kafka ControllerResult 源码
kafka ControllerResult 代码
文件路径：/metadata/src/main/java/org/apache/kafka/controller/ControllerResult.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.controller;
import org.apache.kafka.server.common.ApiMessageAndVersion;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;
class ControllerResult<T> {
private final List<ApiMessageAndVersion> records;
private final T response;
private final boolean isAtomic;
protected ControllerResult(List<ApiMessageAndVersion> records, T response, boolean isAtomic) {
Objects.requireNonNull(records);
this.records = records;
this.response = response;
this.isAtomic = isAtomic;
}
public List<ApiMessageAndVersion> records() {
return records;
}
public T response() {
return response;
}
public boolean isAtomic() {
return isAtomic;
}
@Override
public boolean equals(Object o) {
if (o == null || (!o.getClass().equals(getClass()))) {
return false;
}
ControllerResult other = (ControllerResult) o;
return records.equals(other.records) &&
Objects.equals(response, other.response) &&
Objects.equals(isAtomic, other.isAtomic);
}
@Override
public int hashCode() {
return Objects.hash(records, response, isAtomic);
}
@Override
public String toString() {
return String.format(
"ControllerResult(records=%s, response=%s, isAtomic=%s)",
String.join(",", records.stream().map(ApiMessageAndVersion::toString).collect(Collectors.toList())),
response,
isAtomic
);
}
public ControllerResult<T> withoutRecords() {
return new ControllerResult<>(Collections.emptyList(), response, false);
}
public static <T> ControllerResult<T> atomicOf(List<ApiMessageAndVersion> records, T response) {
return new ControllerResult<>(records, response, true);
}
public static <T> ControllerResult<T> of(List<ApiMessageAndVersion> records, T response) {
return new ControllerResult<>(records, response, false);
}
}
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