hadoop AbstractMetricsRecord 源码
haddop AbstractMetricsRecord 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/AbstractMetricsRecord.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.hadoop.metrics2.impl;
import org.apache.hadoop.thirdparty.com.google.common.base.Objects;
import org.apache.hadoop.thirdparty.com.google.common.collect.Iterables;
import org.apache.hadoop.metrics2.MetricsRecord;
import java.util.StringJoiner;
abstract class AbstractMetricsRecord implements MetricsRecord {
@Override public boolean equals(Object obj) {
if (obj instanceof MetricsRecord) {
final MetricsRecord other = (MetricsRecord) obj;
return Objects.equal(timestamp(), other.timestamp()) &&
Objects.equal(name(), other.name()) &&
Objects.equal(description(), other.description()) &&
Objects.equal(tags(), other.tags()) &&
Iterables.elementsEqual(metrics(), other.metrics());
}
return false;
}
// Should make sense most of the time when the record is used as a key
@Override public int hashCode() {
return Objects.hashCode(name(), description(), tags());
}
@Override public String toString() {
return new StringJoiner(", ", this.getClass().getSimpleName() + "{", "}")
.add("timestamp=" + timestamp())
.add("name=" + name())
.add("description=" + description())
.add("tags=" + tags())
.add("metrics=" + Iterables.toString(metrics()))
.toString();
}
}
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