feat(tazjin/tgsa): replace translation backend
The GPT backend is cool, but it's also very slow, prone to request errors and quite expensive. This switches to Yandex Translate instead which for all posts that I tested seems to be totally fine. Change-Id: I5217113995b701508a83e7782eb1325957996719 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8826 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
This commit is contained in:
Vincent Ambo
tazjin
parent
6678e768a0
commit
332a821100
4 changed files with 327 additions and 62 deletions
145
users/tazjin/tgsa/Cargo.lock
generated
145
users/tazjin/tgsa/Cargo.lock
generated
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@ -35,6 +35,12 @@ version = "0.13.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd"
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[[package]]
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name = "base64"
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version = "0.21.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "604178f6c5c21f02dc555784810edfb88d34ac2c73b2eae109655649ee73ce3d"
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[[package]]
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name = "bitflags"
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version = "1.3.2"
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@ -130,7 +136,7 @@ dependencies = [
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"proc-macro2",
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"quote",
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"smallvec",
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"syn",
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"syn 1.0.101",
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]
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[[package]]
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@ -140,7 +146,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "dfae75de57f2b2e85e8768c3ea840fd159c8f33e2b6522c7835b7abac81be16e"
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dependencies = [
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"quote",
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"syn",
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"syn 1.0.101",
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]
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[[package]]
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@ -183,7 +189,7 @@ dependencies = [
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"proc-macro2",
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"quote",
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"rustc_version",
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"syn",
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"syn 1.0.101",
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]
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[[package]]
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@ -228,6 +234,21 @@ dependencies = [
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"windows-sys",
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]
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[[package]]
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name = "foreign-types"
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version = "0.3.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
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dependencies = [
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"foreign-types-shared",
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]
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[[package]]
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name = "foreign-types-shared"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
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[[package]]
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name = "form_urlencoded"
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version = "1.1.0"
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@ -307,7 +328,7 @@ dependencies = [
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"markup5ever",
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"proc-macro2",
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"quote",
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"syn",
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"syn 1.0.101",
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]
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[[package]]
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@ -534,6 +555,32 @@ version = "1.15.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e82dad04139b71a90c080c8463fe0dc7902db5192d939bd0950f074d014339e1"
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[[package]]
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name = "openssl"
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version = "0.10.54"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "69b3f656a17a6cbc115b5c7a40c616947d213ba182135b014d6051b73ab6f019"
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dependencies = [
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"bitflags",
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"cfg-if",
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"foreign-types",
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"libc",
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"once_cell",
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"openssl-macros",
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"openssl-sys",
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]
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[[package]]
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name = "openssl-macros"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn 2.0.18",
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]
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[[package]]
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name = "openssl-probe"
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version = "0.1.5"
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@ -542,11 +589,10 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
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[[package]]
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name = "openssl-sys"
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version = "0.9.76"
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version = "0.9.88"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5230151e44c0f05157effb743e8d517472843121cf9243e8b81393edb5acd9ce"
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checksum = "c2ce0f250f34a308dcfdbb351f511359857d4ed2134ba715a4eadd46e1ffd617"
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dependencies = [
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"autocfg",
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"cc",
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"libc",
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"pkg-config",
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@ -653,7 +699,7 @@ dependencies = [
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"proc-macro-hack",
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"proc-macro2",
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"quote",
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"syn",
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"syn 1.0.101",
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]
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[[package]]
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@ -700,9 +746,9 @@ checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
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[[package]]
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name = "proc-macro2"
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version = "1.0.46"
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version = "1.0.60"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "94e2ef8dbfc347b10c094890f778ee2e36ca9bb4262e86dc99cd217e35f3470b"
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checksum = "dec2b086b7a862cf4de201096214fa870344cf922b2b30c167badb3af3195406"
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dependencies = [
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"unicode-ident",
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]
