io.axual.client.config

Enum DeliveryStrategy

java.lang.Object

java.lang.Enum<DeliveryStrategy>

io.axual.client.config.DeliveryStrategy

All Implemented Interfaces:

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

public enum DeliveryStrategy
extends java.lang.Enum<DeliveryStrategy>

Enum Constant Summary

Enum Constants

Enum Constant and Description
AT_LEAST_ONCE The AT_LEAST_ONCE strategy will retry to deliver messages upon technical failures, potentially leading to message duplication in certain situations.
AT_MOST_ONCE The AT_MOST_ONCE strategy will try to deliver messages once (or less) and continue processing in all failure cases.

Method Summary

Modifier and Type	Method and Description
static DeliveryStrategy	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static DeliveryStrategy[]	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

AT_MOST_ONCE

public static final DeliveryStrategy AT_MOST_ONCE

The AT_MOST_ONCE strategy will try to deliver messages once (or less) and continue processing in all failure cases. In case something fails the message will be lost. For Producers this means that messages will be sent to Kafka only once. For Consumers this means skipping to the end of a new PartitionOffset upon subscribing.

AT_LEAST_ONCE

public static final DeliveryStrategy AT_LEAST_ONCE

The AT_LEAST_ONCE strategy will retry to deliver messages upon technical failures, potentially leading to message duplication in certain situations. Duplication is considered to be a lesser evil by applications that adopt this strategy. Be sure to be idempotent in your application when adopting this strategy. For Producers this strategy ensures successful delivery to Kafka and the message is replicated to other node in the cluster. For Consumers this strategy jumps to the beginning of the stream if the consumer's group id did not commit any offset beforehand.

Method Detail

values

public static DeliveryStrategy[] 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 (DeliveryStrategy c : DeliveryStrategy.values())
    System.out.println(c);

Returns:

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

valueOf

public static DeliveryStrategy 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