content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * Licensed 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 com.alibaba.csp.sentinel.node.metric;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  import java.util.Map.Entry;
  import java.util.TreeMap;
  
  import com.alibaba.csp.sentinel.Constants;
  import com.alibaba.csp.sentinel.config.SentinelConfig;
  import com.alibaba.csp.sentinel.log.RecordLog;
  import com.alibaba.csp.sentinel.node.ClusterNode;
  import com.alibaba.csp.sentinel.slotchain.ResourceWrapper;
  import com.alibaba.csp.sentinel.slots.clusterbuilder.ClusterBuilderSlot;
  
  /**
   * @author jialiang.linjl
   */
  public class MetricTimerListener implements Runnable {
  
      private static final MetricWriter metricWriter = new MetricWriter(SentinelConfig.singleMetricFileSize(),
          SentinelConfig.totalMetricFileCount());
  
      @Override
      public void run() {
          Map<Long, List<MetricNode>> maps = new TreeMap<>();
          for (Entry<ResourceWrapper, ClusterNode> e : ClusterBuilderSlot.getClusterNodeMap().entrySet()) {
              ClusterNode node = e.getValue();
              Map<Long, MetricNode> metrics = node.metrics();
              aggregate(maps, metrics, node);
          }
          aggregate(maps, Constants.ENTRY_NODE.metrics(), Constants.ENTRY_NODE);
          if (!maps.isEmpty()) {
              for (Entry<Long, List<MetricNode>> entry : maps.entrySet()) {
                  try {
                      metricWriter.write(entry.getKey(), entry.getValue());
                  } catch (Exception e) {
                      RecordLog.warn("[MetricTimerListener] Write metric error", e);
                  }
              }
          }
      }
  
      private void aggregate(Map<Long, List<MetricNode>> maps, Map<Long, MetricNode> metrics, ClusterNode node) {
          for (Entry<Long, MetricNode> entry : metrics.entrySet()) {
              long time = entry.getKey();
              MetricNode metricNode = entry.getValue();
              metricNode.setResource(node.getName());
              metricNode.setClassification(node.getResourceType());
              maps.computeIfAbsent(time, k -> new ArrayList<MetricNode>());
              List<MetricNode> nodes = maps.get(time);
              nodes.add(entry.getValue());
          }
      }
  
  }
  