我正在使用适用于Amazon SNS的Amazon AWS
Ruby SDK,但我在使用已经注册的设备时遇到了一些问题.有时当设备再次注册时,我收到类似AWS :: SNS :: Errors :: InvalidParameter的错误无效参数：令牌原因：端点arn：aws：sns：us-east-1：****已经存在且具有相同的令牌,但不同的属性..如何检查端点是否已存在,更重要的是,如何获取给定令牌的端点？
解决方法
感谢BvdBijl的想法,我做了一个扩展方法,删除现有的一个,如果找到,然后添加它.
using System;
using System.Text.RegularExpressions;
using Amazon.SimpleNotificationService;
using Amazon.SimpleNotificationService.Model;
namespace Amazon.SimpleNotificationService
{
public static class AmazonSimpleNotificationServiceClientExtensions
{
private const string existingEndpointRegexString = "Reason: Endpoint (.+) already exists with the same Token";
private static Regex existingEndpointRegex = new Regex(existingEndpointRegexString);
public static CreatePlatformEndpointResponse CreatePlatformEndpointIdempotent(
this AmazonSimpleNotificationServiceClient client,CreatePlatformEndpointRequest request)
{
try
{
var result = client.CreatePlatformEndpoint(request);
return result;
}
catch (AmazonSimpleNotificationServiceException e)
{
if (e.ErrorCode == "InvalidParameter")
{
var match = existingEndpointRegex.Match(e.Message);
if (match.Success) {
string arn = match.Groups[1].Value;
client.DeleteEndpoint(new DeleteEndpointRequest
{
EndpointArn = arn,});
return client.CreatePlatformEndpoint(request);
}
}
throw;
}
}
}
}