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@ -715,9 +761,9 @@ checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
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[[package]]
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name = "quote"
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version = "1.0.21"
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version = "1.0.28"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
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checksum = "1b9ab9c7eadfd8df19006f1cf1a4aed13540ed5cbc047010ece5826e10825488"
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dependencies = [
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"proc-macro2",
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]
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@ -821,13 +867,28 @@ dependencies = [
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"winapi",
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]
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[[package]]
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name = "ring"
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version = "0.16.20"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3053cf52e236a3ed746dfc745aa9cacf1b791d846bdaf412f60a8d7d6e17c8fc"
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dependencies = [
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"cc",
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"libc",
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"once_cell",
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"spin",
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"untrusted",
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"web-sys",
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"winapi",
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]
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[[package]]
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name = "rouille"
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version = "3.5.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "18b2380c42510ef4a28b5f228a174c801e0dec590103e215e60812e2e2f34d05"
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dependencies = [
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"base64",
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"base64 0.13.0",
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"chrono",
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"filetime",
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"multipart",
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@ -928,6 +989,9 @@ name = "serde"
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version = "1.0.145"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "728eb6351430bccb993660dfffc5a72f91ccc1295abaa8ce19b27ebe4f75568b"
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dependencies = [
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"serde_derive",
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]
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[[package]]
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name = "serde_derive"
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@ -937,7 +1001,7 @@ checksum = "81fa1584d3d1bcacd84c277a0dfe21f5b0f6accf4a23d04d4c6d61f1af522b4c"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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"syn 1.0.101",
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]
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[[package]]
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@ -998,6 +1062,12 @@ dependencies = [
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"winapi",
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]
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[[package]]
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name = "spin"
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version = "0.5.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
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[[package]]
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name = "stable_deref_trait"
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version = "1.2.0"
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@ -1041,6 +1111,17 @@ dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "syn"
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version = "2.0.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "32d41677bcbe24c20c52e7c70b0d8db04134c5d1066bf98662e2871ad200ea3e"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "tempfile"
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version = "3.3.0"
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@ -1071,8 +1152,12 @@ name = "tgsa"
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version = "0.1.0"
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dependencies = [
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"anyhow",
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"base64 0.21.2",
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"crimp",
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"ego-tree",
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"lazy_static",
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"openssl",
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"ring",
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"rouille",
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"scraper",
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"serde",
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@ -1097,14 +1182,22 @@ dependencies = [
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[[package]]
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name = "time"
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version = "0.3.15"
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version = "0.3.22"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d634a985c4d4238ec39cacaed2e7ae552fbd3c476b552c1deac3021b7d7eaf0c"
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checksum = "ea9e1b3cf1243ae005d9e74085d4d542f3125458f3a81af210d901dcd7411efd"
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dependencies = [
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"libc",
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"num_threads",
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"serde",
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"time-core",
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]
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[[package]]
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name = "time-core"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7300fbefb4dadc1af235a9cef3737cea692a9d97e1b9cbcd4ebdae6f8868e6fb"
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[[package]]
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name = "tiny_http"
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version = "0.8.2"
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@ -1178,6 +1271,12 @@ version = "0.1.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
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[[package]]
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name = "untrusted"
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version = "0.7.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
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[[package]]
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name = "url"
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version = "2.3.1"
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@ -1240,7 +1339,7 @@ dependencies = [
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"once_cell",
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"proc-macro2",
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"quote",
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"syn",
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"syn 1.0.101",
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"wasm-bindgen-shared",
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]
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@ -1262,7 +1361,7 @@ checksum = "07bc0c051dc5f23e307b13285f9d75df86bfdf816c5721e573dec1f9b8aa193c"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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"syn 1.0.101",
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"wasm-bindgen-backend",
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"wasm-bindgen-shared",
