This serverless app publishes AWS CloudWatch logs to another Lambda function based on a subscription filter. It does this by extracting the information from a CloudWatch log event and sending a JSON array of strings with information from the logs.

1. Create an AWS account if you do not already have one and login
2. Go to the app's page on the Serverless Application Repository and click "Deploy"
3. Provide the required app parameters (see parameter details below) and click "Deploy"

Pass in a function name either as a reference parameter from another stack or resource or by supplying a name.

You can find the name of the log group by navigating to CloudWatch logs on the AWS console. You can also pass it in as a parameter from another stack or another resource (e.g. default lambda log group names are /aws/lambda/{lambda-function-name}).

CloudWatch logs allow you to filter logs based on a pattern. For more information, see the AWS Documentation.

1. DestinationFunctionName (required) - Name of the function to which this application will send log messages
2. LogGroupName (required) - Log group to listen to (has to be in same account and region)
3. FilterPattern (optional) - Pattern for filtering log events. Default: ERROR
4. LogLevel (optional) - Log level for Lambda function logging, e.g., ERROR, INFO, DEBUG, etc. Default: INFO

1. LogsToLambdaName - Lambda function name.
2. LogsToLambdaArn - Lambda function ARN.

This code is made available under the MIT license. See the LICENSE file.