + log_format json_combined escape=json + '{' + '"time_local":"$time_local",' + '"remote_addr":"$remote_addr",' + '"remote_user":"$remote_user",' + '"request":"$request",' + '"status": "$status",' + '"body_bytes_sent":"$body_bytes_sent",' + '"request_time":"$request_time",' + '"http_referrer":"$http_referer",' + '"http_user_agent":"$http_user_agent"' + '}'; + + access_log /dev/stdout json_combined; + + sendfile on; + keepalive_timeout 65; + + server { + listen 80 default_server; + location / { + return 200 "ok"; + } + } + + server { + listen 80; + server_name oslo.pub; + + location / { + return 302 https://www.google.com/maps/d/viewer?mid=1pJIYY9cuEdt9DuMTbb4etBVq7hs; + } + } + + server { + listen 80; + server_name git.tazj.in; + + # Static assets must always hit the root. + location ~ ^/(favicon\.ico|cgit\.(css|png))$ { + proxy_pass http://cgit; + } + + # Everything else hits the depot directly. + location / { + proxy_pass http://cgit/cgit.cgi/depot/; + } + } +} diff --git a/ops/infra/kubernetes/nginx/nginx.yaml b/ops/infra/kubernetes/nginx/nginx.yaml new file mode 100644 index 000000000000..61678a85bca0 --- /dev/null +++ b/ops/infra/kubernetes/nginx/nginx.yaml @@ -0,0 +1,60 @@ +# Deploy an nginx instance which serves ... redirects. +--- +apiVersion: v1 +kind: ConfigMap +metadata: + name: nginx-conf +data: + nginx.conf: {{ insertFile "nginx.conf" | toJson }} +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: nginx + labels: + app: nginx +spec: + replicas: 2 + selector: + matchLabels: + app: nginx + template: + metadata: + labels: + app: nginx + config: {{ insertFile "nginx.conf" | sha1sum }} + spec: + containers: + - name: nginx + image: nixery.local/shell/third_party.nginx:{{ .version }} + command: ["/bin/bash", "-c"] + args: + - | + cd /run + echo 'nogroup:x:30000:nobody' >> /etc/group + echo 'nobody:x:30000:30000:nobody:/tmp:/bin/bash' >> /etc/passwd + exec nginx -c /etc/nginx/nginx.conf + volumeMounts: + - name: nginx-conf + mountPath: /etc/nginx + - name: nginx-rundir + mountPath: /run + volumes: + - name: nginx-conf + configMap: + name: nginx-conf + - name: nginx-rundir + emptyDir: {} +--- +apiVersion: v1 +kind: Service +metadata: + name: nginx +spec: + type: NodePort + selector: + app: nginx + ports: + - protocol: TCP + port: 6756 + targetPort: 80 diff --git a/ops/infra/kubernetes/nixery/config.yaml b/ops/infra/kubernetes/nixery/config.yaml new file mode 100644 index 000000000000..0775e79b5843 --- /dev/null +++ b/ops/infra/kubernetes/nixery/config.yaml @@ -0,0 +1,67 @@ +# Deploys an instance of Nixery into the cluster. +# +# The service via which Nixery is exposed has a private DNS entry +# pointing to it, which makes it possible to resolve `nixery.local` +# in-cluster without things getting nasty. +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: nixery + namespace: kube-public + labels: + app: nixery +spec: + replicas: 1 + selector: + matchLabels: + app: nixery + template: + metadata: + labels: + app: nixery + spec: + containers: + - name: nixery + image: eu.gcr.io/tazjins-infrastructure/nixery:{{ .version }} + volumeMounts: + - name: nixery-secrets + mountPath: /var/nixery + env: + - name: BUCKET + value: {{ .bucket}} + - name: PORT + value: "{{ .port }}" + - name: GOOGLE_APPLICATION_CREDENTIALS + value: /var/nixery/gcs-key.json + - name: GCS_SIGNING_KEY + value: /var/nixery/gcs-key.pem + - name: GCS_SIGNING_ACCOUNT + value: {{ .account }} + - name: GIT_SSH_COMMAND + value: 'ssh -F /var/nixery/ssh_config' + - name: NIXERY_PKGS_REPO + value: {{ .repo }} + - name: NIX_POPULARITY_URL + value: 'https://storage.googleapis.com/nixery-layers/popularity/{{ .popularity }}' + volumes: + - name: nixery-secrets + secret: + secretName: nixery-secrets + defaultMode: 256 +--- +apiVersion: v1 +kind: Service +metadata: + name: nixery + namespace: kube-public + annotations: + cloud.google.com/load-balancer-type: "Internal" +spec: + selector: + app: nixery + type: LoadBalancer + ports: + - protocol: TCP + port: 80 + targetPort: 8080 diff --git a/ops/infra/kubernetes/nixery/id_nixery.pub b/ops/infra/kubernetes/nixery/id_nixery.pub new file mode 100644 index 000000000000..dc3fd617d0a1 --- /dev/null +++ b/ops/infra/kubernetes/nixery/id_nixery.pub @@ -0,0 +1 @@ +ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCzBM6ydst77jDHNcTFWKD9Fw4SReqyNEEp2MtQBk2wt94U4yLp8MQIuNeOEn1GaDEX4RGCxqai/2UVF1w9ZNdU+v2fXcKWfkKuGQH2XcNfXor2cVNObd40H78++iZiv3nmM/NaEdkTbTBbi925cRy9u5FgItDgsJlyKNRglCb0fr6KlgpvWjL20dp/eeZ8a/gLniHK8PnEsgERQSvJnsyFpxxVhxtoUiyLWpXDl4npf/rQr0eRDf4Q5sN/nbTwksapPHfze8dKcaoA7A2NqT3bJ6DPGrwVCzGRtGw/SXJwFwmmtAl9O6BklpeReyiknSxc+KOtrjDW6O0r6yvymD5Z nixery diff --git a/ops/infra/kubernetes/nixery/known_hosts b/ops/infra/kubernetes/nixery/known_hosts new file mode 100644 index 000000000000..7faf21f69bf8 --- /dev/null +++ b/ops/infra/kubernetes/nixery/known_hosts @@ -0,0 +1,3 @@ +github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ== 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actually secret (see the matching) +--- +apiVersion: v1 +kind: Secret +metadata: + name: nixery-secrets + namespace: kube-public +type: Opaque +data: + gcs-key.json: {{ passLookup "nixery-gcs-json" | b64enc }} + gcs-key.pem: {{ passLookup "nixery-gcs-pem" | b64enc }} + id_nixery: {{ printf "%s\n" (passLookup "nixery-ssh-private") | b64enc }} + id_nixery.pub: {{ insertFile "id_nixery.pub" | b64enc }} + known_hosts: {{ insertFile "known_hosts" | b64enc }} + ssh_config: {{ insertFile "ssh_config" | b64enc }} diff --git a/ops/infra/kubernetes/nixery/ssh_config b/ops/infra/kubernetes/nixery/ssh_config new file mode 100644 index 000000000000..78afbb0b039d --- /dev/null +++ b/ops/infra/kubernetes/nixery/ssh_config @@ -0,0 +1,4 @@ +Match host * + User tazjin@google.com + IdentityFile /var/nixery/id_nixery + UserKnownHostsFile /var/nixery/known_hosts diff --git a/ops/infra/kubernetes/primary-cluster.yaml b/ops/infra/kubernetes/primary-cluster.yaml new file mode 100644 index 000000000000..3d601b80cd01 --- /dev/null +++ b/ops/infra/kubernetes/primary-cluster.yaml @@ -0,0 +1,38 @@ +# Kontemplate configuration for the primary GKE cluster in the project +# 'tazjins-infrastructure'. +--- +context: gke_tazjins-infrastructure_europe-north1_tazjin-cluster +include: + # SSL certificates (provisioned by Google) + - name: tazj-in-cert + path: https-cert + values: + domain: tazj.in + - name: www-tazj-in-cert + path: https-cert + values: + domain: www.tazj.in + - name: git-tazj-in-cert + path: https-cert + values: + domain: git.tazj.in + - name: oslo-pub-cert + path: https-cert + values: + domain: oslo.pub + + # Services + - name: nixery + values: + port: 8080 + version: xkm36vrbcnzxdccybzdrx4qzfcfqfrhg + bucket: tazjins-data + account: nixery@tazjins-infrastructure.iam.gserviceaccount.com + repo: ssh://tazjin@gmail.com@source.developers.google.com:2022/p/tazjins-infrastructure/r/depot + popularity: 'popularity-nixos-unstable-3140fa89c51233397f496f49014f6b23216667c2.json' + - name: website + - name: cgit + - name: https-lb + - name: nginx + values: + version: a349d5e9145ae9a6c89f62ec631f01fb180de546 diff --git a/ops/infra/kubernetes/website/config.yaml b/ops/infra/kubernetes/website/config.yaml new file mode 100644 index 000000000000..02de735b05d0 --- /dev/null +++ b/ops/infra/kubernetes/website/config.yaml @@ -0,0 +1,37 @@ +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: website + labels: + app: website +spec: + replicas: 3 + selector: + matchLabels: + app: website + template: + metadata: + labels: + app: website + spec: + containers: + - name: website + image: nixery.local/shell/web.homepage:{{ gitHEAD }} + env: + - name: CONTAINER_SETUP + value: "true" + command: [ "homepage" ] +--- +apiVersion: v1 +kind: Service +metadata: + name: website +spec: + type: NodePort + selector: + app: website + ports: + - protocol: TCP + port: 8080 + targetPort: 8080 diff --git 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+env_logger = "0.5" +failure = "0.1" +lazy_static = "1.0" +log = "0.4" +medallion = "2.2" +serde = "1.0" +serde_derive = "1.0" +serde_json = "1.0" +systemd = "0.3" +ureq = { version = "0.6.2", features = [ "json" ]} + +[build-dependencies] +pkg-config = "0.3" diff --git a/ops/journaldriver/README.md b/ops/journaldriver/README.md new file mode 100644 index 000000000000..4dc9de0f617b --- /dev/null +++ b/ops/journaldriver/README.md @@ -0,0 +1,152 @@ +journaldriver +============= + +This is a small daemon used to forward logs from `journald` (systemd's +logging service) to [Stackdriver Logging][]. + +Many existing log services are written in inefficient dynamic +languages with error-prone "cover every possible use-case" +configuration. `journaldriver` instead aims to fit a specific use-case +very well, instead of covering every possible logging setup. + +`journaldriver` can be run on GCP-instances with no additional +configuration as authentication tokens are retrieved from the +[metadata server][]. + +<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc --> +**Table of Contents** + +- [Features](#features) +- [Usage on Google Cloud Platform](#usage-on-google-cloud-platform) +- [Usage outside of Google Cloud Platform](#usage-outside-of-google-cloud-platform) +- [Log levels / severities / priorities](#log-levels--severities--priorities) +- [NixOS module](#nixos-module) +- [Stackdriver Error Reporting](#stackdriver-error-reporting) + +<!-- markdown-toc end --> + +# Features + +* `journaldriver` persists the last forwarded position in the journal + and will resume forwarding at the same position after a restart +* `journaldriver` will recognise log entries in JSON format and + forward them appropriately to make structured log entries available + in Stackdriver +* `journaldriver` can be used outside of GCP by configuring static + credentials +* `journaldriver` will recognise journald's log priority levels and + convert them into equivalent Stackdriver log severity levels + +# Usage on Google Cloud Platform + +`journaldriver` does not require any configuration when running on GCP +instances. + +1. Install `journaldriver` on the instance from which you wish to + forward logs. + +2. Ensure that the instance has the appropriate permissions to write + to Stackdriver. Google continously changes how IAM is implemented + on GCP, so you will have to refer to [Google's documentation][]. + + By default instances have the required permissions if Stackdriver + Logging support is enabled in the project. + +3. Start `journaldriver`, for example via `systemd`. + +# Usage outside of Google Cloud Platform + +When running outside of GCP, the following extra steps need to be +performed: + +1. Create a Google Cloud Platform service account with the "Log + Writer" role and download its private key in JSON-format. +2. When starting `journaldriver`, configure the following environment + variables: + + * `GOOGLE_CLOUD_PROJECT`: Name of the GCP project to which logs + should be written. + * `GOOGLE_APPLICATION_CREDENTIALS`: Filesystem path to the + JSON-file containing the service account's private key. + * `LOG_STREAM`: Name of the target log stream in Stackdriver Logging. + This will be automatically created if it does not yet exist. + * `LOG_NAME`: Name of the target log to write to. This defaults to + `journaldriver` if unset, but it is recommended to - for + example - set it to the machine hostname. + +# Log levels / severities / priorities + +`journaldriver` recognises [journald's priorities][] and converts them +into [equivalent severities][] in Stackdriver. Both sets of values +correspond to standard `syslog` priorities. + +The easiest way to emit log messages with priorites from an +application is to use [priority prefixes][], which are compatible with +structured log messages. + +For example, to emit a simple warning message (structured and +unstructured): + +``` +$ echo '<4>{"fnord":true, "msg":"structured log (warning)"}' | systemd-cat +$ echo '<4>unstructured log (warning)' | systemd-cat +``` + +# NixOS module + +The NixOS package repository [contains a module][] for setting up +`journaldriver` on NixOS machines. NixOS by default uses `systemd` for +service management and `journald` for logging, which means that log +output from most services will be captured automatically. + +On a GCP instance the only required option is this: + +```nix +services.journaldriver.enable = true; +``` + +When running outside of GCP, the configuration looks as follows: + +```nix +services.journaldriver = { + enable = true; + logStream = "prod-environment"; + logName = "hostname"; + googleCloudProject = "gcp-project-name"; + applicationCredentials = keyFile; +}; +``` + +**Note**: The `journaldriver`-module is included in stable releases of +NixOS since NixOS 18.09. + +# Stackdriver Error Reporting + +The [Stackdriver Error Reporting][] service of Google's monitoring +toolbox supports automatically detecting and correlating errors from +log entries. + +To use this functionality log messages must be logged in the expected +[log format][]. + +*Note*: Reporting errors from non-GCP instances requires that the +`LOG_STREAM` environment variable is set to the special value +`global`. + +This value changes the monitored resource descriptor from a log stream +to the project-global stream. Due to a limitation in Stackdriver Error +Reporting, this is the only way to correctly ingest errors from +non-GCP machines. Please see [issue #4][] for more information about +this. + +[Stackdriver Logging]: https://cloud.google.com/logging/ +[metadata server]: https://cloud.google.com/compute/docs/storing-retrieving-metadata +[Google's documentation]: https://cloud.google.com/logging/docs/access-control +[NixOS]: https://nixos.org/ +[contains a module]: https://github.com/NixOS/nixpkgs/pull/42134 +[journald's priorities]: http://0pointer.de/public/systemd-man/sd-daemon.html +[equivalent severities]: https://cloud.google.com/logging/docs/reference/v2/rest/v2/LogEntry#logseverity +[priority prefixes]: http://0pointer.de/public/systemd-man/sd-daemon.html +[Stackdriver Error Reporting]: https://cloud.google.com/error-reporting/ +[log format]: https://cloud.google.com/error-reporting/docs/formatting-error-messages +[issue #4]: https://github.com/tazjin/journaldriver/issues/4 diff --git a/ops/journaldriver/build.rs b/ops/journaldriver/build.rs new file mode 100644 index 000000000000..d64c82a88a71 --- /dev/null +++ b/ops/journaldriver/build.rs @@ -0,0 +1,6 @@ +extern crate pkg_config; + +fn main() { + pkg_config::probe_library("libsystemd") + .expect("Could not probe libsystemd"); +} diff --git a/ops/journaldriver/default.nix b/ops/journaldriver/default.nix new file mode 100644 index 000000000000..cc274094a962 --- /dev/null +++ b/ops/journaldriver/default.nix @@ -0,0 +1,11 @@ +{ depot, ... }: + +with depot.third_party; + +naersk.buildPackage { + src = ./.; + + buildInputs = [ + pkgconfig openssl systemd.dev + ]; +} diff --git a/ops/journaldriver/src/main.rs b/ops/journaldriver/src/main.rs new file mode 100644 index 000000000000..a57bb3505ddc --- /dev/null +++ b/ops/journaldriver/src/main.rs @@ -0,0 +1,665 @@ +// Copyright (C) 2018 Vincent Ambo <mail@tazj.in> +// +// journaldriver is free software: you can redistribute it and/or +// modify it under the terms of the GNU General Public License as +// published by the Free Software Foundation, either version 3 of the +// License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. + +//! This file implements journaldriver, a small application that +//! forwards logs from journald (systemd's log facility) to +//! Stackdriver Logging. +//! +//! Log entries are read continously from journald and are forwarded +//! to Stackdriver in batches. +//! +//! Stackdriver Logging has a concept of monitored resources. In the +//! simplest case this monitored resource will be the GCE instance on +//! which journaldriver is running. +//! +//! Information about the instance, the project and required security +//! credentials are retrieved from Google's metadata instance on GCP. +//! +//! To run journaldriver on non-GCP machines, users must specify the +//! `GOOGLE_APPLICATION_CREDENTIALS`, `GOOGLE_CLOUD_PROJECT` and +//! `LOG_NAME` environment variables. + +#[macro_use] extern crate failure; +#[macro_use] extern crate log; +#[macro_use] extern crate serde_derive; +#[macro_use] extern crate serde_json; +#[macro_use] extern crate lazy_static; + +extern crate chrono; +extern crate env_logger; +extern crate medallion; +extern crate serde; +extern crate systemd; +extern crate ureq; + +use chrono::offset::LocalResult; +use chrono::prelude::*; +use failure::ResultExt; +use serde_json::{from_str, Value}; +use std::env; +use std::fs::{self, File, rename}; +use std::io::{self, Read, ErrorKind, Write}; +use std::mem; +use std::path::PathBuf; +use std::process; +use std::time::{Duration, Instant}; +use systemd::journal::*; + +#[cfg(test)] +mod tests; + +const LOGGING_SERVICE: &str = "https://logging.googleapis.com/google.logging.v2.LoggingServiceV2"; +const ENTRIES_WRITE_URL: &str = "https://logging.googleapis.com/v2/entries:write"; +const METADATA_TOKEN_URL: &str = "http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token"; +const METADATA_ID_URL: &str = "http://metadata.google.internal/computeMetadata/v1/instance/id"; +const METADATA_ZONE_URL: &str = "http://metadata.google.internal/computeMetadata/v1/instance/zone"; +const METADATA_PROJECT_URL: &str = "http://metadata.google.internal/computeMetadata/v1/project/project-id"; + +/// Convenience type alias for results using failure's `Error` type. +type Result<T> = std::result::Result<T, failure::Error>; + +/// Representation of static service account credentials for GCP. +#[derive(Debug, Deserialize)] +struct Credentials { + /// PEM encoded private key + private_key: String, + + /// `kid` of this private key + private_key_id: String, + + /// "email" address of the service account + client_email: String, +} + +lazy_static! { + /// ID of the GCP project to which to send logs. + static ref PROJECT_ID: String = get_project_id(); + + /// Name of the log to write to (this should only be manually + /// configured if not running on GCP): + static ref LOG_NAME: String = env::var("LOG_NAME") + .unwrap_or("journaldriver".into()); + + /// Service account credentials (if configured) + static ref SERVICE_ACCOUNT_CREDENTIALS: Option<Credentials> = + env::var("GOOGLE_APPLICATION_CREDENTIALS").ok() + .and_then(|path| File::open(path).ok()) + .and_then(|file| serde_json::from_reader(file).ok()); + + /// Descriptor of the currently monitored instance. Refer to the + /// documentation of `determine_monitored_resource` for more + /// information. + static ref MONITORED_RESOURCE: Value = determine_monitored_resource(); + + /// Path to the directory in which journaldriver should persist + /// its cursor state. + static ref CURSOR_DIR: PathBuf = env::var("CURSOR_POSITION_DIR") + .unwrap_or("/var/lib/journaldriver".into()) + .into(); + + /// Path to the cursor position file itself. + static ref CURSOR_FILE: PathBuf = { + let mut path = CURSOR_DIR.clone(); + path.push("cursor.pos"); + path + }; + + /// Path to the temporary file used for cursor position writes. + static ref CURSOR_TMP_FILE: PathBuf = { + let mut path = CURSOR_DIR.clone(); + path.push("cursor.tmp"); + path + }; +} + +/// Convenience helper for retrieving values from the metadata server. +fn get_metadata(url: &str) -> Result<String> { + let response = ureq::get(url) + .set("Metadata-Flavor", "Google") + .timeout_connect(5000) + .timeout_read(5000) + .call(); + + if response.ok() { + // Whitespace is trimmed to remove newlines from responses. + let body = response.into_string() + .context("Failed to decode metadata response")? + .trim().to_string(); + + Ok(body) + } else { + let status = response.status_line().to_string(); + let body = response.into_string() + .unwrap_or_else(|e| format!("Metadata body error: {}", e)); + bail!("Metadata failure: {} ({})", body, status) + } +} + +/// Convenience helper for determining the project ID. +fn get_project_id() -> String { + env::var("GOOGLE_CLOUD_PROJECT") + .map_err(Into::into) + .or_else(|_: failure::Error| get_metadata(METADATA_PROJECT_URL)) + .expect("Could not determine project ID") +} + +/// Determines the monitored resource descriptor used in Stackdriver +/// logs. On GCP this will be set to the instance ID as returned by +/// the metadata server. +/// +/// On non-GCP machines the value is determined by using the +/// `GOOGLE_CLOUD_PROJECT` and `LOG_STREAM` environment variables. +/// +/// [issue #4]: https://github.com/tazjin/journaldriver/issues/4 +fn determine_monitored_resource() -> Value { + if let Ok(log) = env::var("LOG_STREAM") { + // The special value `global` is recognised as a log stream name that + // results in a `global`-type resource descriptor. This is useful in + // cases where Stackdriver Error Reporting is intended to be used on + // a non-GCE instance. See [issue #4][] for details. + if log == "global" { + return json!({ + "type": "global", + "labels": { + "project_id": PROJECT_ID.as_str(), + } + }); + } + + json!({ + "type": "logging_log", + "labels": { + "project_id": PROJECT_ID.as_str(), + "name": log, + } + }) + } else { + let instance_id = get_metadata(METADATA_ID_URL) + .expect("Could not determine instance ID"); + + let zone = get_metadata(METADATA_ZONE_URL) + .expect("Could not determine instance zone"); + + json!