e27b7e996d
A number of changes here. I recommend viewing the diff with the <a href="?w=1">whitespace flag enabled</a>.
- OpenTelemetry is replaced with a custom and lightweight tracing solution.
- Three trace targets are currently supported: console, Zipkin, and NextJS.
- Tracing is now governed by environment variables rather than `--require instrument.js`.
+ `TRACE_TARGET`: one of `CONSOLE`, `ZIPKIN`, or `TELEMETRY`; defaults to `TELEMETRY` if unset or invalid.
+ `TRACE_ID`: an 8-byte hex-encoded value used as the Zipkin trace ID; if not provided, this value will be randomly generated and passed down to subprocesses.
Other sundry:
- I'm missing something, probably a setup step, with the Zipkin target. Traces are captured successfully, but you have to manually enter the Trace ID in order to view the trace - it doesn't show up in queries.
- I'm generally unhappy with [this commit](235cedcb3e). It is... untidy to provide a telemetry object via `setGlobal`, but I don't have a ready alternative. Is `distDir` strictly required when creating a new Telemetry object? I didn't dig too deep here.
As noted, there are a lot of changes, so it'd be great if a reviewer could:
- [ ] pull down the branch and try to break it
- [ ] check the Zipkin traces and identify possible regressions in the functionality
Closes #22570
Fixes #22574
45 lines
902 B
TypeScript
45 lines
902 B
TypeScript
import { randomBytes } from 'crypto'
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import fetch from 'node-fetch'
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let traceId = process.env.TRACE_ID
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if (!traceId) {
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traceId = process.env.TRACE_ID = randomBytes(8).toString('hex')
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}
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const localEndpoint = {
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serviceName: 'zipkin-query',
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ipv4: '127.0.0.1',
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port: 9411,
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}
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const zipkinUrl = `http://${localEndpoint.ipv4}:${localEndpoint.port}/api/v2/spans`
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const reportToLocalHost = (
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name: string,
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duration: number,
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timestamp: number,
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id: string,
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parentId?: string,
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attrs?: Object
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) => {
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const body = [
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{
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traceId,
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parentId,
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name,
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id,
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timestamp,
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duration,
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localEndpoint,
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tags: attrs,
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},
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]
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// We intentionally do not block on I/O here.
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fetch(zipkinUrl, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify(body),
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}).catch(() => {})
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}
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export default reportToLocalHost
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