chrome-devtools-mcp-v0.15.0
2 次代码提交
| 作者 | SHA1 | 备注 | 提交日期 | |
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 Ergün Erdoğmuş
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210bacdb04 |
chore: Implement ClearcutSender HTTP transport for telemetry disabled by default (#805)
This PR completes the telemetry system by implementing the transport layer for `ClearcutSender`. It enables actual HTTP communication with the Clearcut backend, handling event batching, rate limiting, and reliable delivery, including robust shutdown handling. **Key Changes:** * **HTTP Transport**: Implemented `fetch`-based transport sending `POST` requests to the Clearcut HTTP server. * **Event Batching**: Events are now buffered and flushed periodically (default: 15 minutes) or on shutdown. * **Reliability & Rate Limiting**: * **Server-Side Backoff**: Respects `next_request_wait_millis` from server responses to handle rate limiting dynamically. * **Transient Error Retries**: Failed requests (5xx, 429) result in events being requeued for the next flush. * **Request Timeouts**: Enforced 30s timeout on requests to prevent hanging processes. * **Session Rotation**: Automatically rotates session IDs every 24 hours. * **Safety & Stability**: * **Buffer Overflow Protection**: Caps the buffer at 1000 events to prevent memory leaks, dropping oldest events if necessary. * **Optimistic Removal**: Prevents race conditions and duplicate events during shutdown by optimistically removing events from the buffer before sending. * **Testing Improvements**: * **E2E Robustness**: Updated E2E tests to use a mock web server instead of relying on the logger to log specific lines. **Implementation Roadmap:** These changes finalize the planned telemetry architecture: 1. **CLI & Opt-out Mechanism ([Merged](https://github.com/ChromeDevTools/chrome-devtools-mcp/pull/757))** 2. **Logger Scaffolding & Integration ([Merged](https://github.com/ChromeDevTools/chrome-devtools-mcp/pull/758))** 3. **Persistence Layer ([Merged](https://github.com/ChromeDevTools/chrome-devtools-mcp/pull/766))** 4. **Watchdog Process Architecture ([Merged](https://github.com/ChromeDevTools/chrome-devtools-mcp/pull/769))** 5. **Transport, Batching & Retries (This PR):** * Finalized `ClearcutSender` with HTTP transport, batching, and server-directed backoff strategies. --------- Co-authored-by: Alex Rudenko <alexrudenko@chromium.org> |
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Ergün Erdoğmuş
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ee35f207eb |
chore: Implement Watchdog process for reliable telemetry (#777)
This PR implements the watchdog process architecture for the telemetry system. It moves the `ClearcutSender` execution to a dedicated child process, ensuring that events—especially shutdown events—are reliably transmitted even if the main server process terminates abruptly. Added an e2e test that runs the server, checks the log file and confirms the telemetry logs exist and that the watchdog process is correctly killed after sending the shutdown event once the main process is killed. **Implementation Roadmap:** This is the fourth in a series of PRs designed to implement the telemetry system: 1. **CLI & Opt-out Mechanism ([Merged](https://github.com/ChromeDevTools/chrome-devtools-mcp/pull/757)):** * Added `--usage-statistics` flag and transparency logging. 2. **Logger Scaffolding & Integration ([Merged](https://github.com/ChromeDevTools/chrome-devtools-mcp/pull/758)):** * **`ClearcutLogger`**: Implemented the main logging entry point. * **One-way Data Flow**: Integrated `logToolInvocation` and `logServerStart` hooks into `main.ts` to capture events. * **`ClearcutSender`**: Introduced a transport abstraction. * **Type Definitions**: Added TypeScript definitions for the telemetry Protocol Buffer messages. 3. **Persistence Layer ([Merged](https://github.com/ChromeDevTools/chrome-devtools-mcp/pull/766)):** * **`FilePersistence`**: Implemented a local file-based state manager to persist the `lastActive` timestamp. * **Daily Active Logic**: Integrated persistence into `ClearcutLogger` to automatically detect and log `daily_active` events (with `days_since_last_active` calculation) via `logDailyActiveIfNeeded`. 4. **Watchdog Process Architecture (This PR):** * **`WatchdogClient`**: Added a client-side wrapper to spawn and communicate with the watchdog process via `stdin`. * **`watchdog/main.ts`**: Created the entry point for the watchdog process. It listens for IPC messages and uses `ClearcutSender` to transmit events. * **Reliable Shutdown**: The watchdog monitors the parent process and guarantees a `shutdown` event is sent when the parent exits or crashes (detecting `stdin` closure). * **Refactoring**: Moved `ClearcutSender` to the `watchdog` directory and updated `ClearcutLogger` to delegate event sending to the `WatchdogClient`. 5. **Transport, Batching & Retries (Next):** * Finalize `ClearcutSender` with actual HTTP transport logic, including event batching and exponential backoff retries. |