LambdaFunction

class aws_cdk.aws_events_targets.LambdaFunction(handler, *, event=None, dead_letter_queue=None, max_event_age=None, retry_attempts=None)

Bases: object

Use an AWS Lambda function as an event rule target.

ExampleMetadata:: infused

Example:

import aws_cdk.aws_lambda as lambda_


fn = lambda_.Function(self, "MyFunc",
    runtime=lambda_.Runtime.NODEJS_LATEST,
    handler="index.handler",
    code=lambda_.Code.from_inline("exports.handler = handler.toString()")
)

rule = events.Rule(self, "rule",
    event_pattern=events.EventPattern(
        source=["aws.ec2"]
    )
)

queue = sqs.Queue(self, "Queue")

rule.add_target(targets.LambdaFunction(fn,
    dead_letter_queue=queue,  # Optional: add a dead letter queue
    max_event_age=Duration.hours(2),  # Optional: set the maxEventAge retry policy
    retry_attempts=2
))

Parameters:

handler (IFunction) –
event (Optional[RuleTargetInput]) – The event to send to the Lambda. This will be the payload sent to the Lambda Function. Default: the entire EventBridge event
dead_letter_queue (Optional[IQueue]) – The SQS queue to be used as deadLetterQueue. Check out the considerations for using a dead-letter queue. The events not successfully delivered are automatically retried for a specified period of time, depending on the retry policy of the target. If an event is not delivered before all retry attempts are exhausted, it will be sent to the dead letter queue. Default: - no dead-letter queue
max_event_age (Optional[Duration]) – The maximum age of a request that Lambda sends to a function for processing. Minimum value of 60. Maximum value of 86400. Default: Duration.hours(24)
retry_attempts (Union[int, float, None]) – The maximum number of times to retry when the function returns an error. Minimum value of 0. Maximum value of 185. Default: 185

Methods

bind(rule, _id=None)

Returns a RuleTarget that can be used to trigger this Lambda as a result from an EventBridge event.

Parameters:

rule (IRule) –
_id (Optional[str]) –

Return type:

RuleTargetConfig