feat(metrics): expose worker metrics over HTTP#547
Merged
Conversation
neSpecc
previously approved these changes
Apr 29, 2026
Contributor
There was a problem hiding this comment.
Pull request overview
This PR migrates worker Prometheus metrics from a Pushgateway-based model to a scraper-based HTTP endpoint (/metrics), aligning with pull-based monitoring (e.g., VictoriaMetrics/Prometheus scraping).
Changes:
- Replace Pushgateway metrics exporting with an HTTP server exposing
/metricsand/-/healthy. - Update runner wiring to start/stop the metrics exporter via
startMetricsServer(). - Update sample/test environment files to the new metrics endpoint configuration variables.
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 6 comments.
| File | Description |
|---|---|
runner.ts |
Switches runner metrics startup/shutdown logic to the new metrics server. |
lib/metrics.ts |
Implements an HTTP server exposing Prometheus metrics instead of Pushgateway pushing. |
.env.test |
Replaces Pushgateway env var with metrics endpoint port configuration. |
.env.sample |
Documents/configures metrics endpoint host/port/path env vars. |
💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.
neSpecc
approved these changes
May 1, 2026
Kuchizu
added a commit
that referenced
this pull request
May 2, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Expose worker metrics via an HTTP
/metricsendpoint instead of Pushgateway.