software.amazon.awscdk.services.lambda

Enum StartingPosition

java.lang.Object

java.lang.Enum<StartingPosition>

software.amazon.awscdk.services.lambda.StartingPosition

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<StartingPosition>

@Generated(value="jsii-pacmak/1.73.0 (build 6faeda3)",
           date="2023-01-31T18:36:54.635Z")
public enum StartingPosition
extends java.lang.Enum<StartingPosition>

The position in the DynamoDB, Kinesis or MSK stream where AWS Lambda should start reading.

Example:

 import software.amazon.awscdk.services.secretsmanager.Secret;
 import software.amazon.awscdk.services.lambda.eventsources.SelfManagedKafkaEventSource;
 // The secret that allows access to your self hosted Kafka cluster
 Secret secret;
 Function myFunction;
 // The list of Kafka brokers
 String[] bootstrapServers = List.of("kafka-broker:9092");
 // The Kafka topic you want to subscribe to
 String topic = "some-cool-topic";
 myFunction.addEventSource(SelfManagedKafkaEventSource.Builder.create()
         .bootstrapServers(bootstrapServers)
         .topic(topic)
         .secret(secret)
         .batchSize(100) // default
         .startingPosition(StartingPosition.TRIM_HORIZON)
         .build());
 

Enum Constant Summary

Enum Constants

Enum Constant and Description
LATEST Start reading just after the most recent record in the shard, so that you always read the most recent data in the shard.
TRIM_HORIZON Start reading at the last untrimmed record in the shard in the system, which is the oldest data record in the shard.

Method Summary

Modifier and Type	Method and Description
static StartingPosition	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static StartingPosition[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

TRIM_HORIZON

public static final StartingPosition TRIM_HORIZON

Start reading at the last untrimmed record in the shard in the system, which is the oldest data record in the shard.

LATEST

public static final StartingPosition LATEST

Start reading just after the most recent record in the shard, so that you always read the most recent data in the shard.

Method Detail

values

public static StartingPosition[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (StartingPosition c : StartingPosition.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static StartingPosition valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null