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42 changes: 32 additions & 10 deletions tracing/index.ts
Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,26 @@ export interface TelemetryInfo {
ctx: Context;
}

function createProcedureAttributes(
kind: ValidProcType,
serviceName: string,
procedureName: string,
streamId: string,
) {
return {
component: 'river',
'rpc.system': 'river',
'rpc.service': serviceName,
'rpc.method': procedureName,
'river.method.kind': kind,
'river.method.service': serviceName,
'river.method.name': procedureName,
'river.rpc.kind': kind,
'river.rpc.streaming': kind !== 'rpc',
'river.streamId': streamId,
};
}

export function getPropagationContext(
ctx: Context,
): PropagationContext | undefined {
Expand Down Expand Up @@ -101,11 +121,12 @@ export function createProcTelemetryInfo(
`river.client.${serviceName}.${procedureName}`,
{
attributes: {
component: 'river',
'river.method.kind': kind,
'river.method.service': serviceName,
'river.method.name': procedureName,
'river.streamId': streamId,
...createProcedureAttributes(
kind,
serviceName,
procedureName,
streamId,
),
'span.kind': 'client',
},
links: [{ context: session.telemetry.span.spanContext() }],
Expand Down Expand Up @@ -153,11 +174,12 @@ export function createHandlerSpan<Fn extends (span: Span) => unknown>(
`river.server.${serviceName}.${procedureName}`,
{
attributes: {
component: 'river',
'river.method.kind': kind,
'river.method.service': serviceName,
'river.method.name': procedureName,
'river.streamId': streamId,
...createProcedureAttributes(
kind,
serviceName,
procedureName,
streamId,
),
'span.kind': 'server',
},
links: [{ context: session.telemetry.span.spanContext() }],
Expand Down
65 changes: 64 additions & 1 deletion tracing/tracing.test.ts
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,12 @@ import {
} from '@opentelemetry/sdk-trace-base';
import { W3CTraceContextPropagator } from '@opentelemetry/core';
import { AsyncHooksContextManager } from '@opentelemetry/context-async-hooks';
import { createSessionTelemetryInfo, getPropagationContext } from './index';
import {
createHandlerSpan,
createProcTelemetryInfo,
createSessionTelemetryInfo,
getPropagationContext,
} from './index';
import { testMatrix } from '../testUtil/fixtures/matrix';
import {
cleanupTransports,
Expand Down Expand Up @@ -65,6 +70,64 @@ describe('Basic tracing tests', () => {
) as Span,
).toBeTruthy();
});

test('procedure spans include rpc classification attributes', () => {
spanExporter.reset();
const tracer = trace.getTracer('test');
const session = dummySession();

const { span: clientSpan } = createProcTelemetryInfo(
tracer,
session,
'subscription',
'example',
'watch',
'client-stream-id',
);
clientSpan.end();

createHandlerSpan(
tracer,
session,
'stream',
'example',
'chat',
'server-stream-id',
undefined,
(span) => {
span.end();
},
);

const spans = spanExporter.getFinishedSpans();
const clientProcSpan = spans.find(
(span) => span.name === 'river.client.example.watch',
);
const serverProcSpan = spans.find(
(span) => span.name === 'river.server.example.chat',
);

expect(clientProcSpan?.attributes).toMatchObject({
'rpc.system': 'river',
'rpc.service': 'example',
'rpc.method': 'watch',
'river.method.kind': 'subscription',
'river.rpc.kind': 'subscription',
'river.rpc.streaming': true,
'river.streamId': 'client-stream-id',
'span.kind': 'client',
});
expect(serverProcSpan?.attributes).toMatchObject({
'rpc.system': 'river',
'rpc.service': 'example',
'rpc.method': 'chat',
'river.method.kind': 'stream',
'river.rpc.kind': 'stream',
'river.rpc.streaming': true,
'river.streamId': 'server-stream-id',
'span.kind': 'server',
});
});
});

describe.each(testMatrix())(
Expand Down
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