---
AWSTemplateFormatVersion: '2010-09-09'
Parameters:
  ECSClusterName:
    Type: String
    Description: Enter ECS EC2 cluster name for installing the sample Memcached workload
  ECSNetworkMode:
    Type: String
    AllowedValues:
      - 'bridge'
      - 'host'
    Default: bridge
    Description: ECS Network Mode for the Task
  TaskRoleName:
    Type: String
    Description: Enter the ECS task role name to be created for Memcached ECS task definition
  ExecutionRoleName:
    Type: String
    Description: Enter the ECS execution role name to be created for Memcached ECS task definition
Conditions:
  IsBridgeNetworking: !Equals [ !Ref ECSNetworkMode, 'bridge' ]
Resources:
  MemcachedECSExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      RoleName: !Ref ExecutionRoleName
      Description: Allows ECS container agent makes calls to the Amazon ECS API on your behalf.
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
            Action: sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy
        - arn:aws:iam::aws:policy/CloudWatchAgentServerPolicy
  MemcachedECSTaskRole:
    Type: AWS::IAM::Role
    Properties:
      RoleName: !Ref TaskRoleName
      Description: Allows ECS tasks to call AWS services on your behalf.
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Effect: Allow
            Principal:
              Service: ecs-tasks.amazonaws.com
            Action: sts:AssumeRole
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/CloudWatchAgentServerPolicy
  ECSMemcachedTaskDefinition:
    Type: 'AWS::ECS::TaskDefinition'
    DependsOn:
      - MemcachedECSExecutionRole
      - MemcachedECSTaskRole
    Properties:
      Family: !Sub 'memcached-prometheus-demo-${ECSClusterName}-EC2-${ECSNetworkMode}'
      TaskRoleArn: !Ref MemcachedECSTaskRole
      ExecutionRoleArn: !Ref MemcachedECSExecutionRole
      NetworkMode: !Ref ECSNetworkMode
      ContainerDefinitions:
        - Name: memcached-0
          Image: memcached:1.6.7
          Essential: true
          MountPoints: []
          PortMappings:
            - Protocol: tcp
              ContainerPort: 11211
              HostPort: 11211
          DockerLabels:
            app: memcached
          Environment: []
          Secrets: []
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-create-group: 'True'
              awslogs-group: "/ecs/ecs-memcached-prometheus-demo"
              awslogs-region: !Ref AWS::Region
              awslogs-stream-prefix: "memcached-tutorial"
        - Name: memcached-exporter-0
          Image: prom/memcached-exporter:v0.7.0
          Command: !If
            - IsBridgeNetworking
            - ["--memcached.address=memcached-0:11211"]
            - !Ref 'AWS::NoValue'
          Essential: false
          MountPoints: []
          PortMappings:
            - Protocol: tcp
              ContainerPort: 9150
              HostPort: 9150
          Links:
            - !If
              - IsBridgeNetworking
              - "memcached-0"
              - !Ref 'AWS::NoValue'
          DockerLabels:
            job: prometheus-memcached
            app_x: memcached_exporter
          Environment: []
          Secrets: []
          LogConfiguration:
            LogDriver: awslogs
            Options:
              awslogs-create-group: 'True'
              awslogs-group: "/ecs/ecs-memcached-prometheus-demo"
              awslogs-region: !Ref AWS::Region
              awslogs-stream-prefix: "memcached-exporter-tutorial"
      RequiresCompatibilities:
        - EC2
      Cpu: '256'
      Memory: '512'
  ECSMemcachedService:
    Type: AWS::ECS::Service
    DependsOn: ECSMemcachedTaskDefinition
    Properties:
      Cluster: !Ref ECSClusterName
      DesiredCount: 1
      LaunchType: EC2
      SchedulingStrategy: REPLICA
      ServiceName: "memcached-prometheus-cloudwatch-agent-tutorial-ec2"
      TaskDefinition: !Ref ECSMemcachedTaskDefinition