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template.yaml
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template.yaml
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# -----------------------------------------------------------------------------
# This is a AWS Serverless Application Model (SAM) template
# It defines the "stack" of AWS resources needed to run the SAM app
# -----------------------------------------------------------------------------
AWSTemplateFormatVersion: 2010-09-09
# -----------------------------------------------------------------------------
# This particular template defines the authentication API for Tacocat Gallery
# -----------------------------------------------------------------------------
Description: Tacocat gallery authentication API
# -----------------------------------------------------------------------------
# This file is written in SAM syntax, and gets transfomed and expanded into a
# CloudFormation template. The CloudFormation template is what actually gets
# deployed. The main point is that SAM syntax is much simpler, with a lot less
# boilerplate around declaring resources like Lambda functions and their
# accompanying execution roles.
# -----------------------------------------------------------------------------
Transform: AWS::Serverless-2016-10-31
# -----------------------------------------------------------------------------
# Parameters that can be specified when deploying this template
# This is the only way to define constants for use elsewhere in the template
# -----------------------------------------------------------------------------
Parameters:
Env:
Description: Environment for which the infrastructure will be deployed
Type: String
AllowedValues:
- dev
- prod
ConstraintDescription: Must be either 'dev' or 'prod'
GalleryAppDomain:
Description: Domain of the Tacocat photo gallery web app
Type: String
AllowedValues:
- staging-pix.tacocat.com
- pix.tacocat.com
ConstraintDescription: Must be either 'staging-pix.tacocat.com' or 'pix.tacocat.com'
DomainCertificateArn:
Description: ARN of the ACM certificate for the GalleryAppDomain domain
Type: String
AllowedValues:
- arn:aws:acm:us-east-1:010410881828:certificate/092ab57c-f87d-4c44-a72c-63cfbbb55800 # staging-pix.tacocat.com
- arn:aws:acm:us-east-1:010410881828:certificate/e142cda0-96db-4651-92fd-35dd9a52e9a2 # pix.tacocat.com
CognitoUserPoolID:
Description: ID of Cognito user pool
Type: String
CognitoBaseURI:
Description: Root URL of the user pool
Type: String
CognitoClientID:
Description: ID of the app client created in AWS Cognito. It's found in AWS Cognito under App client information > Client ID
Type: String
CognitoLogoutCallbackURI:
Description: Path within the gallery web app (GalleryAppBaseURI) to send users after Cognito logs them out.
Type: String
Default: /
# ------------------------------------------------------------------------------
# Configuration inheritable by all Lambda functions and other types of Resources
# ------------------------------------------------------------------------------
Globals:
Function:
Runtime: nodejs20.x
Architectures:
- x86_64
MemorySize: 128
Timeout: 100 # TODO decrease this; the default is 3 seconds
LoggingConfig:
LogFormat: JSON
Environment:
Variables:
GalleryAppDomain: !Ref GalleryAppDomain
Api:
Name: !Sub Tacocat Gallery Auth API - ${Env}
Domain:
DomainName: !Sub auth.${GalleryAppDomain}
CertificateArn: !Ref DomainCertificateArn
Cors:
AllowMethods: "'GET,OPTIONS'"
AllowHeaders: "'content-type,origin'"
AllowOrigin: !Sub "'https://${GalleryAppDomain}'"
AllowCredentials: true
# -----------------------------------------------------------------------------
# Resources are the actual AWS systems that will be provisioned
# -----------------------------------------------------------------------------
Resources:
# -----------------------------------------------------------------------------
# A Layer is a set of files that gets zipped up and included with a Lambda
# This contains the TypeScript library modules that Lambda functions will call
# -----------------------------------------------------------------------------
LayerCommons:
