Pass a referance to API Gateway to Lambda - amazon-web-services

Question

I'm using the Serverless framework and one of my lambda functions needs to know the API gateway id. I tried setting an envierment varable like the following.
AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Globals:
Function:
Runtime: nodejs6.10
Environment:
Variables:
API_GATEWAY: !Ref ApiGatewayRestApi
Resources:
Test:
Type: AWS::Serverless::Function
Properties:
Handler: LeadLambda.test
CodeUri: ./Lead
Events:
GetResource:
Type: Api
Properties:
Path: /
Method: get
But when I try and deploy I get a circular dependency error.
Failed to create the changeset: Waiter ChangeSetCreateComplete failed: Waiter encountered a terminal failure state Status: FAILED. Reason: Circular dependency between resources: [TestGetResourcePermissionProd, ServerlessRestApi, Test, TestGetResourcePermissionTest, ServerlessRestApiDeploymentb5240aa4ca, ServerlessRestApiProdStage]

Answer 1

The solution I ended up using was to hard code the integration uri in the API instead of referencing the Lambda.
Globals:
Function:
Runtime: nodejs6.10
Environment:
Variables:
API: !Sub https://${Api}.execute-api.${AWS::Region}.amazonaws.com/prod
Resources:
Entry:
Type: AWS::Serverless::Function
Properties:
FunctionName: prompt-stack-Entry
Handler: LeadLambda.entry
CodeUri: s3://ddg-prompt/LeadLambda.zip
Role: !GetAtt LeadRole.Arn
Events:
GetResource:
Type: Api
Properties:
Path: /lead
Method: POST
RestApiId: !Ref Api
Api:
Type: AWS::Serverless::Api
Properties:
StageName: prod
DefinitionBody:
swagger: 2.0
info:
title:
Ref: AWS::StackName
paths:
/lead:
post:
responses:
'200':
description: Successful operation
responseTemplates:
application/json: ""
x-amazon-apigateway-integration:
httpMethod: POST
type: aws
uri: !Sub arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/arn:aws:lambda:${AWS::Region}:${AWS::AccountId}:function:prompt-stack-Entry/invocations
responses:
default:
statusCode: '200'
responseTemplates:
application/json: ''