AWS API网关自定义授权程序lambda

Question

{
    "authorizationToken": "0c34ba00bde34200b383abe22bcfef96",
    "methodArn": "arn:aws:execute-api:ap-southeast-1:855399270504:z6t3cv0z4m/null/GET/",
    "type": "TOKEN"
}

{
  "principalId": "xxxxxxx", // the principal user identification associated with the token send by the client
  "policyDocument": { // example policy shown below, but this value is any valid policy
    "Version": "2012-10-17",
    "Statement": [
      {
        "Effect": "Allow",
        "Action": [
          "execute-api:Invoke"
        ],
        "Resource": [
          "arn:aws:execute-api:us-east-1:xxxxxxxxxxxx:xxxxxxxx:/test/*/mydemoresource/*"
        ]
      }
    ]
  }
}

Execution log for request test-request
Thu Jun 29 11:48:10 UTC 2017 : Starting authorizer: 1o3dvk for request: test-request
Thu Jun 29 11:48:10 UTC 2017 : Incoming identity: **************************cfef96
Thu Jun 29 11:48:10 UTC 2017 : Endpoint request URI: https://lambda.ap-southeast-1.amazonaws.com/2015-03-31/functions/arn:aws:lambda:ap-southeast-1:855399270504:function:um_guestSessionAuthoriser/invocations
Thu Jun 29 11:48:10 UTC 2017 : Endpoint request headers: {x-amzn-lambda-integration-tag=test-request, Authorization=*********************************************************************************************************************************************************************************************************************************************************************************************************************************************751e60, X-Amz-Date=20170629T114810Z, x-amzn-apigateway-api-id=z6t3cv0z4m, X-Amz-Source-Arn=arn:aws:execute-api:ap-southeast-1:855399270504:z6t3cv0z4m/authorizers/1o3dvk, Accept=application/json, User-Agent=AmazonAPIGateway_z6t3cv0z4m, X-Amz-Security-Token=FQoDYXdzEHQaDOcIbaPscYGsl1wF4iLBAxzOTpZlR2r3AO3g96xwhRuQjEhU9OjOaRieBWQPeosNqv53aGKnBTT2CmkrVzHo3UqOdT1eakuS7tAXAbEcUIHVheWpBnvxqTkaPcknRL7QE79RSqVeryoXo2R1Kmk0Q9Iq+JGFlOJYQQJqvY/hcUg189xqbpTGrhZjcA+pjuSp+M9D97Kce0VP0e3peu/YvON0eGvUlj59MAJAwGVPIzplMKTDFrFg5NKEj79RSxNrNE8y4bAebOwlD8xLv649Zny7++xlMBBwHqMNHu3K9lFXSnKY9DHf6kvezZmpoFB2uu8WbrpInH0eQ/bIAd [TRUNCATED]
Thu Jun 29 11:48:10 UTC 2017 : Endpoint request body after transformations: {"type":"TOKEN","methodArn":"arn:aws:execute-api:ap-southeast-1:855399270504:z6t3cv0z4m/null/GET/","authorizationToken":"0c34ba00bde34200b383abe22bcfef96"}
Thu Jun 29 11:48:10 UTC 2017 : Sending request to https://lambda.ap-southeast-1.amazonaws.com/2015-03-31/functions/arn:aws:lambda:ap-southeast-1:855399270504:function:um_guestSessionAuthoriser/invocations
Thu Jun 29 11:48:21 UTC 2017 : Authorizer result body before parsing: {"principalId":"user","policyDocument":{"version":"2012-10-17","statement":[{"resource":"arn:aws:execute-api:ap-southeast-1:855399270504:z6t3cv0z4m/null/GET/","action":"execute-api:Invoke","effect":"Allow"}]}}
Thu Jun 29 11:48:21 UTC 2017 : Execution failed due to configuration error: Could not parse policy: {"version":"2012-10-17","statement":[{"resource":"arn:aws:execute-api:ap-southeast-1:855399270504:z6t3cv0z4m/null/GET/","action":"execute-api:Invoke","effect":"Allow"}]}
Thu Jun 29 11:48:21 UTC 2017 : AuthorizerConfigurationException

{
    "principalId": "user",
    "policyDocument": {
        "version": "2012-10-17",
        "statement": [{
            "resource": "arn:aws:execute-api:ap-southeast-1:855399270504:z6t3cv0z4m/null/GET/",
            "action": "execute-api:Invoke",
            "effect": "Allow"
        }]
    }
}

{
    "principalId": "user",
    "policyDocument": {
        "version": "2012-10-17",
        "statement": [{
            "effect": "Deny",
            "action": ["execute-api:Invoke"],
            "resource": ["arn:aws:execute-api:ap-southeast-1:855399270504:z6t3cv0z4m/null/GET/"]
        }]
    }
}

但是看起来在我的lambda响应和API网关之间发生了一些奇怪的事情，
变量在内部的某个地方被压缩得更低，
而我仍然得到了相同的解析错误，
它会接受其他格式的响应吗？字符串也不起作用。

我还应该尝试什么？我的策略格式错误吗？
我从这些站点获得了两种不同的策略格式-
1。http://docs.aws.amazon.com/apigateway/latest/developerguide/use-custom-authorizer.html
2。https://aws.amazon.com/blogs/compute/induction-custom-authorizers-in-amazon-api-gateway/

Answer 1

您的策略属性需要适当的大写。而不是：

{
    "principalId": "user",
    "policyDocument": {
        "version": "2012-10-17",
        "statement": [{
            "resource": "arn:aws:execute-api:ap-southeast-1:855399270504:z6t3cv0z4m/null/GET/",
            "action": "execute-api:Invoke",
            "effect": "Allow"
        }]
    }
}

应该是：

{
    "principalId": "user",
    "PolicyDocument": {
        "Version": "2012-10-17",
        "Statement": [{
            "Resource": "arn:aws:execute-api:ap-southeast-1:855399270504:z6t3cv0z4m/null/GET/",
            "Action": "execute-api:Invoke",
            "Effect": "Allow"
        }]
    }
}

不妨用“principalid”来保持事情的一致性。