我正在使用适用于Amazon SNS的Amazon AWS Ruby SDK,但我在使用已注册的设备时遇到了一些问题。有时,当设备再次注册时,我会收到类似AWS::SNS::Errors::InvalidParameter Invalid parameter: Token Reason: Endpoint arn:aws:sns:us-east-1:**** already exists with the same Token, but different attributes.
的错误。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?
答案 0 :(得分:11)
归功于BvdBijl的想法,我做了一个扩展方法,删除现有的扩展方法,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;
}
}
}
}
答案 1 :(得分:0)
似乎amazone解决了这个问题。 我正在使用RoR并且在尝试注册和现有GCM代码时曾经遇到同样的问题我收到了错误消息
"AWS::SNS::Errors::InvalidParameter Invalid parameter: Token Reason: Endpoint arn:aws:sns:us-east-1:**** already exists with the same Token, but different attributes."
虽然我使用了相同(空)的属性。现在,当我发送现有的GCM代码(具有与原始代码相同的属性)时,我得到端点arn而不是错误消息。
答案 2 :(得分:0)
ListEndpointsByPlatformApplication只返回100个端点,你必须使用nextToken才能获得更多。这是我的实施。
public void deleteEndpoint(string token, string PlatformApplicationArn)
{
ListEndpointsByPlatformApplicationRequest listRequest = new ListEndpointsByPlatformApplicationRequest();
listRequest.PlatformApplicationArn = PlatformApplicationArn;
Logger.Info("Deleting endpoint with token -> " + token);
var list = snsClient.ListEndpointsByPlatformApplication(listRequest);
do
{
foreach (var x in list.Endpoints.Where(x => x.Attributes["Token"] == token))
{
snsClient.DeleteEndpoint(new DeleteEndpointRequest() { EndpointArn = x.EndpointArn });
Logger.Info("Endpoint removed-> " + x.EndpointArn);
return;
}
listRequest.NextToken = list.NextToken;
list = snsClient.ListEndpointsByPlatformApplication(listRequest);
}
while (list.NextToken != null);
}