hadoop IOStatisticsStoreBuilderImpl 源码
haddop IOStatisticsStoreBuilderImpl 代码
文件路径:/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/statistics/impl/IOStatisticsStoreBuilderImpl.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.fs.statistics.impl;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import static org.apache.hadoop.fs.statistics.StoreStatisticNames.SUFFIX_FAILURES;
import static org.apache.hadoop.fs.statistics.StoreStatisticNames.SUFFIX_MAX;
import static org.apache.hadoop.fs.statistics.StoreStatisticNames.SUFFIX_MEAN;
import static org.apache.hadoop.fs.statistics.StoreStatisticNames.SUFFIX_MIN;
/**
* Builder for an IOStatistics store..
*/
final class IOStatisticsStoreBuilderImpl implements
IOStatisticsStoreBuilder {
private final List<String> counters = new ArrayList<>();
private final List<String> gauges = new ArrayList<>();
private final List<String> minimums = new ArrayList<>();
private final List<String> maximums = new ArrayList<>();
private final List<String> meanStatistics = new ArrayList<>();
@Override
public IOStatisticsStoreBuilderImpl withCounters(final String... keys) {
counters.addAll(Arrays.asList(keys));
return this;
}
@Override
public IOStatisticsStoreBuilderImpl withGauges(final String... keys) {
gauges.addAll(Arrays.asList(keys));
return this;
}
@Override
public IOStatisticsStoreBuilderImpl withMaximums(final String... keys) {
maximums.addAll(Arrays.asList(keys));
return this;
}
@Override
public IOStatisticsStoreBuilderImpl withMinimums(final String... keys) {
minimums.addAll(Arrays.asList(keys));
return this;
}
@Override
public IOStatisticsStoreBuilderImpl withMeanStatistics(
final String... keys) {
meanStatistics.addAll(Arrays.asList(keys));
return this;
}
@Override
public IOStatisticsStoreBuilderImpl withDurationTracking(
final String... prefixes) {
for (String p : prefixes) {
withCounters(p, p + SUFFIX_FAILURES);
withMinimums(
p + SUFFIX_MIN,
p + SUFFIX_FAILURES + SUFFIX_MIN);
withMaximums(
p + SUFFIX_MAX,
p + SUFFIX_FAILURES + SUFFIX_MAX);
withMeanStatistics(
p + SUFFIX_MEAN,
p + SUFFIX_FAILURES + SUFFIX_MEAN);
}
return this;
}
@Override
public IOStatisticsStore build() {
return new IOStatisticsStoreImpl(counters, gauges, minimums,
maximums, meanStatistics);
}
}
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