如何訂閱React Native（Android）中的AWS SNS主題？

Question

我試圖與AWS-SDK-反應本機模塊：

https://github.com/awslabs/aws-sdk-react-native

配置了一段時間，但由於這個環節，我可以即列出主題：

https://github.com/awslabs/aws-sdk-react-native/issues/35

https://github.com/awslabs/aws-sdk-react-native/blob/master/SNS/IntegrationTests/SNSTests.js

該測試包括一個示例如何訂閱獲取電子郵件，但不知道如何在應用程序中獲取通知。我不知道如何獲得platformEndpoint，PlatformApplicationArn和deviceToken。

endPoint = sns.createPlatformEndpoint({ 
    PlatformApplicationArn: '{APPLICATION_ARN}', 
    Token: '{DEVICE_TOKEN}' 
}) 
... 
var subscribeRequest= { 
    "Protocol":"application", 
    "TopicArn":topicARN, 
    "Endpoint":endPoint 
} 
try{ 
    await AWSSNS.Subscribe(subscribeRequest); 
}catch(e){ 
    console.error(e); 
    shouldResolve = false; 
    return shouldResolve; 
} 

有沒有這方面的樣本？ 我也在尋找一個認證樣本。 使用Firebase會更容易嗎？

感謝

Answer 1

我已經使用過GCM SNS發送通知。下面是我通過假設你已經從AWS React Native SDK建立GCM並添加需要的庫去的步驟：

首先從AWS創建SNS應用：

然後，你需要通過Cognito創建聯合身份AWS服務。這是從移動應用程序將設備令牌發送到AWS SNS應用程序所必需的。選擇Manage Federated Identities

然後創建您的池，不要忘記檢查Enable Access to unauthenticated identities

當你創建你需要爲池unauthenticated和authenticated角色創建IAM角色池。 AWS將幫助您爲此創建新角色，但您需要轉到IAM Roles菜單並將AmazonSNSFullAccess添加到創建的角色中，否則您將無法從移動應用發送設備令牌。

做這些步驟後，您將使用Amazon的陣營原生SDK能夠把你的設備令牌。我寫了一個輔助類用於發送令牌AWS SNS如下建議：

class AWSUtility { 

    constructor() { 
    const region = "us-west-1"; //change it with your region 
    const IDENTITY_POOL_ID = "pool id created from Federated Identities" 
    AWSCognitoCredentials.initWithOptions({region, identity_pool_id: IDENTITY_POOL_ID}); 
    AWSSNS.initWithOptions({region}); 
    } 

    addTokenToAWSSNS(token, snsEndpointARN) { 
    const applicationArn = "change with SNS application Amazon resource name"; 
    return Promise.try(() => { 
     if (!snsEndpointARN) { 
     return this.createPlatformEndpoint(token, applicationArn); 
     } else { 
     return AWSSNS.GetEndpointAttributes({EndpointArn: snsEndpointARN}) 
      .then((result) => { 
      const {Attributes = {}} = result; 
      const {Token, Enabled} = Attributes; 
      const updateNeeded = Token !== token || Enabled !== 'true'; 
      if (updateNeeded) { 
       return this.updateEndpoint(token).then(() => result.EndpointArn); 
      } 
      return snsEndpointARN; 
      }) 
      .catch(() => { 
      this.createPlatformEndpoint(token, applicationArn) 
      }); 
     } 
    }); 
    } 

    updateEndpoint(snsEndpointARN, token) { 
    //AWS is returning error saying that it requires 6 params to update endpoint, if anyone has any idea about it let me know please 
    return AWSSNS.SetEndpointAttributes({EndpointArn: snsEndpointARN, Attributes: {Token: token, Enabled: true}}); 
    } 

    createPlatformEndpoint(token, applicationArn) { 
    return AWSSNS.CreatePlatformEndpoint({Token: token, PlatformApplicationArn: applicationArn}) 
     .then(result => result.EndpointArn) 
     .catch((error = {}) => { 
     console.log(error); 
     }); 
    } 
} 

export default new AWSUtility();