kafka FinalizedControllerFeatures 源码
kafka FinalizedControllerFeatures 代码
文件路径：/metadata/src/main/java/org/apache/kafka/metadata/FinalizedControllerFeatures.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.metadata;
import java.util.Collections;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
/**
* A map of feature names to their supported versions.
*/
public class FinalizedControllerFeatures {
private final Map<String, Short> featureMap;
private final long epoch;
public FinalizedControllerFeatures(Map<String, Short> featureMap, long epoch) {
this.featureMap = Collections.unmodifiableMap(featureMap);
this.epoch = epoch;
}
public Optional<Short> get(String name) {
return Optional.ofNullable(featureMap.get(name));
}
public Set<String> featureNames() {
return featureMap.keySet();
}
public long epoch() {
return epoch;
}
@Override
public int hashCode() {
return Objects.hash(featureMap, epoch);
}
@Override
public boolean equals(Object o) {
if (!(o instanceof FinalizedControllerFeatures)) return false;
FinalizedControllerFeatures other = (FinalizedControllerFeatures) o;
return featureMap.equals(other.featureMap) && epoch == other.epoch;
}
@Override
public String toString() {
StringBuilder bld = new StringBuilder();
bld.append("{");
bld.append("featureMap=").append(featureMap.toString());
bld.append(", epoch=").append(epoch);
bld.append("}");
return bld.toString();
}
}
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