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]
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@ -1273,6 +1372,16 @@ version = "0.2.83"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1c38c045535d93ec4f0b4defec448e4291638ee608530863b1e2ba115d4fff7f"
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[[package]]
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name = "web-sys"
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version = "0.3.60"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bcda906d8be16e728fd5adc5b729afad4e444e106ab28cd1c7256e54fa61510f"
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dependencies = [
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"js-sys",
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"wasm-bindgen",
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]
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[[package]]
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name = "winapi"
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version = "0.3.9"
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@ -10,5 +10,9 @@ rouille = { version = "3.5", default-features = false }
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url = "2.3"
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scraper = "0.13"
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ego-tree = "0.6" # in tandem with 'scraper'
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serde = "1.0"
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serde = { version = "1.0", features = ["derive"] }
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serde_json = "1.0"
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ring = "0.16.20"
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openssl = "0.10.54"
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base64 = "0.21.2"
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lazy_static = "1.4.0"
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@ -1,10 +1,11 @@
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use anyhow::{anyhow, Context, Result};
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use scraper::{Html, Selector};
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use serde_json::Value;
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use std::collections::HashMap;
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use std::sync::RwLock;
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use std::time::{Duration, Instant};
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mod translate;
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#[derive(Clone, Debug, Eq, Hash, PartialEq)]
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struct TgLink {
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username: String,
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@ -63,46 +64,6 @@ fn fetch_post(link: &TgLink, embed: bool) -> Result<String> {
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Ok(response.body)
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}
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fn fetch_translation(message: &str) -> Result<String> {
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let request = serde_json::json!({
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"model": "gpt-3.5-turbo",
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"messages": [
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{"role": "user", "content": "Please translate the following message from a Telegram channel into English. If the post is already partially in English, please leave those bits intact as they are. Please respond only with the translation."},
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{"role": "user", "content": message}
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]
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});
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let response: Value = crimp::Request::post("https://api.openai.com/v1/chat/completions")
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.bearer_auth(&std::env::var("OPENAPI_KEY").context("no openapi key set")?)?
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.json(&request)?
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.send()
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.context("failed to fetch translation from openai")?
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.as_json::<Value>()?
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.error_for_status(|resp| {
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anyhow!(
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"translation request failed: {} ({})",
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resp.body,
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resp.status
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)
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})?
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.body;
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// we want choices[0].message.content, and inshallah it's the right thing.
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let translation = response
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.get("choices")
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.ok_or_else(|| anyhow!("missing 'choices' key"))?
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.get(0)
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.ok_or_else(|| anyhow!("empty 'choices' or something"))?
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.get("message")
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.ok_or_else(|| anyhow!("missing 'message' key"))?
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.get("content")
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.ok_or_else(|| anyhow!("missing 'content' key"))?
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.as_str()
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.ok_or_else(|| anyhow!("'content' was not a string"))?;
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Ok(translation.to_string())
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}
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// in some cases, posts can not be embedded, but telegram still
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// includes their content in metadata tags for content previews.
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//
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@ -306,7 +267,7 @@ fn fetch_with_cache(cache: &Cache, link: &TgLink) -> Result<TgPost> {
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if let Some(message) = &msg.message {
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if link.translated {
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println!("translating {}#{}", link.username, link.message_id);
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msg.message = Some(fetch_translation(message)?);
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msg.message = Some(translate::fetch_translation(message)?);
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}
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}
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@ -410,7 +371,7 @@ if you see this message and think you did the above correctly, you
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didn't. try again. idiot.
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it can also translate posts from russian, ukrainian or whatever other
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dumb language you speak into english, by adding `/translate/`, for
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dumb language you speak into english by adding `/translate/`, for
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example:
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https://tgsa.tazj.in/translate/https://t.me/strelkovii/4329
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191
users/tazjin/tgsa/src/translate.rs
Normal file
191
users/tazjin/tgsa/src/translate.rs
Normal file
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@ -0,0 +1,191 @@
|
|||
//! integration with yandex cloud translate api, for automatically
|
||||
//! translating telegram posts.
|
||||
//!
|
||||
//! most of this module is concerned with handling the authentication
|
||||
//! tokens for yandex cloud, as jwt signing needs to be handled
|
||||
//! manually (none of the rust jwt libraries that i tried actually
|
||||
//! work).
