org.apache.kafka.server.policy

Interface AlterConfigPolicy

All Superinterfaces:

java.lang.AutoCloseable, Configurable

public interface AlterConfigPolicy
extends Configurable, java.lang.AutoCloseable

An interface for enforcing a policy on alter configs requests.

Common use cases are requiring that the replication factor, min.insync.replicas and/or retention settings for a topic remain within an allowable range.

If alter.config.policy.class.name is defined, Kafka will create an instance of the specified class using the default constructor and will then pass the broker configs to its configure() method. During broker shutdown, the close() method will be invoked so that resources can be released (if necessary).

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	AlterConfigPolicy.RequestMetadata Class containing the create request parameters.

Method Summary

Modifier and Type	Method and Description
void	validate(AlterConfigPolicy.RequestMetadata requestMetadata) Validate the request parameters and throw a PolicyViolationException with a suitable error message if the alter configs request parameters for the provided resource do not satisfy this policy.

Methods inherited from interface org.apache.kafka.common.Configurable

configure

Methods inherited from interface java.lang.AutoCloseable

close

Method Detail

validate

void validate(AlterConfigPolicy.RequestMetadata requestMetadata)
       throws PolicyViolationException

Validate the request parameters and throw a PolicyViolationException with a suitable error message if the alter configs request parameters for the provided resource do not satisfy this policy. Clients will receive the POLICY_VIOLATION error code along with the exception's message. Note that validation failure only affects the relevant resource, other resources in the request will still be processed.

Parameters:

requestMetadata - the alter configs request parameters for the provided resource (topic is the only resource type whose configs can be updated currently).

Throws:

PolicyViolationException - if the request parameters do not satisfy this policy.