refactor(web/converse): Refactor first handlers to rouille r/2530

This commit starts the refactoring process towards dropping actix (and
tokio, ...). It builds, but at this commit, Converse does *not* work.

I decided to commit to avoid more ridiculous diffs.

Included changes:

* Added dependency on rouille.

* Refactored DbExecutor (formerly actix actor) to simply be a type
  with a few methods. Most actor messages still exist as they are
  being referred to by handlers.

* Started refactoring two of the handlers (and their related renderer
  functions) into Rouille's call scheme.

Important note: Rouille does not have safe session management out of
the box, and it will need to be implemented as this progresses.

Change-Id: I3e3f203e0705e561e1a3392e8f75dbe273d5fa81
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2861
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>

1 files changed, 336 insertions, 13 deletions

diff --git a/web/converse/Cargo.lock b/web/converse/Cargo.lock
index 351ab1d261a5..b022bdd55e43 100644
--- a/web/converse/Cargo.lock
+++ b/web/converse/Cargo.lock
@@ -81,8 +81,8 @@ dependencies = [
  "lazy_static",
  "lazycell",
  "log 0.4.14",
- "mime",
- "mime_guess",
+ "mime 0.3.16",
+ "mime_guess 2.0.3",
  "mio",
  "net2",
  "num_cpus",
@@ -135,6 +135,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
 [[package]]
+name = "adler32"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aae1277d39aeec15cb388266ecc24b11c80469deae6067e17a1a7aa9e5c1f234"
+
+[[package]]
 name = "aead"
 version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -207,6 +213,24 @@ dependencies = [
 ]
 
 [[package]]
+name = "arrayref"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4c527152e37cf757a3f78aae5a06fbeefdb07ccc535c980a3208ee3060dd544"
+
+[[package]]
+name = "arrayvec"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
+
+[[package]]
+name = "ascii"
+version = "0.8.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97be891acc47ca214468e09425d02cef3af2c94d0d82081cd02061f996802f14"
+
+[[package]]
 name = "askama"
 version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -312,6 +336,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
 [[package]]
+name = "blake2b_simd"
+version = "0.5.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "afa748e348ad3be8263be728124b24a24f268266f6f5d58af9d75f6a40b5c587"
+dependencies = [
+ "arrayref",
+ "arrayvec",
+ "constant_time_eq",
+]
+
+[[package]]
 name = "block-buffer"
 version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -341,6 +376,16 @@ dependencies = [
 ]
 
 [[package]]
+name = "buf_redux"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b953a6887648bb07a535631f2bc00fbdb2a2216f135552cb3f534ed136b9c07f"
+dependencies = [
+ "memchr 2.3.4",
+ "safemem",
+]
+
+[[package]]
 name = "byteorder"
 version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -389,6 +434,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "chunked_transfer"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "498d20a7aaf62625b9bf26e637cf7736417cde1d0c99f1d04d1170229a85cf87"
+
+[[package]]
 name = "cipher"
 version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -439,6 +490,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "constant_time_eq"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
+
+[[package]]
 name = "converse"
 version = "0.1.0"
 dependencies = [
@@ -456,11 +513,12 @@ dependencies = [
  "hyper",
  "log 0.4.14",
  "md5",
- "mime_guess",
+ "mime_guess 2.0.3",
  "pq-sys",
  "pulldown-cmark",
  "r2d2",
  "rand 0.4.6",
+ "rouille",
  "serde",
  "serde_derive",
  "serde_json",
@@ -586,6 +644,17 @@ dependencies = [
 ]
 
 [[package]]
+name = "crossbeam-utils"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7e9d99fa91428effe99c5c6d4634cdeba32b8cf784fc428a2a687f61a952c49"
+dependencies = [
+ "autocfg 1.0.1",
+ "cfg-if 1.0.0",
+ "lazy_static",
+]
+
+[[package]]
 name = "crypto-mac"
 version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -635,6 +704,17 @@ dependencies = [
 ]
 
 [[package]]
+name = "deflate"
+version = "0.7.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "707b6a7b384888a70c8d2e8650b3e60170dfc6a67bb4aa67b6dfca57af4bedb4"
+dependencies = [
+ "adler32",
+ "byteorder",
+ "gzip-header",
+]
+
+[[package]]
 name = "diesel"
 version = "1.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -669,6 +749,17 @@ dependencies = [
 ]
 
