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feat(metrics): add real-time throughput sampling and byte-counting metrics

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Jürgen Kunz
2026-02-13 23:18:22 +00:00
parent 37372353d7
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changelog.md
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# Changelog
## 2026-02-13 - 25.1.0 - feat(metrics)
add real-time throughput sampling and byte-counting metrics
- Add CountingBody wrapper to count HTTP request and response bytes and report them to MetricsCollector.
- Implement lock-free hot-path byte recording and a cold-path sampling API (sample_all) in MetricsCollector with throughput history and configurable retention (default 3600s).
- Spawn a background sampling task in RustProxy (configurable sample_interval_ms) and tear it down on stop so throughput trackers are regularly sampled.
- Instrument passthrough TCP forwarding and socket-relay paths to record per-chunk bytes (lock-free) so long-lived connections contribute to throughput measurements.
- Wrap HTTP request/response bodies with CountingBody in proxy_service to capture bytes_in/bytes_out and report on body completion; connection_closed handling updated accordingly.
- Expose recent throughput metrics to the TypeScript adapter (throughputRecentIn/Out) and pass metrics settings from the TS SmartProxy into Rust.
- Add http-body dependency and update Cargo.toml/Cargo.lock entries for the new body wrapper usage.
- Add unit tests for MetricsCollector throughput tracking and a new end-to-end throughput test (test.throughput.ts).
- Update test certificates (assets/certs cert.pem and key.pem) used by TLS tests.
## 2026-02-13 - 25.0.0 - BREAKING CHANGE(certs)
accept a second eventComms argument in certProvisionFunction, add cert provisioning event types, and emit certificate lifecycle events