AWS - nodejs SDK - CognitoIdentityServiceProvider.initiateAuth - CredentialsError:配置中缺少凭据

Question

我正在尝试使用带有用户池的AWS Cognito通过我的API进行身份验证.我有一个通过AWS Cognito用户池创建的用户,我正在尝试使用该用户登录.

我得到的错误是CredentialsError: Missing credentials in config.特别是它告诉我,我需要一个IdentityPoolId.但我似乎无法IdentityPoolId在我的AWS控制台中找到它.在哪里,我从我的用户池得到这个？我看到的只是一个Pool id和一个Pool ARN.

相关源代码:

var aws = require('aws-sdk');
aws.config.update({
    region: 'us-east-1',
    credentials: new aws.CognitoIdentityCredentials({
        IdentityPoolId: '???'
    })
});


var authUser = function(params, callback)
{
    if (!params || !params.Email || !params._password)
    {
        callback(new Error('Invalid parameters.'));
        return false;
    }

    var cognito = new aws.CognitoIdentityServiceProvider();

    var authParams = {
        AuthFlow: 'USER_SRP_AUTH', // not sure what this means...
        ClientId: conf.AWSConfig.ClientId,
        AuthParameters: {
            Username: params.Email,
            Password: params._password
        }
    };

    cognito.initiateAuth(authParams, function(err, data)
    {
        if (err)
        {
            console.log('Error details: ' + util.inspect(err));
            callback(err);
            return false;
        }
        callback(null, {success: true, data: data});
    });
}

对于authParams对象,我不确定AuthFlow应该是什么.看看http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/CognitoIdentityServiceProvider.html#initiateAuth-property看起来就像USER_SRP_AUTH我应该使用的那样.

编辑:

我相信我可能已经找到了我的地方IdentityPoolId.我查看了我的Federated Identities部分,并在编辑身份池时添加了相应User Pool的Authentication Providers部分.

我相关Authentication Provider的Cognito到,我创建通过输入我的用户群User Pool ID,并App Client ID为该用户池.现在使用相同的代码,Identity pool ID我收到错误CredentialsError: Missing credentials in config.它说Unauthorized access is not supported for this identity pool.好的......我正在尝试授权用户......我是否需要创建一个未经身份验证的角色,以便用户可以在未经过身份验证时进行身份验证？如果这就是我需要做的事,这似乎很愚蠢.

编辑2:

我还要指出的是,我能够登录并获得一个AccessToken以及一个IdToken和RefreshToken使用JavaScript SDK(没有的NodeJS).我没有需要这样做IdentityPoolId.我需要的唯一东西是a UserPoolId和a ClientId.

var authenticateUser = function(onSuccessCallback)
{
    var authData = {
        Username: getUserName(), // gets username from an html text field
        Password: getPassword()  // gets password from an html password field
    };

    var authDetails = new AWSCognito.CognitoIdentityServiceProvider.AuthenticationDetails(authData);

    var cognitoUser = getCognitoUser();

    cognitoUser.authenticateUser(authDetails,
    {
        onSuccess: function(result)
        {
            console.log('access token: ' + result.getAccessToken().getJwtToken());
            console.log('idToken: ' + result.idToken.jwtToken);
            console.log(result);

            if (onSuccessCallback && typeof(onSuccessCallback) == 'function')
            {
                onSuccessCallback(cognitoUser);
            }
        },
        onFailure: function(err)
        {
            // UserNotConfirmedException: User is not confirmed.
            console.log('authError');
            alert(err);
        }
    });
}

Answer 1

事实证明，这initiateAuth根本不是我想做的。我还缺少一个名为amazon-cognito-identity-js. 安装后，我更新了我的代码，如下所示：

var authUser = function(params, callback)
{
    if (!params || !params.Email || !params._password)
    {
        callback(new Error('Invalid parameters.'));
        return false;
    }

    var poolData = {
        UserPoolId: conf.AWSConfig.UserPoolId,
        ClientId: conf.AWSConfig.ClientId
    };

    var userPool = new aws.CognitoIdentityServiceProvider.CognitoUserPool(poolData);
    var authData = {
        Username: params.Email,
        Password: params._password
    };

    var authDetails = new aws.CognitoIdentityServiceProvider.AuthenticationDetails(authData);
    var userData = {
        Username: params.Email,
        Pool: userPool
    };

    var cognitoUser = new aws.CognitoIdentityServiceProvider.CognitoUser(userData);

    cognitoUser.authenticateUser(authDetails, {
        onSuccess: function(result)
        {
            callback(null, {success: true, data: result});
        },
        onFailure: function(err)
        {
            console.log('authUser error: ' + util.inspect(err));
            callback(err);
        }
    });
}

我现在成功地得到了令牌的响应！万岁！