({ + "type": "gce_instance", + "labels": { + "project_id": PROJECT_ID.as_str(), + "instance_id": instance_id, + "zone": zone, + } + }) + } +} + +/// Represents the response returned by the metadata server's token +/// endpoint. The token is normally valid for an hour. +#[derive(Deserialize)] +struct TokenResponse { + expires_in: u64, + access_token: String, +} + +/// Struct used to store a token together with a sensible +/// representation of when it expires. +struct Token { + token: String, + fetched_at: Instant, + expires: Duration, +} + +impl Token { + /// Does this token need to be renewed? + fn is_expired(&self) -> bool { + self.fetched_at.elapsed() > self.expires + } +} + +/// Retrieves a token from the GCP metadata service. Retrieving these +/// tokens requires no additional authentication. +fn get_metadata_token() -> Result<Token> { + let body = get_metadata(METADATA_TOKEN_URL)?; + let token: TokenResponse = from_str(&body)?; + + debug!("Fetched new token from metadata service"); + + Ok(Token { + fetched_at: Instant::now(), + expires: Duration::from_secs(token.expires_in / 2), + token: token.access_token, + }) +} + +/// Signs a token using static client credentials configured for a +/// service account. This service account must have been given the +/// `Log Writer` role in Google Cloud IAM. +/// +/// The process for creating and signing these tokens is described +/// here: +/// +/// https://developers.google.com/identity/protocols/OAuth2ServiceAccount#jwt-auth +fn sign_service_account_token(credentials: &Credentials) -> Result<Token> { + use medallion::{Algorithm, Header, Payload}; + + let iat = Utc::now(); + let exp = iat.checked_add_signed(chrono::Duration::seconds(3600)) + .ok_or_else(|| format_err!("Failed to calculate token expiry"))?; + + let header = Header { + alg: Algorithm::RS256, + headers: Some(json!({ + "kid": credentials.private_key_id, + })), + }; + + let payload: Payload<()> = Payload { + iss: Some(credentials.client_email.clone()), + sub: Some(credentials.client_email.clone()), + aud: Some(LOGGING_SERVICE.to_string()), + iat: Some(iat.timestamp() as u64), + exp: Some(exp.timestamp() as u64), + ..Default::default() + }; + + let token = medallion::Token::new(header, payload) + .sign(credentials.private_key.as_bytes()) + .context("Signing service account token failed")?; + + debug!("Signed new service account token"); + + Ok(Token { + token, + fetched_at: Instant::now(), + expires: Duration::from_secs(3000), + }) +} + +/// Retrieve the authentication token either by using static client +/// credentials, or by talking to the metadata server. +/// +/// Which behaviour is used is controlled by the environment variable +/// `GOOGLE_APPLICATION_CREDENTIALS`, which should be configured to +/// point at a JSON private key file if service account authentication +/// is to be used. +fn get_token() -> Result<Token> { + if let Some(credentials) = SERVICE_ACCOUNT_CREDENTIALS.as_ref() { + sign_service_account_token(credentials) + } else { + get_metadata_token() + } +} + +/// This structure represents the different types of payloads +/// supported by journaldriver. +/// +/// Currently log entries can either contain plain text messages or +/// structured payloads in JSON-format. +#[derive(Debug, Serialize, PartialEq)] +#[serde(untagged)] +enum Payload { + TextPayload { + #[serde(rename = "textPayload")] + text_payload: String, + }, + JsonPayload { + #[serde(rename = "jsonPayload")] + json_payload: Value, + }, +} + +/// Attempt to parse a log message as JSON and return it as a +/// structured payload. If parsing fails, return the entry in plain +/// text format. +fn message_to_payload(message: Option<String>) -> Payload { + match message { + None => Payload::TextPayload { text_payload: "empty log entry".into() }, + Some(text_payload) => { + // Attempt to deserialize the text payload as a generic + // JSON value. + if let Ok(json_payload) = serde_json::from_str::<Value>(&text_payload) { + // If JSON-parsing succeeded on the payload, check + // whether we parsed an object (Stackdriver does not + // expect other types of JSON payload) and return it + // in that case. + if json_payload.is_object() { + return Payload::JsonPayload { json_payload } + } + } + + Payload::TextPayload { text_payload } + } + } +} + +/// Attempt to parse journald's microsecond timestamps into a UTC +/// timestamp. +/// +/// Parse errors are dismissed and returned as empty options: There +/// simply aren't any useful fallback mechanisms other than defaulting +/// to ingestion time for journaldriver's use-case. +fn parse_microseconds(input: String) -> Option<DateTime<Utc>> { + if input.len() != 16 { + return None; + } + + let seconds: i64 = (&input[..10]).parse().ok()?; + let micros: u32 = (&input[10..]).parse().ok()?; + + match Utc.timestamp_opt(seconds, micros * 1000) { + LocalResult::Single(time) => Some(time), + _ => None, + } +} + +/// Converts a journald log message priority to a +/// Stackdriver-compatible severity number. +/// +/// Both Stackdriver and journald specify equivalent +/// severities/priorities. Conveniently, the names are the same. +/// Inconveniently, the numbers are not. +/// +/// For more information on the journald priorities, consult these +/// man-pages: +/// +/// * systemd.journal-fields(7) (section 'PRIORITY') +/// * sd-daemon(3) +/// * systemd.exec(5) (section 'SyslogLevelPrefix') +/// +/// Note that priorities can be logged by applications via the prefix +/// concept described in these man pages, without interfering with +/// structured JSON-payloads. +/// +/// For more information on the Stackdriver severity levels, please +/// consult Google's documentation: +/// +/// https://cloud.google.com/logging/docs/reference/v2/rest/v2/LogEntry#LogSeverity +/// +/// Any unknown priority values result in no severity being set. +fn priority_to_severity(priority: String) -> Option<u32> { + match priority.as_ref() { + "0" => Some(800), // emerg + "1" => Some(700), // alert + "2" => Some(600), // crit + "3" => Some(500), // err + "4" => Some(400), // warning + "5" => Some(300), // notice + "6" => Some(200), // info + "7" => Some(100), // debug + _ => None, + } +} + +/// This structure represents a log entry in the format expected by +/// the Stackdriver API. +#[derive(Debug, Serialize)] +#[serde(rename_all = "camelCase")] +struct LogEntry { + labels: Value, + + #[serde(skip_serializing_if = "Option::is_none")] + timestamp: Option<DateTime<Utc>>, + + #[serde(flatten)] + payload: Payload, + + // https://cloud.google.com/logging/docs/reference/v2/rest/v2/LogEntry#LogSeverity + #[serde(skip_serializing_if = "Option::is_none")] + severity: Option<u32>, +} + +impl From<JournalRecord> for LogEntry { + // Converts from the fields contained in a journald record to the + // representation required by Stackdriver Logging. + // + // The fields are documented in systemd.journal-fields(7). + fn from(mut record: JournalRecord) -> LogEntry { + // The message field is technically just a convention, but + // journald seems to default to it when ingesting unit + // output. + let payload = message_to_payload(record.remove("MESSAGE")); + + // Presumably this is always set, but who can be sure + // about anything in this world. + let hostname = record.remove("_HOSTNAME"); + + // The unit is seemingly missing on kernel entries, but + // present on all others. + let unit = record.remove("_SYSTEMD_UNIT"); + + // The source timestamp (if present) is specified in + // microseconds since epoch. + // + // If it is not present or can not be parsed, journaldriver + // will not send a timestamp for the log entry and it will + // default to the ingestion time. + let timestamp = record + .remove("_SOURCE_REALTIME_TIMESTAMP") + .and_then(parse_microseconds); + + // Journald uses syslogd's concept of priority. No idea if this is + // always present, but it's optional in the Stackdriver API, so we just + // omit it if we can't find or parse it. + let severity = record + .remove("PRIORITY") + .and_then(priority_to_severity); + + LogEntry { + payload, + timestamp, + labels: json!({ + "host": hostname, + "unit": unit.unwrap_or_else(|| "syslog".into()), + }), + severity, + } + } +} + +/// Attempt to read from the journal. If no new entry is present, +/// await the next one up to the specified timeout. +fn receive_next_record(timeout: Duration, journal: &mut Journal) + -> Result<Option<JournalRecord>> { + let next_record = journal.next_record()?; + if next_record.is_some() { + return Ok(next_record); + } + + Ok(journal.await_next_record(Some(timeout))?) +} + +/// This function starts a double-looped, blocking receiver. It will +/// buffer messages for half a second before flushing them to +/// Stackdriver. +fn receiver_loop(mut journal: Journal) -> Result<()> { + let mut token = get_token()?; + + let mut buf: Vec<LogEntry> = Vec::new(); + let iteration = Duration::from_millis(500); + + loop { + trace!("Beginning outer iteration"); + let now = Instant::now(); + + loop { + if now.elapsed() > iteration { + break; + } + + if let Ok(Some(entry)) = receive_next_record(iteration, &mut journal) { + trace!("Received a new entry"); + buf.push(entry.into()); + } + } + + if !buf.is_empty() { + let to_flush = mem::replace(&mut buf, Vec::new()); + flush(&mut token, to_flush, journal.cursor()?)?; + } + + trace!("Done outer iteration"); + } +} + +/// Writes the current cursor into `/var/journaldriver/cursor.pos`. To +/// avoid issues with journaldriver being terminated while the cursor +/// is still being written, this will first write the cursor into a +/// temporary file and then move it. +fn persist_cursor(cursor: String) -> Result<()> { + // This code exists to aid in tracking down if there are other + // causes of issue #2 than what has already been taken care of. + // + // One theory is that journald (or the Rust library to interface + // with it) may occasionally return empty cursor strings. If this + // is ever the case, we would like to know about it. + if cursor.is_empty() { + error!("Received empty journald cursor position, refusing to persist!"); + error!("Please report this message at https://github.com/tazjin/journaldriver/issues/2"); + return Ok(()) + } + + let mut file = File::create(&*CURSOR_TMP_FILE) + .context("Failed to create cursor file")?; + + write!(file, "{}", cursor).context("Failed to write cursor file")?; + + rename(&*CURSOR_TMP_FILE, &*CURSOR_FILE) + .context("Failed to move cursor file") + .map_err(Into::into) +} + +/// Flushes all drained records to Stackdriver. Any Stackdriver +/// message can at most contain 1000 log entries which means they are +/// chunked up here. +/// +/// In some cases large payloads seem to cause errors in Stackdriver - +/// the chunks are therefore made smaller here. +/// +/// If flushing is successful the last cursor position will be +/// persisted to disk. +fn flush(token: &mut Token, + entries: Vec<LogEntry>, + cursor: String) -> Result<()> { + if token.is_expired() { + debug!("Refreshing Google metadata access token"); + let new_token = get_token()?; + mem::replace(token, new_token); + } + + for chunk in entries.chunks(750) { + let request = prepare_request(chunk); + if let Err(write_error) = write_entries(token, request) { + error!("Failed to write {} entries: {}", chunk.len(), write_error) + } else { + debug!("Wrote {} entries to Stackdriver", chunk.len()) + } + } + + persist_cursor(cursor) +} + +/// Convert a slice of log entries into the format expected by +/// Stackdriver. This format is documented here: +/// +/// https://cloud.google.com/logging/docs/reference/v2/rest/v2/entries/write +fn prepare_request(entries: &[LogEntry]) -> Value { + json!({ + "logName": format!("projects/{}/logs/{}", PROJECT_ID.as_str(), LOG_NAME.as_str()), + "resource": &*MONITORED_RESOURCE, + "entries": entries, + "partialSuccess": true + }) +} + +/// Perform the log entry insertion in Stackdriver Logging. +fn write_entries(token: &Token, request: Value) -> Result<()> { + let response = ureq::post(ENTRIES_WRITE_URL) + .set("Authorization", format!("Bearer {}", token.token).as_str()) + // The timeout values are set relatively high, not because of + // an expectation of Stackdriver being slow but just to + // eventually hit an error case in case of network troubles. + // Presumably no request in a functioning environment will + // ever hit these limits. + .timeout_connect(2000) + .timeout_read(5000) + .send_json(request); + + if response.ok() { + Ok(()) + } else { + let status = response.status_line().to_string(); + let body = response.into_string() + .unwrap_or_else(|_| "no response body".into()); + bail!("Write failure: {} ({})", body, status) + } +} + +/// Attempt to read the initial cursor position from the configured +/// file. If there is no initial cursor position set, read from the +/// tail of the log. +/// +/// The only "acceptable" error when reading the cursor position is +/// the cursor position file not existing, other errors are fatal +/// because they indicate a misconfiguration of journaldriver. +fn initial_cursor() -> Result<JournalSeek> { + let read_result: io::Result<String> = (|| { + let mut contents = String::new(); + let mut file = File::open(&*CURSOR_FILE)?; + file.read_to_string(&mut contents)?; + Ok(contents.trim().into()) + })(); + + match read_result { + Ok(cursor) => Ok(JournalSeek::Cursor { cursor }), + Err(ref err) if err.kind() == ErrorKind::NotFound => { + info!("No previous cursor position, reading from journal tail"); + Ok(JournalSeek::Tail) + }, + Err(err) => { + (Err(err).context("Could not read cursor position"))? + } + } +} + +fn main () { + env_logger::init(); + + // The directory in which cursor positions are persisted should + // have been created: + if !CURSOR_DIR.exists() { + error!("Cursor directory at '{:?}' does not exist", *CURSOR_DIR); + process::exit(1); + } + + let cursor_position_dir = CURSOR_FILE.parent() + .expect("Invalid cursor position file path"); + + fs::create_dir_all(cursor_position_dir) + .expect("Could not create directory to store cursor position in"); + + let mut journal = Journal::open(JournalFiles::All, false, true) + .expect("Failed to open systemd journal"); + + let seek_position = initial_cursor() + .expect("Failed to determine initial cursor position"); + + match journal.seek(seek_position) { + Ok(cursor) => info!("Opened journal at cursor '{}'", cursor), + Err(err) => { + error!("Failed to set initial journal position: {}", err); + process::exit(1) + } + } + + receiver_loop(journal).expect("log receiver encountered an unexpected error"); +} diff --git a/ops/journaldriver/src/tests.rs b/ops/journaldriver/src/tests.rs new file mode 100644 index 000000000000..779add7a7012 --- /dev/null +++ b/ops/journaldriver/src/tests.rs @@ -0,0 +1,95 @@ +use super::*; +use serde_json::to_string; + +#[test] +fn test_text_entry_serialization() { + let entry = LogEntry { + labels: Value::Null, + timestamp: None, + payload: Payload::TextPayload { + text_payload: "test entry".into(), + }, + severity: None, + }; + + let expected = "{\"labels\":null,\"textPayload\":\"test entry\"}"; + let result = to_string(&entry).expect("serialization failed"); + + assert_eq!(expected, result, "Plain text payload should serialize correctly") +} + +#[test] +fn test_json_entry_serialization() { + let entry = LogEntry { + labels: Value::Null, + timestamp: None, + payload: Payload::JsonPayload { + json_payload: json!({ + "message": "JSON test" + }) + }, + severity: None, + }; + + let expected = "{\"labels\":null,\"jsonPayload\":{\"message\":\"JSON test\"}}"; + let result = to_string(&entry).expect("serialization failed"); + + assert_eq!(expected, result, "JSOn payload should serialize correctly") +} + +#[test] +fn test_plain_text_payload() { + let message = "plain text payload".into(); + let payload = message_to_payload(Some(message)); + let expected = Payload::TextPayload { + text_payload: "plain text payload".into(), + }; + + assert_eq!(expected, payload, "Plain text payload should be detected correctly"); +} + +#[test] +fn test_empty_payload() { + let payload = message_to_payload(None); + let expected = Payload::TextPayload { + text_payload: "empty log entry".into(), + }; + + assert_eq!(expected, payload, "Empty payload should be handled correctly"); +} + +#[test] +fn test_json_payload() { + let message = "{\"someKey\":\"someValue\", \"otherKey\": 42}".into(); + let payload = message_to_payload(Some(message)); + let expected = Payload::JsonPayload { + json_payload: json!({ + "someKey": "someValue", + "otherKey": 42 + }) + }; + + assert_eq!(expected, payload, "JSON payload should be detected correctly"); +} + +#[test] +fn test_json_no_object() { + // This message can be parsed as valid JSON, but it is not an + // object - it should be returned as a plain-text payload. + let message = "42".into(); + let payload = message_to_payload(Some(message)); + let expected = Payload::TextPayload { + text_payload: "42".into(), + }; + + assert_eq!(expected, payload, "Non-object JSON payload should be plain text"); +} + +#[test] +fn test_parse_microseconds() { + let input: String = "1529175149291187".into(); + let expected: DateTime<Utc> = "2018-06-16T18:52:29.291187Z" + .to_string().parse().unwrap(); + + assert_eq!(Some(expected), parse_microseconds(input)); +} diff --git a/ops/kms_pass.nix b/ops/kms_pass.nix new file mode 100644 index 000000000000..2399559b4da8 --- /dev/null +++ b/ops/kms_pass.nix @@ -0,0 +1,61 @@ +# This tool mimics a subset of the interface of 'pass', but uses +# Google Cloud KMS for encryption. +# +# It is intended to be compatible with how 'kontemplate' invokes +# 'pass.' +# +# Only the 'show' and 'insert' commands are supported. + +{ depot, kms, ... }: + +let inherit (depot.third_party) google-cloud-sdk tree writeShellScriptBin; +in (writeShellScriptBin "pass" '' + set -eo pipefail + + CMD="$1" + readonly SECRET=$2 + readonly SECRETS_DIR=${./secrets} + readonly SECRET_PATH="$SECRETS_DIR/$SECRET" + + function secret_check { + if [[ -z $SECRET ]]; then + echo 'Secret must be specified' + exit 1 + fi + } + + if [[ -z $CMD ]]; then + CMD="ls" + fi + + case "$CMD" in + ls) + ${tree}/bin/tree $SECRETS_DIR + ;; + show) + secret_check + ${google-cloud-sdk}/bin/gcloud kms decrypt \ + --project ${kms.project} \ + --location ${kms.region} \ + --keyring ${kms.keyring} \ + --key ${kms.key} \ + --ciphertext-file $SECRET_PATH \ + --plaintext-file - + ;; + insert) + secret_check + ${google-cloud-sdk}/bin/gcloud kms encrypt \ + --project ${kms.project} \ + --location ${kms.region} \ + --keyring ${kms.keyring} \ + --key ${kms.key} \ + --ciphertext-file $SECRET_PATH \ + --plaintext-file - + echo "Inserted secret '$SECRET'" + ;; + *) + echo "Usage: pass show/insert <secret>" + exit 1 + ;; + esac +'') // { meta.enableCI = true; } diff --git a/ops/kontemplate/.gitignore b/ops/kontemplate/.gitignore new file mode 100644 index 000000000000..53a04aab3a89 --- /dev/null +++ b/ops/kontemplate/.gitignore @@ -0,0 +1,2 @@ +.idea/ +release/ diff --git a/ops/kontemplate/LICENSE b/ops/kontemplate/LICENSE new file mode 100644 index 000000000000..94a9ed024d38 --- /dev/null +++ b/ops/kontemplate/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +them if you wish), that you receive source code or can get it if you +want it, that you can change the software or use pieces of it in new +free programs, and that you know you can do these things. + + To protect your rights, we need to prevent others from denying you +these rights or asking you to surrender the rights. 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But first, please read +<http://www.gnu.org/philosophy/why-not-lgpl.html>. diff --git a/ops/kontemplate/README.md b/ops/kontemplate/README.md new file mode 100644 index 000000000000..998e61a61928 --- /dev/null +++ b/ops/kontemplate/README.md @@ -0,0 +1,186 @@ +Kontemplate - A simple Kubernetes templater +=========================================== + +[Kontemplate][] is a simple CLI tool that can take sets of Kubernetes resource +files with placeholders and insert values per environment. + +This tool was made because in many cases all I want in terms of Kubernetes +configuration is simple value interpolation per environment (i.e. Kubernetes +cluster), but with the same deployment files. + +In my experience this is often enough and more complex solutions such as +[Helm][] are not required. + +Check out a Kontemplate setup example and the feature list below! + +<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc --> +**Table of Contents** + +- [Kontemplate - A simple Kubernetes templater](#kontemplate---a-simple-kubernetes-templater) + - [Features](#features) + - [Example](#example) + - [Installation](#installation) + - [Homebrew](#homebrew) + - [Arch Linux](#arch-linux) + - [Building repeatably from source](#building-repeatably-from-source) + - [Building from source](#building-from-source) + - [Usage](#usage) + - [Contributing](#contributing) + +<!