about summary refs log tree commit diff
path: root/ops/modules/monorepo-gerrit.nix
blob: 67be5410dcbb356bed7fb545f64f3a7c8d1ec455 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
# Gerrit configuration for the TVL monorepo
{ depot, pkgs, config, lib, ... }:

let
  cfg = config.services.gerrit;

  besadiiWithConfig = name: pkgs.writeShellScript "besadii-whitby" ''
    export BESADII_CONFIG=/run/agenix/gerrit-besadii-config
    exec -a ${name} ${depot.ops.besadii}/bin/besadii "$@"
  '';

  gerritHooks = pkgs.runCommandNoCC "gerrit-hooks" { } ''
    mkdir -p $out
    ln -s ${besadiiWithConfig "change-merged"} $out/change-merged
    ln -s ${besadiiWithConfig "patchset-created"} $out/patchset-created
  '';
in
{
  services.gerrit = {
    enable = true;
    listenAddress = "[::]:4778"; # 4778 - grrt
    serverId = "4fdfa107-4df9-4596-8e0a-1d2bbdd96e36";

    builtinPlugins = [
      "download-commands"
      "hooks"
      "replication"
    ];

    plugins = with depot.third_party.gerrit_plugins; [
      owners
      oauth
      depot.ops.gerrit-tvl
    ];

    package = depot.third_party.gerrit;

    jvmHeapLimit = "4g";

    # In some NixOS channel bump, the default version of OpenJDK has
    # changed to one that is incompatible with our current version of
    # Gerrit.
    #
    # TODO(tazjin): Update Gerrit and remove this when possible.
    jvmPackage = pkgs.openjdk11_headless;

    settings = {
      core.packedGitLimit = "100m";
      log.jsonLogging = true;
      log.textLogging = false;
      sshd.advertisedAddress = "code.tvl.fyi:29418";
      hooks.path = "${gerritHooks}";
      cache.web_sessions.maxAge = "3 months";
      plugins.allowRemoteAdmin = false;
      change.enableAttentionSet = true;
      change.enableAssignee = false;

      # Configures gerrit for being reverse-proxied by nginx as per
      # https://gerrit-review.googlesource.com/Documentation/config-reverseproxy.html
      gerrit = {
        canonicalWebUrl = "https://cl.tvl.fyi";
        docUrl = "/Documentation";
      };

      httpd.listenUrl = "proxy-https://${cfg.listenAddress}";

      download.command = [
        "checkout"
        "cherry_pick"
        "format_patch"
        "pull"
      ];

      # Configure for cgit.
      gitweb = {
        type = "custom";
        url = "https://code.tvl.fyi";
        project = "/";
        revision = "/commit/?id=\${commit}";
        branch = "/log/?h=\${branch}";
        tag = "/tag/?h=\${tag}";
        roottree = "/tree/?h=\${commit}";
        file = "/tree/\${file}?h=\${commit}";
        filehistory = "/log/\${file}?h=\${branch}";
        linkname = "cgit";
      };

      # Auto-link panettone bug links
      commentlink.panettone = {
        match = "b/(\\\\d+)";
        html = "<a href=\"https://b.tvl.fyi/issues/$1\">b/$1</a>";
      };

      # Auto-link other CLs
      commentlink.gerrit = {
        match = "cl/(\\\\d+)";
        html = "<a href=\"https://cl.tvl.fyi/$1\">cl/$1</a>";
      };

      # Configures integration with Keycloak, which then integrates with a
      # variety of backends.
      auth.type = "OAUTH";
      plugin.gerrit-oauth-provider-keycloak-oauth = {
        root-url = "https://auth.tvl.fyi";
        realm = "TVL";
        client-id = "gerrit";
        # client-secret is set in /var/lib/gerrit/etc/secure.config.
      };

      # Allow users to add additional email addresses to their accounts.
      oauth.allowRegisterNewEmail = true;

      # Use Gerrit's built-in HTTP passwords, rather than trying to use the
      # password against the backing OAuth provider.
      auth.gitBasicAuthPolicy = "HTTP";

      # Email sending (emails are relayed via the tazj.in domain's
      # GSuite currently).
      #
      # Note that sendemail.smtpPass is stored in
      # $site_path/etc/secure.config and is *not* controlled by Nix.
      #
      # Receiving email is not currently supported.
      sendemail = {
        enable = true;
        html = false;
        connectTimeout = "10sec";
        from = "TVL Code Review <tvlbot@tazj.in>";
        includeDiff = true;
        smtpEncryption = "none";
        smtpServer = "localhost";
        smtpServerPort = 2525;
      };
    };

    # Replication of the depot repository to secondary machines, for
    # serving cgit/josh.
    replicationSettings = {
      gerrit.replicateOnStartup = true;

      remote.sanduny = {
        url = "depot@sanduny.tvl.su:/var/lib/depot";
        projects = "depot";
      };
    };
  };

  systemd.services.gerrit = {
    serviceConfig = {
      # There seems to be no easy way to get `DynamicUser` to play
      # well with other services (e.g. by using SupplementaryGroups,
      # which seem to have no effect) so we force the DynamicUser
      # setting for the Gerrit service to be disabled and reuse the
      # existing 'git' user.
      DynamicUser = lib.mkForce false;
      User = "git";
      Group = "git";
    };
  };

  services.depot.restic = {
    paths = [ "/var/lib/gerrit" ];
    exclude = [ "/var/lib/gerrit/tmp" ];
  };
}