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template.yaml
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AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
sam-app
Sample SAM Template for sam-app
# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
Function:
Timeout: 60
Parameters:
unauthRole:
Type: String
Description: Unauth Role associated with this project
graphqlApi:
Type: String
Description: AppSync API ID associated with this project
graphqlEndpoint:
Type: String
Description: AppSync Endpoint associated with this project
tmdbApiKey:
Type: String
Description: API Key to access TMDb
Resources:
pubSubDataSource:
Type: AWS::AppSync::DataSource
Properties:
Type: NONE
Description: "Local Resolver"
ApiId: !Ref graphqlApi
Name: PubSub
pubSubResolver:
Type: "AWS::AppSync::Resolver"
Properties:
ApiId: !Ref graphqlApi
TypeName: "Mutation"
FieldName: "createMessage"
DataSourceName: !GetAtt pubSubDataSource.Name
RequestMappingTemplate: |
{
"version": "2017-02-28",
"payload": {
"message": "${context.arguments.message}",
"sentAt": "$util.time.nowISO8601()"
}
}
ResponseMappingTemplate: |
$util.toJson($context.result)
GetMovieFunction:
Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
Properties:
CodeUri: get-movie/
Handler: app.lambdaHandler
Runtime: nodejs14.x
Role: !GetAtt [ LambdaExecutionRole, Arn ]
Environment: # More info about Env Vars: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#environment-object
Variables:
ENDPOINT: !Ref graphqlEndpoint
TMDBKEY: !Ref tmdbApiKey
IteratorFunction:
Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
Properties:
InlineCode: |
import boto3
import os
client = boto3.client('lambda')
function = os.environ['FUNCTION']
def lambda_handler(event, context):
index = event['iterator']['index'] + 1
response = client.invoke(
FunctionName=function,
InvocationType='Event'
)
return {
'index': index,
'continue': index < event['iterator']['count'],
'count': event['iterator']['count']
}
Handler: index.lambda_handler
Runtime: python2.7
Role: !GetAtt [ LambdaExecutionRole, Arn ]
Environment: # More info about Env Vars: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#environment-object
Variables:
FUNCTION: !GetAtt [ GetMovieFunction, Arn ]
LambdaExecutionRole:
Type: "AWS::IAM::Role"
Properties:
AssumeRolePolicyDocument:
Version: "2012-10-17"
Statement:
-
Effect: Allow
Principal:
Service: lambda.amazonaws.com
Action: "sts:AssumeRole"
Path: "/"
Policies:
-
PolicyName: LambdaInvokePolicy
PolicyDocument:
Version: "2012-10-17"
Statement:
-
Effect: Allow
Action:
- "lambda:*"
- "appsync:GraphQL"
- "logs:CreateLogGroup"
- "logs:CreateLogStream"
- "logs:PutLogEvents"
Resource: "*"
StatesExecutionRole:
Type: "AWS::IAM::Role"
Properties:
AssumeRolePolicyDocument:
Version: "2012-10-17"
Statement:
-
Effect: "Allow"
Principal:
Service:
- !Sub states.${AWS::Region}.amazonaws.com
Action: "sts:AssumeRole"
Path: "/"
Policies:
-
PolicyName: StatesExecutionPolicy
PolicyDocument:
Version: "2012-10-17"
Statement:
-
Effect: Allow
Action:
- "lambda:InvokeFunction"
Resource: "*"
UnauthRolePolicy:
Type: AWS::IAM::Policy
Properties:
PolicyName: "AppSyncInvoke"
PolicyDocument:
Version: "2012-10-17"
Statement:
-
Effect: "Allow"
Action: "appsync:GraphQL"
Resource:
- !Join [ "/", [!Join [ ":", ["arn:aws:appsync",!Ref 'AWS::Region',!Ref 'AWS::AccountId',"apis"]],!Ref graphqlApi,"*"]]
Roles:
-
!Ref unauthRole
LambdaTimerStateMachine:
Type: "AWS::StepFunctions::StateMachine"
Properties:
DefinitionString:
!Sub
- |-
{
"Comment": "Invoke Lambda every 10 seconds",
"StartAt": "ConfigureCount",
"States": {
"ConfigureCount": {
"Type": "Pass",
"Result": {
"index": 0,
"count": 6
},
"ResultPath": "$.iterator",
"Next": "Iterator"
},
"Iterator": {
"Type": "Task",
"Resource": "${lambdaArn}",
"ResultPath": "$.iterator",
"Next": "IsCountReached"
},
"IsCountReached": {
"Type": "Choice",
"Choices": [
{
"Variable": "$.iterator.continue",
"BooleanEquals": true,
"Next": "Wait"
}
],
"Default": "Done"
},
"Wait": {
"Type": "Wait",
"Seconds": 10,
"Next": "Iterator"
},
"Done": {
"Type": "Pass",
"End": true
}
}
}
- {lambdaArn: !GetAtt [ IteratorFunction, Arn ]}
RoleArn: !GetAtt [ StatesExecutionRole, Arn ]
Cron:
Type: AWS::Events::Rule
Properties:
Description: Executes Step Functions every minute
ScheduleExpression: rate(1 minute)
State: ENABLED
Targets:
-
Arn: !Ref LambdaTimerStateMachine
Id: "LambdaTimerStateMachine"
RoleArn: !GetAtt CronExecutionRole.Arn
CronExecutionRole:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Version: "2012-10-17"
Statement:
-
Effect: Allow
Principal:
Service: events.amazonaws.com
Action: sts:AssumeRole
Path: /service-role/
Policies:
-
PolicyName: CloudWatchEventsStartStepFunctions
PolicyDocument:
Version: "2012-10-17"
Statement:
-
Effect: Allow
Action: states:StartExecution
Resource: !Ref LambdaTimerStateMachine