Error understanding Apigateway and nested stack on AWS cloudformation - amazon-web-services

Question

I working into decouple a big template with lambdas that use apigateway AWS. I resolve multiple errors about nested stack process, but currently error its not clear. Could you check whats its the problem into definitions?
Main stack show general error from api substack create, but api-substack show next error:
Template error: instance of Fn::Sub references invalid resource attribute CreateCatalogFunctionDev.Arn
Next show a code of templates:
Main Template
SubStackAPIDev:
Type: 'AWS::CloudFormation::Stack'
Properties:
TemplateURL: https://s3.awsroute.com/substack-api.yaml
TimeoutInMinutes: 5
Parameters:
CreateCatalogFunctionDev: !GetAtt CreateCatalogFunctionDev.Outputs.CreateCatalogFunctionDev
SubStackCreateCatalogDev:
Type: 'AWS::CloudFormation::Stack'
Properties:
TemplateURL: https://s3.awsroute.com/substack-create-catalog.yaml
TimeoutInMinutes: 5
Parameters:
APIDev: !GetAtt SubStackAPIDev.Outputs.APIGateway
SubStackCreateCatalogDev
AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: >
SAM template for create catalog
Parameters:
SecretsManagerName:
Type: String
Description: "Secrets Manager Name"
SnsTopicArn:
Type: String
Default: arn:aws:sns:us-west-2:XXXXXX:SNS-errorNotification
Description: "Sns topic error handler email notification"
APIDev:
Type: AWS::Serverless::Api
Resources:
LayerDev:
Type: 'AWS::Serverless::LayerVersion'
Properties:
ContentUri: ../../layer
CompatibleRuntimes:
- python3.6
- python3.7
- python3.8
RetentionPolicy: Delete
CreateCatalogFunctionDev:
Type: AWS::Serverless::Function
Properties:
Description: Recieve api request and and process data.
CodeUri: ../../src/catalog/create_catalog/
Handler: create_catalog.lambda_handler
Runtime: python3.8
FunctionName: CreateCatalogFunctionDev
Role: arn:aws:iam::XXXXXXXX:role/lambda-essential-role
Timeout: 480
Environment:
Variables:
CREATE_CATALOG_SECRET_NAME: !Sub '${SecretsManagerName}'
SNS_ARN: !Sub '${SnsTopicArn}'
Layers:
- arn:aws:lambda:us-west-2:XXXXXXX:layer:requests:1
- arn:aws:lambda:us-west-2:XXXXXXX:layer:requests-oauthlib:1
- !Ref LayerDev
Events:
CreateCatalogApiEvent:
Type: Api
Properties:
Path: /api-channel/products/catalog
Method: POST
RestApiId: !Ref APIDev
SubStack API
AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: >
sub_channels_appi
SAM template for API
Parameters:
SwaggerFile:
Type: String
# TODO dejar URL de S3 de gitla-cicd
Default: "s3://cf-templates-1hurrmgzyzoz3-ap-northeast-1/swagger_dev.yaml"
Description: "This swagger file Amazon S3 path"
SecretsManagerName:
Type: String
Default: "/channels/Dev"
Description: "Secrets Manager Name"
StageName:
Type: String
Default: "${stageVariables.alias}"
Description: "This is the alias to the swagger file"
UsaSupplyApiUrlDev:
Type: String
Default: "https://thecornercloud.com/developers/index.php/"
Description: "Corner Cloud Staging"
SnsTopicArn:
Type: String
Default: arn:aws:sns:us-west-2:000365055762:channels-errorNotification
Description: "Sns topic error handler email notification"
CreateCatalogFunctionDev:
Type: String
Resources:
#######################################
# Serverless LayerVersion
#######################################
LayerDev:
Type: 'AWS::Serverless::LayerVersion'
Properties:
ContentUri: ../../layer
CompatibleRuntimes:
- python3.6
- python3.7
- python3.8
RetentionPolicy: Delete
#######################################
# Serverless API
#######################################
APIDev:
Type: AWS::Serverless::Api
Properties:
Auth:
ApiKeyRequired: true
StageName: dev
EndpointConfiguration: REGIONAL
DefinitionBody:
Fn::Transform:
Name: AWS::Include
Parameters:
Location: !Ref SwaggerFile
Variables:
alias: dev
#######################################
# ApiGateway ApiKey
#######################################
APIKeyDev:
Type: AWS::ApiGateway::ApiKey
Properties:
Name: "APIKeyDev"
Description: "API Key Dev"
Enabled: true
GenerateDistinctId: false
StageKeys:
- RestApiId: !Ref APIDev
StageName: !Ref APIDev.Stage
#######################################
# ApiGateway UsagePlan
#######################################
APIUsagePlanDev:
Type: AWS::ApiGateway::UsagePlan
DependsOn: APIDev
Properties:
ApiStages:
- ApiId: !Ref APIDev
Stage: !Ref APIDev.Stage
Quota:
Limit: 5000
Period: MONTH
Throttle:
BurstLimit: 200
RateLimit: 100
UsagePlanName: APIUsagePlanDev
#######################################
# ApiGateway UsagePlanKey
#######################################
APIUsagePlanKeyDev:
Type: AWS::ApiGateway::UsagePlanKey
Properties:
KeyId: !Ref APIKeyDev
KeyType: API_KEY
UsagePlanId: !Ref APIUsagePlanDev
#######################################
# ApiGateway Deployment
#######################################
DeploymentApiIdDev:
Type: AWS::ApiGateway::Deployment
Properties:
RestApiId: !Ref APIDev
Outputs:
APIGateway:
Description: "API Gateway Reference"
Value: !Ref APIDev
Export:
Name: !Join [":", [!Ref "AWS::StackName", "APIDev"]]
And finally the swagger file (honestly, I didn't define the api with this method and think that I want remove swagger if is possible).
swagger-dev
swagger: "2.0"
info:
version: "1.0.0"
title: "APIDev"
tags:
- name: "Channels"
description: "Manage Channels process."
schemes:
- "https"
x-amazon-apigateway-api-key-source: "HEADER"
securityDefinitions:
APIKey:
type: apiKey
name: X-Api-Key
in: header
paths:
/channels/products/catalog:
post:
tags:
- "Channels"
summary: " products catalog post."
operationId: "ProductsCatalogPostDev"
produces:
- "application/json"
responses:
201:
description: "Successful Operation"
400:
description: "Invalid parameters"
401:
description: "Unauthorized"
405:
description: "Validation exception"
security:
- APIKey: []
x-amazon-apigateway-integration:
uri:
Fn::Sub: arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${CreateCatalogFunctionDev.Arn}/invocations
responses:
default:
statusCode: "200"
passthroughBehavior: "when_no_match"
httpMethod: "POST"
contentHandling: "CONVERT_TO_TEXT"
type: "aws_proxy"

Answer 1

Your CreateCatalogFunctionDev is in a different sub-stack then APIDev. You can't reference resources directly across stacks. You either have to export/import their outputs, or pass the references as input parameters.