{
	"AWSTemplateFormatVersion": "2010-09-09",

	"Description": "This template deploys the infrastructure for the re:Invent ENT312 session (Gogs - Autoscaling/ELB Post Migration). This template creates Amazon EC2 instances and related resources. You will be billed for the AWS resources used if you create a stack from this template.",

	"Parameters": {
		"VPCStackName": {
			"Description": "Name of an active CloudFormation stack that contains the networking/VPC resources, such as the subnet and security group, that will be used in this stack.",
			"Type": "String",
			"MinLength": 1,
			"MaxLength": 255,
			"AllowedPattern": "^[a-zA-Z][-a-zA-Z0-9]*$"
		},
		"InstanceType": {
			"AllowedValues": [
				"t2.micro",
				"t2.small",
				"t2.medium",
				"t2.large"
			],
			"Default": "t2.large",
			"Description": "Amazon EC2 instance type for the Gogs AutoScaling Instances",
			"Type": "String"
		},
		"KeyPairName": {
			"Description": "Public/private key pair",
			"Type": "AWS::EC2::KeyPair::KeyName"
		},
		"AMIID": {
			"Type": "String"
		},
		"GogsDNSName": {
			"Description": "Route53 Domain Alias that your want to point your ELB for Gogs AutoScaling",
			"Type": "String",
			"Default": "ent312.five0.ninja"
		}
	},

	"Mappings": {
		"AWSRegionArch2AMI": {
			"us-west-1": {
				"HVM64": "ami-adc03bcd"
			}
		}
	},

	"Resources": {
		"GogsELB": {
			"Type": "AWS::ElasticLoadBalancing::LoadBalancer",
			"Properties": {
				"CrossZone": "true",
				"HealthCheck": {
					"Target": "HTTP:3000/",
					"HealthyThreshold": "10",
					"UnhealthyThreshold": "2",
					"Interval": "30",
					"Timeout": "5"
				},
				"LoadBalancerName": "GogsELB",
				"Listeners": [{
					"LoadBalancerPort": "80",
					"InstancePort": "3000",
					"Protocol": "HTTP",
					"PolicyNames": ["GogsELBStickyPolicy"]
				}],
				"Subnets": [
				{"Fn::ImportValue": {"Fn::Sub": "${VPCStackName}-DestPublicSubnet1ID"}},
				{"Fn::ImportValue": {"Fn::Sub": "${VPCStackName}-DestPublicSubnet2ID"}}
				],
				"Scheme": "internet-facing",
				"SecurityGroups": [{
					"Fn::ImportValue": {
						"Fn::Sub": "${VPCStackName}-ENT312DemoDestELBSecurityGroupID"
					}
				}],
				"LBCookieStickinessPolicy": [{
					"PolicyName": "GogsELBStickyPolicy",
					"CookieExpirationPeriod": "300"
				}],
				"Tags": [{
					"Key": "Name",
					"Value": "GogsELB"
				}]
			}
		},
		"GogsLaunchConfiguration": {
			"Type": "AWS::AutoScaling::LaunchConfiguration",
			"Properties": {
				"AssociatePublicIpAddress": "true",
				"ImageId": {
					"Ref": "AMIID"
				},
				"InstanceType": {
					"Ref": "InstanceType"
				},
				"KeyName": {
					"Ref": "KeyPairName"
				},
				"SecurityGroups": [{
					"Fn::ImportValue": {
						"Fn::Sub": "${VPCStackName}-ENT312DemoDestInstanceSecurityGroupID"
					}
				}]

			}
		},
		"GogsAutoscaleGroup": {
			"Type": "AWS::AutoScaling::AutoScalingGroup",
			"Properties": {
				"Cooldown": "300",
				"MaxSize": "2",
				"MinSize": "2",
				"DesiredCapacity": "2",
				"HealthCheckGracePeriod": "300",
				"HealthCheckType": "EC2",
				"VPCZoneIdentifier": [{"Fn::Join" : [ "," , [
				{"Fn::ImportValue": {"Fn::Sub": "${VPCStackName}-DestPublicSubnet1ID"}},
				{"Fn::ImportValue": {"Fn::Sub": "${VPCStackName}-DestPublicSubnet2ID"}}
				]]}],
				"LaunchConfigurationName": {
					"Ref": "GogsLaunchConfiguration"
				},
				"LoadBalancerNames": [{
					"Ref": "GogsELB"
				}],
				"Tags": [{
					"Key": "Name",
					"Value": "GogsAutoScaling",
					"PropagateAtLaunch": true
				}]
			}
		},
		"GogsRoute53Alias": {
			"Type": "AWS::Route53::RecordSet",
			"Properties": {
				"Name": {"Fn::Join": ["", [{"Ref": "GogsDNSName"},"."]]},
				"HostedZoneName": {"Fn::Join": ["", [{"Ref": "GogsDNSName"},"."]]},
				"Type": "A",
				"AliasTarget": {
					"DNSName": {
						"Fn::GetAtt": [
							"GogsELB",
							"DNSName"
						]
					},
					"HostedZoneId": {
						"Fn::GetAtt": [
							"GogsELB",
							"CanonicalHostedZoneNameID"
						]
					}
				}
			}
		}
	},

	"Outputs": {
		"GogsELBDNSName": {
			"Value": {
				"Fn::GetAtt": [
					"GogsELB",
					"DNSName"
				]
			},
			"Description": "Public DNS Name for the GogsELB"
		}
	}
}