overleaf/libraries/metrics
David b59326e96f Merge pull request #16873 from overleaf/dp-mongo-command-monitoring
Use mongo command monitoring to add timing metrics

GitOrigin-RevId: e7e5dd5cca1ba3802c02198ccf81058d4da3f1e7
2024-02-23 09:02:55 +00:00
..
test Merge pull request #16519 from overleaf/bg-clsi-timeouts-add-metrics 2024-01-18 09:04:19 +00:00
.dockerignore
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CHANGELOG.md
event_loop.js
http.js
index.js Merge pull request #16644 from overleaf/em-promisify-update-manager 2024-01-30 16:49:23 +00:00
initialize.js Merge pull request #15241 from overleaf/em-gcp-opentelemetry 2023-10-19 08:02:52 +00:00
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LICENSE Merge pull request #16859 from overleaf/jpa-sharelatex-cleanup 2024-02-09 09:04:11 +00:00
memory.js
mongodb.js Merge pull request #16873 from overleaf/dp-mongo-command-monitoring 2024-02-23 09:02:55 +00:00
open_sockets.js Merge pull request #13055 from overleaf/jpa-monitor-sockets-everywhere 2023-05-23 08:05:03 +00:00
package.json Merge pull request #16661 from overleaf/em-fix-tsconfig 2024-01-24 09:05:09 +00:00
prom_wrapper.js
README.md Merge pull request #15241 from overleaf/em-gcp-opentelemetry 2023-10-19 08:02:52 +00:00
timeAsyncMethod.js
tsconfig.json Merge pull request #16524 from overleaf/em-fix-typescript-backend 2024-01-17 09:03:42 +00:00
uv_threadpool_size.js

overleaf/metrics-module

Wrappers the prom-client npm module to provide Prometheus metrics at /metrics.

Use:

// Metrics must be initialized before importing anything else
require('@overleaf/metrics/initialize')

const express = require('express')
const metrics = require('@overleaf/metrics')
const app = express()
metrics.injectMetricsRoute(app)

Request logging can be enabled:

const logger = require('@overleaf/logger')
...
app.use(metrics.http.monitor(logger))

The metrics module can be configured through the following environment variables:

  • DEBUG_METRICS - enables display of debugging messages to the console.
  • GCP_OPENTELEMETRY - enables OpenTelemetry tracing for GCP
  • JAEGER_OPENTELEMETRY - enables OpenTelemetry tracing for Jaeger (in the dev environment)
  • METRICS_APP_NAME - the app label for metrics and spans
  • METRICS_COMPRESSION_LEVEL - sets the compression level for /metrics
  • STACKDRIVER_LOGGING - toggles the request logging format
  • UV_THREADPOOL_SIZE - sets the libuv thread pool size