 [[package]]
+name = "dirs"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3fd78930633bd1c6e35c4b42b1df7b0cbc6bc191146e512bb3bedf243fcc3901"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi 0.3.9",
+]
+
+[[package]]
 name = "dtoa"
 version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -798,6 +889,18 @@ dependencies = [
 ]
 
 [[package]]
+name = "filetime"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d34cfa13a63ae058bfa601fe9e313bbdb3746427c1459185464ce0fcf62e1e8"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "redox_syscall 0.2.5",
+ "winapi 0.3.9",
+]
+
+[[package]]
 name = "flate2"
 version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -875,13 +978,24 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
+version = "0.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "wasi 0.9.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "getrandom"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
 dependencies = [
  "cfg-if 1.0.0",
  "libc",
- "wasi",
+ "wasi 0.10.0+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -901,6 +1015,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f6503fe142514ca4799d4c26297c4248239fe8838d827db6bd6065c6ed29a6ce"
 
 [[package]]
+name = "gzip-header"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0131feb3d3bb2a5a238d8a4d09f6353b7ebfdc52e77bccbf4ea6eaa751dde639"
+dependencies = [
+ "crc32fast",
+]
+
+[[package]]
 name = "h2"
 version = "0.1.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1004,7 +1127,7 @@ dependencies = [
  "iovec",
  "language-tags",
  "log 0.4.14",
- "mime",
+ "mime 0.3.16",
  "net2",
  "percent-encoding 1.0.1",
  "relay",
@@ -1013,7 +1136,7 @@ dependencies = [
  "tokio-io",
  "tokio-proto",
  "tokio-service",
- "unicase",
+ "unicase 2.6.0",
  "want",
 ]
 
@@ -1232,18 +1355,39 @@ dependencies = [
 
 [[package]]
 name = "mime"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba626b8a6de5da682e1caa06bdb42a335aee5a84db8e5046a3e8ab17ba0a3ae0"
+dependencies = [
+ "log 0.3.9",
+]
+
+[[package]]
+name = "mime"
 version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
 
 [[package]]
 name = "mime_guess"
+version = "1.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "216929a5ee4dd316b1702eedf5e74548c123d370f47841ceaac38ca154690ca3"
+dependencies = [
+ "mime 0.2.6",
+ "phf",
+ "phf_codegen",
+ "unicase 1.4.2",
+]
+
+[[package]]
+name = "mime_guess"
 version = "2.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2684d4c2e97d99848d30b324b00c8fcc7e5c897b7cbb5819b09e7c90e8baf212"
 dependencies = [
- "mime",
- "unicase",
+ "mime 0.3.16",
+ "unicase 2.6.0",
 ]
 
 [[package]]
@@ -1309,6 +1453,24 @@ dependencies = [
 ]
 
 [[package]]
+name = "multipart"
+version = "0.15.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "adba94490a79baf2d6a23eac897157047008272fa3eecb3373ae6377b91eca28"
+dependencies = [
+ "buf_redux",
+ "httparse",
+ "log 0.4.14",
+ "mime 0.2.6",
+ "mime_guess 1.8.8",
+ "quick-error",
+ "rand 0.4.6",
+ "safemem",
+ "tempdir",
+ "twoway",
+]
+
+[[package]]
 name = "net2"
 version = "0.2.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1511,6 +1673,45 @@ dependencies = [
 ]
 
 [[package]]
+name = "phf"
+version = "0.7.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b3da44b85f8e8dfaec21adae67f95d93244b2ecf6ad2a692320598dcc8e6dd18"
+dependencies = [
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_codegen"
+version = "0.7.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b03e85129e324ad4166b06b2c7491ae27fe3ec353af72e72cd1654c7225d517e"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_generator"
+version = "0.7.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09364cc93c159b8b06b1f4dd8a4398984503483891b0c26b867cf431fb132662"
+dependencies = [
+ "phf_shared",
+ "rand 0.6.5",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.7.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "234f71a15de2288bcb7e3b6515828d22af7ec8598ee6d24c3b526fa0a80b67a0"
+dependencies = [
+ "siphasher",
+ "unicase 1.4.2",
+]
+
+[[package]]
 name = "pkg-config"
 version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1737,7 +1938,7 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.2",
 ]
 
