DynamoEventSourceProps

class aws_cdk.aws_lambda_event_sources.DynamoEventSourceProps(*, starting_position, batch_size=None, enabled=None, max_batching_window=None, provisioned_poller_config=None, bisect_batch_on_error=None, filter_encryption=None, filters=None, max_record_age=None, metrics_config=None, on_failure=None, parallelization_factor=None, report_batch_item_failures=None, retry_attempts=None, tumbling_window=None)

Bases: StreamEventSourceProps

Parameters:

  • 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 DynamoEventSource - 10000 for KinesisEventSource, ManagedKafkaEventSource and 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) for Kinesis, DynamoDB, and SQS event sources, Duration.millis(500) for MSK, self-managed Kafka, and Amazon MQ.

  • provisioned_poller_config (Union[ProvisionedPollerConfig, Dict[str, Any], None]) – Configuration for provisioned pollers that read from the event source. When specified, allows control over the minimum and maximum number of pollers that can be provisioned to process events from the source. Default: - no provisioned pollers

  • bisect_batch_on_error (Optional[bool]) – If the function returns an error, split the batch in two and retry. Default: false

  • filter_encryption (Optional[IKey]) – Add Customer managed KMS key to encrypt Filter Criteria. Default: - none

  • filters (Optional[Sequence[Mapping[str, Any]]]) – Add filter criteria option. Default: - None

  • max_record_age (Optional[Duration]) – The maximum age of a record that Lambda sends to a function for processing. Valid Range: - Minimum value of 60 seconds - Maximum value of 7 days The default value is -1, which sets the maximum age to infinite. When the value is set to infinite, Lambda never discards old records. Record are valid until it expires in the event source. Default: -1

  • metrics_config (Union[MetricsConfig, Dict[str, Any], None]) – Configuration for enhanced monitoring metrics collection When specified, enables collection of additional metrics for the stream event source. Default: - Enhanced monitoring is disabled

  • on_failure (Optional[IEventSourceDlq]) – An Amazon SQS queue or Amazon SNS topic destination for discarded records. Default: - discarded records are ignored

  • parallelization_factor (Union[int, float, None]) – The number of batches to process from each shard concurrently. Valid Range: - Minimum value of 1 - Maximum value of 10 Default: 1

  • report_batch_item_failures (Optional[bool]) – Allow functions to return partially successful responses for a batch of records. Default: false

  • retry_attempts (Union[int, float, None]) – Maximum number of retry attempts Valid Range: * Minimum value of 0 * Maximum value of 10000. The default value is -1, which sets the maximum number of retries to infinite. When MaximumRetryAttempts is infinite, Lambda retries failed records until the record expires in the event source. Default: -1

  • tumbling_window (Optional[Duration]) – The size of the tumbling windows to group records sent to DynamoDB or Kinesis Valid Range: 0 - 15 minutes. Default: - None

ExampleMetadata:

infused

Example:

import aws_cdk.aws_lambda_event_sources as eventsources
import aws_cdk.aws_dynamodb as dynamodb

# fn: lambda.Function

table = dynamodb.Table(self, "Table",
    partition_key=dynamodb.Attribute(
        name="id",
        type=dynamodb.AttributeType.STRING
    ),
    stream=dynamodb.StreamViewType.NEW_IMAGE
)

fn.add_event_source(eventsources.DynamoEventSource(table,
    starting_position=lambda_.StartingPosition.LATEST,
    metrics_config=lambda.MetricsConfig(
        metrics=[lambda_.MetricType.EVENT_COUNT]
    )
))

Attributes

batch_size

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 DynamoEventSource

    • 10000 for KinesisEventSource, ManagedKafkaEventSource and SelfManagedKafkaEventSource

Default:

100

bisect_batch_on_error

If the function returns an error, split the batch in two and retry.

Default:

false

enabled

If the stream event source mapping should be enabled.

Default:

true

filter_encryption

Add Customer managed KMS key to encrypt Filter Criteria.

Default:

  • none

See:

https://docs.aws.amazon.com/kms/latest/developerguide/concepts.html#aws-managed-cmk

filters

Add filter criteria option.

Default:

  • None

max_batching_window

The maximum amount of time to gather records before invoking the function.

Maximum of Duration.minutes(5).

Default:

  • Duration.seconds(0) for Kinesis, DynamoDB, and SQS event sources, Duration.millis(500) for MSK, self-managed Kafka, and Amazon MQ.

See:

https://docs.aws.amazon.com/lambda/latest/dg/invocation-eventsourcemapping.html#invocation-eventsourcemapping-batching

max_record_age

The maximum age of a record that Lambda sends to a function for processing.

Valid Range:

  • Minimum value of 60 seconds

  • Maximum value of 7 days

The default value is -1, which sets the maximum age to infinite. When the value is set to infinite, Lambda never discards old records. Record are valid until it expires in the event source.

Default:

-1

metrics_config

Configuration for enhanced monitoring metrics collection When specified, enables collection of additional metrics for the stream event source.

Default:

  • Enhanced monitoring is disabled

on_failure

An Amazon SQS queue or Amazon SNS topic destination for discarded records.

Default:

  • discarded records are ignored

parallelization_factor

The number of batches to process from each shard concurrently.

Valid Range:

  • Minimum value of 1

  • Maximum value of 10

Default:

1

provisioned_poller_config

Configuration for provisioned pollers that read from the event source.

When specified, allows control over the minimum and maximum number of pollers that can be provisioned to process events from the source.

Default:

  • no provisioned pollers

report_batch_item_failures

Allow functions to return partially successful responses for a batch of records.

Default:

false

See:

https://docs.aws.amazon.com/lambda/latest/dg/with-ddb.html#services-ddb-batchfailurereporting

retry_attempts

  • Minimum value of 0 * Maximum value of 10000.

The default value is -1, which sets the maximum number of retries to infinite. When MaximumRetryAttempts is infinite, Lambda retries failed records until the record expires in the event source.

Default:

-1

Type:

Maximum number of retry attempts Valid Range

starting_position

Where to begin consuming the stream.

tumbling_window

0 - 15 minutes.

Default:

  • None

Type:

The size of the tumbling windows to group records sent to DynamoDB or Kinesis Valid Range