亚马逊AWS SNS：我如何订阅SNS主题从iOS的？ [英] Amazon AWS SNS: How do i subscribe to SNS topic from iOS?

问题描述

首先，我发现了同样的问题<一href="http://stackoverflow.com/questions/26974852/amazon-aws-how-do-i-subscribe-an-endpoint-to-sns-topic">here,但它不工作...也许AWS SDK的变化还是别的什么，我也不知道为什么......我想订阅SNS的话题从我的iOS应用。我想从这个问题的答案，code做到这一点，我试图改变摆脱错误的：

  AWSSNS * SNS = [AWSSNS defaultSNS]

    AWSSNSCreatePlatformEndpointInput * endpointRequest = [AWSSNSCreatePlatformEndpointInput新]

    endpointRequest.platformApplicationArn = @ARN：AWS：SNS：美国东部-1：753780999999：应用程序/ APNS_SANDBOX / MyAppDevelopment;
    endpointRequest.token = [个体经营de​​viceTokenAsString：deviceToken]。

    [[[SNS createPlatformApplication：endpointRequest] continueWithSuccessBlock：^ ID（AWSTask *任务）{

        AWSSNSCreateEndpointResponse *响应= task.result;

        AWSSNSSubscribeInput * subscribeRequest = [AWSSNSSubscribeInput新]

        subscribeRequest.endpoint = response.endpointArn;
        subscribeRequest.protocols = @应用程序;
        subscribeRequest.topicArn = @ARN：AWS：SNS：美国东部-1：753780999999：MyAppDevelopingTest;

        返回[SNS订阅：subscribeRequest]。

    }] continueWithBlock：^ ID（AWSTask *任务）{

        如果（task.cancelled）{
            的NSLog（@任务取消）;
        }

        否则，如果（task.error）{
            的NSLog（@错误发生：[％@]，task.error）;
        }

        其他 {
            的NSLog（@成功）;
        }

        回零;

    }];
 

但我得到的错误：

 发生错误：错误域= com.amazonaws.AWSSNSErrorDomain code = 0的操作无法完成（com.amazonaws.AWSSNSErrorDomain错误0。）检测到的UserInfo = 0x17ee0950 {类型=发件人，邮件= 3验证错误：在名称值null未能满足约束条件：成员不能为null;在属性null值未能满足约束条件：成员不能为null;在平台价值空未能满足约束条件：成员不能为空，__TEXT =（
    \ N，
    \ N，
    \ N，
    \ N
），code = ValidationError}]
 

为什么要这样呢？为什么应用程序后，资源剪切/那是正确的？除了这个我不明白的地方我应该把deviceToken？ 我真的需要帮助！在此先感谢？

我的Cognito作用是：

  {
    版本：2012年10月17日，
    声明： [
        {
            效果：允许，
            行动： [
                SNS：CreatePlatformEndpoint
                SNS：订阅，
                SNS：CreatePlatformApplication
                SNS：*
            ]
            资源：
                阿尔恩：AWS：SNS：*
            ]
        }
    ]
}
 

我公司采用最新的AWS SDK：

 安装AWSCognito 2.2.1（是2.2.0）
安装AWSCore 2.2.1（是2.2.0）
安装AWSSNS 2.2.1（是2.2.0）
 

解决方案

抱歉，不幸的是你复制code，其中包括一个错字：

  createPlatformApplication：endpointRequest
 

应该是：

  createPlatformEndpoint：endpointRequest
 

该方法CreatePlatformApplication是不是在你原有的政策允许的。一旦你允许的SNS：*，呼叫被允许通过该服务，但该请求未包括所需要的参数CreatePlatformApplication，因此ValidationError。在您的原始邮件的修剪ARN也是缺乏CreatePlatformApplication参数的结果。

First of all I found the same question here, but it doesn't work... Maybe AWS SDK changes or something else, I don't know why... I want to subscribe to SNS topic from my iOS app. I am trying to do it with code from that answer, which I tried to change to get rid of errors:

AWSSNS *sns = [AWSSNS defaultSNS];

    AWSSNSCreatePlatformEndpointInput *endpointRequest = [AWSSNSCreatePlatformEndpointInput new];

    endpointRequest.platformApplicationArn = @"arn:aws:sns:us-east-1:753780999999:app/APNS_SANDBOX/MyAppDevelopment";
    endpointRequest.token = [self deviceTokenAsString:deviceToken]; 

    [[[sns createPlatformApplication:endpointRequest] continueWithSuccessBlock:^id(AWSTask *task) {

        AWSSNSCreateEndpointResponse *response = task.result;

        AWSSNSSubscribeInput *subscribeRequest = [AWSSNSSubscribeInput new];

        subscribeRequest.endpoint = response.endpointArn;
        subscribeRequest.protocols = @"application";
        subscribeRequest.topicArn = @"arn:aws:sns:us-east-1:753780999999:MyAppDevelopingTest";

        return [sns subscribe:subscribeRequest];

    }] continueWithBlock:^id(AWSTask *task) {

        if (task.cancelled) {
            NSLog(@"Task cancelled");
        }

        else if (task.error) {
            NSLog(@"Error occurred: [%@]", task.error);
        }

        else {
            NSLog(@"Success");
        }

        return nil;

    }];

But I get the error:

Error occurred: [Error Domain=com.amazonaws.AWSSNSErrorDomain Code=0 "The operation couldn’t be completed. (com.amazonaws.AWSSNSErrorDomain error 0.)" UserInfo=0x17ee0950 {Type=Sender, Message=3 validation errors detected: Value null at 'name' failed to satisfy constraint: Member must not be null; Value null at 'attributes' failed to satisfy constraint: Member must not be null; Value null at 'platform' failed to satisfy constraint: Member must not be null, __text=(
    "\n    ",
    "\n    ",
    "\n    ",
    "\n  "
), Code=ValidationError}]

Why so? Why does the resource cut after app/ is it ok? Beside this I don't understand where I should put deviceToken? I really need help! Thanks in advance?

My Cognito role is:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "sns:CreatePlatformEndpoint",
                "sns:Subscribe",
                "sns:CreatePlatformApplication",
                "sns:*"
            ],
            "Resource": [
                "arn:aws:sns:*"
            ]
        }
    ]
}

I am using the latest AWS SDK:

Installing AWSCognito 2.2.1 (was 2.2.0)
Installing AWSCore 2.2.1 (was 2.2.0)
Installing AWSSNS 2.2.1 (was 2.2.0)

解决方案

Sorry, unfortunately you copied code that included a typo:

createPlatformApplication:endpointRequest

Should be:

createPlatformEndpoint:endpointRequest

The method CreatePlatformApplication was not allowed in your original policy. Once you allowed sns:*, the call was allowed by the service, but the request didn't include the required parameters for CreatePlatformApplication, hence the ValidationError. The trimmed ARN in your original message is also a result of lack of parameters for CreatePlatformApplication.

这篇关于亚马逊AWS SNS：我如何订阅SNS主题从iOS的？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！