kafka Reconfigurable 源码
kafka Reconfigurable 代码
文件路径：/clients/src/main/java/org/apache/kafka/common/Reconfigurable.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.kafka.common;
import org.apache.kafka.common.config.ConfigException;
import java.util.Map;
import java.util.Set;
/**
* Interface for reconfigurable classes that support dynamic configuration.
*/
public interface Reconfigurable extends Configurable {
/**
* Returns the names of configs that may be reconfigured.
*/
Set<String> reconfigurableConfigs();
/**
* Validates the provided configuration. The provided map contains
* all configs including any reconfigurable configs that may be different
* from the initial configuration. Reconfiguration will be not performed
* if this method throws any exception.
* @throws ConfigException if the provided configs are not valid. The exception
* message from ConfigException will be returned to the client in
* the AlterConfigs response.
*/
void validateReconfiguration(Map<String, ?> configs) throws ConfigException;
/**
* Reconfigures this instance with the given key-value pairs. The provided
* map contains all configs including any reconfigurable configs that
* may have changed since the object was initially configured using
* {@link Configurable#configure(Map)}. This method will only be invoked if
* the configs have passed validation using {@link #validateReconfiguration(Map)}.
*/
void reconfigure(Map<String, ?> configs);
}
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