BaseStreamEventSourceProps Struct
The set of properties for streaming event sources shared by Dynamo, Kinesis and Kafka.
Example
ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as cdk from 'aws-cdk-lib';
import { aws_lambda as lambda } from 'aws-cdk-lib';
import { aws_lambda_event_sources as lambda_event_sources } from 'aws-cdk-lib';
const baseStreamEventSourceProps: lambda_event_sources.BaseStreamEventSourceProps = {
startingPosition: lambda.StartingPosition.TRIM_HORIZON,
// the properties below are optional
batchSize: 123,
enabled: false,
maxBatchingWindow: cdk.Duration.minutes(30),
provisionedPollerConfig: {
maximumPollers: 123,
minimumPollers: 123,
pollerGroupName: 'pollerGroupName',
},
};
Properties
batchSizeoptionalnumberbatch_sizeoptionalint | floatbatchSizeoptionalNumberBatchSizeoptionaldoubleBatchSizeoptional*float64= 100#The largest number of records that AWS Lambda will retrieve from your event source at the time of invoking your function.
notes
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,ManagedKafkaEventSourceandSelfManagedKafkaEventSource
- 1000 for
enabledoptionalbooleanenabledoptionalboolenabledoptionalBooleanEnabledoptionalboolEnabledoptional*bool= true#If the stream event source mapping should be enabled.
maxBatchingWindowoptionalDurationmax_batching_windowoptionalDurationmaxBatchingWindowoptionalDurationMaxBatchingWindowoptionalDurationMaxBatchingWindowoptionalDuration#The maximum amount of time to gather records before invoking the function.
Default: Duration.seconds(0) for Kinesis, DynamoDB, and SQS event sources, Duration.millis(500) for MSK, self-managed Kafka, and Amazon MQ.
Maximum of Duration.minutes(5).
provisionedPollerConfigoptionalProvisionedPollerConfigprovisioned_poller_configoptionalProvisionedPollerConfigprovisionedPollerConfigoptionalProvisionedPollerConfigProvisionedPollerConfigoptionalProvisionedPollerConfigProvisionedPollerConfigoptionalProvisionedPollerConfig#Configuration for provisioned pollers that read from the event source.
Default: no provisioned pollers
When specified, allows control over the minimum and maximum number of pollers that can be provisioned to process events from the source.
startingPositionStartingPositionstarting_positionStartingPositionstartingPositionStartingPositionStartingPositionStartingPositionStartingPositionStartingPositionrequired#Where to begin consuming the stream.