/// <summary>
/// DescribeTargetHealth 接口用来获取应用型负载均衡后端的健康检查结果。
/// </summary>
/// <param name="req">参考<see cref="DescribeTargetHealthRequest"/></param>
/// <returns>参考<see cref="DescribeTargetHealthResponse"/>实例</returns>
public async Task <DescribeTargetHealthResponse> DescribeTargetHealth(DescribeTargetHealthRequest req)
{
JsonResponseModel <DescribeTargetHealthResponse> rsp = null;
try
{
var strResp = await this.InternalRequest(req, "DescribeTargetHealth");
rsp = JsonConvert.DeserializeObject <JsonResponseModel <DescribeTargetHealthResponse> >(strResp);
}
catch (JsonSerializationException e)
{
throw new TencentCloudSDKException(e.Message);
}
return(rsp.Response);
}
public async Task <Response> Handle(SNSEvent snsRequest, CancellationToken cancellationToken = default)
{
var request = requestFactory.CreateFromSnsEvent(snsRequest);
logger.LogInformation($"Received transformed request: {JsonSerializer.Serialize(request)}");
var addresses = dnsResolver.Resolve(request.TargetDnsName).AddressList ?? new IPAddress[] { };
var targetHealthRequest = new DescribeTargetHealthRequest {
TargetGroupArn = request.TargetGroupArn
};
var targetHealthResponse = await elbClient.DescribeTargetHealthAsync(targetHealthRequest);
logger.LogInformation($"Got target health response: {JsonSerializer.Serialize(targetHealthResponse)}");
var targetHealthDescriptions = targetHealthResponse.TargetHealthDescriptions;
var healthyTargets = from target in targetHealthDescriptions where target.TargetHealth.State != TargetHealthStateEnum.Unhealthy select target.Target;
var unhealthyTargets = from target in targetHealthDescriptions where target.TargetHealth.State == TargetHealthStateEnum.Unhealthy select target.Target;
var newTargets = from address in addresses
where healthyTargets.All(target => !IPAddress.Parse(target.Id).Equals(address))
select new TargetDescription
{
Id = address.ToString(),
AvailabilityZone = "all",
Port = 80
};
await Task.WhenAll(new Task[]
{
DeregisterTargets(request.TargetGroupArn, unhealthyTargets),
RegisterTargets(request.TargetGroupArn, newTargets),
});
return(new Response
{
Success = true
});
}
/// <summary>
/// 查询后端服务下的target的健康状态
/// </summary>
/// <param name="request">请求参数信息</param>
/// <returns>请求结果信息</returns>
public async Task <DescribeTargetHealthResponse> DescribeTargetHealth(DescribeTargetHealthRequest request)
{
return(await new DescribeTargetHealthExecutor().Client(this).Execute <DescribeTargetHealthResponse, DescribeTargetHealthResult, DescribeTargetHealthRequest>(request).ConfigureAwait(false));
}
/// <summary>
/// 查询后端服务下的target的健康状态
/// </summary>
/// <param name="request">请求参数信息</param>
/// <returns>请求结果信息</returns>
public DescribeTargetHealthResponse DescribeTargetHealth(DescribeTargetHealthRequest request)
{
return(new DescribeTargetHealthExecutor().Client(this).Execute <DescribeTargetHealthResponse, DescribeTargetHealthResult, DescribeTargetHealthRequest>(request));
}
