bug: Event rule target fails to execute when SF with input transformers #11970
Description
Is there an existing issue for this?
- I have searched the existing issues
Current Behavior
When there is an event rule setup that has a step function configured with target as well as input transformers, it consistently fails to invoke the step function due to a KeyError trying to access id.
Example event rule definition (edited to obfuscate actual properties/names):
FetchCustomerDataEventRule:
Type: AWS::Events::Rule
Properties:
EventBusName:
Fn::ImportValue: ${env:STAGE}-customer-event-bus
EventPattern: '{ "detail": { "event": [ "KEY_FOR_EVENT_TYPE" ] } }'
Name: TriggerTheStepFunction-${opt:stage}
RoleArn: ${self:provider.role}
Targets:
- Arn:
Ref: SomeStepFunctionArn${opt:stage}
RoleArn: ${self:provider.role}
Id: this-is-a-dummy-target
InputTransformer:
InputPathsMap:
customerId: '$.detail.properties.customerId'
InputTemplate: '{ "customerId": <customerId> }'
Error thrown:
{"ErrorCode": "TargetDeliveryFailure", "ErrorMessage": "Failed to deliver to target this-is-a-dummy-target: 'id'"}
If adding a dummy value for ID in input template it succeeds, ie:
InputTemplate: '{ "id": "dummy_value", "customerId": <customerId> }'
Expected Behavior
Step function execution ID should fallback to a longuid when the input is transformed and original event ID is not available. Should not require mandatory fields in the input template for a target.
How are you starting LocalStack?
With a docker-compose file
Steps To Reproduce
How are you starting localstack (e.g., bin/localstack command, arguments, or docker-compose.yml)
docker compose up localstack
Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)
const eventBridge = new EventBridge({ region: env.AWS_REGION, credentials: fromEnv(), logger: console })
...
eventBridge.putEvents({
Entries: [
{
EventBusName: `${STAGE}-customer-event-bus`,
Source: source,
DetailType: eventType,
Detail: JSON.stringify(eventData),
},
],
});
Environment
- OS: MacOS 14.7.1 (Apple M3 Chip)
- LocalStack:
LocalStack version: 4.0.3
LocalStack Docker image sha256:17c2f79ca4e1f804eb912291a19713d4134806325ef0d21d4c1053161dfa72d0
LocalStack build date: 2024-11-29
LocalStack build git hash: aa795ed1cAnything else?
No response