-- markdown-toc end --> + +## Features + +* [Simple, yet powerful templates](docs/templates.md) +* [Clean cluster configuration files](docs/cluster-config.md) +* [Resources organised as simple resource sets](docs/resource-sets.md) +* Integration with pass +* Integration with kubectl + +## Example + +Kontemplate lets you describe resources as you normally would in a simple folder structure: + +``` +. +├── prod-cluster.yaml +└── some-api + ├── deployment.yaml + └── service.yaml +``` + +This example has all resources belonging to `some-api` (no file naming conventions enforced at all!) in the `some-api` +folder and the configuration for the cluster `prod-cluster` in the corresponding file. + +Lets take a short look at `prod-cluster.yaml`: + +```yaml +--- +context: k8s.prod.mydomain.com +global: + globalVar: lizards +include: + - name: some-api + values: + version: 1.0-0e6884d + importantFeature: true + apiPort: 4567 +``` + +Those values are then templated into the resource files of `some-api`. That's it! + +You can also set up more complicated folder structures for organisation, for example: + +``` +. +├── api +│ ├── image-api +│ │ └── deployment.yaml +│ └── music-api +│ └── deployment.yaml +│ │ └── default.json +├── frontend +│ ├── main-app +│ │ ├── deployment.yaml +│ │ └── service.yaml +│ └── user-page +│ ├── deployment.yaml +│ └── service.yaml +├── prod-cluster.yaml +└── test-cluster.yaml +``` + +And selectively template or apply resources with a command such as +`kontemplate apply test-cluster.yaml --include api --include frontend/user-page` +to only update the `api` resource sets and the `frontend/user-page` resource set. + +## Installation + +It is recommended to install Kontemplate from the [Nix](https://nixos.org/) package set, +where it is available since NixOS 17.09 as `kontemplate`. + +If using Nix is not an option for you, several other methods of installation are +available: + +### Binary releases + +Signed binary releases are available on the [releases page][] for Linux, OS X, FreeBSD and +Windows. + +Releases are signed with the GPG key `DCF34CFAC1AC44B87E26333136EE34814F6D294A`. + +### Building from source + +You can clone Kontemplate either by cloning the full +[depot][https://git.tazj.in/] or by just cloning the kontemplate +subtree like so: + + git clone -b kontemplate https://git.tazj.in kontemplate + +The `go` tooling can be used as normal with this cloned repository. In +a full clone of the dpeot, Nix can be used to build Kontemplate: + + nix-build -A ops.kontemplate + +## Usage + +You must have `kubectl` installed to use Kontemplate effectively. + +``` +usage: kontemplate [<flags>] <command> [<args> ...] + +simple Kubernetes resource templating + +Flags: + -h, --help Show context-sensitive help (also try --help-long and --help-man). + -i, --include=INCLUDE ... Resource sets to include explicitly + -e, --exclude=EXCLUDE ... Resource sets to exclude explicitly + +Commands: + help [<command>...] + Show help. + + template <file> + Template resource sets and print them + + apply [<flags>] <file> + Template resources and pass to 'kubectl apply' + + replace <file> + Template resources and pass to 'kubectl replace' + + delete <file> + Template resources and pass to 'kubectl delete' + + create <file> + Template resources and pass to 'kubectl create' + +``` + +Examples: + +``` +# Look at output for a specific resource set and check to see if it's correct ... +kontemplate template example/prod-cluster.yaml -i some-api + +# ... maybe do a dry-run to see what kubectl would do: +kontemplate apply example/prod-cluster.yaml --dry-run + +# And actually apply it if you like what you see: +kontemplate apply example/prod-cluster.yaml +``` + +Check out the feature list and the individual feature documentation above. Then you should be good to go! + +## Contributing + +Feel free to contribute pull requests, file bugs and open issues with feature suggestions! + +Kontemplate is licensed under the GPLv3, a copy of the license and its terms can be found +in the `LICENSE` file. + +Please follow the [code of conduct](CODE_OF_CONDUCT.md). + +[Kontemplate]: http://kontemplate.works +[Helm]: https://helm.sh/ +[releases page]: https://github.com/tazjin/kontemplate/releases diff --git a/ops/kontemplate/build-release.sh b/ops/kontemplate/build-release.sh new file mode 100755 index 000000000000..e4258c53dd09 --- /dev/null +++ b/ops/kontemplate/build-release.sh @@ -0,0 +1,75 @@ +#!/usr/bin/env bash +set -ueo pipefail + +# Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +# +# This file is part of Kontemplate. +# +# Kontemplate is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +readonly GIT_HASH="$(git rev-parse --short HEAD)" +readonly LDFLAGS="-X main.gitHash=${GIT_HASH} -w -s" +readonly VERSION="1.8.0-${GIT_HASH}" + +function binary-name() { + local os="${1}" + local target="${2}" + if [ "${os}" = "windows" ]; then + echo -n "${target}/kontemplate.exe" + else + echo -n "${target}/kontemplate" + fi +} + +function build-for() { + local os="${1}" + local arch="${2}" + local target="release/${os}/${arch}" + local bin=$(binary-name "${os}" "${target}") + + echo "Building kontemplate for ${os}-${arch} in ${target}" + + mkdir -p "${target}" + + env GOOS="${os}" GOARCH="${arch}" go build \ + -ldflags "${LDFLAGS}" \ + -o "${bin}" \ + -tags netgo +} + +function sign-for() { + local os="${1}" + local arch="${2}" + local target="release/${os}/${arch}" + local bin=$(binary-name "${os}" "${target}") + local tar="release/kontemplate-${VERSION}-${os}-${arch}.tar.gz" + + echo "Packing release into ${tar}" + tar czvf "${tar}" -C "${target}" $(basename "${bin}") + + local hash=$(sha256sum "${tar}") + echo "Signing kontemplate release tarball for ${os}-${arch} with SHA256 ${hash}" + gpg --armor --detach-sig --sign "${tar}" +} + +case "${1}" in + "build") + # Build releases for various operating systems: + build-for "linux" "amd64" + build-for "darwin" "amd64" + build-for "windows" "amd64" + build-for "freebsd" "amd64" + exit 0 + ;; + "sign") + # Bundle and sign releases: + sign-for "linux" "amd64" + sign-for "darwin" "amd64" + sign-for "windows" "amd64" + sign-for "freebsd" "amd64" + exit 0 + ;; +esac diff --git a/ops/kontemplate/context/context.go b/ops/kontemplate/context/context.go new file mode 100644 index 000000000000..2d0378a0ec23 --- /dev/null +++ b/ops/kontemplate/context/context.go @@ -0,0 +1,266 @@ +// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +// +// This file is part of Kontemplate. +// +// Kontemplate is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. + +package context + +import ( + "fmt" + "path" + "strings" + + "github.com/tazjin/kontemplate/util" +) + +type ResourceSet struct { + // Name of the resource set. This can be used in include/exclude statements during kontemplate runs. + Name string `json:"name"` + + // Path to the folder containing the files for this resource set. This defaults to the value of the 'name' field + // if unset. + Path string `json:"path"` + + // Values to include when interpolating resources from this resource set. + Values map[string]interface{} `json:"values"` + + // Args to pass on to kubectl for this resource set. + Args []string `json:"args"` + + // Nested resource sets to include + Include []ResourceSet `json:"include"` + + // Parent resource set for flattened resource sets. Should not be manually specified. + Parent string +} + +type Context struct { + // The name of the kubectl context + Name string `json:"context"` + + // Global variables that should be accessible by all resource sets + Global map[string]interface{} `json:"global"` + + // File names of YAML or JSON files including extra variables that should be globally accessible + VariableImportFiles []string `json:"import"` + + // The resource sets to include in this context + ResourceSets []ResourceSet `json:"include"` + + // Variables imported from additional files + ImportedVars map[string]interface{} + + // Explicitly set variables (via `--var`) that should override all others + ExplicitVars map[string]interface{} + + // This field represents the absolute path to the context base directory and should not be manually specified. + BaseDir string +} + +func contextLoadingError(filename string, cause error) error { + return fmt.Errorf("Context loading failed on file %s due to: \n%v", filename, cause) +} + +// Attempt to load and deserialise a Context from the specified file. +func LoadContext(filename string, explicitVars *[]string) (*Context, error) { + var ctx Context + err := util.LoadData(filename, &ctx) + + if err != nil { + return nil, contextLoadingError(filename, err) + } + + ctx.BaseDir = path.Dir(filename) + + // Prepare the resource sets by resolving parents etc. + ctx.ResourceSets = flattenPrepareResourceSetPaths(&ctx.BaseDir, &ctx.ResourceSets) + + // Add variables explicitly specified on the command line + ctx.ExplicitVars, err = loadExplicitVars(explicitVars) + if err != nil { + return nil, fmt.Errorf("Error setting explicit variables: %v\n", err) + } + + // Add variables loaded from import files + ctx.ImportedVars, err = ctx.loadImportedVariables() + if err != nil { + return nil, contextLoadingError(filename, err) + } + + // Merge variables defined at different levels. The + // `mergeContextValues` function is documented with the merge + // hierarchy. + ctx.ResourceSets = ctx.mergeContextValues() + + if err != nil { + return nil, contextLoadingError(filename, err) + } + + return &ctx, nil +} + +// Kontemplate supports specifying additional variable files with the +// `import` keyword. This function loads those variable files and +// merges them together with the context's other global variables. +func (ctx *Context) loadImportedVariables() (map[string]interface{}, error) { + allImportedVars := make(map[string]interface{}) + + for _, file := range ctx.VariableImportFiles { + // Ensure that the filename is not merged with the baseDir if + // it is set to an absolute path. + var filePath string + if path.IsAbs(file) { + filePath = file + } else { + filePath = path.Join(ctx.BaseDir, file) + } + + var importedVars map[string]interface{} + err := util.LoadData(filePath, &importedVars) + + if err != nil { + return nil, err + } + + allImportedVars = *util.Merge(&allImportedVars, &importedVars) + } + + return allImportedVars, nil +} + +// Correctly prepares the file paths for resource sets by inferring implicit paths and flattening resource set +// collections, i.e. resource sets that themselves have an additional 'include' field set. +// Those will be regarded as a short-hand for including multiple resource sets from a subfolder. +// See https://github.com/tazjin/kontemplate/issues/9 for more information. +func flattenPrepareResourceSetPaths(baseDir *string, rs *[]ResourceSet) []ResourceSet { + flattened := make([]ResourceSet, 0) + + for _, r := range *rs { + // If a path is not explicitly specified it should default to the resource set name. + // This is also the classic behaviour prior to kontemplate 1.2 + if r.Path == "" { + r.Path = r.Name + } + + // Paths are made absolute by resolving them relative to the context base, + // unless absolute paths were specified. + if !path.IsAbs(r.Path) { + r.Path = path.Join(*baseDir, r.Path) + } + + if len(r.Include) == 0 { + flattened = append(flattened, r) + } else { + for _, subResourceSet := range r.Include { + if subResourceSet.Path == "" { + subResourceSet.Path = subResourceSet.Name + } + + subResourceSet.Parent = r.Name + subResourceSet.Name = path.Join(r.Name, subResourceSet.Name) + subResourceSet.Path = path.Join(r.Path, subResourceSet.Path) + subResourceSet.Values = *util.Merge(&r.Values, &subResourceSet.Values) + flattened = append(flattened, subResourceSet) + } + } + } + + return flattened +} + +// Merges the context and resource set variables according in the +// desired precedence order. +// +// For now the reasoning behind the merge order is from least specific +// in relation to the cluster configuration, which means that the +// precedence is (in ascending order): +// +// 1. Default values in resource sets. +// 2. Values imported from files (via `import:`) +// 3. Global values in a cluster configuration +// 4. Values set in a resource set's `include`-section +// 5. Explicit values set on the CLI (`--var`) +// +// For a discussion on the reasoning behind this order, please consult +// https://github.com/tazjin/kontemplate/issues/142 +func (ctx *Context) mergeContextValues() []ResourceSet { + updated := make([]ResourceSet, len(ctx.ResourceSets)) + + // Merging has to happen separately for every individual + // resource set to make use of the default values: + for i, rs := range ctx.ResourceSets { + // Begin by loading default values from the resource + // sets configuration. + // + // Resource sets are used across different cluster + // contexts and the default values in them have the + // lowest precedence. + defaultValues := loadDefaultValues(&rs, ctx) + + // Continue by merging default values with values + // imported from external files. Those values are also + // used across cluster contexts, but have higher + // precedence than defaults. + merged := util.Merge(defaultValues, &ctx.ImportedVars) + + // Merge global values defined in the cluster context: + merged = util.Merge(merged, &ctx.Global) + + // Merge values configured in the resource set's + // `include` section: + merged = util.Merge(merged, &rs.Values) + + // Merge values defined explicitly on the CLI: + merged = util.Merge(merged, &ctx.ExplicitVars) + + // Continue with the newly merged resource set: + rs.Values = *merged + updated[i] = rs + } + + return updated +} + +// Loads default values for a resource set collection from +// path/to/set/default.{json|yaml}. +func loadDefaultValues(rs *ResourceSet, c *Context) *map[string]interface{} { + var defaultVars map[string]interface{} + + for _, filename := range util.DefaultFilenames { + err := util.LoadData(path.Join(rs.Path, filename), &defaultVars) + if err == nil { + return &defaultVars + } + } + + // The actual error is not inspected here. The reasoning for + // this is that in case of serious problems (e.g. permission + // issues with the folder / folder not existing) failure will + // occur a bit later anyways. + // + // Otherwise we'd have to differentiate between + // file-not-found-errors (no default values specified) and + // other errors here. + return &rs.Values +} + +// Prepares the variables specified explicitly via `--var` when +// executing kontemplate for adding to the context. +func loadExplicitVars(vars *[]string) (map[string]interface{}, error) { + explicitVars := make(map[string]interface{}, len(*vars)) + + for _, v := range *vars { + varParts := strings.SplitN(v, "=", 2) + if len(varParts) != 2 { + return nil, fmt.Errorf(`invalid explicit variable provided (%s), name and value should be separated with "="`, v) + } + + explicitVars[varParts[0]] = varParts[1] + } + + return explicitVars, nil +} diff --git a/ops/kontemplate/context/context_test.go b/ops/kontemplate/context/context_test.go new file mode 100644 index 000000000000..7ecd9d587d24 --- /dev/null +++ b/ops/kontemplate/context/context_test.go @@ -0,0 +1,353 @@ +// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +// +// This file is part of Kontemplate. +// +// Kontemplate is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. + +package context + +import ( + "reflect" + "testing" +) + +var noExplicitVars []string = make([]string, 0) + +func TestLoadFlatContextFromFile(t *testing.T) { + ctx, err := LoadContext("testdata/flat-test.yaml", &noExplicitVars) + + if err != nil { + t.Error(err) + t.Fail() + } + + expected := Context{ + Name: "k8s.prod.mydomain.com", + Global: map[string]interface{}{ + "globalVar": "lizards", + }, + ResourceSets: []ResourceSet{ + { + Name: "some-api", + Path: "testdata/some-api", + Values: map[string]interface{}{ + "apiPort": float64(4567), // yep! + "importantFeature": true, + "version": "1.0-0e6884d", + "globalVar": "lizards", + }, + Include: nil, + Parent: "", + }, + }, + BaseDir: "testdata", + ImportedVars: make(map[string]interface{}, 0), + ExplicitVars: make(map[string]interface{}, 0), + } + + if !reflect.DeepEqual(*ctx, expected) { + t.Error("Loaded context and expected context did not match") + t.Fail() + } +} + +func TestLoadContextWithArgs(t *testing.T) { + ctx, err := LoadContext("testdata/flat-with-args-test.yaml", &noExplicitVars) + + if err != nil { + t.Error(err) + t.Fail() + } + + expected := Context{ + Name: "k8s.prod.mydomain.com", + ResourceSets: []ResourceSet{ + { + Name: "some-api", + Path: "testdata/some-api", + Values: make(map[string]interface{}, 0), + Args: []string{ + "--as=some-user", + "--as-group=hello:world", + "--as-banana", + "true", + }, + Include: nil, + Parent: "", + }, + }, + BaseDir: "testdata", + ImportedVars: make(map[string]interface{}, 0), + ExplicitVars: make(map[string]interface{}, 0), + } + + if !reflect.DeepEqual(*ctx, expected) { + t.Error("Loaded context and expected context did not match") + t.Fail() + } +} + +func TestLoadContextWithResourceSetCollections(t *testing.T) { + ctx, err := LoadContext("testdata/collections-test.yaml", &noExplicitVars) + + if err != nil { + t.Error(err) + t.Fail() + } + + expected := Context{ + Name: "k8s.prod.mydomain.com", + Global: map[string]interface{}{ + "globalVar": "lizards", + }, + ResourceSets: []ResourceSet{ + { + Name: "some-api", + Path: "testdata/some-api", + Values: map[string]interface{}{ + "apiPort": float64(4567), // yep! + "importantFeature": true, + "version": "1.0-0e6884d", + "globalVar": "lizards", + }, + Include: nil, + Parent: "", + }, + { + Name: "collection/nested", + Path: "testdata/collection/nested", + Values: map[string]interface{}{ + "lizards": "good", + "globalVar": "lizards", + }, + Include: nil, + Parent: "collection", + }, + }, + BaseDir: "testdata", + ImportedVars: make(map[string]interface{}, 0), + ExplicitVars: make(map[string]interface{}, 0), + } + + if !reflect.DeepEqual(*ctx, expected) { + t.Error("Loaded context and expected context did not match") + t.Fail() + } + +} + +func TestSubresourceVariableInheritance(t *testing.T) { + ctx, err := LoadContext("testdata/parent-variables.yaml", &noExplicitVars) + + if err != nil { + t.Error(err) + t.Fail() + } + + expected := Context{ + Name: "k8s.prod.mydomain.com", + ResourceSets: []ResourceSet{ + { + Name: "parent/child", + Path: "testdata/parent/child", + Values: map[string]interface{}{ + "foo": "bar", + "bar": "baz", + }, + Include: nil, + Parent: "parent", + }, + }, + BaseDir: "testdata", + ImportedVars: make(map[string]interface{}, 0), + ExplicitVars: make(map[string]interface{}, 0), + } + + if !reflect.DeepEqual(*ctx, expected) { + t.Error("Loaded and expected context did not match") + t.Fail() + } +} + +func TestSubresourceVariableInheritanceOverride(t *testing.T) { + ctx, err := LoadContext("testdata/parent-variable-override.yaml", &noExplicitVars) + + if err != nil { + t.Error(err) + t.Fail() + } + + expected := Context{ + Name: "k8s.prod.mydomain.com", + ResourceSets: []ResourceSet{ + { + Name: "parent/child", + Path: "testdata/parent/child", + Values: map[string]interface{}{ + "foo": "newvalue", + }, + Include: nil, + Parent: "parent", + }, + }, + BaseDir: "testdata", + ImportedVars: make(map[string]interface{}, 0), + ExplicitVars: make(map[string]interface{}, 0), + } + + if !reflect.DeepEqual(*ctx, expected) { + t.Error("Loaded and expected context did not match") + t.Fail() + } +} + +func TestDefaultValuesLoading(t *testing.T) { + ctx, err := LoadContext("testdata/default-loading.yaml", &noExplicitVars) + if err != nil { + t.Error(err) + t.Fail() + } + + rs := ctx.ResourceSets[0] + if rs.Values["defaultValues"] != "loaded" { + t.Errorf("Default values not loaded from YAML file") + t.Fail() + } + + if rs.Values["override"] != "notAtAll" { + t.Error("Default values should not override other values") + t.Fail() + } +} + +func TestImportValuesLoading(t *testing.T) { + ctx, err := LoadContext("testdata/import-vars-simple.yaml", &noExplicitVars) + if err != nil { + t.Error(err) + t.Fail() + } + + expected := map[string]interface{}{ + "override": "true", + "music": map[string]interface{}{ + "artist": "Pallida", + "track": "Tractor Beam", + }, + } + + if !reflect.DeepEqual(ctx.ImportedVars, expected) { + t.Error("Expected imported values after loading imports did not match!") + t.Fail() + } +} + +func TestExplicitPathLoading(t *testing.T) { + ctx, err := LoadContext("testdata/explicit-path.yaml", &noExplicitVars) + if err != nil { + t.Error(err) + t.Fail() + } + + expected := Context{ + Name: "k8s.prod.mydomain.com", + ResourceSets: []ResourceSet{ + { + Name: "some-api-europe", + Path: "testdata/some-api", + Values: map[string]interface{}{ + "location": "europe", + }, + Include: nil, + Parent: "", + }, + { + Name: "some-api-asia", + Path: "testdata/some-api", + Values: map[string]interface{}{ + "location": "asia", + }, + Include: nil, + Parent: "", + }, + }, + BaseDir: "testdata", + ImportedVars: make(map[string]interface{}, 0), + ExplicitVars: make(map[string]interface{}, 0), + } + + if !reflect.DeepEqual(*ctx, expected) { + t.Error("Loaded context and expected context did not match") + t.Fail() + } +} + +func TestExplicitSubresourcePathLoading(t *testing.T) { + ctx, err := LoadContext("testdata/explicit-subresource-path.yaml", &noExplicitVars) + if err != nil { + t.Error(err) + t.Fail() + } + + expected := Context{ + Name: "k8s.prod.mydomain.com", + ResourceSets: []ResourceSet{ + { + Name: "parent/child", + Path: "testdata/parent-path/child-path", + Parent: "parent", + Values: make(map[string]interface{}, 0), + }, + }, + BaseDir: "testdata", + ImportedVars: make(map[string]interface{}, 0), + ExplicitVars: make(map[string]interface{}, 0), + } + + if !reflect.DeepEqual(*ctx, expected) { + t.Error("Loaded context and expected context did not match") + t.Fail() + } +} + +func TestSetVariablesFromArguments(t *testing.T) { + vars := []string{"version=some-service-version"} + ctx, _ := LoadContext("testdata/default-loading.yaml", &vars) + + if version := ctx.ExplicitVars["version"]; version != "some-service-version" { + t.Errorf(`Expected variable "version" to have value "some-service-version" but was "%s"`, version) + } +} + +func TestSetInvalidVariablesFromArguments(t *testing.T) { + vars := []string{"version: some-service-version"} + _, err := LoadContext("testdata/default-loading.yaml", &vars) + + if err == nil { + t.Error("Expected invalid variable to return an error") + } +} + +// This test ensures that variables are merged in the correct order. +// Please consult the test data in `testdata/merging`. +func TestValueMergePrecedence(t *testing.T) { + cliVars:= []string{"cliVar=cliVar"} + ctx, _ := LoadContext("testdata/merging/context.yaml", &cliVars) + + expected := map[string]interface{}{ + "defaultVar": "defaultVar", + "importVar": "importVar", + "globalVar": "globalVar", + "includeVar": "includeVar", + "cliVar": "cliVar", + } + + result := ctx.ResourceSets[0].Values + + if !reflect.DeepEqual(expected, result) { + t.Errorf("Merged values did not match expected result: \n%v", result) + t.Fail() + } +} diff --git a/ops/kontemplate/context/testdata/collections-test.yaml b/ops/kontemplate/context/testdata/collections-test.yaml new file mode 100644 index 000000000000..a619c8cfddcc --- /dev/null +++ b/ops/kontemplate/context/testdata/collections-test.yaml @@ -0,0 +1,15 @@ +--- +context: k8s.prod.mydomain.com +global: + globalVar: lizards +include: + - name: some-api + values: + version: 1.0-0e6884d + importantFeature: true + apiPort: 4567 + - name: collection + include: + - name: nested + values: + lizards: good diff --git a/ops/kontemplate/context/testdata/default-loading.yaml b/ops/kontemplate/context/testdata/default-loading.yaml new file mode 100644 index 000000000000..d589c99b4eaf --- /dev/null +++ b/ops/kontemplate/context/testdata/default-loading.yaml @@ -0,0 +1,6 @@ +--- +context: default-loading +include: + - name: default + values: + override: notAtAll \ No newline at end of file diff --git a/ops/kontemplate/context/testdata/default/default.yaml b/ops/kontemplate/context/testdata/default/default.yaml new file mode 100644 index 000000000000..0ffa3cd81f24 --- /dev/null +++ b/ops/kontemplate/context/testdata/default/default.yaml @@ -0,0 +1,2 @@ +defaultValues: loaded +override: noop \ No newline at end of file diff --git a/ops/kontemplate/context/testdata/explicit-path.yaml b/ops/kontemplate/context/testdata/explicit-path.yaml new file mode 100644 index 000000000000..2c81f83c0919 --- /dev/null +++ b/ops/kontemplate/context/testdata/explicit-path.yaml @@ -0,0 +1,11 @@ +--- +context: k8s.prod.mydomain.com +include: + - name: some-api-europe + path: some-api + values: + location: europe + - name: some-api-asia + path: some-api + values: + location: asia diff --git a/ops/kontemplate/context/testdata/explicit-subresource-path.yaml b/ops/kontemplate/context/testdata/explicit-subresource-path.yaml new file mode 100644 index 000000000000..6cf86183229e --- /dev/null +++ b/ops/kontemplate/context/testdata/explicit-subresource-path.yaml @@ -0,0 +1,8 @@ +--- +context: k8s.prod.mydomain.com +include: + - name: parent + path: parent-path + include: + - name: child + path: child-path diff --git a/ops/kontemplate/context/testdata/flat-test.yaml b/ops/kontemplate/context/testdata/flat-test.yaml new file mode 100644 index 000000000000..dd7804f719c3 --- /dev/null +++ b/ops/kontemplate/context/testdata/flat-test.yaml @@ -0,0 +1,10 @@ +--- +context: k8s.prod.mydomain.com +global: + globalVar: lizards +include: + - name: some-api + values: + version: 1.0-0e6884d + importantFeature: true + apiPort: 4567 diff --git a/ops/kontemplate/context/testdata/flat-with-args-test.yaml b/ops/kontemplate/context/testdata/flat-with-args-test.yaml new file mode 100644 index 000000000000..29d3334fb54d --- /dev/null +++ b/ops/kontemplate/context/testdata/flat-with-args-test.yaml @@ -0,0 +1,9 @@ +--- +context: k8s.prod.mydomain.com +include: + - name: some-api + args: + - --as=some-user + - --as-group=hello:world + - --as-banana + - "true" diff --git a/ops/kontemplate/context/testdata/import-vars-simple.yaml b/ops/kontemplate/context/testdata/import-vars-simple.yaml new file mode 100644 index 000000000000..12244e1ab174 --- /dev/null +++ b/ops/kontemplate/context/testdata/import-vars-simple.yaml @@ -0,0 +1,5 @@ +--- +context: k8s.prod.mydomain.com +import: + - test-vars.yaml +include: [] diff --git a/ops/kontemplate/context/testdata/merging/context.yaml b/ops/kontemplate/context/testdata/merging/context.yaml new file mode 100644 index 000000000000..df30d3d8cbe3 --- /dev/null +++ b/ops/kontemplate/context/testdata/merging/context.yaml @@ -0,0 +1,15 @@ +# This context file is intended to test the merge hierarchy of +# variables defined at different levels. +--- +context: merging.in.kontemplate.works +global: + globalVar: globalVar + includeVar: should be overridden (global) + cliVar: should be overridden (global) +import: + - import-vars.yaml +include: + - name: resource + values: + includeVar: includeVar + cliVar: should be overridden (include) diff --git a/ops/kontemplate/context/testdata/merging/import-vars.yaml b/ops/kontemplate/context/testdata/merging/import-vars.yaml new file mode 100644 index 000000000000..2a51352571a6 --- /dev/null +++ b/ops/kontemplate/context/testdata/merging/import-vars.yaml @@ -0,0 +1,4 @@ +importVar: importVar +globalVar: should be overridden (import) +includeVar: should be overridden (import) +cliVar: should be overridden (import) diff --git a/ops/kontemplate/context/testdata/merging/resource/default.yaml b/ops/kontemplate/context/testdata/merging/resource/default.yaml new file mode 100644 index 000000000000..040a19aaba25 --- /dev/null +++ b/ops/kontemplate/context/testdata/merging/resource/default.yaml @@ -0,0 +1,5 @@ +defaultVar: defaultVar +importVar: should be overridden (default) +globalVar: should be overridden (default) +includeVar: should be overridden (default) +cliVar: should be overridden (default) diff --git a/ops/kontemplate/context/testdata/merging/resource/output.yaml b/ops/kontemplate/context/testdata/merging/resource/output.yaml new file mode 100644 index 000000000000..5920b2720780 --- /dev/null +++ b/ops/kontemplate/context/testdata/merging/resource/output.yaml @@ -0,0 +1,5 @@ +defaultVar: {{ .defaultVar }} +importVar: {{ .importVar }} +globalVar: {{ .globalVar }} +includeVar: {{ .includeVar }} +cliVar: {{ .cliVar }} diff --git a/ops/kontemplate/context/testdata/parent-variable-override.yaml b/ops/kontemplate/context/testdata/parent-variable-override.yaml new file mode 100644 index 000000000000..42676c3028fe --- /dev/null +++ b/ops/kontemplate/context/testdata/parent-variable-override.yaml @@ -0,0 +1,10 @@ +--- +context: k8s.prod.mydomain.com +include: + - name: parent + values: + foo: bar + include: + - name: child + values: + foo: newvalue diff --git a/ops/kontemplate/context/testdata/parent-variables.yaml b/ops/kontemplate/context/testdata/parent-variables.yaml new file mode 100644 index 000000000000..8459fd30405b --- /dev/null +++ b/ops/kontemplate/context/testdata/parent-variables.yaml @@ -0,0 +1,10 @@ +--- +context: k8s.prod.mydomain.com +include: + - name: parent + values: + foo: bar + include: + - name: child + values: + bar: baz diff --git a/ops/kontemplate/context/testdata/test-vars-override.yaml b/ops/kontemplate/context/testdata/test-vars-override.yaml new file mode 100644 index 000000000000..5215c559c136 --- /dev/null +++ b/ops/kontemplate/context/testdata/test-vars-override.yaml @@ -0,0 +1,3 @@ +--- +override: 3 +place: Oslo diff --git a/ops/kontemplate/context/testdata/test-vars.yaml b/ops/kontemplate/context/testdata/test-vars.yaml new file mode 100644 index 000000000000..af27bdc455bf --- /dev/null +++ b/ops/kontemplate/context/testdata/test-vars.yaml @@ -0,0 +1,5 @@ +--- +override: 'true' +music: + artist: Pallida + track: Tractor Beam diff --git a/ops/kontemplate/default.nix b/ops/kontemplate/default.nix new file mode 100644 index 000000000000..9085f31c304b --- /dev/null +++ b/ops/kontemplate/default.nix @@ -0,0 +1,36 @@ +# Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +# +# This file is part of Kontemplate. +# +# Kontemplate is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This file is the Nix derivation used to install Kontemplate on +# Nix-based systems. + +{ depot, ... }: + +with depot.third_party; buildGoPackage rec { + name = "kontemplate-${version}"; + version = "master"; + src = ./.; + goPackagePath = "github.com/tazjin/kontemplate"; + goDeps = ./deps.nix; + buildInputs = [ parallel ]; + + # Enable checks and configure check-phase to include vet: + doCheck = true; + preCheck = '' + for pkg in $(getGoDirs ""); do + buildGoDir vet "$pkg" + done + ''; + + meta = with lib; { + description = "A resource templating helper for Kubernetes"; + homepage = "http://kontemplate.works/"; + license = licenses.gpl3; + }; +} diff --git a/ops/kontemplate/deps.nix b/ops/kontemplate/deps.nix new file mode 100644 index 000000000000..7693968bd550 --- /dev/null +++ b/ops/kontemplate/deps.nix @@ -0,0 +1,111 @@ +# This file was generated by https://github.com/kamilchm/go2nix v1.3.0 +[ + { + goPackagePath = "github.com/Masterminds/goutils"; + fetch = { + type = "git"; + url = "https://github.com/Masterminds/goutils"; + rev = "41ac8693c5c10a92ea1ff5ac3a7f95646f6123b0"; + sha256 = "180px47gj936qyk5bkv5mbbgiil9abdjq6kwkf7sq70vyi9mcfiq"; + }; + } + { + goPackagePath = "github.com/Masterminds/semver"; + fetch = { + type = "git"; + url = "https://github.com/Masterminds/semver"; + rev = "5bc3b9184d48f1412b300b87a200cf020d9254cf"; + sha256 = "1vdfm653v50jf63cw0kg2hslx50cn4mk6lj3p51bi11jrg48kfng"; + }; + } + { + goPackagePath = "github.com/Masterminds/sprig"; + fetch = { + type = "git"; + url = "https://github.com/Masterminds/sprig"; + rev = "6f509977777c33eae63b2136d97f7b976cb971cc"; + sha256 = "05h9k6fhjxnpwlihj3z02q9kvqvnq53jix0ab84sx0666bci3cdh"; + }; + } + { + goPackagePath = "github.com/alecthomas/template"; + fetch = { + type = "git"; + url = "https://github.com/alecthomas/template"; + rev = "fb15b899a75114aa79cc930e33c46b577cc664b1"; + sha256 = "1vlasv4dgycydh5wx6jdcvz40zdv90zz1h7836z7lhsi2ymvii26"; + }; + } + { + goPackagePath = "github.com/alecthomas/units"; + fetch = { + type = "git"; + url = "https://github.com/alecthomas/units"; + rev = "c3de453c63f4bdb4dadffab9805ec00426c505f7"; + sha256 = "0js37zlgv37y61j4a2d46jh72xm5kxmpaiw0ya9v944bjpc386my"; + }; + } + { + goPackagePath = "github.com/ghodss/yaml"; + fetch = { + type = "git"; + url = "https://github.com/ghodss/yaml"; + rev = "25d852aebe32c875e9c044af3eef9c7dc6bc777f"; + sha256 = "1w9yq0bxzygc4qwkwwiy7k1k1yviaspcqqv18255k2xkjv5ipccz"; + }; + } + { + goPackagePath = "github.com/google/uuid"; + fetch = { + type = "git"; + url = "https://github.com/google/uuid"; + rev = "c2e93f3ae59f2904160ceaab466009f965df46d6"; + sha256 = "0zw8fvl6jqg0fmv6kmvhss0g4gkrbvgyvl2zgy5wdbdlgp4fja0h"; + }; + } + { + goPackagePath = "github.com/huandu/xstrings"; + fetch = { + type = "git"; + url = "https://github.com/huandu/xstrings"; + rev = "8bbcf2f9ccb55755e748b7644164cd4bdce94c1d"; + sha256 = "1ivvc95514z63k7cpz71l0dwlanffmsh1pijhaqmp41kfiby8rsx"; + }; + } + { + goPackagePath = "github.com/imdario/mergo"; + fetch = { + type = "git"; + url = "https://github.com/imdario/mergo"; + rev = "4c317f2286be3bd0c4f1a0e622edc6398ec4656d"; + sha256 = "0bihha1qsgfjk14yv1hwddv3d8dzxpbjlaxwwyys6lhgxz1cr9h9"; + }; + } + { + goPackagePath = "golang.org/x/crypto"; + fetch = { + type = "git"; + url = "https://go.googlesource.com/crypto"; + rev = "9756ffdc24725223350eb3266ffb92590d28f278"; + sha256 = "0q7hxaaq6lp0v8qqzifvysl47z5rfdlrxkh3d29vsl3wyby3dxl8"; + }; + } + { + goPackagePath = "gopkg.in/alecthomas/kingpin.v2"; + fetch = { + type = "git"; + url = "https://gopkg.in/alecthomas/kingpin.v2"; + rev = "947dcec5ba9c011838740e680966fd7087a71d0d"; + sha256 = "0mndnv3hdngr3bxp7yxfd47cas4prv98sqw534mx7vp38gd88n5r"; + }; + } + { + goPackagePath = "gopkg.in/yaml.v2"; + fetch = { + type = "git"; + url = "https://gopkg.in/yaml.v2"; + rev = "51d6538a90f86fe93ac480b35f37b2be17fef232"; + sha256 = "01wj12jzsdqlnidpyjssmj0r4yavlqy7dwrg7adqd8dicjc4ncsa"; + }; + } +] diff --git a/ops/kontemplate/docs/cluster-config.md b/ops/kontemplate/docs/cluster-config.md new file mode 100644 index 000000000000..4e870161796d --- /dev/null +++ b/ops/kontemplate/docs/cluster-config.md @@ -0,0 +1,106 @@ +Cluster configuration +========================== + +Every cluster (or "environment") that requires individual configuration is specified in +a very simple YAML file in Kontemplate. + +An example file for a hypothetical test environment could look like this: + +```yaml +--- +context: k8s.test.mydomain.com +global: + clusterName: test-cluster + defaultReplicas: 2 +import: + - test-secrets.yaml +include: + - name: gateway + path: tools/nginx + values: + tlsDomains: + - test.oslo.pub + - test.tazj.in + - path: backend + values: + env: test + include: + - name: blog + values: + url: test.tazj.in + - name: pub-service +``` + +<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc --> +**Table of Contents** + +- [Cluster configuration](#cluster-configuration) + - [Fields](#fields) + - [`context`](#context) + - [`global`](#global) + - [`import`](#import) + - [`include`](#include) + - [External variables](#external-variables) + +<!-- markdown-toc end --> + +## Fields + +This is documentation for the individual fields in a cluster context file. + +### `context` + +The `context` field contains the name of the kubectl-context. You can list context names with +'kubectl config get-contexts'. + +This must be set here so that Kontemplate can use the correct context when calling kubectl. + +This field is **required** for `kubectl`-wrapping commands. It can be left out if only the `template`-command is used. + +### `global` + +The `global` field contains a key/value map of variables that should be available to all resource +sets in the cluster. + +This field is **optional**. + +### `import` + +The `import` field contains the file names of additional YAML or JSON files from which global +variables should be loaded. Using this field makes it possible to keep certain configuration that +is the same for some, but not all, clusters in a common place. + +This field is **optional**. + +### `include` + +The `include` field contains the actual resource sets to be included in the cluster. + +Information about the structure of resource sets can be found in the [resource set documentation][]. + +This field is **required**. + +## External variables + +As mentioned above, extra variables can be loaded from additional YAML or JSON files. Assuming you +have a file called `test-secrets.yaml` which contains variables that should be shared between a `test` +and `dev` cluster, you could import it in your context as such: + +```yaml +# test-secrets.yaml: +mySecretVar: foo-bar-12345 + +# test-cluster.yaml: +context: k8s.test.mydomain.com +import: + - test-secrets.yaml + +# dev-cluster.yaml: +context: k8s.dev.mydomain.com +import: + - test-secrets.yaml +``` + +The variable `mySecretVar` is then available as a global variable. + +[resource set documentation]: resource-sets.md diff --git a/ops/kontemplate/docs/resource-sets.md b/ops/kontemplate/docs/resource-sets.md new file mode 100644 index 000000000000..1444dd491249 --- /dev/null +++ b/ops/kontemplate/docs/resource-sets.md @@ -0,0 +1,170 @@ +Resource Sets +================ + +Resource sets are collections of Kubernetes resources that should be passed to `kubectl` together. + +Technically a resource set is simply a folder with a few YAML and/or JSON templates in it. + +<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc --> +**Table of Contents** + +- [Resource Sets](#resource-sets) +- [Creating resource sets](#creating-resource-sets) + - [Default variables](#default-variables) +- [Including resource sets](#including-resource-sets) + - [Fields](#fields) + - [`name`](#name) + - [`path`](#path) + - [`values`](#values) + - [`args`](#args) + - [`include`](#include) + - [Multiple includes](#multiple-includes) + - [Nesting resource sets](#nesting-resource-sets) + - [Caveats](#caveats) + +<!-- markdown-toc end --> + +# Creating resource sets + +Simply create a folder in your Kontemplate repository and place a YAML or JSON file in it. These +files get interpreted as [templates][] during Kontemplate runs and variables (as well as template +logic or functions) will be interpolated. + +Refer to the template documentation for information on how to write templates. + +## Default variables + +Sometimes it is useful to specify default values for variables that should be interpolated during +a run if the [cluster configuration][] does not specify a variable explicitly. + +This can be done simply by placing a `default.yaml` or `default.json` file in the resource set +folder and filling it with key/value pairs of the intended default variables. + +Kontemplate will error during interpolation if any variables are left unspecified. + +# Including resource sets + +Under the cluster configuration `include` key resource sets are included and required variables +are specified. For example: + +```yaml +include: + - name: some-api + values: + version: 1.2-SNAPSHOT +``` + +This will include a resource set from a folder called `some-api` and set the specified `version` variable. + +## Fields + +The available fields when including a resource set are these: + +### `name` + +The `name` field contains the name of the resource set. This name can be used to refer to the resource set +when specifying explicit includes or excludes during a run. + +By default it is assumed that the `name` is the path to the resource set folder, but this can be overridden. + +This field is **required**. + +### `path` + +The `path` field specifies an explicit path to a resource set folder in the case that it should differ from +the resource set's `name`. + +This field is **optional**. + +### `values` + +The `values` field specifies key/values pairs of variables that should be available during templating. + +This field is **optional**. + +### `args` + +The `args` field specifies a list of arguments that should be passed to `kubectl`. + +This field is **optional**. + +### `include` + +The `include` field specifies additional resource sets that should be included and that should inherit the +variables of this resource set. + +The fully qualified names of "nested" resource sets are set to `${PARENT_NAME}/${CHILD_NAME}` and paths are +merged in the same way. + +This makes it easy to organise different resource sets as "groups" to include / exclude them collectively +during runs. + +This field is **optional**. + +## Multiple includes + +Resource sets can be included multiple times with different configurations. In this case it is recommended +to set the `path` and `name` fields explicitly. For example: + +```yaml +include: + - name: forwarder-europe + path: tools/forwarder + values: + source: europe + - name: forwarder-asia + path: tools/forwarder + values: + source: asia +``` + +The two different configurations can be referred to by their set names, but will use the same resource +templates with different configurations. + +## Nesting resource sets + +As mentioned above for the `include` field, resource sets can be nested. This lets users group resource +sets in logical ways using simple folder structures. + +Assuming a folder structure like: + +``` +├── backend +│ ├── auth-api +│ ├── message-api +│ └── order-api +└── frontend + ├── app-page + └── login-page +``` + +With each of these folders being a resource set, they could be included in a cluster configuration like so: + +```yaml +include: + - name: backend + include: + - name: auth-api + - name: message-api + - name: order-api + - name: frontend: + include: + - name: app-page + - name: login-page +``` + +Kontemplate could then be run with, for example, `--include backend` to only include the resource sets nested +in the backend group. Specific resource sets can also be targeted, for example as `--include backend/order-api`. + +Variables specified in the parent resource set are inherited by the children. + +### Caveats + +Two caveats apply that users should be aware of: + +1. The parent resource set can not contain any resource templates itself. + +2. Only one level of nesting is supported. Specifying `include` again on a nested resource set will be ignored. + +[templates]: templates.md +[cluster configuration]: cluster-config.md diff --git a/ops/kontemplate/docs/templates.md b/ops/kontemplate/docs/templates.md new file mode 100644 index 000000000000..32da205108de --- /dev/null +++ b/ops/kontemplate/docs/templates.md @@ -0,0 +1,153 @@ +Kontemplate templates +===================== + +The template file format is based on Go's [templating engine][] in combination +with a small extension library called [sprig][] that adds additional template +functions. + +Go templates can either simply display variables or build more complicated +*pipelines* in which variables are passed to functions for further processing, +or in which conditionals are evaluated for more complex template logic. + +It is recommended that you check out the Golang [documentation][] for the templating +engine in addition to the cherry-picked features listed here. + +<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc --> +**Table of Contents** + +- [Kontemplate templates](#kontemplate-templates) + - [Basic variable interpolation](#basic-variable-interpolation) + - [Example:](#example) + - [Template functions](#template-functions) + - [Examples:](#examples) + - [Conditionals & ranges](#conditionals--ranges) + - [Caveats](#caveats) + +<!