| /** |
| * 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.yarn.server.applicationhistoryservice.metrics.timeline.function; |
| |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeMap; |
| import java.util.TreeSet; |
| |
| import org.apache.hadoop.metrics2.sink.timeline.TimelineMetric; |
| import org.apache.hadoop.metrics2.sink.timeline.TimelineMetrics; |
| |
| import com.google.common.base.Joiner; |
| |
| public abstract class AbstractTimelineMetricsSeriesAggregateFunction |
| implements TimelineMetricsSeriesAggregateFunction { |
| |
| @Override |
| public TimelineMetric apply(TimelineMetrics timelineMetrics) { |
| Set<String> metricNameSet = new TreeSet<>(); |
| Set<String> hostNameSet = new TreeSet<>(); |
| Set<String> appIdSet = new TreeSet<>(); |
| Set<String> instanceIdSet = new TreeSet<>(); |
| TreeMap<Long, List<Double>> metricValues = new TreeMap<>(); |
| |
| for (TimelineMetric timelineMetric : timelineMetrics.getMetrics()) { |
| metricNameSet.add(timelineMetric.getMetricName()); |
| addToSetOnlyNotNull(hostNameSet, timelineMetric.getHostName()); |
| addToSetOnlyNotNull(appIdSet, timelineMetric.getAppId()); |
| addToSetOnlyNotNull(instanceIdSet, timelineMetric.getInstanceId()); |
| |
| for (Map.Entry<Long, Double> metricValue : timelineMetric.getMetricValues().entrySet()) { |
| Long timestamp = metricValue.getKey(); |
| Double value = metricValue.getValue(); |
| if (!metricValues.containsKey(timestamp)) { |
| metricValues.put(timestamp, new LinkedList<Double>()); |
| } |
| metricValues.get(timestamp).add(value); |
| } |
| } |
| |
| TreeMap<Long, Double> aggregatedMetricValues = new TreeMap<>(); |
| for (Map.Entry<Long, List<Double>> metricValue : metricValues.entrySet()) { |
| List<Double> values = metricValue.getValue(); |
| if (values.size() == 0) { |
| throw new IllegalArgumentException("count of values should be more than 0"); |
| } |
| aggregatedMetricValues.put(metricValue.getKey(), applyFunction(values)); |
| } |
| |
| TimelineMetric timelineMetric = new TimelineMetric(); |
| timelineMetric.setMetricName(getMetricName(metricNameSet.iterator())); |
| timelineMetric.setHostName(joinStringsWithComma(hostNameSet.iterator())); |
| timelineMetric.setAppId(joinStringsWithComma(appIdSet.iterator())); |
| timelineMetric.setInstanceId(joinStringsWithComma(instanceIdSet.iterator())); |
| if (aggregatedMetricValues.size() > 0) { |
| timelineMetric.setStartTime(aggregatedMetricValues.firstKey()); |
| } |
| timelineMetric.setMetricValues(aggregatedMetricValues); |
| return timelineMetric; |
| } |
| |
| protected String getMetricName(Iterator<String> metricNames) { |
| return getFunctionName() + "(" + Joiner.on(",").join(metricNames) + ")"; |
| } |
| |
| protected String joinStringsWithComma(Iterator<String> hostNames) { |
| return Joiner.on(",").join(hostNames); |
| } |
| |
| protected abstract Double applyFunction(List<Double> values); |
| protected abstract String getFunctionName(); |
| |
| private void addToSetOnlyNotNull(Set<String> set, String value) { |
| if (value != null) { |
| set.add(value); |
| } |
| } |
| |
| } |