Type: AWS::Serverless::LayerVersion
Properties:
ContentUri: src/layers/commons/
CompatibleRuntimes:
- nodejs18.x
RetentionPolicy: Delete
Metadata:
BuildMethod: makefile
BuildArchitecture: x86_64
# Lambda for retrieving authentication status
AuthStatusFunction:
Type: AWS::Serverless::Function
Properties:
FunctionName: !Sub ${AWS::StackName}-AuthStatus
Description: HTTP GET method to get authentication status
Handler: src/handlers/authStatus.handler
Layers:
- !Ref LayerCommons
Environment:
Variables:
AuthAppDomain: !Sub auth.${GalleryAppDomain}
GalleryAppBaseURI: !Sub https://${GalleryAppDomain}
CognitoUserPoolID: !Ref CognitoUserPoolID
CognitoBaseURI: !Ref CognitoBaseURI
CognitoClientID: !Ref CognitoClientID
CognitoLogoutCallbackURI: !Ref CognitoLogoutCallbackURI
CognitoClientSecret: "{{resolve:secretsmanager:Tacocat/Gallery/Authentication:SecretString:TacocatGalleryCognitoClientSecret}}"
Events:
Api:
Type: Api
Properties:
Path: /
Method: GET
Metadata:
BuildProperties:
External:
commons
# Lambda for redirecting to the AWS Cognito login page
RedirectToCognitoFunction:
Type: AWS::Serverless::Function
Properties:
FunctionName: !Sub ${AWS::StackName}-RedirectToCognito
Description: HTTP GET method for redirecting to the AWS Cognito login page
Handler: src/handlers/redirectToCognito.handler
Layers:
- !Ref LayerCommons
Environment:
Variables:
AuthAppDomain: !Sub auth.${GalleryAppDomain}
GalleryAppBaseURI: !Sub https://${GalleryAppDomain}
CognitoUserPoolID: !Ref CognitoUserPoolID
CognitoBaseURI: !Ref CognitoBaseURI
CognitoClientID: !Ref CognitoClientID
CognitoLogoutCallbackURI: !Ref CognitoLogoutCallbackURI
CognitoClientSecret: "{{resolve:secretsmanager:Tacocat/Gallery/Authentication:SecretString:TacocatGalleryCognitoClientSecret}}"
Events:
Api:
Type: Api
Properties:
Path: /login
Method: GET
Metadata:
BuildProperties:
External:
commons
# Lambda for handling the login callback from the AWS Cognito login page
LoginCallbackFunction:
Type: AWS::Serverless::Function
Properties:
FunctionName: !Sub ${AWS::StackName}-LoginCallback
Description: Handles the login callback from the AWS Cognito login page
Handler: src/handlers/loginCallback.handler
Layers:
- !Ref LayerCommons
Environment:
Variables:
AuthAppDomain: !Sub auth.${GalleryAppDomain}
GalleryAppBaseURI: !Sub https://${GalleryAppDomain}
CognitoUserPoolID: !Ref CognitoUserPoolID
CognitoBaseURI: !Ref CognitoBaseURI
CognitoClientID: !Ref CognitoClientID
CognitoLogoutCallbackURI: !Ref CognitoLogoutCallbackURI
CognitoClientSecret: "{{resolve:secretsmanager:Tacocat/Gallery/Authentication:SecretString:TacocatGalleryCognitoClientSecret}}"
Events:
Api:
Type: Api
Properties:
Path: /login_callback
Method: GET
Metadata:
BuildProperties:
External:
commons
# Lambda for logging the user out
LogoutFunction:
Type: AWS::Serverless::Function
Properties:
FunctionName: !Sub ${AWS::StackName}-Logout
Description: Log the user out
Handler: src/handlers/logout.handler
Layers:
- !Ref LayerCommons
Environment:
Variables:
AuthAppDomain: !Sub auth.${GalleryAppDomain}
GalleryAppBaseURI: !Sub https://${GalleryAppDomain}
CognitoUserPoolID: !Ref CognitoUserPoolID
CognitoBaseURI: !Ref CognitoBaseURI
CognitoClientID: !Ref CognitoClientID
CognitoLogoutCallbackURI: !Ref CognitoLogoutCallbackURI
CognitoClientSecret: "{{resolve:secretsmanager:Tacocat/Gallery/Authentication:SecretString:TacocatGalleryCognitoClientSecret}}"
Events:
Api:
Type: Api
Properties:
Path: /logout
Method: GET
Metadata:
BuildProperties:
External:
commons
# -----------------------------------------------------------------------------
# Outputs
# -----------------------------------------------------------------------------
Outputs:
AwsApi:
Description: AWS API URL (not used)
Value: !Sub https://${ServerlessRestApi}.execute-api.${AWS::Region}.amazonaws.com/
Api:
Description: API URL (use this)
Value: !Sub https://auth.${GalleryAppDomain}