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fix: redis instrumentation loses context when using callbacks #580

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merged 8 commits into from Aug 5, 2021
Merged

fix: redis instrumentation loses context when using callbacks #580

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66044df
fix: redis instrumentation loses context when using callbacks
aspectom Jul 19, 2021
c479e46
fix: rename test
aspectom Jul 19, 2021
5fe0bc2
fix: merge new test into existing describe
aspectom Jul 19, 2021
89d8384
fix: refactor context.with as requested
aspectom Jul 19, 2021
860d515
fix: remove redundant callbackThis const
aspectom Jul 19, 2021
d4c24fe
fix: move originalContext to inside if
aspectom Jul 20, 2021
62d8430
Merge branch 'main' into fix-redis-instrumentation-callbacks
dyladan Jul 28, 2021
52e90d9
Merge branch 'main' into fix-redis-instrumentation-callbacks
obecny Aug 4, 2021
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8 changes: 7 additions & 1 deletion plugins/node/opentelemetry-instrumentation-redis/src/utils.ts
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Expand Up @@ -127,6 +127,7 @@ export const getTracedInternalSendCommand = (

const originalCallback = arguments[0].callback;
if (originalCallback) {
const originalContext = context.active();
(arguments[0] as RedisCommand).callback = function callback<T>(
this: unknown,
err: Error | null,
Expand All @@ -146,7 +147,12 @@ export const getTracedInternalSendCommand = (
}

endSpan(span, err);
return originalCallback.apply(this, arguments);
return context.with(
originalContext,
originalCallback,
this,
...arguments
);
};
}
try {
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10 changes: 10 additions & 0 deletions plugins/node/opentelemetry-instrumentation-redis/test/redis.test.ts
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Expand Up @@ -212,6 +212,16 @@ describe('redis@2.x', () => {
});
});
});

it('should invoke callback with original command context', () => {
const rootSpan = tracer.startSpan('test span');
context.with(trace.setSpan(context.active(), rootSpan), () => {
client.set('callbacksTestKey', 'value', () => {
const activeSpan = trace.getSpan(context.active());
assert.strictEqual(activeSpan, rootSpan);
});
});
});
});

describe('Removing instrumentation', () => {
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