overleaf/libraries/metrics
Jakob Ackermann 8945373715 Merge pull request #5724 from overleaf/jpa-lean-docker-build
[build_scripts] library: add a dockerignore file

GitOrigin-RevId: 229029f74024a9ca77c11fac53740d2d6ebd02ca
2021-11-09 09:04:02 +00:00
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test Merge pull request #4689 from overleaf/jpa-libraries-ci 2021-08-13 12:56:39 +00:00
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.eslintrc
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event_loop.js
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LICENSE
memory.js
mongodb.js
open_sockets.js [misc] fix collection of open sockets 2020-11-06 15:16:14 +00:00
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package.json Merge pull request #5488 from overleaf/em-refactor-logger 2021-10-28 08:04:00 +00:00
prom_wrapper.js [misc] do not register a noop sweeping interval 2021-01-12 14:20:51 +00:00
README.md Merge pull request #5246 from overleaf/bg-upgrade-logger-in-all-libraries 2021-10-29 08:03:14 +00:00
timeAsyncMethod.js
uv_threadpool_size.js

overleaf/metrics-module

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

Use:

const metrics = require('@overleaf/metrics')
metrics.initialize('myapp')

const express = require('express')
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.
  • ENABLE_TRACE_AGENT - enables @google-cloud/trace-agent on Google Cloud
  • ENABLE_DEBUG_AGENT - enables @google-cloud/debug-agent on Google Cloud
  • ENABLE_PROFILE_AGENT - enables @google-cloud/profiler on Google Cloud
  • 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