CODEWITHSUNDEEP
amazon-cloudwatchaws-step-functionsamazon-cloudwatchlogs
aamyrrkhan
aamyrrkhan

Reputation: 101

Sending exception message from Step-functions to aws cloudwatch event logs

When AWS Step-function fails, the output message is null and same is passed to cloudwatch event logs, but the error message in exception is not passed to cloudwatch events log. How can I send that exception message to cloudwatch events log so that I can process it downstream.

Upvotes: 2

Views: 1501

Answers (2)

aamyrrkhan
aamyrrkhan

Reputation: 101

I ended up using below boto3.client(‘stepfunctions’) and then using get_execution_history() method to retrieve the cause and error.

Upvotes: 0

adamwong
adamwong

Reputation: 1194

CloudWatch Events and CloudWatch Logs are two different services. If you enable logging at ERROR, FATAL, or ALL log level, you'll see the errors in CloudWatch Logs. See https://docs.aws.amazon.com/step-functions/latest/dg/cw-logs.html

I assume you're referring to CloudWatch Events/EventBridge here. The events Step Functions emits to CloudWatch Events contain the result of the DescribeExecution API. It doesn't include errors, just the input and output of the execution. The error and cause that caused the execution to fail is in the executionFailedEventDetails field of last event in the execution history. You can retrieve the last event by calling GetExecutionHistory with "reverseOrder": true and "maxResults": 1.

Upvotes: 1

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