|
||||
|
||||
use anyhow::{anyhow, Context, Result};
|
||||
use base64::prelude::BASE64_URL_SAFE_NO_PAD as B64;
|
||||
use base64::Engine;
|
||||
use lazy_static::lazy_static;
|
||||
use ring::signature as sig;
|
||||
use serde::Deserialize;
|
||||
use serde_json::{json, Value};
|
||||
use std::sync::Mutex;
|
||||
use std::time::{Duration, SystemTime};
|
||||
|
||||
/// token exchange url (exchanging a signed jwt for an iam token
|
||||
/// understood by the translation service)
|
||||
const TOKEN_URL: &str = "https://iam.api.cloud.yandex.net/iam/v1/tokens";
|
||||
|
||||
/// translation endpoint
|
||||
const TRANSLATE_URL: &str = "https://translate.api.cloud.yandex.net/translate/v2/translate";
|
||||
|
||||
/// describes the private key as downloaded from yandex, pem-encoded.
|
||||
#[derive(Deserialize)]
|
||||
struct AuthorizedKey {
|
||||
id: String,
|
||||
service_account_id: String,
|
||||
private_key: String,
|
||||
}
|
||||
|
||||
/// cached iam token for yandex cloud
|
||||
struct Token {
|
||||
token: String,
|
||||
expiry: SystemTime,
|
||||
}
|
||||
|
||||
impl Token {
|
||||
fn is_expired(&self) -> bool {
|
||||
self.expiry < SystemTime::now()
|
||||
}
|
||||
}
|
||||
|
||||
lazy_static! {
|
||||
static ref KEY_FILE: String =
|
||||
std::env::var("YANDEX_KEY_FILE").expect("`YANDEX_KEY_FILE` variable should be set");
|
||||
static ref CACHED_TOKEN: Mutex<Token> = {
|
||||
let token = refresh_token().expect("fetching initial translation token must not fail");
|
||||
Mutex::new(token)
|
||||
};
|
||||
}
|
||||
|
||||
/// wrap all the authentication logic below into a single function.
|
||||
fn refresh_token() -> Result<Token> {
|
||||
let file = std::fs::File::open(KEY_FILE.as_str())?;
|
||||
let key: AuthorizedKey = serde_json::from_reader(file)?;
|
||||
let jwt = sign_yandex_jwt(&key)?;
|
||||
let token = fetch_iam_token(&jwt)?;
|
||||
|
||||
Ok(Token {
|
||||
token,
|
||||
expiry: SystemTime::now() + Duration::from_secs(3600),
|
||||
})
|
||||
}
|
||||
|
||||
/// wrapper around the cached token that refreshes if required.
|
||||
fn current_token() -> Result<String> {
|
||||
let mut token = CACHED_TOKEN
|
||||
.lock()
|
||||
.expect("thread operating on token should never fail");
|
||||
|
||||
if token.is_expired() {
|
||||
println!("refreshing translation token");
|
||||
*token = refresh_token().context("refreshing translation token")?;
|
||||
}
|
||||
|
||||
Ok(token.token.clone())
|
||||
}
|
||||
|
||||
/// use openssl to read the pem-encoded key, as ring itself is not
|
||||
/// capable of this.
|
||||
fn read_pem_key(key: &AuthorizedKey) -> Result<sig::RsaKeyPair> {
|
||||
let rsa = openssl::rsa::Rsa::private_key_from_pem(key.private_key.as_bytes())
|
||||
.context("parsing RSA key")?;
|
||||
|
||||
let der = rsa
|
||||
.private_key_to_der()
|
||||
.context("encoding key as DER for ring")?;
|
||||
|
||||
sig::RsaKeyPair::from_der(&der).map_err(|err| anyhow!("decoding DER key in ring: {}", err))
|
||||
}
|
||||
|
||||
/// manually construct and sign the jwt required to perform the
|
||||
/// iam-token key exchange with yandex.