-- markdown-toc end --> + +## Basic variable interpolation + +The basic template format uses `{{ .variableName }}` as the interpolation format. + +### Example: + +Assuming that you include a resource set as such: + +``` +- name: api-gateway + values: + internalHost: http://my-internal-host/ +``` + +And the api-gateway resource set includes a ConfigMap (some fields left out for +the example): + +``` +# api-gateway/configmap.yaml: +--- +kind: ConfigMap +metadata: + name: api-gateway-config +data: + internalHost: {{ .internalHost }} +``` + +The resulting output will be: + +``` + +--- +kind: ConfigMap +metadata: + name: api-gateway-config +data: + internalHost: http://my-internal-host/ +``` + +## Template functions + +Go templates support template functions which you can think of as a sort of +shell-like pipeline where text flows through transformations from left to +right. + +Some template functions come from Go's standard library and are listed in the +[Go documentation][]. In addition the functions declared by [sprig][] are +available in kontemplate, as well as five custom functions: + +* `json`: Encodes any supplied data structure as JSON. +* `gitHEAD`: Retrieves the commit hash at Git `HEAD`. +* `passLookup`: Looks up the supplied key in [pass][]. +* `insertFile`: Insert the contents of the given file in the resource + set folder as a string. +* `insertTemplate`: Insert the contents of the given template in the resource + set folder as a string. + +## Examples: + +``` +# With the following values: +name: Donald +certKeyPath: my-website/cert-key + +# The following interpolations are possible: + +{{ .name | upper }} +-> DONALD + +{{ .name | upper | repeat 2 }} +-> DONALD DONALD + +{{ .certKeyPath | passLookup }} +-> Returns content of 'my-website/cert-key' from pass + +{{ gitHEAD }} +-> Returns the Git commit hash at HEAD. +``` + +## Conditionals & ranges + +Some logic is supported in Golang templates and can be used in Kontemplate, too. + +With the following values: + +``` +useKube2IAM: true +servicePorts: + - 8080 + - 9090 +``` + +The following interpolations are possible: + +``` +# Conditionally insert something in the template: +metadata: + annotations: + foo: bar + {{ if .useKube2IAM -}} iam.amazonaws.com/role: my-api {{- end }} +``` + +``` +# Iterate over a list of values +ports: + {{ range .servicePorts }} + - port: {{ . }} + {{ end }} +``` + +Check out the Golang documentation (linked above) for more information about template logic. + +## Caveats + +Kontemplate does not by itself parse any of the content of the templates, which +means that it does not validate whether the resources you supply are valid YAML +or JSON. + +You can perform some validation by using `kontemplate apply --dry-run` which +will make use of the Dry-Run functionality in `kubectl`. + +[templating engine]: https://golang.org/pkg/text/template/ +[documentation]: https://golang.org/pkg/text/template/ +[sprig]: http://masterminds.github.io/sprig/ +[Go documentation]: https://golang.org/pkg/text/template/#hdr-Functions +[pass]: https://www.passwordstore.org/ diff --git a/ops/kontemplate/docs/tips-and-tricks.md b/ops/kontemplate/docs/tips-and-tricks.md new file mode 100644 index 000000000000..5401ac91e5a3 --- /dev/null +++ b/ops/kontemplate/docs/tips-and-tricks.md @@ -0,0 +1,77 @@ +Kontemplate tips & tricks +========================= + +<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc --> +**Table of Contents** + +- [Kontemplate tips & tricks](#kontemplate-tips--tricks) + - [Update Deployments when ConfigMaps change](#update-deployments-when-configmaps-change) + - [direnv & pass](#direnv--pass) + +<!-- markdown-toc end --> + +## Update Deployments when ConfigMaps change + +Kubernetes does [not currently][] have the ability to perform rolling updates +of Deployments and other resource types when `ConfigMap` or `Secret` objects +are updated. + +It is possible to make use of annotations and templating functions in +Kontemplate to force updates to these resources anyways. + +For example: + +```yaml +# A ConfigMap that contains some configuration for your app +--- +kind: ConfigMap +metadata: + name: app-config +data: + app.conf: | + name: {{ .appName }} + foo: bar +``` + +Now whenever the `appName` variable changes or we make an edit to the +`ConfigMap` we would like to update the `Deployment` making use of it, too. We +can do this by adding a hash of the parsed template to the annotations of the +created `Pod` objects: + +```yaml + +--- +kind: Deployment +metadata: + name: app +spec: + template: + metadata: + annotations: + configHash: {{ insertTemplate "app-config.yaml" | sha256sum }} + spec: + containers: + - name: app + # Some details omitted ... + volumeMounts: + - name: config + mountPath: /etc/app/ + volumes: + - name: config + configMap: + name: app-config +``` + +Now any change to the `ConfigMap` - either by directly editing the yaml file or +via a changed template variable - will cause the annotation to change, +triggering a rolling update of all relevant pods. + +## direnv & pass + +Users of `pass` may have multiple different password stores on their machines. +Assuming that `kontemplate` configuration exists somewhere on the filesystem +per project, it is easy to use [direnv][] to switch to the correct +`PASSWORD_STORE_DIR` variable when entering the folder. + +[not currently]: https://github.com/kubernetes/kubernetes/issues/22368 +[direnv]: https://direnv.net/ diff --git a/ops/kontemplate/example/other-config.yaml b/ops/kontemplate/example/other-config.yaml new file mode 100644 index 000000000000..87370569c46e --- /dev/null +++ b/ops/kontemplate/example/other-config.yaml @@ -0,0 +1,7 @@ +--- +apiVersion: extensions/v1beta1 +kind: ConfigMap +metadata: + name: other-config +data: + globalData: {{ .globalVar }} diff --git a/ops/kontemplate/example/prod-cluster.json b/ops/kontemplate/example/prod-cluster.json new file mode 100644 index 000000000000..70e2365f1710 --- /dev/null +++ b/ops/kontemplate/example/prod-cluster.json @@ -0,0 +1,16 @@ +{ + "context": "k8s.prod.mydomain.com", + "global": { + "globalVar": "lizards" + }, + "include": [ + { + "name": "some-api", + "values": { + "version": "1.0-SNAPSHOT-0e6884d", + "importantFeature": true, + "apiPort": 4567 + } + } + ] +} diff --git a/ops/kontemplate/example/prod-cluster.yaml b/ops/kontemplate/example/prod-cluster.yaml new file mode 100644 index 000000000000..9f300a492080 --- /dev/null +++ b/ops/kontemplate/example/prod-cluster.yaml @@ -0,0 +1,17 @@ +--- +context: k8s.prod.mydomain.com +global: + globalVar: lizards +include: + # By default resource sets are included from a folder with the same + # name as the resource set's name + - name: some-api + values: + version: 1.0-0e6884d + importantFeature: true + apiPort: 4567 + + # Paths can also be specified manually (and point at single template + # files!) + - name: other-config + path: other-config.yaml diff --git a/ops/kontemplate/example/some-api/some-api.yaml b/ops/kontemplate/example/some-api/some-api.yaml new file mode 100644 index 000000000000..f0188f9dbde3 --- /dev/null +++ b/ops/kontemplate/example/some-api/some-api.yaml @@ -0,0 +1,52 @@ +--- +apiVersion: v1 +kind: Secret +metadata: + name: secret-certificate +data: + cert.pem: {{ passLookup "my/secret/certificate" | b64enc }} +--- +apiVersion: extensions/v1beta1 +kind: ConfigMap +metadata: + name: some-config +data: + # The content of the example configuration file is templated in here + # by the 'insertFile' function and indented for YAML-compatibility + # with the 'indent' function: + some.cfg: | +{{ insertFile "some.cfg" | indent 4 }} +--- +apiVersion: extensions/v1beta1 +kind: Deployment +metadata: + name: some-api +spec: + replicas: 1 + template: + metadata: + labels: + app: some-api + spec: + containers: + - image: my.container.repo/some-api:{{ .version }} + name: some-api + env: + - name: ENABLE_IMPORTANT_FEATURE + value: {{ .importantFeature }} + - name: SOME_GLOBAL_VAR + value: {{ .globalVar }} +--- +apiVersion: v1 +kind: Service +metadata: + name: some-api + labels: + app: some-api +spec: + selector: + app: some-api + ports: + - port: 80 + targetPort: {{ .apiPort }} + name: http diff --git a/ops/kontemplate/example/some-api/some.cfg b/ops/kontemplate/example/some-api/some.cfg new file mode 100644 index 000000000000..733d5e16789a --- /dev/null +++ b/ops/kontemplate/example/some-api/some.cfg @@ -0,0 +1,4 @@ +{ + "something": 1542, + "other-thing": "да" +} diff --git a/ops/kontemplate/image/Dockerfile b/ops/kontemplate/image/Dockerfile new file mode 100644 index 000000000000..a40fa83b0867 --- /dev/null +++ b/ops/kontemplate/image/Dockerfile @@ -0,0 +1,15 @@ +FROM alpine:3.10 + +ADD hashes /root/hashes +ADD https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kubectl /usr/bin/kubectl +ADD https://github.com/tazjin/kontemplate/releases/download/v1.8.0/kontemplate-1.8.0-6c3b299-linux-amd64.tar.gz /tmp/kontemplate.tar.gz + +# Pass release version is 1.7.3 +ADD https://raw.githubusercontent.com/zx2c4/password-store/74fdfb5022f317ad48d449e29543710bdad1afda/src/password-store.sh /usr/bin/pass + +RUN sha256sum -c /root/hashes && \ + apk add -U bash tree gnupg git && \ + chmod +x /usr/bin/kubectl /usr/bin/pass && \ + tar xzvf /tmp/kontemplate.tar.gz && \ + mv kontemplate /usr/bin/kontemplate && \ + /usr/bin/kontemplate version diff --git a/ops/kontemplate/image/README.md b/ops/kontemplate/image/README.md new file mode 100644 index 000000000000..fe04765401be --- /dev/null +++ b/ops/kontemplate/image/README.md @@ -0,0 +1,12 @@ +Kontemplate Docker image +======================== + +This builds a simple Docker image available on the Docker Hub as `tazjin/kontemplate`. + +Builds are automated based on the Dockerfile contained here. + +It contains both `kontemplate` and `kubectl` and can be used as part of container-based +CI pipelines. + +`pass` and its dependencies are also installed to enable the use of the `passLookup` +template function if desired. diff --git a/ops/kontemplate/image/hashes b/ops/kontemplate/image/hashes new file mode 100644 index 000000000000..bfd87c0201e7 --- /dev/null +++ b/ops/kontemplate/image/hashes @@ -0,0 +1,2 @@ +a39dfdd77e4655acaabe301285cf389cb5fc8145060f5677dc93db1cc20911a4 /tmp/kontemplate.tar.gz +6e805054a1fb2280abb53f75b57a1b92bf9c66ffe0d2cdcd46e81b079d93c322 /usr/bin/kubectl diff --git a/ops/kontemplate/main.go b/ops/kontemplate/main.go new file mode 100644 index 000000000000..e55d42465c6b --- /dev/null +++ b/ops/kontemplate/main.go @@ -0,0 +1,242 @@ +// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +// +// Kontemplate is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. + +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. + +package main + +import ( + "fmt" + "os" + "os/exec" + "strings" + + "github.com/tazjin/kontemplate/context" + "github.com/tazjin/kontemplate/templater" + "gopkg.in/alecthomas/kingpin.v2" +) + +const version string = "1.8.0" + +// This variable will be initialised by the Go linker during the builder +var gitHash string + +var ( + app = kingpin.New("kontemplate", "simple Kubernetes resource templating") + + // Global flags + includes = app.Flag("include", "Resource sets to include explicitly").Short('i').Strings() + excludes = app.Flag("exclude", "Resource sets to exclude explicitly").Short('e').Strings() + variables = app.Flag("var", "Provide variables to templates explicitly").Strings() + kubectlBin = app.Flag("kubectl", "Path to the kubectl binary (default 'kubectl')").Default("kubectl").String() + + // Commands + template = app.Command("template", "Template resource sets and print them") + templateFile = template.Arg("file", "Cluster configuration file to use").Required().String() + templateOutputDir = template.Flag("output", "Output directory in which to save templated files instead of printing them").Short('o').String() + + apply = app.Command("apply", "Template resources and pass to 'kubectl apply'") + applyFile = apply.Arg("file", "Cluster configuration file to use").Required().String() + applyDryRun = apply.Flag("dry-run", "Print remote operations without executing them").Default("false").Bool() + + replace = app.Command("replace", "Template resources and pass to 'kubectl replace'") + replaceFile = replace.Arg("file", "Cluster configuration file to use").Required().String() + + delete = app.Command("delete", "Template resources and pass to 'kubectl delete'") + deleteFile = delete.Arg("file", "Cluster configuration file to use").Required().String() + + create = app.Command("create", "Template resources and pass to 'kubectl create'") + createFile = create.Arg("file", "Cluster configuration file to use").Required().String() + + versionCmd = app.Command("version", "Show kontemplate version") +) + +func main() { + app.HelpFlag.Short('h') + + switch kingpin.MustParse(app.Parse(os.Args[1:])) { + case template.FullCommand(): + templateCommand() + + case apply.FullCommand(): + applyCommand() + + case replace.FullCommand(): + replaceCommand() + + case delete.FullCommand(): + deleteCommand() + + case create.FullCommand(): + createCommand() + + case versionCmd.FullCommand(): + versionCommand() + } +} + +func versionCommand() { + if gitHash == "" { + fmt.Printf("Kontemplate version %s (git commit unknown)\n", version) + } else { + fmt.Printf("Kontemplate version %s (git commit: %s)\n", version, gitHash) + } +} + +func templateCommand() { + _, resourceSets := loadContextAndResources(templateFile) + + for _, rs := range *resourceSets { + if len(rs.Resources) == 0 { + fmt.Fprintf(os.Stderr, "Warning: Resource set '%s' does not exist or contains no valid templates\n", rs.Name) + continue + } + + if *templateOutputDir != "" { + templateIntoDirectory(templateOutputDir, rs) + } else { + for _, r := range rs.Resources { + fmt.Fprintf(os.Stderr, "Rendered file %s/%s:\n", rs.Name, r.Filename) + fmt.Println(r.Rendered) + } + } + } +} + +func templateIntoDirectory(outputDir *string, rs templater.RenderedResourceSet) { + // Attempt to create the output directory if it does not + // already exist: + if err := os.MkdirAll(*templateOutputDir, 0775); err != nil { + app.Fatalf("Could not create output directory: %v\n", err) + } + + // Nested resource sets may contain slashes in their names. + // These are replaced with dashes for the purpose of writing a + // flat list of output files: + setName := strings.Replace(rs.Name, "/", "-", -1) + + for _, r := range rs.Resources { + filename := fmt.Sprintf("%s/%s-%s", *templateOutputDir, setName, r.Filename) + fmt.Fprintf(os.Stderr, "Writing file %s\n", filename) + + file, err := os.Create(filename) + if err != nil { + app.Fatalf("Could not create file %s: %v\n", filename, err) + } + + _, err = fmt.Fprintf(file, r.Rendered) + if err != nil { + app.Fatalf("Error writing file %s: %v\n", filename, err) + } + } +} + +func applyCommand() { + ctx, resources := loadContextAndResources(applyFile) + + var kubectlArgs []string + + if *applyDryRun { + kubectlArgs = []string{"apply", "-f", "-", "--dry-run"} + } else { + kubectlArgs = []string{"apply", "-f", "-"} + } + + if err := runKubectlWithResources(ctx, &kubectlArgs, resources); err != nil { + failWithKubectlError(err) + } +} + +func replaceCommand() { + ctx, resources := loadContextAndResources(replaceFile) + args := []string{"replace", "--save-config=true", "-f", "-"} + + if err := runKubectlWithResources(ctx, &args, resources); err != nil { + failWithKubectlError(err) + } +} + +func deleteCommand() { + ctx, resources := loadContextAndResources(deleteFile) + args := []string{"delete", "-f", "-"} + + if err := runKubectlWithResources(ctx, &args, resources); err != nil { + failWithKubectlError(err) + } +} + +func createCommand() { + ctx, resources := loadContextAndResources(createFile) + args := []string{"create", "--save-config=true", "-f", "-"} + + if err := runKubectlWithResources(ctx, &args, resources); err != nil { + failWithKubectlError(err) + } +} + +func loadContextAndResources(file *string) (*context.Context, *[]templater.RenderedResourceSet) { + ctx, err := context.LoadContext(*file, variables) + if err != nil { + app.Fatalf("Error loading context: %v\n", err) + } + + resources, err := templater.LoadAndApplyTemplates(includes, excludes, ctx) + if err != nil { + app.Fatalf("Error templating resource sets: %v\n", err) + } + + return ctx, &resources +} + +func runKubectlWithResources(c *context.Context, kubectlArgs *[]string, resourceSets *[]templater.RenderedResourceSet) error { + argsWithContext := append(*kubectlArgs, fmt.Sprintf("--context=%s", c.Name)) + + for _, rs := range *resourceSets { + if len(rs.Resources) == 0 { + fmt.Fprintf(os.Stderr, "Warning: Resource set '%s' contains no valid templates\n", rs.Name) + continue + } + + argsWithResourceSetArgs := append(argsWithContext, rs.Args...) + + kubectl := exec.Command(*kubectlBin, argsWithResourceSetArgs...) + + stdin, err := kubectl.StdinPipe() + if err != nil { + return fmt.Errorf("kubectl error: %v", err) + } + + kubectl.Stdout = os.Stdout + kubectl.Stderr = os.Stderr + + if err = kubectl.Start(); err != nil { + return fmt.Errorf("kubectl error: %v", err) + } + + for _, r := range rs.Resources { + fmt.Printf("Passing file %s/%s to kubectl\n", rs.Name, r.Filename) + fmt.Fprintln(stdin, r.Rendered) + } + stdin.Close() + + if err = kubectl.Wait(); err != nil { + return err + } + } + + return nil +} + +func failWithKubectlError(err error) { + app.Fatalf("Kubectl error: %v\n", err) +} diff --git a/ops/kontemplate/release.nix b/ops/kontemplate/release.nix new file mode 100644 index 000000000000..4af08f50c7bb --- /dev/null +++ b/ops/kontemplate/release.nix @@ -0,0 +1,54 @@ +# Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +# +# This file is part of Kontemplate. +# +# Kontemplate is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This file is the Nix derivation used to build release binaries for +# several different architectures and operating systems. + +let pkgs = import ((import <nixpkgs> {}).fetchFromGitHub { + owner = "NixOS"; + repo = "nixpkgs-channels"; + rev = "541d9cce8af7a490fb9085305939569567cb58e6"; + sha256 = "0jgz72hhzkd5vyq5v69vpljjlnf0lqaz7fh327bvb3cvmwbfxrja"; +}) {}; +in with pkgs; buildGoPackage rec { + name = "kontemplate-${version}"; + version = "master"; + src = ./.; + goPackagePath = "github.com/tazjin/kontemplate"; + goDeps = ./deps.nix; + + # This configuration enables the building of statically linked + # executables. For some reason, those will have multiple references + # to the Go compiler's installation path in them, which is the + # reason for setting the 'allowGoReference' flag. + dontStrip = true; # Linker configuration handles stripping + allowGoReference = true; + CGO_ENABLED="0"; + GOCACHE="off"; + + # Configure release builds via the "build-matrix" script: + buildInputs = [ git ]; + buildPhase = '' + cd go/src/${goPackagePath} + patchShebangs build-release.sh + ./build-release.sh build + ''; + + outputs = [ "out" ]; + installPhase = '' + mkdir $out + cp -r release/ $out + ''; + + meta = with lib; { + description = "A resource templating helper for Kubernetes"; + homepage = "http://kontemplate.works/"; + license = licenses.gpl3; + }; +} diff --git a/ops/kontemplate/templater/dns.go b/ops/kontemplate/templater/dns.go new file mode 100644 index 000000000000..6cd974dd9324 --- /dev/null +++ b/ops/kontemplate/templater/dns.go @@ -0,0 +1,35 @@ +// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +// +// This file is part of Kontemplate. +// +// Kontemplate is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This file contains the implementation of a template function for retrieving +// IP addresses from DNS + +package templater + +import ( + "fmt" + "net" + "os" +) + +func GetIPsFromDNS(host string) ([]interface{}, error) { + fmt.Fprintf(os.Stderr, "Attempting to look up IP for %s in DNS\n", host) + ips, err := net.LookupIP(host) + + if err != nil { + return nil, fmt.Errorf("IP address lookup failed: %v", err) + } + + var result []interface{} = make([]interface{}, len(ips)) + for i, ip := range ips { + result[i] = ip + } + + return result, nil +} diff --git a/ops/kontemplate/templater/pass.go b/ops/kontemplate/templater/pass.go new file mode 100644 index 000000000000..f7fbcb433de5 --- /dev/null +++ b/ops/kontemplate/templater/pass.go @@ -0,0 +1,34 @@ +// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +// +// This file is part of Kontemplate. +// +// Kontemplate is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This file contains the implementation of a template function for retrieving +// variables from 'pass', the standard UNIX password manager. + +package templater + +import ( + "fmt" + "os" + "os/exec" + "strings" +) + +func GetFromPass(key string) (string, error) { + fmt.Fprintf(os.Stderr, "Attempting to look up %s in pass\n", key) + pass := exec.Command("pass", "show", key) + + output, err := pass.CombinedOutput() + if err != nil { + return "", fmt.Errorf("Pass lookup failed: %s (%v)", output, err) + } + + trimmed := strings.TrimSpace(string(output)) + + return trimmed, nil +} diff --git a/ops/kontemplate/templater/templater.go b/ops/kontemplate/templater/templater.go new file mode 100644 index 000000000000..a8f0c670a603 --- /dev/null +++ b/ops/kontemplate/templater/templater.go @@ -0,0 +1,236 @@ +// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +// +// This file is part of Kontemplate. +// +// Kontemplate is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. + +package templater + +import ( + "bytes" + "encoding/json" + "fmt" + "io/ioutil" + "os" + "os/exec" + "path" + "strings" + "text/template" + + "github.com/Masterminds/sprig" + "github.com/tazjin/kontemplate/context" + "github.com/tazjin/kontemplate/util" +) + +const failOnMissingKeys string = "missingkey=error" + +type RenderedResource struct { + Filename string + Rendered string +} + +type RenderedResourceSet struct { + Name string + Resources []RenderedResource + Args []string +} + +func LoadAndApplyTemplates(include *[]string, exclude *[]string, c *context.Context) ([]RenderedResourceSet, error) { + limitedResourceSets := applyLimits(&c.ResourceSets, include, exclude) + renderedResourceSets := make([]RenderedResourceSet, 0) + + if len(*limitedResourceSets) == 0 { + return renderedResourceSets, fmt.Errorf("No valid resource sets included!") + } + + for _, rs := range *limitedResourceSets { + set, err := processResourceSet(c, &rs) + + if err != nil { + return nil, err + } + + renderedResourceSets = append(renderedResourceSets, *set) + } + + return renderedResourceSets, nil +} + +func processResourceSet(ctx *context.Context, rs *context.ResourceSet) (*RenderedResourceSet, error) { + fmt.Fprintf(os.Stderr, "Loading resources for %s\n", rs.Name) + + fileInfo, err := os.Stat(rs.Path) + if err != nil { + return nil, err + } + + var files []os.FileInfo + var resources []RenderedResource + + // Treat single-file resource paths separately from resource + // sets containing multiple templates + if fileInfo.IsDir() { + // Explicitly discard this error, which will give us an empty + // list of files instead. + // This will end up printing a warning to the user, but it + // won't stop the rest of the process. + files, _ = ioutil.ReadDir(rs.Path) + resources, err = processFiles(ctx, rs, files) + if err != nil { + return nil, err + } + } else { + resource, err := templateFile(ctx, rs, rs.Path) + if err != nil { + return nil, err + } + + resources = []RenderedResource{resource} + } + + return &RenderedResourceSet{ + Name: rs.Name, + Resources: resources, + Args: rs.Args, + }, nil +} + +func processFiles(ctx *context.Context, rs *context.ResourceSet, files []os.FileInfo) ([]RenderedResource, error) { + resources := make([]RenderedResource, 0) + + for _, file := range files { + if !file.IsDir() && isResourceFile(file) { + path := path.Join(rs.Path, file.Name()) + res, err := templateFile(ctx, rs, path) + + if err != nil { + return resources, err + } + + resources = append(resources, res) + } + } + + return resources, nil +} + +func templateFile(ctx *context.Context, rs *context.ResourceSet, filepath string) (RenderedResource, error) { + var resource RenderedResource + + tpl, err := template.New(path.Base(filepath)).Funcs(templateFuncs(ctx, rs)).Option(failOnMissingKeys).ParseFiles(filepath) + if err != nil { + return resource, fmt.Errorf("Could not load template %s: %v", filepath, err) + } + + var b bytes.Buffer + err = tpl.Execute(&b, rs.Values) + if err != nil { + return resource, fmt.Errorf("Error while templating %s: %v", filepath, err) + } + + resource = RenderedResource{ + Filename: path.Base(filepath), + Rendered: b.String(), + } + + return resource, nil +} + +// Applies the limits of explicitly included or excluded resources and returns the updated resource set. +// Exclude takes priority over include +func applyLimits(rs *[]context.ResourceSet, include *[]string, exclude *[]string) *[]context.ResourceSet { + if len(*include) == 0 && len(*exclude) == 0 { + return rs + } + + // Exclude excluded resource sets + excluded := make([]context.ResourceSet, 0) + for _, r := range *rs { + if !matchesResourceSet(exclude, &r) { + excluded = append(excluded, r) + } + } + + // Include included resource sets + if len(*include) == 0 { + return &excluded + } + included := make([]context.ResourceSet, 0) + for _, r := range excluded { + if matchesResourceSet(include, &r) { + included = append(included, r) + } + } + + return &included +} + +// Check whether an include/exclude string slice matches a resource set +func matchesResourceSet(s *[]string, rs *context.ResourceSet) bool { + for _, r := range *s { + r = strings.TrimSuffix(r, "/") + if r == rs.Name || r == rs.Parent { + return true + } + } + + return false +} + +func templateFuncs(c *context.Context, rs *context.ResourceSet) template.FuncMap { + m := sprig.TxtFuncMap() + m["json"] = func(data interface{}) string { + b, _ := json.Marshal(data) + return string(b) + } + m["passLookup"] = GetFromPass + m["gitHEAD"] = func() (string, error) { + out, err := exec.Command("git", "-C", c.BaseDir, "rev-parse", "HEAD").Output() + if err != nil { + return "", err + } + output := strings.TrimSpace(string(out)) + return output, nil + } + m["lookupIPAddr"] = GetIPsFromDNS + m["insertFile"] = func(file string) (string, error) { + data, err := ioutil.ReadFile(path.Join(rs.Path, file)) + if err != nil { + return "", err + } + + return string(data), nil + } + m["insertTemplate"] = func(file string) (string, error) { + data, err := templateFile(c, rs, path.Join(rs.Path, file)) + if err != nil { + return "", err + } + + return data.Rendered, nil + } + m["default"] = func(defaultVal interface{}, varName string) interface{} { + if val, ok := rs.Values[varName]; ok { + return val + } + + return defaultVal + } + return m +} + +// Checks whether a file is a resource file (i.e. is YAML or JSON) and not a default values file. +func isResourceFile(f os.FileInfo) bool { + for _, defaultFile := range util.DefaultFilenames { + if f.Name() == defaultFile { + return false + } + } + + return strings.HasSuffix(f.Name(), "yaml") || + strings.HasSuffix(f.Name(), "yml") || + strings.HasSuffix(f.Name(), "json") +} diff --git a/ops/kontemplate/templater/templater_test.go b/ops/kontemplate/templater/templater_test.go new file mode 100644 index 000000000000..c20858c203b4 --- /dev/null +++ b/ops/kontemplate/templater/templater_test.go @@ -0,0 +1,205 @@ +// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +// +// This file is part of Kontemplate. +// +// Kontemplate is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. + +package templater + +import ( + "github.com/tazjin/kontemplate/context" + "reflect" + "strings" + "testing" +) + +func TestApplyNoLimits(t *testing.T) { + resources := []context.ResourceSet{ + { + Name: "testResourceSet1", + }, + { + Name: "testResourceSet2", + }, + } + + result := applyLimits(&resources, &[]string{}, &[]string{}) + + if !reflect.DeepEqual(resources, *result) { + t.Error("Resource set slice changed, but shouldn't have.") + t.Errorf("Expected: %v\nResult: %v\n", resources, *result) + t.Fail() + } +} + +func TestApplyIncludeLimits(t *testing.T) { + resources := []context.ResourceSet{ + { + Name: "testResourceSet1", + }, + { + Name: "testResourceSet2", + }, + { + Name: "testResourceSet3", + Parent: "included", + }, + } + + includes := []string{"testResourceSet1", "included"} + + result := applyLimits(&resources, &includes, &[]string{}) + + expected := []context.ResourceSet{ + { + Name: "testResourceSet1", + }, + { + Name: "testResourceSet3", + Parent: "included", + }, + } + + if !reflect.DeepEqual(expected, *result) { + t.Error("Result does not contain expected resource sets.") + t.Errorf("Expected: %v\nResult: %v\n", expected, *result) + t.Fail() + } +} + +func TestApplyExcludeLimits(t *testing.T) { + resources := []context.ResourceSet{ + { + Name: "testResourceSet1", + }, + { + Name: "testResourceSet2", + }, + { + Name: "testResourceSet3", + Parent: "included", + }, + } + + exclude := []string{"testResourceSet2"} + + result := applyLimits(&resources, &[]string{}, &exclude) + + expected := []context.ResourceSet{ + { + Name: "testResourceSet1", + }, + { + Name: "testResourceSet3", + Parent: "included", + }, + } + + if !reflect.DeepEqual(expected, *result) { + t.Error("Result does not contain expected resource sets.") + t.Errorf("Expected: %v\nResult: %v\n", expected, *result) + t.Fail() + } +} + +func TestApplyLimitsExcludeIncludePrecedence(t *testing.T) { + resources := []context.ResourceSet{ + { + Name: "collection/nested1", + Parent: "collection", + }, + { + Name: "collection/nested2", + Parent: "collection", + }, + { + Name: "collection/nested3", + Parent: "collection", + }, + { + Name: "something-else", + }, + } + + include := []string{"collection"} + exclude := []string{"collection/nested2"} + + result := applyLimits(&resources, &include, &exclude) + + expected := []context.ResourceSet{ + { + Name: "collection/nested1", + Parent: "collection", + }, + { + Name: "collection/nested3", + Parent: "collection", + }, + } + + if !reflect.DeepEqual(expected, *result) { + t.Error("Result does not contain expected resource sets.") + t.Errorf("Expected: %v\nResult: %v\n", expected, *result) + t.Fail() + } +} + +func TestFailOnMissingKeys(t *testing.T) { + ctx := context.Context{} + resourceSet := context.ResourceSet{} + + _, err := templateFile(&ctx, &resourceSet, "testdata/test-template.txt") + + if err == nil { + t.Errorf("Template with missing keys should have failed.\n") + t.Fail() + } + + if !strings.Contains(err.Error(), "map has no entry for key \"testName\"") { + t.Errorf("Templating failed with unexpected error: %v\n", err) + } +} + +func TestDefaultTemplateFunction(t *testing.T) { + ctx := context.Context{} + resourceSet := context.ResourceSet{} + + res, err := templateFile(&ctx, &resourceSet, "testdata/test-default.txt") + + if err != nil { + t.Errorf("Templating with default values should have succeeded.\n") + t.Fail() + } + + if res.Rendered != "defaultValue\n" { + t.Error("Result does not contain expected rendered default value.") + t.Fail() + } +} + +func TestInsertTemplateFunction(t *testing.T) { + ctx := context.Context{} + resourceSet := context.ResourceSet{ + Path: "testdata", + Values: map[string]interface{}{ + "testName": "TestInsertTemplateFunction", + }, + } + + res, err := templateFile(&ctx, &resourceSet, "testdata/test-insertTemplate.txt") + + if err != nil { + t.Error(err) + t.Errorf("Templating with an insertTemplate call should have succeeded.\n") + t.Fail() + } + + if res.Rendered != "Inserting \"Template for test TestInsertTemplateFunction\".\n" { + t.Error("Result does not contain expected rendered template value.") + t.Error(res.Rendered) + t.Fail() + } +} diff --git a/ops/kontemplate/templater/testdata/test-default.txt b/ops/kontemplate/templater/testdata/test-default.txt new file mode 100644 index 000000000000..4f7997bd69d2 --- /dev/null +++ b/ops/kontemplate/templater/testdata/test-default.txt @@ -0,0 +1 @@ +{{ default "defaultValue" "missingVar" }} diff --git a/ops/kontemplate/templater/testdata/test-insertTemplate.txt b/ops/kontemplate/templater/testdata/test-insertTemplate.txt new file mode 100644 index 000000000000..8155e174fe00 --- /dev/null +++ b/ops/kontemplate/templater/testdata/test-insertTemplate.txt @@ -0,0 +1 @@ +Inserting "{{ insertTemplate "test-template.txt" | trim }}". diff --git a/ops/kontemplate/templater/testdata/test-template.txt b/ops/kontemplate/templater/testdata/test-template.txt new file mode 100644 index 000000000000..06f1cfc630c3 --- /dev/null +++ b/ops/kontemplate/templater/testdata/test-template.txt @@ -0,0 +1 @@ +Template for test {{ .testName }} diff --git a/ops/kontemplate/util/util.go b/ops/kontemplate/util/util.go new file mode 100644 index 000000000000..56fa1e3fc9c5 --- /dev/null +++ b/ops/kontemplate/util/util.go @@ -0,0 +1,58 @@ +// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +// +// This file is part of Kontemplate. +// +// Kontemplate is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. + +package util + +import ( + "io/ioutil" + + "github.com/ghodss/yaml" +) + +// Filenames excluded from templating for the purpose of containing default variable values inside a resource set. +var DefaultFilenames []string = []string{"default.yml", "default.yaml", "default.json"} + +// Merges two maps together. Values from the second map override values in the first map. +// The returned map is new if anything was changed. +func Merge(in1 *map[string]interface{}, in2 *map[string]interface{}) *map[string]interface{} { + if in1 == nil || len(*in1) == 0 { + return in2 + } + + if in2 == nil || len(*in2) == 0 { + return in1 + } + + new := make(map[string]interface{}) + for k, v := range *in1 { + new[k] = v + } + + for k, v := range *in2 { + new[k] = v + } + + return &new +} + +// Loads either a YAML or JSON file from the specified path and +// deserialises it into the provided interface. +func LoadData(filename string, addr interface{}) error { + file, err := ioutil.ReadFile(filename) + if err != nil { + return err + } + + err = yaml.Unmarshal(file, addr) + if err != nil { + return err + } + + return nil +} diff --git a/ops/kontemplate/util/util_test.go b/ops/kontemplate/util/util_test.go new file mode 100644 index 000000000000..53c56081758c --- /dev/null +++ b/ops/kontemplate/util/util_test.go @@ -0,0 +1,83 @@ +// Copyright (C) 2016-2019 Vincent Ambo <mail@tazj.in> +// +// This file is part of Kontemplate. +// +// Kontemplate is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. + +package util + +import ( + "reflect" + "testing" +) + +func TestMergeWithEmptyMap(t *testing.T) { + testMap := map[string]interface{}{ + "foo": "bar", + } + + empty := make(map[string]interface{}) + + res1 := Merge(&testMap, &empty) + res2 := Merge(&empty, &testMap) + + if res1 != &testMap || res2 != &testMap { + t.Error("A new map was returned incorrectly.") + t.Fail() + } +} + +func TestMergeWithNilMap(t *testing.T) { + testMap := map[string]interface{}{ + "foo": "bar", + } + + res1 := Merge(&testMap, nil) + res2 := Merge(nil, &testMap) + + if res1 != &testMap || res2 != &testMap { + t.Error("A new map was returned incorrectly.") + t.Fail() + } +} + +func TestMergeMaps(t *testing.T) { + map1 := map[string]interface{}{ + "foo": "bar", + } + + map2 := map[string]interface{}{ + "bar": "baz", + } + + result := Merge(&map1, &map2) + expected := map[string]interface{}{ + "foo": "bar", + "bar": "baz", + } + + if !reflect.DeepEqual(*result, expected) { + t.Error("Maps were merged incorrectly.") + t.Fail() + } +} + +func TestMergeMapsPrecedence(t *testing.T) { + map1 := map[string]interface{}{ + "foo": "incorrect", + } + + map2 := map[string]interface{}{ + "foo": "correct", + } + + result := Merge(&map1, &map2) + + if (*result)["foo"] != "correct" { + t.Error("Map merge precedence test failed.") + t.Fail() + } +} diff --git a/ops/mq_cli/.gitignore b/ops/mq_cli/.gitignore new file mode 100644 index 000000000000..5bd19a47c3b3 --- /dev/null +++ b/ops/mq_cli/.gitignore @@ -0,0 +1,4 @@ +/target/ +**/*.rs.bk +.idea/ +*.iml diff --git a/ops/mq_cli/CODE_OF_CONDUCT.md b/ops/mq_cli/CODE_OF_CONDUCT.md new file mode 100644 index 000000000000..c4013ac13ebc --- /dev/null +++ b/ops/mq_cli/CODE_OF_CONDUCT.md @@ -0,0 +1,20 @@ +A SERMON ON ETHICS AND LOVE +=========================== + +One day Mal-2 asked the messenger spirit Saint Gulik to approach the Goddess and request Her presence for some desperate advice. Shortly afterwards the radio came on by itself, and an ethereal female Voice said **YES?** + +"O! Eris! Blessed Mother of Man! Queen of Chaos! Daughter of Discord! Concubine of Confusion! O! Exquisite Lady, I beseech You to lift a heavy burden from my heart!" + +**WHAT BOTHERS YOU, MAL? YOU DON'T SOUND WELL.** + +"I am filled with fear and tormented with terrible visions of pain. Everywhere people are hurting one another, the planet is rampant with injustices, whole societies plunder groups of their own people, mothers imprison sons, children perish while brothers war. O, woe." + +**WHAT IS THE MATTER WITH THAT, IF IT IS WHAT YOU WANT TO DO?** + +"But nobody Wants it! Everybody hates it." + +**OH. WELL, THEN *STOP*.** + +At which moment She turned herself into an aspirin commercial and left The Polyfather stranded alone with his species. + +SINISTER DEXTER HAS A BROKEN SPIROMETER. diff --git a/ops/mq_cli/Cargo.lock b/ops/mq_cli/Cargo.lock new file mode 100644 index 000000000000..f418d77c34ff --- /dev/null +++ b/ops/mq_cli/Cargo.lock @@ -0,0 +1,159 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "ansi_term" +version = "0.11.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +dependencies = [ + "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)", +] + +[[package]] +name = "atty" +version = "0.2.14" +source = "registry+https://github.com/rust-lang/crates.io-index" +dependencies = [ + "hermit-abi 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)", + "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)", + "winapi 0.3.8 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["Vincent Ambo <mail@tazj.in>"] + +[dependencies] +clap = "2.33" +libc = "0.2" +nix = "0.16" +posix_mq = "0.9" diff --git a/ops/mq_cli/LICENSE b/ops/mq_cli/LICENSE new file mode 100644 index 000000000000..e289cbab81e0 --- /dev/null +++ b/ops/mq_cli/LICENSE @@ -0,0 +1,22 @@ +MIT License + +Copyright (c) 2017-2018 Langler AS +Copyright (c) 2019-2020 Vincent Ambo + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/ops/mq_cli/README.md b/ops/mq_cli/README.md new file mode 100644 index 000000000000..e612553e7447 --- /dev/null +++ b/ops/mq_cli/README.md @@ -0,0 +1,31 @@ +mq-cli +====== + +This project provides a very simple CLI interface to [POSIX message queues][]. + +It can be used to create and inspect queues, as well as send and +receive messages from them. + +``` +1.0.0 +Administrate and inspect POSIX message queues + +USAGE: + mq <SUBCOMMAND> + +FLAGS: + -h, --help Prints help information + -V, --version Prints version information + +SUBCOMMANDS: + create Create a new queue + help Prints this message or the help of the given subcommand(s) + inspect inspect details about a queue + ls list message queues + receive Receive a message from a queue + rlimit Get the message queue rlimit + send Send a message to a queue +``` + + +[POSIX message queues]: https://linux.die.net/man/7/mq_overview diff --git a/ops/mq_cli/default.nix b/ops/mq_cli/default.nix new file mode 100644 index 000000000000..6b0e32009a66 --- /dev/null +++ b/ops/mq_cli/default.nix @@ -0,0 +1,3 @@ +{ depot, ... }: + +depot.third_party.naersk.buildPackage ./. diff --git a/ops/mq_cli/src/main.rs b/ops/mq_cli/src/main.rs new file mode 100644 index 000000000000..55ff0064295d --- /dev/null +++ b/ops/mq_cli/src/main.rs @@ -0,0 +1,223 @@ +extern crate clap; +extern crate posix_mq; +extern crate libc; +extern crate nix; + +use clap::{App, SubCommand, Arg, ArgMatches, AppSettings}; +use posix_mq::{Name, Queue, Message}; +use std::fs::{read_dir, File}; +use std::io::{self, Read, Write}; +use std::process::exit; + +fn run_ls() { + let mqueues = read_dir("/dev/mqueue") + .expect("Could not read message queues"); + + for queue in mqueues { + let path = queue.unwrap().path(); + let status = { + let mut file = File::open(&path) + .expect("Could not open queue file"); + + let mut content = String::new(); + file.read_to_string(&mut content).expect("Could not read queue file"); + + content + }; + + let queue_name = path.components().last().unwrap() + .as_os_str() + .to_string_lossy(); + + println!("/{}: {}", queue_name, status) + }; +} + +fn run_inspect(queue_name: &str) { + let name = Name::new(queue_name).expect("Invalid queue name"); + let queue = Queue::open(name).expect("Could not open queue"); + + println!("Queue {}:\n", queue_name); + println!("Max. message size: {} bytes", queue.max_size()); + println!("Max. # of pending messages: {}", queue.max_pending()); +} + +fn run_create(cmd: &ArgMatches) { + if let Some(rlimit) = cmd.value_of("rlimit") { + set_rlimit(rlimit.parse().expect("Invalid rlimit value")); + } + + let name = Name::new(cmd.value_of("queue").unwrap()) + .expect("Invalid queue name"); + + let max_pending: i64 = cmd.value_of("max-pending").unwrap().parse().unwrap(); + let max_size: i64 = cmd.value_of("max-size").unwrap().parse().unwrap(); + + let queue = Queue::create(name, max_pending, max_size * 1024); + + match queue { + Ok(_) => println!("Queue created successfully"), + Err(e) => { + writeln!(io::stderr(), "Could not create queue: {}", e).ok(); + exit(1); + }, + }; +} + +fn run_receive(queue_name: &str) { + let name = Name::new(queue_name).expect("Invalid queue name"); + let queue = Queue::open(name).expect("Could not open queue"); + + let message = match queue.receive() { + Ok(msg) => msg, + Err(e) => { + writeln!(io::stderr(), "Failed to receive message: {}", e).ok(); + exit(1); + } + }; + + // Attempt to write the message out as a string, but write out raw bytes if it turns out to not + // be UTF-8 encoded data. + match String::from_utf8(message.data.clone()) { + Ok(string) => println!("{}", string), + Err(_) => { + writeln!(io::stderr(), "Message not UTF-8 encoded!").ok(); + io::stdout().write(message.data.as_ref()).ok(); + } + }; +} + +fn run_send(queue_name: &str, content: &str) { + let name = Name::new(queue_name).expect("Invalid queue name"); + let queue = Queue::open(name).expect("Could not open queue"); + + let message = Message { + data: content.as_bytes().to_vec(), + priority: 0, + }; + + match queue.send(&message) { + Ok(_) => (), + Err(e) => { + writeln!(io::stderr(), "Could not send message: {}", e).ok(); + exit(1); + } + } +} + +fn run_rlimit() { + let mut rlimit = libc::rlimit { + rlim_cur: 0, + rlim_max: 0, + }; + + let mut errno = 0; + unsafe { + let res = libc::getrlimit(libc::RLIMIT_MSGQUEUE, &mut rlimit); + if res != 0 { + errno = nix::errno::errno(); + } + }; + + if errno != 0 { + writeln!(io::stderr(), "Could not get message queue rlimit: {}", errno).ok(); + } else { + println!("Message queue rlimit:"); + println!("Current limit: {}", rlimit.rlim_cur); + println!("Maximum limit: {}", rlimit.rlim_max); + } +} + +fn set_rlimit(new_limit: u64) { + let rlimit = libc::rlimit { + rlim_cur: new_limit, + rlim_max: new_limit, + }; + + let mut errno: i32 = 0; + unsafe { + let res = libc::setrlimit(libc::RLIMIT_MSGQUEUE, &rlimit); + if res != 0 { + errno = nix::errno::errno(); + } + } + + match errno { + 0 => println!("Set RLIMIT_MSGQUEUE hard limit to {}", new_limit), + _ => { + // Not mapping these error codes to messages for now, the user can + // look up the meaning in setrlimit(2). + panic!