AWS SQS trigger Step Functions











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Quick question: Is it possible to trigger the execution of a Step Function after an SQS message was sent?, if so, how would you specify it into the cloudformation yaml file?



Thanks in advance.










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    Quick question: Is it possible to trigger the execution of a Step Function after an SQS message was sent?, if so, how would you specify it into the cloudformation yaml file?



    Thanks in advance.










    share|improve this question
























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      down vote

      favorite
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      up vote
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      down vote

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      Quick question: Is it possible to trigger the execution of a Step Function after an SQS message was sent?, if so, how would you specify it into the cloudformation yaml file?



      Thanks in advance.










      share|improve this question













      Quick question: Is it possible to trigger the execution of a Step Function after an SQS message was sent?, if so, how would you specify it into the cloudformation yaml file?



      Thanks in advance.







      amazon-web-services python-3.6 amazon-cloudformation amazon-sqs aws-step-functions






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      asked Nov 22 at 0:27









      Carlos

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          The first think to consider is this: do you really need to use SQS to start a Step Functions state machine? Can you use API gateway instead? Or could you write your messages to a S3 bucket and use the CloudWatch events to start a state machine?



          If you must use SQS, then you will need to have a lambda function to act as a proxy. You will need to set up the queue as a lambda trigger, and you will need to write a lambda that can parse the SQS message and make the appropriate call to the Step Functions StartExecution API.



          I’m on mobile, so I can’t type up the yaml right now, but if you need it, I can try to update with it later. For now, here is detailed walkthrough of how to invoke a Step Functions state machine from Lambda (including example yaml), and here is walkthrough of how to use CloudFormation to set up SQS to trigger a Lambda.






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            The first think to consider is this: do you really need to use SQS to start a Step Functions state machine? Can you use API gateway instead? Or could you write your messages to a S3 bucket and use the CloudWatch events to start a state machine?



            If you must use SQS, then you will need to have a lambda function to act as a proxy. You will need to set up the queue as a lambda trigger, and you will need to write a lambda that can parse the SQS message and make the appropriate call to the Step Functions StartExecution API.



            I’m on mobile, so I can’t type up the yaml right now, but if you need it, I can try to update with it later. For now, here is detailed walkthrough of how to invoke a Step Functions state machine from Lambda (including example yaml), and here is walkthrough of how to use CloudFormation to set up SQS to trigger a Lambda.






            share|improve this answer

























              up vote
              0
              down vote













              The first think to consider is this: do you really need to use SQS to start a Step Functions state machine? Can you use API gateway instead? Or could you write your messages to a S3 bucket and use the CloudWatch events to start a state machine?



              If you must use SQS, then you will need to have a lambda function to act as a proxy. You will need to set up the queue as a lambda trigger, and you will need to write a lambda that can parse the SQS message and make the appropriate call to the Step Functions StartExecution API.



              I’m on mobile, so I can’t type up the yaml right now, but if you need it, I can try to update with it later. For now, here is detailed walkthrough of how to invoke a Step Functions state machine from Lambda (including example yaml), and here is walkthrough of how to use CloudFormation to set up SQS to trigger a Lambda.






              share|improve this answer























                up vote
                0
                down vote










                up vote
                0
                down vote









                The first think to consider is this: do you really need to use SQS to start a Step Functions state machine? Can you use API gateway instead? Or could you write your messages to a S3 bucket and use the CloudWatch events to start a state machine?



                If you must use SQS, then you will need to have a lambda function to act as a proxy. You will need to set up the queue as a lambda trigger, and you will need to write a lambda that can parse the SQS message and make the appropriate call to the Step Functions StartExecution API.



                I’m on mobile, so I can’t type up the yaml right now, but if you need it, I can try to update with it later. For now, here is detailed walkthrough of how to invoke a Step Functions state machine from Lambda (including example yaml), and here is walkthrough of how to use CloudFormation to set up SQS to trigger a Lambda.






                share|improve this answer












                The first think to consider is this: do you really need to use SQS to start a Step Functions state machine? Can you use API gateway instead? Or could you write your messages to a S3 bucket and use the CloudWatch events to start a state machine?



                If you must use SQS, then you will need to have a lambda function to act as a proxy. You will need to set up the queue as a lambda trigger, and you will need to write a lambda that can parse the SQS message and make the appropriate call to the Step Functions StartExecution API.



                I’m on mobile, so I can’t type up the yaml right now, but if you need it, I can try to update with it later. For now, here is detailed walkthrough of how to invoke a Step Functions state machine from Lambda (including example yaml), and here is walkthrough of how to use CloudFormation to set up SQS to trigger a Lambda.







                share|improve this answer












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                answered Nov 26 at 9:15









                Matthew Pope

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