如何使用Cognito Id（+配置）調用AWS API Gateway端點？

Question

我想使用generated JavaScript API SDK調用受AWS_IAM保護的AWS API Gateway Endpoint 。

我有一個Cognito UserPool和一個Cognito Identity Pool 。 兩者都通過ClientId正確同步。

我使用此代碼Sign in並獲得Cognito Identity

AWS.config.region = 'us-east-1'; // Region
AWS.config.credentials = new AWS.CognitoIdentityCredentials({
  IdentityPoolId: 'us-east-1:XXXXXXXXXXXXXXXXXXXXXXXX' // your identity pool id here
});

AWSCognito.config.region = 'us-east-1';
AWSCognito.config.credentials = new AWS.CognitoIdentityCredentials({
  IdentityPoolId: 'us-east-1:XXXXXXXXXXXXXXXXXXXXXXXX' // your identity pool id here
});

var poolData = {
  UserPoolId: 'us-east-1_XXXXXXXX',
  ClientId: 'XXXXXXXXXXXXXXXXXXXXXXXX'
};
var userPool = new AWSCognito.CognitoIdentityServiceProvider.CognitoUserPool(poolData);


var authenticationData = {
  Username: 'user',
  Password: '12345678',
};
var authenticationDetails = new AWSCognito.CognitoIdentityServiceProvider.AuthenticationDetails(authenticationData);
var userData = {
  Username: 'user',
  Pool: userPool
};
var cognitoUser = new AWSCognito.CognitoIdentityServiceProvider.CognitoUser(userData);
cognitoUser.authenticateUser(authenticationDetails, {
  onSuccess: function (result) {
  console.log('access token + ' + result.getAccessToken().getJwtToken());

  AWS.config.credentials = new AWS.CognitoIdentityCredentials({
    IdentityPoolId: 'us-east-1:XXXXXXXXXXXXXXXXXXXX',
    IdentityId: AWS.config.credentials.identityId,
    Logins: {
      'cognito-idp.us-east-1.amazonaws.com/us-east-1_XXXXXX': result.idToken.jwtToken
    }
  });

  AWS.config.credentials.get(function (err) {
    // now I'm using authenticated credentials
    if(err)
    {
      console.log('error in autheticatig AWS'+err);
    }
    else
    {
      console.log(AWS.config.credentials.identityId);

    }
  });
  },

  onFailure: function (err) {
    alert(err);
  }

});

所有這些都成功了，我現在擁有authorized Cognito Identity 。

現在，我嘗試調用API Gateway Endpoint來執行它指向的Lambda Function 。

  var apigClient = apigClientFactory.newClient({
    accessKey: AWS.config.credentials.accessKeyId, //'ACCESS_KEY',
    secretKey: AWS.config.credentials.secretAccessKey, //'SECRET_KEY',
    sessionToken: AWS.config.credentials.sessionToken, // 'SESSION_TOKEN', //OPTIONAL: If you are using temporary credentials you must include the session token
    region: 'us-east-1' // OPTIONAL: The region where the API is deployed, by default this parameter is set to us-east-1
  });

  var params = {
    // This is where any modeled request parameters should be added.
    // The key is the parameter name, as it is defined in the API in API Gateway.
  };

  var body = {
    // This is where you define the body of the request,
    query: '{person {firstName lastName}}'
  };

  var additionalParams = {
    // If there are any unmodeled query parameters or headers that must be
    //   sent with the request, add them here.
    headers: {},
    queryParams: {}
  };

  apigClient.graphqlPost(params, body, additionalParams)
    .then(function (result) {
      // Add success callback code here.
      console.log(result);
    }).catch(function (result) {
    // Add error callback code here.
    console.log(result);
  });

但是不幸的是，這失敗了。 OPTIONS請求以200成功，但POST失敗403 。

我很確定這里沒有CORS問題。

我很確定問題與IAM Roles和AWS Resource Configurations 。

我的問題基本上是，請您提供給我所有必要的必要的AWS Resource Configurations和IAM Roles嗎？

我擁有的資源是

• API網關-具有已部署的API端點
• Lambda函數-由端點調用
• Cognito用戶池-應用已同步到身份池
• Cognito身份池-映射有授權和未經授權的角色。
• IAM角色-用於Lambda函數以及Cognito身份池的已授權和未經授權的角色。

但是我不知道如何正確配置這些資源才能使其正常工作。

謝謝

Answer 1

Cognito身份的角色具有哪些訪問權限？ 確保它有權在您的API上執行execute-api:Invoke 。

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "execute-api:Invoke"           
      ],
      "Resource": [
        "arn:aws:execute-api:us-east-1:<account>:<rest-api>/*/POST/graphql"
      ]
    }
  ]
} 

您可以從Web控制台的“方法設置”頁面獲取確切的資源ARN。

Answer 2

即使遵循所有步驟，我仍然遇到相同的錯誤。 原因是我在初始化apigClient時錯過了“ sessionToken”。

var apigClient = apigClientFactory.newClient({
accessKey: AWS.config.credentials.accessKeyId, //'ACCESS_KEY',
secretKey: AWS.config.credentials.secretAccessKey, //'SECRET_KEY',
sessionToken: AWS.config.credentials.sessionToken, // 'SESSION_TOKEN', //OPTIONAL: If you are using temporary credentials you must include the session token
region: 'us-east-1' // OPTIONAL: The region where the API is deployed, by default this parameter is set to us-east-1 });

//可選：如果您使用的是臨時憑據，則必須包含會話令牌 -並不是真正的可選