Java 类com.amazonaws.services.elasticloadbalancing.model.DescribeInstanceHealthRequest 实例源码

@GET
@NoAuth
@Path("/{elbName}/instances")
public List<InstanceState> getInstancesByElb(@PathParam("elbName") String elbName) {
  if (config.isPresent()) {
    try {
      DescribeInstanceHealthRequest request = new DescribeInstanceHealthRequest(elbName);
      DescribeInstanceHealthResult result = elbClient.describeInstanceHealth(request);
      return result.getInstanceStates();
    } catch (AmazonClientException exn) {
      throw new BaragonWebException(String.format("AWS Client Error %s", exn));
    }
  } else {
    throw new BaragonWebException("ElbSync and related actions are not currently enabled");
  }
}

/**
 * Checks the instance health of the ec2 instance in the given ELB.
 */
public InstanceState describeInstanceHealth(String elbName, String ec2InstanceId)
{
  LOGGER.debug("describeInstanceHealth(elbName: " + elbName + ", ec2InstanceId: " + ec2InstanceId + ")");
  assertNonBlankArgs(elbName, ec2InstanceId);
  StopWatch stopWatch = new StopWatch();
  try
  {
    stopWatch.start();
    DescribeInstanceHealthRequest request = new DescribeInstanceHealthRequest();
    request.setLoadBalancerName(elbName);
    request.setInstances(Arrays.asList(new Instance(ec2InstanceId)));
    DescribeInstanceHealthResult result = awsElbClient.describeInstanceHealth(request);
    if (result == null || CollectionUtils.isEmpty(result.getInstanceStates()))
    {
      throw new RuntimeException("ELB '" + elbName + "' didn't match instance id '" + ec2InstanceId + "'");
    }
    else if (result.getInstanceStates().size() > 1)
    {
      LOGGER.warn("Expected 1 instance state for instance id '" + ec2InstanceId + "' in elb '" + elbName + "', found "
          + result.getInstanceStates().size());
    }
    return result.getInstanceStates().get(0);
  }
  finally
  {
    stopWatch.stop();
    LOGGER.debug("describeInstanceHealth time elapsed " + stopWatch);
  }
}

public List<InstanceState> describeInstanceHealth(String elbName, List<String> instanceIds) {
    logger.info("describe elb instance health, instanceIds={}", instanceIds);

    List<com.amazonaws.services.elasticloadbalancing.model.Instance> instances = instanceIds.stream()
                                                                                            .map(com.amazonaws.services.elasticloadbalancing.model.Instance::new)
                                                                                            .collect(Collectors.toList());

    DescribeInstanceHealthResult result = elb.describeInstanceHealth(new DescribeInstanceHealthRequest(elbName)
        .withInstances(instances));

    return result.getInstanceStates();
}

public boolean isInstanceHealthy(String instanceId, String elbName) {
  DescribeInstanceHealthRequest describeRequest = new DescribeInstanceHealthRequest(elbName);
  DescribeInstanceHealthResult result = elbClient.describeInstanceHealth(describeRequest);
  boolean instanceIsHealthy = false;
  for (InstanceState instanceState : result.getInstanceStates()) {
    if (instanceState.getState().equals("InService")) {
      if (instanceState.getInstanceId().equals(instanceId)) {
        instanceIsHealthy = true;
      }
    }
  }
  return instanceIsHealthy;
}

private boolean isLastHealthyInstance(DeregisterInstancesFromLoadBalancerRequest request) throws AmazonClientException {
  DescribeInstanceHealthRequest describeRequest = new DescribeInstanceHealthRequest(request.getLoadBalancerName());
  DescribeInstanceHealthResult result = elbClient.describeInstanceHealth(describeRequest);
  boolean instanceIsHealthy = false;
  int healthyCount = 0;
  for (InstanceState instanceState : result.getInstanceStates()) {
    if (instanceState.getState().equals("InService")) {
      healthyCount++;
      if (instanceState.getInstanceId().equals(request.getInstances().get(0).getInstanceId())) { //Will only ever be one instance per request
        instanceIsHealthy = true;
      }
    }
  }
  return (instanceIsHealthy && healthyCount == 1);
}

/**
 * Sets up the mock elb client to return a fakeResult for the describe-instance-health call.
 */
private void setupMock(DescribeInstanceHealthResult fakeResult)
{
  when(mockELBClient.describeInstanceHealth(any(DescribeInstanceHealthRequest.class))).thenReturn(fakeResult);
}