/**
   * 从待执行队列中获取所有有资格执行的作业上下文.
   *
   * @param ineligibleJobContexts 无资格执行的作业上下文
   * @return 有资格执行的作业上下文集合
   */
  public Collection<JobContext> getAllEligibleJobContexts(
      final Collection<JobContext> ineligibleJobContexts) {
    if (!regCenter.isExisted(ReadyNode.ROOT)) {
      return Collections.emptyList();
    }
    Collection<String> ineligibleJobNames =
        Collections2.transform(
            ineligibleJobContexts,
            new Function<JobContext, String>() {

              @Override
              public String apply(final JobContext input) {
                return input.getJobConfig().getJobName();
              }
            });
    List<String> jobNames = regCenter.getChildrenKeys(ReadyNode.ROOT);
    List<JobContext> result = new ArrayList<>(jobNames.size());
    for (String each : jobNames) {
      if (ineligibleJobNames.contains(each)) {
        continue;
      }
      Optional<CloudJobConfiguration> jobConfig = configService.load(each);
      if (!jobConfig.isPresent()) {
        regCenter.remove(ReadyNode.getReadyJobNodePath(each));
        continue;
      }
      if (!runningService.isJobRunning(each)
          || JobExecutionType.DAEMON == jobConfig.get().getJobExecutionType()) {
        result.add(JobContext.from(jobConfig.get(), ExecutionType.READY));
      }
    }
    return result;
  }
 @Test
 public void assertGetAllServersBriefInfo() {
   when(regCenter.getChildrenKeys("/")).thenReturn(Arrays.asList("test_job1", "test_job2"));
   when(regCenter.getChildrenKeys("/test_job1/servers")).thenReturn(Arrays.asList("ip1", "ip2"));
   when(regCenter.getChildrenKeys("/test_job2/servers")).thenReturn(Arrays.asList("ip3", "ip4"));
   when(regCenter.get("/test_job1/servers/ip1/hostName")).thenReturn("host1");
   when(regCenter.get("/test_job1/servers/ip2/hostName")).thenReturn("host2");
   when(regCenter.get("/test_job2/servers/ip3/hostName")).thenReturn("host3");
   when(regCenter.get("/test_job2/servers/ip4/hostName")).thenReturn("host4");
   when(regCenter.isExisted("/test_job1/servers/ip1/shutdown")).thenReturn(false);
   when(regCenter.isExisted("/test_job1/servers/ip1/status")).thenReturn(true);
   when(regCenter.isExisted("/test_job1/servers/ip2/shutdown")).thenReturn(true);
   when(regCenter.isExisted("/test_job2/servers/ip3/shutdown")).thenReturn(false);
   when(regCenter.isExisted("/test_job2/servers/ip3/status")).thenReturn(false);
   when(regCenter.isExisted("/test_job2/servers/ip4/shutdown")).thenReturn(false);
   when(regCenter.isExisted("/test_job2/servers/ip4/status")).thenReturn(true);
   int i = 0;
   for (ServerBriefInfo each : serverStatisticsAPI.getAllServersBriefInfo()) {
     i++;
     assertThat(each.getServerIp(), is("ip" + i));
     assertThat(each.getServerHostName(), is("host" + i));
     switch (i) {
       case 1:
         assertThat(each.getStatus(), is(ServerBriefInfo.ServerBriefStatus.OK));
         break;
       case 2:
         assertThat(each.getStatus(), is(ServerBriefInfo.ServerBriefStatus.ALL_CRASHED));
         break;
       case 3:
         assertThat(each.getStatus(), is(ServerBriefInfo.ServerBriefStatus.ALL_CRASHED));
         break;
       case 4:
         assertThat(each.getStatus(), is(ServerBriefInfo.ServerBriefStatus.OK));
         break;
       default:
         fail();
     }
   }
 }
 @Test
 public void assertGetJobs() {
   when(regCenter.getChildrenKeys("/"))
       .thenReturn(Arrays.asList("test_job1", "test_job2", "test_job3"));
   when(regCenter.isExisted("/test_job1/servers/localhost")).thenReturn(true);
   when(regCenter.isExisted("/test_job2/servers/localhost")).thenReturn(true);
   when(regCenter.isExisted("/test_job3/servers/localhost")).thenReturn(false);
   when(regCenter.get("/test_job1/servers/localhost/hostName")).thenReturn("localhost");
   when(regCenter.get("/test_job2/servers/localhost/hostName")).thenReturn("localhost");
   when(regCenter.get("/test_job1/servers/localhost/sharding")).thenReturn("0,1");
   when(regCenter.get("/test_job2/servers/localhost/sharding")).thenReturn("2");
   when(regCenter.get("/test_job1/servers/localhost/status")).thenReturn("RUNNING");
   when(regCenter.get("/test_job2/servers/localhost/status")).thenReturn("RUNNING");
   when(regCenter.isExisted("/test_job1/servers/localhost/disabled")).thenReturn(false);
   when(regCenter.isExisted("/test_job2/servers/localhost/disabled")).thenReturn(false);
   when(regCenter.isExisted("/test_job1/servers/localhost/paused")).thenReturn(false);
   when(regCenter.isExisted("/test_job2/servers/localhost/paused")).thenReturn(false);
   when(regCenter.isExisted("/test_job1/servers/localhost/shutdown")).thenReturn(false);
   when(regCenter.isExisted("/test_job2/servers/localhost/shutdown")).thenReturn(false);
   int i = 0;
   for (ServerInfo each : serverStatisticsAPI.getJobs("localhost")) {
     i++;
     assertThat(each.getJobName(), is("test_job" + i));
     assertThat(each.getIp(), is("localhost"));
     assertThat(each.getHostName(), is("localhost"));
     assertThat(each.getStatus(), is(ServerInfo.ServerStatus.RUNNING));
     switch (i) {
       case 1:
         assertThat(each.getSharding(), is("0,1"));
         break;
       case 2:
         assertThat(each.getSharding(), is("2"));
         break;
       default:
         fail();
     }
   }
 }