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Expose Lambda request ID and trace ID to environment variables #2035

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Expose Lambda request ID and trace ID to environment variables #2035

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3 changes: 3 additions & 0 deletions src/Runtime/LambdaRuntime.php
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Original file line number Diff line number Diff line change
Expand Up @@ -84,6 +84,9 @@ public function processNextEvent(Handler | RequestHandlerInterface | callable $h

// Expose the context in an environment variable
$this->setEnv('LAMBDA_INVOCATION_CONTEXT', json_encode($context, JSON_THROW_ON_ERROR));
// These are used for logging/tracing purposes
$this->setEnv('LAMBDA_REQUEST_ID', $context->getAwsRequestId());
$this->setEnv('_X_AMZN_TRACE_ID', $context->getTraceId());

try {
ColdStartTracker::invocationStarted();
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14 changes: 14 additions & 0 deletions tests/Runtime/LambdaRuntimeTest.php
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Expand Up @@ -431,4 +431,18 @@ public function afterInvoke(mixed ...$params): void
$this->assertStringContainsString('Invoke Error {"errorType":"Exception","errorMessage":"Invocation error","stack":', $this->getActualOutput());
$this->assertStringContainsString('Invoke Error {"errorType":"Exception","errorMessage":"This is an exception in afterInvoke","stack":', $this->getActualOutput());
}

public function test request id env variables()
{
$this->givenAnEvent([]);

$this->runtime->processNextEvent(function () use (&$requestId, &$traceId) {
$requestId = getenv('LAMBDA_REQUEST_ID');
$traceId = getenv('_X_AMZN_TRACE_ID');
return ['hello' => 'world'];
});

$this->assertSame('1', $requestId);
$this->assertSame('Root=1-67891233-abcdef012345678912345678', $traceId);
}
}
1 change: 1 addition & 0 deletions tests/RuntimeTestCase.php
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Expand Up @@ -34,6 +34,7 @@ protected function givenAnEvent(mixed $event): void
[
'lambda-runtime-aws-request-id' => '1',
'lambda-runtime-invoked-function-arn' => 'test-function-name',
'lambda-runtime-trace-id' => 'Root=1-67891233-abcdef012345678912345678',
],
json_encode($event, JSON_THROW_ON_ERROR)
),
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