enum EventSourceMappingLogLevel

Language	Type name
.NET	`Amazon.CDK.AWS.Lambda.EventSourceMappingLogLevel`
Go	`github.com/aws/aws-cdk-go/awscdk/v2/awslambda#EventSourceMappingLogLevel`
Java	`software.amazon.awscdk.services.lambda.EventSourceMappingLogLevel`
Python	`aws_cdk.aws_lambda.EventSourceMappingLogLevel`
TypeScript (source)	`aws-cdk-lib` » `aws_lambda` » `EventSourceMappingLogLevel`

The log level for the event source mapping poller.

Controls the verbosity of logs generated by the polling infrastructure. Different log levels provide varying amounts of detail:

INFO: Standard operational information suitable for production monitoring
DEBUG: Detailed diagnostic information for development and troubleshooting
WARN: Warning messages and potential issues that don't prevent normal operation

These logs are separate from your Lambda function's application logs and focus on the event source mapping's internal operations such as connection management, polling behavior, and infrastructure-level error conditions.

// Configure INFO level logging for production monitoring let func: lambda.IFunction; const eventSourceMapping = func.addEventSourceMapping(eventSourceMappingName, { logLevel: lambda.EventSourceMappingLogLevel.INFO });

// Configure DEBUG level logging for detailed troubleshooting let func: lambda.IFunction; const eventSourceMapping = func.addEventSourceMapping(eventSourceMappingName, { logLevel: lambda.EventSourceMappingLogLevel.DEBUG });

Example

import { ManagedKafkaEventSource } from 'aws-cdk-lib/aws-lambda-event-sources';

// Your MSK cluster arn
const clusterArn = 'arn:aws:kafka:us-east-1:0123456789019:cluster/SalesCluster/abcd1234-abcd-cafe-abab-9876543210ab-4';

declare const myFunction: lambda.Function;

// Configure INFO level logging for production monitoring
myFunction.addEventSource(new ManagedKafkaEventSource({
  clusterArn,
  topic: 'production-events',
  startingPosition: lambda.StartingPosition.LATEST,
  // Provisioned mode is required for observability features
  provisionedPollerConfig: {
    minimumPollers: 1,
    maximumPollers: 5,
  },
  logLevel: lambda.EventSourceMappingLogLevel.INFO
}));

Members

Name	Description
INFO	Messages that record the normal operation of your poller.
DEBUG	Detailed information for poller debugging.
WARN	Messages about potential errors that may lead to unexpected behavior if unaddressed.

INFO

Messages that record the normal operation of your poller.

DEBUG

Detailed information for poller debugging.

WARN

Messages about potential errors that may lead to unexpected behavior if unaddressed.

AWS CDK