matrix-public-archive/server
Eric Eastwood 36925cd603
Add test to make sure the archive doesn't fail when event for event relation is missing and not included in list of provided events (#43)
Add test to make sure the archive doesn't fail when event for event relation is missing and not included in list of provided events. Like if someone is replying to an event that was from long ago out of our range.

In the case of missing relations, Hydrogen does `_loadContextEntryNotInTimeline` because it can't find the event locally which throws an `uncaughtException`. Before https://github.com/matrix-org/matrix-public-archive/pull/51, the `uncaughtException` killed the Hydrogen `child_process` before it could pass back the HTML. Now this PR mainly just adds a test to make sure it works.
```
TypeError: Cannot read properties of undefined (reading 'storeNames')
    at TimelineReader.readById (hydrogen-web\target\lib-build\hydrogen.cjs.js:12483:33)
    at Timeline._getEventFromStorage (hydrogen-web\target\lib-build\hydrogen.cjs.js:12762:46)
    at Timeline._loadContextEntryNotInTimeline (hydrogen-web\target\lib-build\hydrogen.cjs.js:12747:35)
    at Timeline._loadContextEntriesWhereNeeded (hydrogen-web\target\lib-build\hydrogen.cjs.js:12741:14)
    at Timeline.addEntries (hydrogen-web\target\lib-build\hydrogen.cjs.js:12699:10)
    at mountHydrogen (4-hydrogen-vm-render-script.js:204:12)
    at 4-hydrogen-vm-render-script.js:353:1
    at Script.runInContext (node:vm:139:12)
    at _renderHydrogenToStringUnsafe (matrix-public-archive\server\hydrogen-render\3-render-hydrogen-to-string-unsafe.js:102:41)
    at async process.<anonymous> (matrix-public-archive\server\hydrogen-render\2-render-hydrogen-to-string-fork-script.js:18:27)
```
2022-08-29 19:42:18 -05:00
..
hydrogen-render Add test to make sure the archive doesn't fail when event for event relation is missing and not included in list of provided events (#43) 2022-08-29 19:42:18 -05:00
lib Make the `child_process` error catching more robust (`uncaughtException`) (#51) 2022-08-29 19:13:56 -05:00
routes Make the `child_process` error catching more robust (`uncaughtException`) (#51) 2022-08-29 19:13:56 -05:00
tracing Manually instrument some archive logic (#44) 2022-08-29 14:13:13 -05:00
README.md Add available Jaeger port (#48) 2022-08-29 14:08:15 -05:00
ensure-room-joined.js Add test for joining a new federated room (#31) 2022-08-29 18:56:31 -05:00
fetch-events-in-range.js Add test for joining a new federated room (#31) 2022-08-29 18:56:31 -05:00
fetch-room-data.js Manually instrument some archive logic (#44) 2022-08-29 14:13:13 -05:00
server.js Enable tracing by config so we can enable from argv, env variable, or config file (#41) 2022-07-14 11:26:53 -05:00
start-dev.js OpenTelemetry tracing so we can see spans where the app is taking time (#27) 2022-07-14 11:08:50 -05:00

README.md

Tracing

Run the app with the OpenTelemetry tracing.

npm run start -- --tracing
# or
npm run start-dev -- --tracing

Manually:

node --require './server/tracing.js' server/server.js

Traces are made up of many spans. Each span defines a traceId which it is associated with.

Viewing traces in Jaeger

via https://www.jaegertracing.io/docs/1.35/getting-started/

docker run -d --name jaeger \
  -e COLLECTOR_ZIPKIN_HOST_PORT=:9411 \
  -e COLLECTOR_OTLP_ENABLED=true \
  -p 6831:6831/udp \
  -p 6832:6832/udp \
  -p 5778:5778 \
  -p 5775:5775/udp \
  -p 16686:16686 \
  -p 4317:4317 \
  -p 4318:4318 \
  -p 14250:14250 \
  -p 14268:14268 \
  -p 14269:14269 \
  -p 9411:9411 \
  jaegertracing/all-in-one:1.35
Port Protocol Component Function
6831 UDP agent accept jaeger.thrift over Thrift-compact protocol (used by most SDKs)
6832 UDP agent accept jaeger.thrift over Thrift-binary protocol (used by Node.js SDK)
5775 UDP agent (deprecated) accept zipkin.thrift over compact Thrift protocol (used by legacy clients only)
5778 HTTP agent serve configs (sampling, etc.)
16686 HTTP query serve frontend
4317 HTTP collector accept OpenTelemetry Protocol (OTLP) over gRPC, if enabled
4318 HTTP collector accept OpenTelemetry Protocol (OTLP) over HTTP, if enabled
14268 HTTP collector accept jaeger.thrift directly from clients
14250 HTTP collector accept model.proto
9411 HTTP collector Zipkin compatible endpoint (optional)

With Service Performance Monitoring (SPM)