/*
    * Copyright 2011 Vincent Behar
    *
    * 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 org.rundeck.api.parser;
  
  import java.util.Date;
  import org.apache.commons.lang.StringUtils;
  import org.dom4j.Node;
  import org.rundeck.api.domain.RundeckSystemInfo;
  
  /**
   * Parser for a single {@link RundeckSystemInfo}
   * 
   * @author Vincent Behar
   */
  public class SystemInfoParser extends BaseXpathParser<RundeckSystemInfo> {
  
  
      public SystemInfoParser(final String xpath) {
          super(xpath);
      }
  
      @Override
      public RundeckSystemInfo parse(Node infoNode) {
          RundeckSystemInfo info = new RundeckSystemInfo();
  
          String timestamp = StringUtils.trimToNull(infoNode.valueOf("timestamp/@epoch"));
          if (timestamp != null) {
              info.setDate(new Date(Long.valueOf(timestamp)));
          }
          info.setVersion(StringUtils.trimToNull(infoNode.valueOf("rundeck/version")));
          info.setBuild(StringUtils.trimToNull(infoNode.valueOf("rundeck/build")));
          info.setNode(StringUtils.trimToNull(infoNode.valueOf("rundeck/node")));
          info.setBaseDir(StringUtils.trimToNull(infoNode.valueOf("rundeck/base")));
          info.setOsArch(StringUtils.trimToNull(infoNode.valueOf("os/arch")));
          info.setOsName(StringUtils.trimToNull(infoNode.valueOf("os/name")));
          info.setOsVersion(StringUtils.trimToNull(infoNode.valueOf("os/version")));
          info.setJvmName(StringUtils.trimToNull(infoNode.valueOf("jvm/name")));
          info.setJvmVendor(StringUtils.trimToNull(infoNode.valueOf("jvm/vendor")));
          info.setJvmVersion(StringUtils.trimToNull(infoNode.valueOf("jvm/version")));
          String startDate = StringUtils.trimToNull(infoNode.valueOf("stats/uptime/since/@epoch"));
          if (startDate != null) {
              info.setStartDate(new Date(Long.valueOf(startDate)));
          }
          info.setUptimeInMillis(Long.valueOf(infoNode.valueOf("stats/uptime/@duration")));
          info.setCpuLoadAverage(StringUtils.trimToNull(infoNode.valueOf("stats/cpu/loadAverage")));
          if (info.getCpuLoadAverage() != null) {
              info.setCpuLoadAverage(info.getCpuLoadAverage() + " %");
          }
          info.setMaxMemoryInBytes(Long.valueOf(infoNode.valueOf("stats/memory/max")));
          info.setFreeMemoryInBytes(Long.valueOf(infoNode.valueOf("stats/memory/free")));
          info.setTotalMemoryInBytes(Long.valueOf(infoNode.valueOf("stats/memory/total")));
          info.setRunningJobs(Integer.valueOf(infoNode.valueOf("stats/scheduler/running")));
          info.setActiveThreads(Integer.valueOf(infoNode.valueOf("stats/threads/active")));
  
          return info;
      }
  }