AWSTemplateFormatVersion: 2010-09-09
Description: >-
  A Lambda function that starts an AWS FIS experiment triggered by events.
Transform:
- AWS::Serverless-2016-10-31

Parameters:
  ExperimentTemplateId:
    Type: String
  EventPattern:
    Type: String

Resources:
  EventTriggeredStartExperiment:
    Type: AWS::Serverless::Function
    Properties:
      Description: A Lambda function that starts an AWS FIS experiment triggered by an event.
      Runtime: nodejs14.x
      Handler: src/event-trigger-experiment.handler
      Events:
        Trigger:
          Type: CloudWatchEvent 
          Properties:
            Pattern: !Ref EventPattern
      MemorySize: 128
      Timeout: 100
      Policies:
        - Version: '2012-10-17'
          Statement:
            - Effect: Allow
              Action:
                - fis:StartExperiment
              Resource:
                - Fn::Join:
                  - ''
                  - - 'arn:aws:fis:*:*:experiment-template/'
                    - Ref: ExperimentTemplateId
                - Fn::Join:
                  - ''
                  - - 'arn:aws:fis:*:*:experiment/*'
      Environment:
        Variables:
          EXPERIMENT_TEMPLATE_ID: !Ref ExperimentTemplateId