In the following example, we specify that the
compute function should be triggered whenever there are messages in the given SQS Queue.
The ARN for the queue can be specified as a string, the reference to the ARN of a resource by logical ID, or the import of an ARN that was exported by a different service or CloudFormation stack.
sqs event will hook up your existing SQS Queue to a Lambda function. Serverless won't create a new queue for you.
IMPORTANT: AWS is not supporting FIFO queue to trigger Lambda function so your queue(s) must be a standard queue.
functions: compute: handler: handler.compute events: - sqs: arn:aws:sqs:region:XXXXXX:MyFirstQueue - sqs: arn: Fn::GetAtt: - MySecondQueue - Arn - sqs: arn: Fn::ImportValue: MyExportedQueueArnId - sqs: arn: Fn::Join: - ":" - - arn - aws - sqs - Ref: AWS::Region - Ref: AWS::AccountId - MyOtherQueue
For the SQS event integration, you can set the
batchSize, which effects how many SQS messages will be included in a single Lambda invocation. The default
batchSize is 10, and the max
batchSize is 10.
functions: preprocess: handler: handler.preprocess events: - sqs: arn: arn:aws:sqs:region:XXXXXX:myQueue batchSize: 10