|
||||
fn sign_yandex_jwt(key: &AuthorizedKey) -> Result<String> {
|
||||
let iat = SystemTime::now()
|
||||
.duration_since(SystemTime::UNIX_EPOCH)?
|
||||
.as_secs();
|
||||
|
||||
let header = json!({
|
||||
"typ": "JWT",
|
||||
"alg": "PS256",
|
||||
"kid": key.id,
|
||||
})
|
||||
.to_string();
|
||||
|
||||
let payload = json!({
|
||||
"iss": key.service_account_id,
|
||||
"aud": TOKEN_URL,
|
||||
"iat": iat,
|
||||
"exp": iat + 60,
|
||||
})
|
||||
.to_string();
|
||||
|
||||
let unsigned = format!("{}.{}", B64.encode(header), B64.encode(payload));
|
||||
let key_pair = read_pem_key(key)?;
|
||||
|
||||
let rng = ring::rand::SystemRandom::new();
|
||||
let mut signature = vec![0; key_pair.public_modulus_len()];
|
||||
key_pair
|
||||
.sign(
|
||||
&sig::RSA_PSS_SHA256,
|
||||
&rng,
|
||||
unsigned.as_bytes(),
|
||||
&mut signature,
|
||||
)
|
||||
.map_err(|err| anyhow!("while signing JWT: {}", err))?;
|
||||
|
||||
Ok(format!("{}.{}", unsigned, B64.encode(&signature)))
|
||||
}
|
||||
|
||||
/// exchange the jwt for an iam token
|
||||
fn fetch_iam_token(token: &str) -> Result<String> {
|
||||
#[derive(Deserialize)]
|
||||
#[serde(rename_all = "camelCase")]
|
||||
struct TokenResponse {
|
||||
iam_token: String,
|
||||
}
|
||||
|
||||
let response = crimp::Request::post(TOKEN_URL)
|
||||
.json(&json!({
|
||||
"jwt": token,
|
||||
}))?
|
||||
.send()?
|
||||
.error_for_status(|resp| {
|
||||
anyhow::anyhow!("{} ({})", String::from_utf8_lossy(&resp.body), resp.status)
|
||||
})?
|
||||
.as_json::<TokenResponse>()
|
||||
.context("deserialising IAM token")?;
|
||||
|
||||
Ok(response.body.iam_token)
|
||||
}
|
||||
|
||||
pub fn fetch_translation(message: &str) -> Result<String> {
|
||||
let request_body = json!({
|
||||
"folderId": "b1gq41rsbggeum4qafnh",
|
||||
"texts": [ message ],
|
||||
"targetLanguageCode": "en",
|
||||
});
|
||||
|
||||
let response = crimp::Request::post(TRANSLATE_URL)
|
||||
.bearer_auth(¤t_token()?)
|
||||
.context("adding 'Bearer' token")?
|
||||
.json(&request_body)
|
||||
.context("preparing JSON body")?
|
||||
.send()
|
||||
.context("failed to fetch translation from yandex")?
|
||||
.error_for_status(|resp| {
|
||||
anyhow!(
|
||||
"translation request failed: {} ({})",
|
||||
String::from_utf8_lossy(&resp.body),
|
||||
resp.status
|
||||
)
|
||||
})?
|
||||
.as_json::<Value>()?
|
||||
.body;
|
||||
|
||||
let translation = response
|
||||
.get("translations")
|
||||
.ok_or_else(|| anyhow!("missing 'translations' key"))?
|
||||
.get(0)
|
||||
.ok_or_else(|| anyhow!("translations list is empty"))?
|
||||
.get("text")
|
||||
.ok_or_else(|| anyhow!("translation missing 'text' key"))?
|
||||
.as_str()
|
||||
.ok_or_else(|| anyhow!("'text' was not a string"))?;
|
||||
|
||||
Ok(translation.to_string())
|
||||
}
|
||||
Loading…
Reference in a new issue