| /** |
| * 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.host.aggregator; |
| |
| |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.metrics2.sink.timeline.AggregationResult; |
| import org.apache.hadoop.metrics2.sink.timeline.MetricHostAggregate; |
| import org.apache.hadoop.metrics2.sink.timeline.TimelineMetric; |
| import org.apache.hadoop.metrics2.sink.timeline.TimelineMetricWithAggregatedValues; |
| import org.apache.hadoop.metrics2.sink.timeline.TimelineMetrics; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeMap; |
| |
| /** |
| * Thread that aggregates and publishes metrics to collector on specified interval. |
| */ |
| public class AggregatedMetricsPublisher extends AbstractMetricPublisherThread { |
| |
| private Log LOG; |
| |
| public AggregatedMetricsPublisher(TimelineMetricsHolder timelineMetricsHolder, String collectorURL, int interval) { |
| super(timelineMetricsHolder, collectorURL, interval); |
| LOG = LogFactory.getLog(this.getClass()); |
| } |
| |
| /** |
| * get metrics map form @TimelineMetricsHolder |
| * @return |
| */ |
| @Override |
| protected Map<Long, TimelineMetrics> getMetricsFromCache() { |
| return timelineMetricsHolder.extractMetricsForAggregationPublishing(); |
| } |
| |
| /** |
| * Aggregates given metrics and converts them into json string that will be send to collector |
| * @param metricForAggregationValues |
| * @return |
| */ |
| @Override |
| protected String processMetrics(Map<Long, TimelineMetrics> metricForAggregationValues) { |
| HashMap<String, TimelineMetrics> nameToMetricMap = new HashMap<>(); |
| for (TimelineMetrics timelineMetrics : metricForAggregationValues.values()) { |
| for (TimelineMetric timelineMetric : timelineMetrics.getMetrics()) { |
| if (!nameToMetricMap.containsKey(timelineMetric.getMetricName())) { |
| nameToMetricMap.put(timelineMetric.getMetricName(), new TimelineMetrics()); |
| } |
| nameToMetricMap.get(timelineMetric.getMetricName()).addOrMergeTimelineMetric(timelineMetric); |
| } |
| } |
| Set<TimelineMetricWithAggregatedValues> metricAggregateMap = new HashSet<>(); |
| for (TimelineMetrics metrics : nameToMetricMap.values()) { |
| double sum = 0; |
| double max = Integer.MIN_VALUE; |
| double min = Integer.MAX_VALUE; |
| int count = 0; |
| for (TimelineMetric metric : metrics.getMetrics()) { |
| for (Double value : metric.getMetricValues().values()) { |
| sum+=value; |
| max = Math.max(max, value); |
| min = Math.min(min, value); |
| count++; |
| } |
| } |
| TimelineMetric tmpMetric = new TimelineMetric(metrics.getMetrics().get(0)); |
| tmpMetric.setMetricValues(new TreeMap<Long, Double>()); |
| metricAggregateMap.add(new TimelineMetricWithAggregatedValues(tmpMetric, new MetricHostAggregate(sum, count, 0d, max, min))); |
| } |
| String json = null; |
| try { |
| json = objectMapper.writeValueAsString(new AggregationResult(metricAggregateMap, System.currentTimeMillis())); |
| LOG.debug(json); |
| } catch (Exception e) { |
| LOG.error("Failed to convert result into json", e); |
| } |
| |
| return json; |
| } |
| } |