feat: add OpenTelemetry tracing and metrics observer
* feat: add OpenTelemetry tracing and metrics observer Add OtelObserver that exports traces and metrics via OTLP HTTP/protobuf to any OpenTelemetry-compatible collector (Jaeger, Grafana Tempo, etc.). - ObserverEvents map to OTel spans (AgentEnd, ToolCall, Error) and metric counters (AgentStart, ChannelMessage, HeartbeatTick) - ObserverMetrics map to OTel histograms and gauges - Spans include proper timing via SpanBuilder.with_start_time - Config: backend="otel", otel_endpoint, otel_service_name - Accepts "otel", "opentelemetry", "otlp" as backend aliases - Graceful fallback to NoopObserver on init failure Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix: resolve unused variable warning and update Cargo.lock Prefix unused `resolved_key` with underscore to suppress clippy warning introduced by upstream changes. Regenerate Cargo.lock after rebase on main. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix: address review comments on OTel observer - Fix metric types: use Gauge for ActiveSessions/QueueDepth (absolute readings, not deltas), Counter<u64> for TokensUsed (monotonic) - Remove duplicate token recording from AgentEnd event handler (TokensUsed metric via record_metric is the canonical path) - Store meter_provider in struct so flush() exports both traces and metrics (was silently dropping metrics on shutdown) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com> Co-authored-by: argenis de la rosa <theonlyhennygod@gmail.com>
This commit is contained in:
Edvard Schøyen
GitHub
parent
89b1ec6fa2
commit
0f6648ceb1
5 changed files with 632 additions and 3 deletions
190
Cargo.lock
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190
Cargo.lock
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@ -517,6 +517,12 @@ version = "1.0.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "92773504d58c093f6de2459af4af33faa518c13451eb8f2b5698ed3d36e7c813"
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[[package]]
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name = "either"
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version = "1.15.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
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[[package]]
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name = "email-encoding"
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version = "0.4.1"
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@ -622,6 +628,17 @@ version = "0.3.32"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7e3450815272ef58cec6d564423f6e755e25379b217b0bc688e295ba24df6b1d"
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[[package]]
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name = "futures-executor"
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version = "0.3.32"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf29c38818342a3b26b5b923639e7b1f4a61fc5e76102d4b1981c6dc7a7579d"
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dependencies = [
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"futures-core",
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"futures-task",
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"futures-util",
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]
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[[package]]
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name = "futures-io"
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version = "0.3.32"
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@ -1085,6 +1102,15 @@ version = "1.70.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695"
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[[package]]
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name = "itertools"
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version = "0.14.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
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dependencies = [
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"either",
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]
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[[package]]
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name = "itoa"
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version = "1.0.17"
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@ -1325,6 +1351,76 @@ version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c08d65885ee38876c4f86fa503fb49d7b507c2b62552df7c70b2fce627e06381"
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[[package]]
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name = "opentelemetry"
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version = "0.31.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b84bcd6ae87133e903af7ef497404dda70c60d0ea14895fc8a5e6722754fc2a0"
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dependencies = [
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"futures-core",
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"futures-sink",
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"js-sys",
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"pin-project-lite",
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"thiserror 2.0.18",
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]
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[[package]]
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name = "opentelemetry-http"
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version = "0.31.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d7a6d09a73194e6b66df7c8f1b680f156d916a1a942abf2de06823dd02b7855d"
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dependencies = [
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"async-trait",
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"bytes",
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"http",
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"opentelemetry",
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"reqwest",
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]
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[[package]]
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name = "opentelemetry-otlp"
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version = "0.31.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7a2366db2dca4d2ad033cad11e6ee42844fd727007af5ad04a1730f4cb8163bf"
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dependencies = [
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"http",
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"opentelemetry",
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"opentelemetry-http",
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"opentelemetry-proto",
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"opentelemetry_sdk",
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"prost",
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"reqwest",
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"thiserror 2.0.18",
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]
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[[package]]
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name = "opentelemetry-proto"
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version = "0.31.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a7175df06de5eaee9909d4805a3d07e28bb752c34cab57fa9cff549da596b30f"
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dependencies = [
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"opentelemetry",
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"opentelemetry_sdk",
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"prost",
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"tonic",
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"tonic-prost",
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]
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[[package]]
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name = "opentelemetry_sdk"
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version = "0.31.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e14ae4f5991976fd48df6d843de219ca6d31b01daaab2dad5af2badeded372bd"
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dependencies = [
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"futures-channel",
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"futures-executor",
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"futures-util",
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"opentelemetry",
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"percent-encoding",
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"rand 0.9.2",
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"thiserror 2.0.18",
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]
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[[package]]
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name = "option-ext"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
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[[package]]
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name = "pin-project"
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version = "1.1.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "677f1add503faace112b9f1373e43e9e054bfdd22ff1a63c1bc485eaec6a6a8a"
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dependencies = [
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"pin-project-internal",
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]
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[[package]]
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name = "pin-project-internal"
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version = "1.1.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6e918e4ff8c4549eb882f14b3a4bc8c8bc93de829416eacf579f1207a8fbf861"
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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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]
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[[package]]
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name = "pin-project-lite"
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version = "0.2.16"
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"thiserror 1.0.69",
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]
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[[package]]
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name = "prost"
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version = "0.14.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d2ea70524a2f82d518bce41317d0fae74151505651af45faf1ffbd6fd33f0568"
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dependencies = [
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"bytes",
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"prost-derive",
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]
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[[package]]
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name = "prost-derive"
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version = "0.14.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "27c6023962132f4b30eb4c172c91ce92d933da334c59c23cddee82358ddafb0b"
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dependencies = [
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"anyhow",
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"itertools",
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "psm"
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version = "0.1.30"
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[[package]]
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name = "syn"
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version = "2.0.115"
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version = "2.0.116"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6e614ed320ac28113fa64972c4262d5dbc89deacdfd00c34a3e4cea073243c12"
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checksum = "3df424c70518695237746f84cede799c9c58fcb37450d7b23716568cc8bc69cb"
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dependencies = [
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"proc-macro2",
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"quote",
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5d99f8c9a7727884afe522e9bd5edbfc91a3312b36a77b5fb8926e4c31a41801"
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[[package]]
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name = "tonic"
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version = "0.14.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7f32a6f80051a4111560201420c7885d0082ba9efe2ab61875c587bb6b18b9a0"
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dependencies = [
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"async-trait",
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"base64",
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"bytes",
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"http",
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"http-body",
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"http-body-util",
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"percent-encoding",
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"pin-project",
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"sync_wrapper",
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"tokio-stream",
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"tower-layer",
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"tower-service",
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"tracing",
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]
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[[package]]
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name = "tonic-prost"
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version = "0.14.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9f86539c0089bfd09b1f8c0ab0239d80392af74c21bc9e0f15e1b4aca4c1647f"
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dependencies = [
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"bytes",
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"prost",
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"tonic",
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]
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[[package]]
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name = "tower"
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version = "0.5.3"
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checksum = "63e71662fa4b2a2c3a26f570f037eb95bb1f85397f3cd8076caed2f026a6d100"
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dependencies = [
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"pin-project-lite",
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"tracing-attributes",
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"tracing-core",
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]
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[[package]]
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name = "tracing-attributes"
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version = "0.1.31"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
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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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]
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[[package]]
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name = "tracing-core"
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version = "0.1.36"
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"http-body-util",
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"lettre",
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"mail-parser",
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"opentelemetry",
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"opentelemetry-otlp",
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"opentelemetry_sdk",
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"prometheus",
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"reqwest",
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"rusqlite",
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