localstack-terraform-samples/apigatewayv2-ws-request-authorizer/lambda-auth.js at master · localstack-samples/localstack-terraform-samples · GitHub

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exports.handler = function(event, context, callback) {
  console.log('Received event:', JSON.stringify(event, null, 2));
  if (event.headers.authorization === "secretToken") {
    console.log("allowed");
    callback(null,{
      "principalId": "abcdef", // The principal user identification associated with the token sent by the client.
      "policyDocument": {
        "Version": "2012-10-17",
        "Statement": [{
          "Action": "execute-api:Invoke",
          "Effect": "Allow",
          "Resource": "*"
        }]
      },
      "context": {
        "stringKey": "value",
        "numberKey": 1,
        "booleanKey": true
      }
    });
  }
  else {
    console.log("denied");
    callback(null, {
      "principalId": "abcdef", // The principal user identification associated with the token sent by the client.
      "policyDocument": {
        "Version": "2012-10-17",
        "Statement": [{
          "Action": "execute-api:Invoke",
          "Effect": "Deny",
          "Resource": "*"
        }]
      },
      "context": {
        "stringKey": "value",
        "numberKey": 1,
        "booleanKey": true
      }
    });
  }
};