("Could not set hard limit: {}", errno); + } + }; +} + +fn main() { + let ls = SubCommand::with_name("ls").about("list message queues"); + + let queue_arg = Arg::with_name("queue").required(true).takes_value(true); + + let rlimit_arg = Arg::with_name("rlimit") + .help("RLIMIT_MSGQUEUE to set for this command") + .long("rlimit") + .takes_value(true); + + let inspect = SubCommand::with_name("inspect") + .about("inspect details about a queue") + .arg(&queue_arg); + + let create = SubCommand::with_name("create") + .about("Create a new queue") + .arg(&queue_arg) + .arg(&rlimit_arg) + .arg(Arg::with_name("max-size") + .help("maximum message size (in kB)") + .long("max-size") + .required(true) + .takes_value(true)) + .arg(Arg::with_name("max-pending") + .help("maximum # of pending messages") + .long("max-pending") + .required(true) + .takes_value(true)); + + let receive = SubCommand::with_name("receive") + .about("Receive a message from a queue") + .arg(&queue_arg); + + let send = SubCommand::with_name("send") + .about("Send a message to a queue") + .arg(&queue_arg) + .arg(Arg::with_name("message") + .help("the message to send") + .required(true)); + + let rlimit = SubCommand::with_name("rlimit") + .about("Get the message queue rlimit") + .setting(AppSettings::SubcommandRequiredElseHelp); + + let matches = App::new("mq") + .setting(AppSettings::SubcommandRequiredElseHelp) + .version("1.0.0") + .about("Administrate and inspect POSIX message queues") + .subcommand(ls) + .subcommand(inspect) + .subcommand(create) + .subcommand(receive) + .subcommand(send) + .subcommand(rlimit) + .get_matches(); + + match matches.subcommand() { + ("ls", _) => run_ls(), + ("inspect", Some(cmd)) => run_inspect(cmd.value_of("queue").unwrap()), + ("create", Some(cmd)) => run_create(cmd), + ("receive", Some(cmd)) => run_receive(cmd.value_of("queue").unwrap()), + ("send", Some(cmd)) => run_send( + cmd.value_of("queue").unwrap(), + cmd.value_of("message").unwrap() + ), + ("rlimit", _) => run_rlimit(), + _ => unimplemented!(), + } +} diff --git a/ops/nixos/.gitignore b/ops/nixos/.gitignore new file mode 100644 index 000000000000..773fa1667019 --- /dev/null +++ b/ops/nixos/.gitignore @@ -0,0 +1,3 @@ +hardware-configuration.nix +local-configuration.nix +result diff --git a/ops/nixos/README.md b/ops/nixos/README.md new file mode 100644 index 000000000000..9e88193dad7e --- /dev/null +++ b/ops/nixos/README.md @@ -0,0 +1,19 @@ +NixOS configuration +=================== + +My NixOS configuration! It configures most of the packages I require +on my systems, sets up Emacs the way I need and does a bunch of other +interesting things. + +System configuration lives in folders for each machine and a custom +fixed point evaluation (similar to standard NixOS module +configuration) is used to combine configuration together. + +Building `ops.nixos.rebuilder` yields a script that will automatically +build and activate the newest configuration based on the current +hostname. + +## Configured hosts: + +* `nugget` - desktop computer at home +* ~~`urdhva` - T470s~~ (currently with edef) diff --git a/ops/nixos/camden/default.nix b/ops/nixos/camden/default.nix new file mode 100644 index 000000000000..9713b148dfe8 --- /dev/null +++ b/ops/nixos/camden/default.nix @@ -0,0 +1,260 @@ +# This file configures camden.tazj.in, my homeserver. +{ depot, lib, ... }: + +config: let + nixpkgs = import depot.third_party.nixpkgsSrc { + config.allowUnfree = true; + }; +in lib.fix(self: { + imports = [ ../modules/tailscale.nix ]; + + # camden is intended to boot unattended, despite having an encrypted + # root partition. + # + # The below configuration uses an externally connected USB drive + # that contains a LUKS key file to unlock the disk automatically at + # boot. + # + # TODO(tazjin): Configure LUKS unlocking via SSH instead. + boot = { + initrd = { + availableKernelModules = [ + "ahci" "xhci_pci" "usbhid" "usb_storage" "sd_mod" "sdhci_pci" + "rtsx_usb_sdmmc" "r8169" + ]; + + kernelModules = [ "dm-snapshot" ]; + + luks.devices.camden-crypt = { + fallbackToPassword = true; + device = "/dev/disk/by-label/camden-crypt"; + keyFile = "/dev/sdb"; + keyFileSize = 4096; + }; + }; + + loader = { + systemd-boot.enable = true; + efi.canTouchEfiVariables = true; + }; + + cleanTmpDir = true; + }; + + fileSystems = { + "/" = { + device = "/dev/disk/by-label/camden-root"; + fsType = "ext4"; + }; + + "/home" = { + device = "/dev/disk/by-label/camden-home"; + fsType = "ext4"; + }; + + "/boot" = { + device = "/dev/disk/by-label/BOOT"; + fsType = "vfat"; + }; + }; + + nix = { + maxJobs = lib.mkDefault 4; + + nixPath = [ + "depot=/home/tazjin/depot" + "nixpkgs=${depot.third_party.nixpkgsSrc}" + ]; + + trustedUsers = [ "root" "tazjin" ]; + }; + nixpkgs.pkgs = nixpkgs; + + powerManagement.cpuFreqGovernor = lib.mkDefault "powersave"; + + networking = { + hostName = "camden"; + interfaces.enp1s0.useDHCP = true; + firewall.allowedTCPPorts = [ 22 8080 80 443 ]; + }; + + time.timeZone = "UTC"; + + # System-wide application setup + programs.fish.enable = true; + programs.mosh.enable = true; + + environment.systemPackages = + # programs from the depot + (with depot; [ + third_party.git + third_party.tailscale + third_party.pounce + ]) ++ + + # programs from nixpkgs + (with nixpkgs; [ + curl + direnv + emacs26-nox + gnupg + htop + jq + pass + pciutils + ]); + + users = { + # Set up my own user for logging in and doing things ... + users.tazjin = { + isNormalUser = true; + uid = 1000; + extraGroups = [ "git" "wheel" ]; + shell = nixpkgs.fish; + }; + + # Set up a user & group for general git shenanigans + groups.git = {}; + users.git = { + group = "git"; + isNormalUser = false; + }; + }; + + # Services setup + services.openssh.enable = true; + services.haveged.enable = true; + + # Join Tailscale into home network + services.tailscale = { + enable = true; + relayConf = "/etc/tailscale.conf"; + package = depot.third_party.tailscale; + aclFile = depot.nix.tailscale { + ACLs = [ + # Allow any traffic from myself + { + Action = "accept"; + Users = [ "mail@tazj.in" ]; + Ports = [ "*:*" ]; + } + ]; + } ; + }; + + # Run cgit for the depot. The onion here is nginx(thttpd(cgit)). + systemd.services.cgit = { + wantedBy = [ "multi-user.target" ]; + script = "${depot.web.cgit-taz}/bin/cgit-launch"; + + serviceConfig = { + Restart = "on-failure"; + User = "git"; + Group = "git"; + }; + }; + + # Provision a TLS certificate outside of nginx to avoid + # nixpkgs#38144 + security.acme.certs."tazj.in" = { + user = "nginx"; + group = "nginx"; + webroot = "/var/lib/acme/acme-challenge"; + extraDomains = { + "git.tazj.in" = null; + "www.tazj.in" = null; + + # Local domains (for this machine only) + "camden.tazj.in" = null; + "git.camden.tazj.in" = null; + }; + postRun = "systemctl reload nginx"; + }; + + # Forward logs to Google Cloud Platform + services.journaldriver = { + enable = true; + logStream = "home"; + googleCloudProject = "tazjins-infrastructure"; + applicationCredentials = "/etc/gcp/key.json"; + }; + + # serve my website + services.nginx = { + enable = true; + enableReload = true; + + recommendedTlsSettings = true; + recommendedGzipSettings = true; + recommendedProxySettings = true; + + commonHttpConfig = '' + log_format json_combined escape=json + '{' + '"remote_addr":"$remote_addr",' + '"method":"$request_method",' + '"uri":"$request_uri",' + '"status":$status,' + '"request_size":$request_length,' + '"response_size":$body_bytes_sent,' + '"response_time":$request_time,' + '"referrer":"$http_referer",' + '"user_agent":"$http_user_agent"' + '}'; + + access_log syslog:server=unix:/dev/log,nohostname json_combined; + ''; + + virtualHosts.homepage = { + serverName = "tazj.in"; + serverAliases = [ "camden.tazj.in" ]; + default = true; + useACMEHost = "tazj.in"; + root = depot.web.homepage; + addSSL = true; + + extraConfig = '' + ${depot.web.blog.oldRedirects} + + location ~* \.(webp|woff2)$ { + add_header Cache-Control "public, max-age=31536000"; + } + + location /blog/ { + alias ${depot.web.blog.rendered}/; + + if ($request_uri ~ ^/(.*)\.html$) { + return 302 /$1; + } + + try_files $uri $uri.html $uri/ =404; + } + + location /blobs/ { + alias /var/www/blobs/; + } + ''; + }; + + virtualHosts.cgit = { + serverName = "git.tazj.in"; + serverAliases = [ "git.camden.tazj.in" ]; + useACMEHost = "tazj.in"; + addSSL = true; + + extraConfig = '' + # Static assets must always hit the root. + location ~ ^/(favicon\.ico|cgit\.(css|png))$ { + proxy_pass http://localhost:2448; + } + + # Everything else hits the depot directly. + location / { + proxy_pass http://localhost:2448/cgit.cgi/depot/; + } + ''; + }; + }; + + system.stateVersion = "19.09"; +}) diff --git a/ops/nixos/default.nix b/ops/nixos/default.nix new file mode 100644 index 000000000000..040bfeb6e23e --- /dev/null +++ b/ops/nixos/default.nix @@ -0,0 +1,42 @@ +{ depot, lib, ... }: + +let + inherit (builtins) foldl'; + + systemFor = configs: (depot.third_party.nixos { + configuration = lib.fix(config: + foldl' lib.recursiveUpdate {} (map (c: c config) configs) + ); + }).system; + + rebuilder = depot.third_party.writeShellScriptBin "rebuilder" '' + set -ue + if [[ $EUID -ne 0 ]]; then + echo "Oh no! Only root is allowed to rebuild the system!" >&2 + exit 1 + fi + + case $HOSTNAME in + nugget) + echo "Rebuilding NixOS for //ops/nixos/nugget" + system=$(nix-build -E '(import <depot> {}).ops.nixos.nuggetSystem' --no-out-link) + ;; + camden) + echo "Rebuilding NixOS for //ops/nixos/camden" + system=$(nix-build -E '(import <depot> {}).ops.nixos.camdenSystem' --no-out-link) + ;; + *) + echo "$HOSTNAME is not a known NixOS host!" >&2 + exit 1 + ;; + esac + + nix-env -p /nix/var/nix/profiles/system --set $system + $system/bin/switch-to-configuration switch + ''; +in { + inherit rebuilder; + + nuggetSystem = systemFor [ depot.ops.nixos.nugget ]; + camdenSystem = systemFor [ depot.ops.nixos.camden ]; +} diff --git a/ops/nixos/dotfiles/config.fish b/ops/nixos/dotfiles/config.fish new file mode 100644 index 000000000000..de2c99ae6007 --- /dev/null +++ b/ops/nixos/dotfiles/config.fish @@ -0,0 +1,40 @@ +# Configure classic prompt +set fish_color_user --bold blue +set fish_color_cwd --bold white + +# Enable colour hints in VCS prompt: +set __fish_git_prompt_showcolorhints yes +set __fish_git_prompt_color_prefix purple +set __fish_git_prompt_color_suffix purple + +# Fish configuration +set fish_greeting "" +set PATH $HOME/.local/bin $HOME/.cargo/bin $PATH + +# Editor configuration +set -gx EDITOR "emacsclient" +set -gx ALTERNATE_EDITOR "emacs -q -nw" +set -gx VISUAL "emacsclient" + +# Miscellaneous +eval (direnv hook fish) + +# Useful command aliases +alias gpr 'git pull --rebase' +alias gco 'git checkout' +alias gf 'git fetch' +alias gap 'git add -p' +alias pbcopy 'xclip -selection clipboard' +alias edit 'emacsclient -n' +alias servedir 'nix-shell -p haskellPackages.wai-app-static --run warp' + +# Old habits die hard (also ls is just easier to type): +alias ls 'exa' + +# Fix up nix-env & friends for Nix 2.0 +export NIX_REMOTE=daemon + +# Fix display of fish in emacs' term-mode: +function fish_title + true +end diff --git a/ops/nixos/dotfiles/msmtprc b/ops/nixos/dotfiles/msmtprc new file mode 100644 index 000000000000..624b6a77fc4b --- /dev/null +++ b/ops/nixos/dotfiles/msmtprc @@ -0,0 +1,16 @@ +defaults + +port 587 +tls on +tls_trust_file /etc/ssl/certs/ca-certificates.crt + +# Runbox mail +account runbox +from mail@tazj.in +host mail.runbox.com +auth on +user mail@tazj.in +passwordeval pass show general/runbox-tazjin + +# Use Runbox as default +account default : runbox diff --git a/ops/nixos/dotfiles/notmuch-config b/ops/nixos/dotfiles/notmuch-config new file mode 100644 index 000000000000..a490774e635f --- /dev/null +++ b/ops/nixos/dotfiles/notmuch-config @@ -0,0 +1,21 @@ +# .notmuch-config - Configuration file for the notmuch mail system +# +# For more information about notmuch, see https://notmuchmail.org + +[database] +path=/home/vincent/mail + +[user] +name=Vincent Ambo +primary_email=mail@tazj.in +other_email=tazjin@gmail.com; + +[new] +tags=unread;inbox; +ignore= + +[search] +exclude_tags=deleted;spam;draft; + +[maildir] +synchronize_flags=true diff --git a/ops/nixos/dotfiles/offlineimaprc b/ops/nixos/dotfiles/offlineimaprc new file mode 100644 index 000000000000..78315447e4bd --- /dev/null +++ b/ops/nixos/dotfiles/offlineimaprc @@ -0,0 +1,39 @@ +[general] +accounts = tazjin, gmail + +[DEFAULT] +ssl = yes +sslcacertfile = /etc/ssl/certs/ca-certificates.crt + +# Private GMail account (old): +[Account gmail] +maxage = 90 +localrepository = gmail-local +remoterepository = gmail-remote +synclabels = yes + +[Repository gmail-local] +type = GmailMaildir +localfolders = ~/mail/gmail + +[Repository gmail-remote] +type = Gmail +remoteuser = tazjin@gmail.com +remotepassfile = ~/.config/mail/gmail-pass +folderfilter = lambda folder: folder == 'INBOX' + +# Main private account: +[Account tazjin] +localrepository = tazjin-local +remoterepository = tazjin-remote + +[Repository tazjin-local] +type = Maildir +localfolders = ~/mail/tazjin + +[Repository tazjin-remote] +type = IMAP +remotehost = mail.runbox.com +remoteuser = mail@tazj.in +remotepassfile = ~/.config/mail/tazjin-pass +auth_mechanisms = LOGIN diff --git a/ops/nixos/mail.nix b/ops/nixos/mail.nix new file mode 100644 index 000000000000..ba4ebfa06026 --- /dev/null +++ b/ops/nixos/mail.nix @@ -0,0 +1,77 @@ +# This file configures offlineimap, notmuch and MSMTP. +# +# Some manual configuration is required the first time this is +# applied: +# +# 1. Credential setup. +# 2. Linking of MSMTP config (ln -s /etc/msmtprc ~/.msmtprc) +# 3. Linking of notmuch config (ln -s /etc/notmuch-config ~/.notmuch-config) + +{ config, lib, pkgs, ... }: + +let offlineImapConfig = pkgs.writeText "offlineimaprc" + (builtins.readFile ./dotfiles/offlineimaprc); + +msmtpConfig = pkgs.writeText "msmtprc" + (builtins.readFile ./dotfiles/msmtprc); + +notmuchConfig = pkgs.writeText "notmuch-config" + (builtins.readFile ./dotfiles/notmuch-config); + +tagConfig = pkgs.writeText "notmuch-tags" '' + # Tag emacs-devel mailing list: + -inbox +emacs-devel -- to:emacs-devel@gnu.org OR cc:emacs-devel@gnu.org + + # Tag nix-devel mailing list & discourse: + -inbox +nix-devel -- to:nix-devel@googlegroups.com OR from:nixos1@discoursemail.com + + # Tag my own mail (from other devices) as sent: + -inbox +sent -- from:mail@tazj.in + + # Drafts are always read, duh. + -unread -- tag:draft +''; + +notmuchIndex = pkgs.writeShellScriptBin "notmuch-index" '' + echo "Indexing new mails in notmuch" + + # Index new mail + ${pkgs.notmuch}/bin/notmuch new + + # Apply tags + cat ${tagConfig} | ${pkgs.notmuch}/bin/notmuch tag --batch + + echo "Done indexing new mails" +''; +in { + # Enable OfflineIMAP timer & service: + systemd.user.timers.offlineimap = { + description = "OfflineIMAP timer"; + wantedBy = [ "timers.target" ]; + + timerConfig = { + Unit = "offlineimap.service"; + OnCalendar = "*:0/2"; # every 2 minutes + Persistent = "true"; # persist timer state after reboots + }; + }; + + systemd.user.services.offlineimap = { + description = "OfflineIMAP service"; + path = with pkgs; [ pass notmuch ]; + + serviceConfig = { + Type = "oneshot"; + ExecStart = "${pkgs.offlineimap}/bin/offlineimap -u syslog -o -c ${offlineImapConfig}"; + ExecStartPost = "${notmuchIndex}/bin/notmuch-index"; + TimeoutStartSec = "2min"; + }; + }; + + # Link configuration files to /etc/ (from where they will be linked + # further): + environment.etc = { + "msmtprc".source = msmtpConfig; + "notmuch-config".source = notmuchConfig; + }; +} diff --git a/ops/nixos/modules/.skip-subtree b/ops/nixos/modules/.skip-subtree new file mode 100644 index 000000000000..80d92f2eb485 --- /dev/null +++ b/ops/nixos/modules/.skip-subtree @@ -0,0 +1 @@ +The files in this folder are NixOS modules, not readTree-importables. diff --git a/ops/nixos/modules/tailscale.nix b/ops/nixos/modules/tailscale.nix new file mode 100644 index 000000000000..8f08ec95bdfc --- /dev/null +++ b/ops/nixos/modules/tailscale.nix @@ -0,0 +1,77 @@ +# NixOS module for Tailscale +{ config, lib, pkgs, ... }: + +with lib; + +let + cfg = config.services.tailscale; + + aclVar = optionalAttrs (cfg.aclFile != null) { + ACL_FILE = "--acl-file=${cfg.aclFile}"; + }; + +in { + options.services.tailscale = { + enable = mkEnableOption "Tailscale relay"; + + package = mkOption { + type = types.package; + default = pkgs.tailscale; # <- this doesn't actually exist yet + description = "Tailscale client package to use"; + }; + + port = mkOption { + type = types.int; + default = 41641; + description = '' + Set the port to listen on for incoming VPN packets. + + Remote nodes will automatically be informed about the new port + number, but you might want to configure this in order to set + external firewall settings. + ''; + }; + + aclFile = mkOption { + type = with types; nullOr path; + default = "${cfg.package}/etc/acl.json"; + }; + + relayConf = mkOption { + type = types.path; + example = "/etc/tailscale.conf"; + description = "The path to relay.conf"; + }; + + extraFlags = mkOption { + type = with types; listOf str; + default = []; + description = "Extra flags you might want to pass to relaynode."; + }; + }; + + config = mkIf cfg.enable { + environment.systemPackages = [ cfg.package ]; + + systemd.services.tailscale-relay = { + description = "Traffic relay node for Tailscale IPN"; + after = [ "network.target" ]; + wantedBy = [ "multi-user.target" ]; + path = with pkgs; [ iproute iptables ]; + + unitConfig.ConditionPathExists = cfg.relayConf; + + script = concatStringsSep " " ([ + "${cfg.package}/bin/relaynode" + "--port=${toString cfg.port}" + "--config=${cfg.relayConf}" + (optionalString (cfg.aclFile != null) "--acl-file=${cfg.aclFile}") + ] ++ cfg.extraFlags); + + serviceConfig = { + RuntimeDirectory = "tailscale"; + LogsDirectory = "tailscale"; + }; + }; + }; +} diff --git a/ops/nixos/nugget/default.nix b/ops/nixos/nugget/default.nix new file mode 100644 index 000000000000..f869c9fb69c6 --- /dev/null +++ b/ops/nixos/nugget/default.nix @@ -0,0 +1,257 @@ +# This file configures nugget, my home desktop machine. +{ depot, lib, ... }: + +config: let + nixpkgs = import depot.third_party.nixpkgsSrc { + config.allowUnfree = true; + }; + + lieer = (depot.third_party.lieer {}); +in depot.lib.fix(self: { + imports = [ + ../modules/tailscale.nix + ]; + + hardware = { + pulseaudio.enable = true; + cpu.intel.updateMicrocode = true; + u2f.enable = true; + }; + + boot = { + cleanTmpDir = true; + kernelModules = [ "kvm-intel" ]; + + loader = { + timeout = 3; + systemd-boot.enable = true; + efi.canTouchEfiVariables = false; + }; + + initrd = { + luks.devices.nugget-crypt.device = "/dev/disk/by-label/nugget-crypt"; + availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usb_storage" "usbhid" "sd_mod" ]; + kernelModules = [ "dm-snapshot" ]; + }; + }; + + nix = { + nixPath = [ + "depot=/home/tazjin/depot" + "nixpkgs=${depot.third_party.nixpkgsSrc}" + ]; + }; + + nixpkgs.pkgs = nixpkgs; + + networking = { + hostName = "nugget"; + useDHCP = false; + interfaces.eno1.useDHCP = true; + interfaces.wlp7s0.useDHCP = true; + + # Don't use ISP's DNS servers: + nameservers = [ + "8.8.8.8" + "8.8.4.4" + ]; + + # Open Chromecast-related ports & servedir + firewall.enable = false; + firewall.allowedTCPPorts = [ 4242 5556 5558 ]; + + # Connect to the WiFi to let the Chromecast work. + wireless.enable = true; + wireless.networks = { + "How do I computer?" = { + psk = "washyourface"; + }; + }; + + # The current home router can't forward ports on the local + # network, but I'd like to test if camden is serving the correct + # certificates. + extraHosts = '' + 192.168.1.205 camden git.tazj.in tazj.in camden.tazj.in git.camden.tazj.in + ''; + }; + + # Generate an immutable /etc/resolv.conf from the nameserver settings + # above (otherwise DHCP overwrites it): + environment.etc."resolv.conf" = with lib; { + source = depot.third_party.writeText "resolv.conf" '' + ${concatStringsSep "\n" (map (ns: "nameserver ${ns}") self.networking.nameservers)} + options edns0 + ''; + }; + + time.timeZone = "Europe/London"; + + environment.systemPackages = + # programs from the depot + (with depot; [ + lieer + ops.kontemplate + third_party.git + third_party.guile + third_party.tailscale + tools.emacs + ]) ++ + + # programs from nixpkgs + (with nixpkgs; [ + age + bat + cachix + chromium + curl + direnv + dnsutils + exa + fd + gnupg + go + google-chrome + google-cloud-sdk + htop + i3lock + imagemagick + jq + keybase-gui + kubectl + miller + msmtp + nix-prefetch-github + notmuch + openssh + openssl + pass + pavucontrol + pinentry + pinentry-emacs + pwgen + ripgrep + rustup + sbcl + scrot + spotify + tokei + tree + unzip + vlc + xclip + yubico-piv-tool + yubikey-personalization + ]); + + fileSystems = { + "/".device = "/dev/disk/by-label/nugget-root"; + "/boot".device = "/dev/disk/by-label/EFI"; + "/home".device = "/dev/disk/by-label/nugget-home"; + }; + + # Configure user account + users.extraUsers.tazjin = { + extraGroups = [ "wheel" "audio" ]; + isNormalUser = true; + uid = 1000; + shell = nixpkgs.fish; + }; + + security.sudo = { + enable = true; + extraConfig = "wheel ALL=(ALL:ALL) SETENV: ALL"; + }; + + fonts = { + fonts = with nixpkgs; [ + corefonts + dejavu_fonts + jetbrains-mono + noto-fonts-cjk + noto-fonts-emoji + ]; + + fontconfig = { + hinting.enable = true; + subpixel.lcdfilter = "light"; + + defaultFonts = { + monospace = [ "JetBrains Mono" ]; + }; + }; + }; + + # Configure location (Vauxhall, London) for services that need it. + location = { + latitude = 51.4819109; + longitude = -0.1252998; + }; + + programs.fish.enable = true; + + services.redshift.enable = true; + services.openssh.enable = true; + services.keybase.enable = true; + + # Required for Yubikey usage as smartcard + services.pcscd.enable = true; + services.udev.packages = [ + nixpkgs.yubikey-personalization + ]; + + services.xserver = { + enable = true; + layout = "us"; + xkbOptions = "caps:super"; + exportConfiguration = true; + videoDrivers = [ "nvidia" ]; + + displayManager = { + # Give EXWM permission to control the session. + sessionCommands = "${nixpkgs.xorg.xhost}/bin/xhost +SI:localuser:$USER"; + + lightdm.enable = true; + lightdm.greeters.gtk.clock-format = "%H·%M"; + }; + + windowManager.session = lib.singleton { + name = "exwm"; + start = "${depot.tools.emacs}/bin/tazjins-emacs"; + }; + }; + + # Do not restart the display manager automatically + systemd.services.display-manager.restartIfChanged = lib.mkForce false; + + # Configure email setup + systemd.user.services.lieer-tazjin = { + description = "Synchronise mail@tazj.in via lieer"; + script = "${lieer}/bin/gmi sync"; + + serviceConfig = { + WorkingDirectory = "%h/mail/account.tazjin"; + Type = "oneshot"; + }; + }; + + systemd.user.timers.lieer-tazjin = { + wantedBy = [ "timers.target" ]; + + timerConfig = { + OnActiveSec = "1"; + OnUnitActiveSec = "180"; + }; + }; + + # Use Tailscale \o/ + services.tailscale = { + enable = true; + relayConf = "/etc/tailscale/relay.conf"; + aclFile = null; # allow all traffic for testing + package = depot.third_party.tailscale; + }; + + # ... and other nonsense. + system.stateVersion = "19.09"; +}) diff --git a/ops/posix_mq.rs/.gitignore b/ops/posix_mq.rs/.gitignore new file mode 100644 index 000000000000..e5b6fdb28e32 --- /dev/null +++ b/ops/posix_mq.rs/.gitignore @@ -0,0 +1,3 @@ +/target/ +**/*.rs.bk +.idea/ diff --git a/ops/posix_mq.rs/CODE_OF_CONDUCT.md b/ops/posix_mq.rs/CODE_OF_CONDUCT.md new file mode 100644 index 000000000000..c4013ac13ebc --- /dev/null +++ b/ops/posix_mq.rs/CODE_OF_CONDUCT.md @@ -0,0 +1,20 @@ +A SERMON ON ETHICS AND LOVE +=========================== + +One day Mal-2 asked the messenger spirit Saint Gulik to approach the Goddess and request Her presence for some desperate advice. Shortly afterwards the radio came on by itself, and an ethereal female Voice said **YES?