 [[package]]
@@ -1836,6 +2037,17 @@ dependencies = [
 ]
 
 [[package]]
+name = "redox_users"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "de0737333e7a9502c789a36d7c7fa6092a49895d4faa31ca5df163857ded2e9d"
+dependencies = [
+ "getrandom 0.1.16",
+ "redox_syscall 0.1.57",
+ "rust-argon2",
+]
+
+[[package]]
 name = "regex"
 version = "1.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1862,6 +2074,15 @@ dependencies = [
 ]
 
 [[package]]
+name = "remove_dir_all"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
+dependencies = [
+ "winapi 0.3.9",
+]
+
+[[package]]
 name = "resolv-conf"
 version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1872,6 +2093,43 @@ dependencies = [
 ]
 
 [[package]]
+name = "rouille"
+version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "112568052ec17fa26c6c11c40acbb30d3ad244bf3d6da0be181f5e7e42e5004f"
+dependencies = [
+ "base64 0.9.3",
+ "brotli2",
+ "chrono",
+ "deflate",
+ "filetime",
+ "multipart",
+ "num_cpus",
+ "rand 0.5.6",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "sha1",
+ "term",
+ "threadpool",
+ "time",
+ "tiny_http",
+ "url",
+]
+
+[[package]]
+name = "rust-argon2"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4b18820d944b33caa75a71378964ac46f58517c92b6ae5f762636247c09e78fb"
+dependencies = [
+ "base64 0.13.0",
+ "blake2b_simd",
+ "constant_time_eq",
+ "crossbeam-utils 0.8.3",
+]
+
+[[package]]
 name = "rustc-demangle"
 version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2019,6 +2277,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "siphasher"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b8de496cf83d4ed58b6be86c3a275b8602f6ffe98d3024a869e124147a9a3ac"
+
+[[package]]
 name = "slab"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2161,6 +2425,27 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b157868d8ac1f56b64604539990685fa7611d8fa9e5476cf0c02cf34d32917c5"
 
 [[package]]
+name = "tempdir"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15f2b5fb00ccdf689e0149d1b1b3c03fead81c2b37735d812fa8bddbbf41b6d8"
+dependencies = [
+ "rand 0.4.6",
+ "remove_dir_all",
+]
+
+[[package]]
+name = "term"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edd106a334b7657c10b7c540a0106114feadeb4dc314513e97df481d5d966f42"
+dependencies = [
+ "byteorder",
+ "dirs",
+ "winapi 0.3.9",
+]
+
+[[package]]
 name = "termcolor"
 version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2179,16 +2464,39 @@ dependencies = [
 ]
 
 [[package]]
+name = "threadpool"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d050e60b33d41c19108b32cea32164033a9013fe3b46cbd4457559bfbf77afaa"
+dependencies = [
+ "num_cpus",
+]
+
+[[package]]
 name = "time"
-version = "0.1.43"
+version = "0.1.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
+checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
 dependencies = [
  "libc",
+ "wasi 0.10.0+wasi-snapshot-preview1",
  "winapi 0.3.9",
 ]
 
 [[package]]
+name = "tiny_http"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1661fa0a44c95d01604bd05c66732a446c657efb62b5164a7a083a3b552b4951"
+dependencies = [
+ "ascii",
+ "chrono",
+ "chunked_transfer",
+ "log 0.4.14",
+ "url",
+]
+
+[[package]]
 name = "tinyvec"
 version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2553,6 +2861,15 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "unicase"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f4765f83163b74f957c797ad9253caf97f103fb064d3999aea9568d09fc8a33"
+dependencies = [
+ "version_check 0.1.5",
+]
+
+[[package]]
+name = "unicase"
 version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
@@ -2717,9 +3034,15 @@ dependencies = [
 
 [[package]]
 name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.9.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
+
+[[package]]
+name = "wasi"
+version = "0.10.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
 
 [[package]]
 name = "widestring"