kafka AlterConfigOp 源码
kafka AlterConfigOp 代码
文件路径:/clients/src/main/java/org/apache/kafka/clients/admin/AlterConfigOp.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.clients.admin;
import org.apache.kafka.common.annotation.InterfaceStability;
import java.util.Arrays;
import java.util.Collections;
import java.util.Map;
import java.util.Objects;
import java.util.function.Function;
import java.util.stream.Collectors;
/**
* A class representing a alter configuration entry containing name, value and operation type.
*
* The API of this class is evolving, see {@link Admin} for details.
*/
@InterfaceStability.Evolving
public class AlterConfigOp {
public enum OpType {
/**
* Set the value of the configuration entry.
*/
SET((byte) 0),
/**
* Revert the configuration entry to the default value (possibly null).
*/
DELETE((byte) 1),
/**
* (For list-type configuration entries only.) Add the specified values to the
* current value of the configuration entry. If the configuration value has not been set,
* adds to the default value.
*/
APPEND((byte) 2),
/**
* (For list-type configuration entries only.) Removes the specified values from the current
* value of the configuration entry. It is legal to remove values that are not currently in the
* configuration entry. Removing all entries from the current configuration value leaves an empty
* list and does NOT revert to the default value of the entry.
*/
SUBTRACT((byte) 3);
private static final Map<Byte, OpType> OP_TYPES = Collections.unmodifiableMap(
Arrays.stream(values()).collect(Collectors.toMap(OpType::id, Function.identity()))
);
private final byte id;
OpType(final byte id) {
this.id = id;
}
public byte id() {
return id;
}
public static OpType forId(final byte id) {
return OP_TYPES.get(id);
}
}
private final ConfigEntry configEntry;
private final OpType opType;
public AlterConfigOp(ConfigEntry configEntry, OpType operationType) {
this.configEntry = configEntry;
this.opType = operationType;
}
public ConfigEntry configEntry() {
return configEntry;
};
public OpType opType() {
return opType;
};
@Override
public boolean equals(final Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
final AlterConfigOp that = (AlterConfigOp) o;
return opType == that.opType &&
Objects.equals(configEntry, that.configEntry);
}
@Override
public int hashCode() {
return Objects.hash(opType, configEntry);
}
@Override
public String toString() {
return "AlterConfigOp{" +
"opType=" + opType +
", configEntry=" + configEntry +
'}';
}
}
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