CloudWatch Log
Simple event definition
This will enable your Lambda function to be called by a Log Stream.
functions:
myCloudWatchLog:
handler: myCloudWatchLog.handler
events:
- cloudwatchLog: '/aws/lambda/hello'
WARNING: If you specify several CloudWatch Log events for one AWS Lambda function you'll only see the first subscription in the AWS Lambda Web console. This is a known AWS problem but it's only graphical, you should be able to view your CloudWatch Log Group subscriptions in the CloudWatch Web console.
Specifying a filter
Here's an example how you can specify a filter rule.
For more information about the filter pattern syntax, see Filter and Pattern Syntax
functions:
myCloudWatchLog:
handler: myCloudWatchLog.handler
events:
- cloudwatchLog:
logGroup: '/aws/lambda/hello'
filter: '{$.userIdentity.type = Root}'
Example
Update your serverless.yml file as follows and run serverless deploy.
functions:
hello1:
handler: handler.hello1
events:
- cloudwatchLog: '/aws/lambda/hello1'
hello2:
handler: handler.hello2
events:
- cloudwatchLog: '/aws/lambda/hello2'
Next up, edit serverless.yml and swap out the logGroup names. After that run serverless deploy again (the deployment will fail).
functions:
hello1:
handler: handler.hello1
events:
- cloudwatchLog: '/aws/lambda/hello2'
hello2:
handler: handler.hello2
events:
- cloudwatchLog: '/aws/lambda/hello1'