** + +"O! Eris! Blessed Mother of Man! Queen of Chaos! Daughter of Discord! Concubine of Confusion! O! Exquisite Lady, I beseech You to lift a heavy burden from my heart!" + +**WHAT BOTHERS YOU, MAL? YOU DON'T SOUND WELL.** + +"I am filled with fear and tormented with terrible visions of pain. Everywhere people are hurting one another, the planet is rampant with injustices, whole societies plunder groups of their own people, mothers imprison sons, children perish while brothers war. O, woe." + +**WHAT IS THE MATTER WITH THAT, IF IT IS WHAT YOU WANT TO DO?** + +"But nobody Wants it! Everybody hates it." + +**OH. WELL, THEN *STOP*.** + +At which moment She turned herself into an aspirin commercial and left The Polyfather stranded alone with his species. + +SINISTER DEXTER HAS A BROKEN SPIROMETER. diff --git a/ops/posix_mq.rs/Cargo.lock b/ops/posix_mq.rs/Cargo.lock new file mode 100644 index 000000000000..fdd0086c4dd3 --- /dev/null +++ b/ops/posix_mq.rs/Cargo.lock @@ -0,0 +1,54 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +[[package]] +name = "bitflags" +version = "1.2.1" +source = "registry+https://github.com/rust-lang/crates.io-index" + +[[package]] +name = "cc" +version = "1.0.50" +source = "registry+https://github.com/rust-lang/crates.io-index" + +[[package]] +name = "cfg-if" +version = "0.1.10" +source = "registry+https://github.com/rust-lang/crates.io-index" + +[[package]] +name = "libc" +version = "0.2.66" +source = "registry+https://github.com/rust-lang/crates.io-index" + +[[package]] +name = "nix" +version = "0.16.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +dependencies = [ + "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)", + "cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)", + "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)", + "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)", + "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)", +] + +[[package]] +name = "posix_mq" +version = "0.9.0" +dependencies = [ + "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)", + "nix 0.16.1 (registry+https://github.com/rust-lang/crates.io-index)", +] + +[[package]] +name = "void" +version = "1.0.2" +source = "registry+https://github.com/rust-lang/crates.io-index" + +[metadata] +"checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693" +"checksum cc 1.0.50 (registry+https://github.com/rust-lang/crates.io-index)" = "95e28fa049fda1c330bcf9d723be7663a899c4679724b34c81e9f5a326aab8cd" +"checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822" +"checksum libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)" = "d515b1f41455adea1313a4a2ac8a8a477634fbae63cc6100e3aebb207ce61558" +"checksum nix 0.16.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dd0eaf8df8bab402257e0a5c17a254e4cc1f72a93588a1ddfb5d356c801aa7cb" +"checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d" diff --git a/ops/posix_mq.rs/Cargo.toml b/ops/posix_mq.rs/Cargo.toml new file mode 100644 index 000000000000..d72e87a3dcef --- /dev/null +++ b/ops/posix_mq.rs/Cargo.toml @@ -0,0 +1,11 @@ +[package] +name = "posix_mq" +version = "0.9.0" +authors = ["Vincent Ambo <mail@tazj.in>"] +description = "(Higher-level) Rust bindings to POSIX message queues" +license = "MIT" +repository = "https://git.tazj.in/tree/ops/posix_mq.rs" + +[dependencies] +nix = "0.16" +libc = "0.2" diff --git a/ops/posix_mq.rs/LICENSE b/ops/posix_mq.rs/LICENSE new file mode 100644 index 000000000000..2389546b1383 --- /dev/null +++ b/ops/posix_mq.rs/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2017-2020 Vincent Ambo + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/ops/posix_mq.rs/README.md b/ops/posix_mq.rs/README.md new file mode 100644 index 000000000000..9370c6c08740 --- /dev/null +++ b/ops/posix_mq.rs/README.md @@ -0,0 +1,33 @@ +posix_mq +======== + +[](https://travis-ci.org/aprilabank/posix_mq.rs) +[](https://crates.io/crates/posix_mq) + +This is a simple, relatively high-level library for the POSIX [message queue API][]. It wraps the lower-level API in a +simpler interface with more robust error handling. + +Check out this project's [sister library][] in Kotlin. + +Usage example: + +```rust +// Values that need to undergo validation are wrapped in safe types: +let name = Name::new("/test-queue").unwrap(); + +// Queue creation with system defaults is simple: +let queue = Queue::open_or_create(name).expect("Opening queue failed"); + +// Sending a message: +let message = Message { + data: "test-message".as_bytes().to_vec(), + priority: 0, +}; +queue.send(&message).expect("message sending failed"); + +// ... and receiving it! +let result = queue.receive().expect("message receiving failed"); +``` + +[message queue API]: https://linux.die.net/man/7/mq_overview +[sister library]: https://github.com/aprilabank/posix_mq.kt diff --git a/ops/posix_mq.rs/default.nix b/ops/posix_mq.rs/default.nix new file mode 100644 index 000000000000..6b0e32009a66 --- /dev/null +++ b/ops/posix_mq.rs/default.nix @@ -0,0 +1,3 @@ +{ depot, ... }: + +depot.third_party.naersk.buildPackage ./. diff --git a/ops/posix_mq.rs/src/error.rs b/ops/posix_mq.rs/src/error.rs new file mode 100644 index 000000000000..1ef585c01efb --- /dev/null +++ b/ops/posix_mq.rs/src/error.rs @@ -0,0 +1,130 @@ +use nix; +use std::error; +use std::fmt; +use std::io; +use std::num; + +/// This module implements a simple error type to match the errors that can be thrown from the C +/// functions as well as some extra errors resulting from internal validations. +/// +/// As this crate exposes an opinionated API to the POSIX queues certain errors have been +/// ignored: +/// +/// * ETIMEDOUT: The low-level timed functions are not exported and this error can not occur. +/// * EAGAIN: Non-blocking queue calls are not supported. +/// * EINVAL: Same reason as ETIMEDOUT +/// * EMSGSIZE: The message size is immutable after queue creation and this crate checks it. +/// * ENAMETOOLONG: This crate performs name validation +/// +/// If an unexpected error is encountered it will be wrapped appropriately and should be reported +/// as a bug on https://github.com/aprilabank/posix_mq.rs + +#[derive(Debug)] +pub enum Error { + // These errors are raised inside of the library + InvalidQueueName(&'static str), + ValueReadingError(io::Error), + MessageSizeExceeded(), + MaximumMessageSizeExceeded(), + MaximumMessageCountExceeded(), + + // These errors match what is described in the man pages (from mq_overview(7) onwards). + PermissionDenied(), + InvalidQueueDescriptor(), + QueueCallInterrupted(), + QueueAlreadyExists(), + QueueNotFound(), + InsufficientMemory(), + InsufficientSpace(), + + // These two are (hopefully) unlikely in modern systems + ProcessFileDescriptorLimitReached(), + SystemFileDescriptorLimitReached(), + + // If an unhandled / unknown / unexpected error occurs this error will be used. + // In those cases bug reports would be welcome! + UnknownForeignError(nix::errno::Errno), + + // Some other unexpected / unknown error occured. This is probably an error from + // the nix crate. Bug reports also welcome for this! + UnknownInternalError(Option<nix::Error>), +} + +impl error::Error for Error { + fn description(&self) -> &str { + use Error::*; + match *self { + // This error contains more sensible description strings already + InvalidQueueName(e) => e, + ValueReadingError(_) => "error reading system configuration for message queues", + MessageSizeExceeded() => "message is larger than maximum size for specified queue", + MaximumMessageSizeExceeded() => "specified queue message size exceeds system maximum", + MaximumMessageCountExceeded() => "specified queue message count exceeds system maximum", + PermissionDenied() => "permission to the specified queue was denied", + InvalidQueueDescriptor() => "the internal queue descriptor was invalid", + QueueCallInterrupted() => "queue method interrupted by signal", + QueueAlreadyExists() => "the specified queue already exists", + QueueNotFound() => "the specified queue could not be found", + InsufficientMemory() => "insufficient memory to call queue method", + InsufficientSpace() => "insufficient space to call queue method", + ProcessFileDescriptorLimitReached() => + "maximum number of process file descriptors reached", + SystemFileDescriptorLimitReached() => + "maximum number of system file descriptors reached", + UnknownForeignError(_) => "unknown foreign error occured: please report a bug!", + UnknownInternalError(_) => "unknown internal error occured: please report a bug!", + } + } +} + +impl fmt::Display for Error { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + // Explicitly import this to gain access to Error::description() + use std::error::Error; + f.write_str(self.description()) + } +} + +/// This from implementation is used to translate errors from the lower-level +/// C-calls into sensible Rust errors. +impl From<nix::Error> for Error { + fn from(e: nix::Error) -> Self { + match e { + nix::Error::Sys(e) => match_errno(e), + _ => Error::UnknownInternalError(Some(e)), + } + } +} + +// This implementation is used when reading system queue settings. +impl From<io::Error> for Error { + fn from(e: io::Error) -> Self { + Error::ValueReadingError(e) + } +} + +// This implementation is used when parsing system queue settings. The unknown error is returned +// here because the system is probably seriously broken if those files don't contain numbers. +impl From<num::ParseIntError> for Error { + fn from(_: num::ParseIntError) -> Self { + Error::UnknownInternalError(None) + } +} + + +fn match_errno(err: nix::errno::Errno) -> Error { + use nix::errno::Errno::*; + + match err { + EACCES => Error::PermissionDenied(), + EBADF => Error::InvalidQueueDescriptor(), + EINTR => Error::QueueCallInterrupted(), + EEXIST => Error::QueueAlreadyExists(), + EMFILE => Error::ProcessFileDescriptorLimitReached(), + ENFILE => Error::SystemFileDescriptorLimitReached(), + ENOENT => Error::QueueNotFound(), + ENOMEM => Error::InsufficientMemory(), + ENOSPC => Error::InsufficientSpace(), + _ => Error::UnknownForeignError(err), + } +} diff --git a/ops/posix_mq.rs/src/lib.rs b/ops/posix_mq.rs/src/lib.rs new file mode 100644 index 000000000000..057601eccfbd --- /dev/null +++ b/ops/posix_mq.rs/src/lib.rs @@ -0,0 +1,269 @@ +extern crate nix; +extern crate libc; + +use error::Error; +use libc::mqd_t; +use nix::mqueue; +use nix::sys::stat; +use std::ffi::CString; +use std::fs::File; +use std::io::Read; +use std::string::ToString; +use std::ops::Drop; + +pub mod error; + +#[cfg(test)] +mod tests; + +/// Wrapper type for queue names that performs basic validation of queue names before calling +/// out to C code. +#[derive(Debug, Clone, PartialEq)] +pub struct Name(CString); + +impl Name { + pub fn new<S: ToString>(s: S) -> Result<Self, Error> { + let string = s.to_string(); + + if !string.starts_with('/') { + return Err(Error::InvalidQueueName("Queue name must start with '/'")); + } + + // The C library has a special error return for this case, so I assume people must actually + // have tried just using '/' as a queue name. + if string.len() == 1 { + return Err(Error::InvalidQueueName( + "Queue name must be a slash followed by one or more characters" + )); + } + + if string.len() > 255 { + return Err(Error::InvalidQueueName("Queue name must not exceed 255 characters")); + } + + if string.matches('/').count() > 1 { + return Err(Error::InvalidQueueName("Queue name can not contain more than one slash")); + } + + // TODO: What error is being thrown away here? Is it possible? + Ok(Name(CString::new(string).unwrap())) + } +} + +#[derive(Debug, Clone, PartialEq)] +pub struct Message { + pub data: Vec<u8>, + pub priority: u32, +} + +/// Represents an open queue descriptor to a POSIX message queue. This carries information +/// about the queue's limitations (i.e. maximum message size and maximum message count). +#[derive(Debug)] +pub struct Queue { + name: Name, + + /// Internal file/queue descriptor. + queue_descriptor: mqd_t, + + /// Maximum number of pending messages in this queue. + max_pending: i64, + + /// Maximum size of this queue. + max_size: usize, +} + +impl Queue { + /// Creates a new queue and fails if it already exists. + /// By default the queue will be read/writable by the current user with no access for other + /// users. + /// Linux users can change this setting themselves by modifying the queue file in /dev/mqueue. + pub fn create(name: Name, max_pending: i64, max_size: i64) -> Result<Queue, Error> { + if max_pending > read_i64_from_file(MSG_MAX)? { + return Err(Error::MaximumMessageCountExceeded()); + } + + if max_size > read_i64_from_file(MSGSIZE_MAX)? { + return Err(Error::MaximumMessageSizeExceeded()); + } + + let oflags = { + let mut flags = mqueue::MQ_OFlag::empty(); + // Put queue in r/w mode + flags.toggle(mqueue::MQ_OFlag::O_RDWR); + // Enable queue creation + flags.toggle(mqueue::MQ_OFlag::O_CREAT); + // Fail if queue exists already + flags.toggle(mqueue::MQ_OFlag::O_EXCL); + flags + }; + + let attr = mqueue::MqAttr::new( + 0, max_pending, max_size, 0 + ); + + let queue_descriptor = mqueue::mq_open( + &name.0, + oflags, + default_mode(), + Some(&attr), + )?; + + Ok(Queue { + name, + queue_descriptor, + max_pending, + max_size: max_size as usize, + }) + } + + /// Opens an existing queue. + pub fn open(name: Name) -> Result<Queue, Error> { + // No extra flags need to be constructed as the default is to open and fail if the + // queue does not exist yet - which is what we want here. + let oflags = mqueue::MQ_OFlag::O_RDWR; + let queue_descriptor = mqueue::mq_open( + &name.0, + oflags, + default_mode(), + None, + )?; + + let attr = mq_getattr(queue_descriptor)?; + + Ok(Queue { + name, + queue_descriptor, + max_pending: attr.mq_maxmsg, + max_size: attr.mq_msgsize as usize, + }) + } + + /// Opens an existing queue or creates a new queue with the OS default settings. + pub fn open_or_create(name: Name) -> Result<Queue, Error> { + let oflags = { + let mut flags = mqueue::MQ_OFlag::empty(); + // Put queue in r/w mode + flags.toggle(mqueue::MQ_OFlag::O_RDWR); + // Enable queue creation + flags.toggle(mqueue::MQ_OFlag::O_CREAT); + flags + }; + + let default_pending = read_i64_from_file(MSG_DEFAULT)?; + let default_size = read_i64_from_file(MSGSIZE_DEFAULT)?; + let attr = mqueue::MqAttr::new( + 0, default_pending, default_size, 0 + ); + + let queue_descriptor = mqueue::mq_open( + &name.0, + oflags, + default_mode(), + Some(&attr), + )?; + + let actual_attr = mq_getattr(queue_descriptor)?; + + Ok(Queue { + name, + queue_descriptor, + max_pending: actual_attr.mq_maxmsg, + max_size: actual_attr.mq_msgsize as usize, + }) + } + + /// Delete a message queue from the system. This method will make the queue unavailable for + /// other processes after their current queue descriptors have been closed. + pub fn delete(self) -> Result<(), Error> { + mqueue::mq_unlink(&self.name.0)?; + drop(self); + Ok(()) + } + + /// Send a message to the message queue. + /// If the queue is full this call will block until a message has been consumed. + pub fn send(&self, msg: &Message) -> Result<(), Error> { + if msg.data.len() > self.max_size as usize { + return Err(Error::MessageSizeExceeded()); + } + + mqueue::mq_send( + self.queue_descriptor, + msg.data.as_ref(), + msg.priority, + ).map_err(|e| e.into()) + } + + /// Receive a message from the message queue. + /// If the queue is empty this call will block until a message arrives. + pub fn receive(&self) -> Result<Message, Error> { + let mut data: Vec<u8> = vec![0; self.max_size as usize]; + let mut priority: u32 = 0; + + let msg_size = mqueue::mq_receive( + self.queue_descriptor, + data.as_mut(), + &mut priority, + )?; + + data.truncate(msg_size); + Ok(Message { data, priority }) + } + + pub fn max_pending(&self) -> i64 { + self.max_pending + } + + pub fn max_size(&self) -> usize { + self.max_size + } +} + +impl Drop for Queue { + fn drop(&mut self) { + // Attempt to close the queue descriptor and discard any possible errors. + // The only error thrown in the C-code is EINVAL, which would mean that the + // descriptor has already been closed. + mqueue::mq_close(self.queue_descriptor).ok(); + } +} + +// Creates the default queue mode (0600). +fn default_mode() -> stat::Mode { + let mut mode = stat::Mode::empty(); + mode.toggle(stat::Mode::S_IRUSR); + mode.toggle(stat::Mode::S_IWUSR); + mode +} + +/// This file defines the default number of maximum pending messages in a queue. +const MSG_DEFAULT: &'static str = "/proc/sys/fs/mqueue/msg_default"; + +/// This file defines the system maximum number of pending messages in a queue. +const MSG_MAX: &'static str = "/proc/sys/fs/mqueue/msg_max"; + +/// This file defines the default maximum size of messages in a queue. +const MSGSIZE_DEFAULT: &'static str = "/proc/sys/fs/mqueue/msgsize_default"; + +/// This file defines the system maximum size for messages in a queue. +const MSGSIZE_MAX: &'static str = "/proc/sys/fs/mqueue/msgsize_max"; + +/// This method is used in combination with the above constants to find system limits. +fn read_i64_from_file(name: &str) -> Result<i64, Error> { + let mut file = File::open(name.to_string())?; + let mut content = String::new(); + file.read_to_string(&mut content)?; + Ok(content.trim().parse()?) +} + +/// The mq_getattr implementation in the nix crate hides the maximum message size and count, which +/// is very impractical. +/// To work around it, this method calls the C-function directly. +fn mq_getattr(mqd: mqd_t) -> Result<libc::mq_attr, Error> { + use std::mem; + let mut attr = unsafe { mem::uninitialized::<libc::mq_attr>() }; + let res = unsafe { libc::mq_getattr(mqd, &mut attr) }; + nix::errno::Errno::result(res) + .map(|_| attr) + .map_err(|e| e.into()) +} diff --git a/ops/posix_mq.rs/src/tests.rs b/ops/posix_mq.rs/src/tests.rs new file mode 100644 index 000000000000..7a08876aeacd --- /dev/null +++ b/ops/posix_mq.rs/src/tests.rs @@ -0,0 +1,22 @@ +use super::*; + +#[test] +fn test_open_delete() { + // Simple test with default queue settings + let name = Name::new("/test-queue").unwrap(); + let queue = Queue::open_or_create(name) + .expect("Opening queue failed"); + + let message = Message { + data: "test-message".as_bytes().to_vec(), + priority: 0, + }; + + queue.send(&message).expect("message sending failed"); + + let result = queue.receive().expect("message receiving failed"); + + assert_eq!(message, result); + + queue.delete().expect("deleting queue failed"); +} diff --git a/ops/secrets/.skip-subtree b/ops/secrets/.skip-subtree new file mode 100644 index 000000000000..25dba2a344f4 --- /dev/null +++ b/ops/secrets/.skip-subtree @@ -0,0 +1 @@ +No Nix derivations under //ops/secrets diff --git a/ops/secrets/gcsr-tazjin-password b/ops/secrets/gcsr-tazjin-password new file mode 100644 index 000000000000..5893de131560 --- /dev/null +++ b/ops/secrets/gcsr-tazjin-password Binary files differdiff --git a/ops/secrets/gmaps-api-key b/ops/secrets/gmaps-api-key new file mode 100644 index 000000000000..6a4522646081 --- /dev/null +++ b/ops/secrets/gmaps-api-key Binary files differdiff --git a/ops/secrets/nixery-gcs-json b/ops/secrets/nixery-gcs-json new file mode 100644 index 000000000000..b8b544511685 --- /dev/null +++ b/ops/secrets/nixery-gcs-json Binary files differdiff --git a/ops/secrets/nixery-gcs-pem b/ops/secrets/nixery-gcs-pem new file mode 100644 index 000000000000..798a1e5a66f8 --- /dev/null +++ b/ops/secrets/nixery-gcs-pem Binary files differdiff --git a/ops/secrets/nixery-ssh-private b/ops/secrets/nixery-ssh-private new file mode 100644 index 000000000000..5c4ff2023350 --- /dev/null +++ b/ops/secrets/nixery-ssh-private Binary files differdiff --git a/ops/secrets/sr.ht-token b/ops/secrets/sr.ht-token new file mode 100644 index 000000000000..53eb0d16b0e1 --- /dev/null +++ b/ops/secrets/sr.ht-token Binary files differ |