ManagedKafkaEventSource

class aws_cdk.aws_lambda_event_sources.ManagedKafkaEventSource(*, cluster_arn, topic, secret=None, starting_position, batch_size=None, enabled=None, max_batching_window=None)

Bases: StreamEventSource

Use a MSK cluster as a streaming source for AWS Lambda.

ExampleMetadata:

infused

Example:

from aws_cdk.aws_secretsmanager import Secret
from aws_cdk.aws_lambda_event_sources import ManagedKafkaEventSource

# my_function: lambda.Function


# Your MSK cluster arn
cluster_arn = "arn:aws:kafka:us-east-1:0123456789019:cluster/SalesCluster/abcd1234-abcd-cafe-abab-9876543210ab-4"

# The Kafka topic you want to subscribe to
topic = "some-cool-topic"

# The secret that allows access to your MSK cluster
# You still have to make sure that it is associated with your cluster as described in the documentation
secret = Secret(self, "Secret", secret_name="AmazonMSK_KafkaSecret")
my_function.add_event_source(ManagedKafkaEventSource(
    cluster_arn=cluster_arn,
    topic=topic,
    secret=secret,
    batch_size=100,  # default
    starting_position=lambda_.StartingPosition.TRIM_HORIZON
))
Parameters:

  • cluster_arn (str) – An MSK cluster construct.

  • topic (str) – The Kafka topic to subscribe to.

  • secret (Optional[ISecret]) – The secret with the Kafka credentials, see https://docs.aws.amazon.com/msk/latest/developerguide/msk-password.html for details This field is required if your Kafka brokers are accessed over the Internet. Default: none

  • starting_position (StartingPosition) – Where to begin consuming the stream.

  • batch_size (Union[int, float, None]) – The largest number of records that AWS Lambda will retrieve from your event source at the time of invoking your function. Your function receives an event with all the retrieved records. Valid Range: - Minimum value of 1 - Maximum value of: - 1000 for {@link DynamoEventSource} - 10000 for {@link KinesisEventSource}, {@link ManagedKafkaEventSource} and {@link SelfManagedKafkaEventSource} Default: 100

  • enabled (Optional[bool]) – If the stream event source mapping should be enabled. Default: true

  • max_batching_window (Optional[Duration]) – The maximum amount of time to gather records before invoking the function. Maximum of Duration.minutes(5) Default: Duration.seconds(0)

Methods

bind(target)

Called by lambda.addEventSource to allow the event source to bind to this function.

Parameters:

target (IFunction) –

Return type:

None

Attributes

event_source_mapping_id

The identifier for this EventSourceMapping.