content: /**
   * 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 com.alibaba.jstorm.common.metric;
  
  import com.alibaba.jstorm.metric.KVSerializable;
  import com.alibaba.jstorm.metric.MetricUtils;
  import com.alibaba.jstorm.utils.JStormUtils;
  
  import java.util.Date;
  
  /**
   * @author wange
   * @since 15/7/16
   */
  public class TopologyHistory implements KVSerializable {
  
      private long id;
      private String clusterName;
      private String topologyName;
      private String topologyId;
      private double sampleRate;
      private Date start;
      private Date end;
  
      public TopologyHistory() {
      }
  
      public TopologyHistory(String clusterName, String topologyId) {
          this.clusterName = clusterName;
          this.topologyId = topologyId;
      }
  
      public long getId() {
          return id;
      }
  
      public void setId(long id) {
          this.id = id;
      }
  
      public String getClusterName() {
          return clusterName;
      }
  
      public void setClusterName(String clusterName) {
          this.clusterName = clusterName;
      }
  
      public String getTopologyName() {
          return topologyName;
      }
  
      public void setTopologyName(String topologyName) {
          this.topologyName = topologyName;
      }
  
      public String getTopologyId() {
          return topologyId;
      }
  
      public void setTopologyId(String topologyId) {
          this.topologyId = topologyId;
      }
  
      public Date getStart() {
          return start;
      }
  
      public void setStart(Date start) {
          this.start = start;
      }
  
      public Date getEnd() {
          return end;
      }
  
      public void setEnd(Date end) {
          this.end = end;
      }
  
      public Date getTime() {
          return start != null ? start : end;
      }
  
      public String getTag() {
          return start != null ? KVSerializable.START : KVSerializable.END;
      }
  
      public double getSampleRate() {
          return sampleRate;
      }
  
      public void setSampleRate(Double sampleRate) {
          if (sampleRate == null) {
              this.sampleRate = 1.0d;
          } else {
              this.sampleRate = sampleRate;
          }
      }
  
      /**
       * key: clusterName + topologyName + time
       */
      @Override
      public byte[] getKey() {
          return MetricUtils.concat2(clusterName, topologyName, getTime().getTime()).getBytes();
  
      }
  
      /**
       * value: topologyId + type: S/E
       */
      @Override
      public byte[] getValue() {
          return MetricUtils.concat2(topologyId, getTag(), sampleRate).getBytes();
      }
  
      @Override
      public Object fromKV(byte[] key, byte[] value) {
          String[] keyParts = new String(key).split(MetricUtils.DELIM);
          long time = 0;
          if (keyParts.length >= 3) {
              this.clusterName = keyParts[0];
              this.topologyName = keyParts[1];
              time = Long.valueOf(keyParts[2]);
          }
  
          String[] valueParts = new String(value).split(MetricUtils.DELIM);
          if (valueParts.length >= 3) {
              this.topologyId = valueParts[0];
              String tag = valueParts[1];
              if (tag.equals(KVSerializable.START)) {
                  this.start = new Date(time);
              } else {
                  this.end = new Date(time);
              }
              this.sampleRate = JStormUtils.parseDouble(valueParts[2], 0.1d);
          }
  
          return this;
      }
  
      public String getIdentity(){
          return MetricUtils.concat2(clusterName, topologyId);
      }
  
      public void merge(TopologyHistory history){
          if (history.start != null && this.start == null){
              this.start = history.start;
          }
          if (history.end != null && this.end == null){
              this.end = history.end;
          }
      }
  }
  