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fix(lambda-event-sources): event source property maxConcurrency is not token-aware #27797

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merged 4 commits into from
Nov 20, 2023
Merged

fix(lambda-event-sources): event source property maxConcurrency is not token-aware #27797

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83c0d0b
fix(lambda-event-sources): event source property maxConcurrency is no…
rahman Nov 1, 2023
84f1c9c
Merge branch 'main' into max-concurrency-token
scanlonp Nov 20, 2023
5e1dfcb
Merge branch 'main' into max-concurrency-token
mergify[bot] Nov 20, 2023
c219a3b
Merge branch 'main' into max-concurrency-token
mergify[bot] Nov 20, 2023
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2 changes: 1 addition & 1 deletion packages/aws-cdk-lib/aws-lambda/lib/event-source-mapping.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -338,7 +338,7 @@ export class EventSourceMapping extends cdk.Resource implements IEventSourceMapp
throw new Error(`maxBatchingWindow cannot be over 300 seconds, got ${props.maxBatchingWindow.toSeconds()}`);
}

if (props.maxConcurrency && (props.maxConcurrency < 2 || props.maxConcurrency > 1000)) {
if (props.maxConcurrency && !cdk.Token.isUnresolved(props.maxConcurrency) && (props.maxConcurrency < 2 || props.maxConcurrency > 1000)) {
throw new Error('maxConcurrency must be between 2 and 1000 concurrent instances');
}

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8 changes: 8 additions & 0 deletions packages/aws-cdk-lib/aws-lambda/test/event-source-mapping.test.ts
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Expand Up @@ -60,6 +60,14 @@ describe('event source mapping', () => {
})).toThrow(/maxConcurrency must be between 2 and 1000 concurrent instances/);
});

test('does not throw if maxConcurrency is a token', () => {
expect(() => new EventSourceMapping(stack, 'test', {
target: fn,
eventSourceArn: '',
maxConcurrency: cdk.Token.asNumber({ Ref: 'abc' }),
})).not.toThrow();
});

test('maxConcurrency appears in stack', () => {
new EventSourceMapping(stack, 'test', {
target: fn,
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