{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "Lab IDE using existing Subnet for container workshop v0.5",
  "Metadata": {},
  "Parameters": {
    "SubnetId": {
      "Description": "Public Subnet for the Lab IDE.",
      "Type": "AWS::EC2::Subnet::Id",
      "Default": ""
    }
  },
  "Mappings": {},
  "Conditions": {},
  "Resources": {
    "EksVpc": {
      "Type" : "AWS::CloudFormation::Stack",
      "Properties" : {
        "TemplateURL" : "https://amazon-eks.s3-us-west-2.amazonaws.com/1.10.3/2018-06-05/amazon-eks-vpc-sample.yaml"
      }
    },
    "EksServiceRole": {
      "Type" : "AWS::CloudFormation::Stack",
      "Properties" : {
        "TemplateURL" : "https://amazon-eks.s3-us-west-2.amazonaws.com/1.10.3/2018-06-05/amazon-eks-service-role.yaml"
      }
    },
    "LabIDE": {
      "Description": "-",
      "Type": "AWS::Cloud9::EnvironmentEC2",
      "Properties": {
        "Description": "Lab IDE for container workshop",
        "AutomaticStopTimeMinutes": 60,
        "InstanceType": "t2.micro",
        "Name": {
          "Ref": "AWS::StackName"
        },
        "SubnetId": {
          "Ref": "SubnetId"
        }
      }
    },
    "KopsStateStore": {
      "Description": "-",
      "Type": "AWS::S3::Bucket",
      "Properties": {
        "VersioningConfiguration": {
          "Status": "Enabled"
        }
      }
    },
    "LabIdeRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [
            {
              "Effect": "Allow",
              "Principal": {
                "Service": [
                  "ec2.amazonaws.com"
                ]
              },
              "Action": [
                "sts:AssumeRole"
              ]
            }
          ]
        },
        "Policies": [
          {
            "PolicyName": "eks-service",
            "PolicyDocument": {
              "Version": "2012-10-17",
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": [
                    "eks:*",
                    "cloudformation:CreateStack",
                    "cloudformation:UpdateStack"
                  ],
                  "Resource": "*"
                }
              ]
            }
          }
        ],
        "ManagedPolicyArns": [
          "arn:aws:iam::aws:policy/AmazonEC2FullAccess",
          "arn:aws:iam::aws:policy/AmazonRoute53FullAccess",
          "arn:aws:iam::aws:policy/AmazonS3FullAccess",
          "arn:aws:iam::aws:policy/IAMFullAccess",
          "arn:aws:iam::aws:policy/AmazonVPCFullAccess",
          "arn:aws:iam::aws:policy/AWSCloudFormationReadOnlyAccess"
        ],
        "Path": "/"
      }
    },
    "LabIdeInstanceProfile": {
      "Type": "AWS::IAM::InstanceProfile",
      "Properties": {
        "Path": "/",
        "Roles": [
          {
            "Ref": "LabIdeRole"
          }
        ]
      }
    },
    "AddRoleToInstance": {
      "Description": "Add LabIdeRole to Cloud9 IDE Instance",
      "Type": "Custom::AddRoleToInstance",
      "DependsOn": [
        "AddRoleToInstanceFunction",
        "KopsStateStore"
      ],
      "Properties": {
        "ServiceToken": {
          "Fn::GetAtt": [
            "AddRoleToInstanceFunction",
            "Arn"
          ]
        },
        "Region": {
          "Ref": "AWS::Region"
        },
        "StackName": {
          "Ref": "AWS::StackName"
        },
        "EnvironmentId": {
          "Ref": "LabIDE"
        },
        "LabIdeInstanceProfileName": {
          "Ref": "LabIdeInstanceProfile"
        },
        "LabIdeInstanceProfileArn": {
          "Fn::GetAtt": [
            "LabIdeInstanceProfile",
            "Arn"
          ]
        },
        "BucketName": {
          "Ref": "KopsStateStore"
        }
      }
    },
    "AddRoleToInstanceFunction": {
      "Type": "AWS::Lambda::Function",
      "Properties": {
        "Code": {
          "ZipFile": {
            "Fn::Join": [
              "\n",
              [
                "from __future__ import print_function",
                "import boto3",
                "import logging",
                "import json",
                "import time",
                "import traceback",
                "import cfnresponse",
                "",
                "logger = logging.getLogger()",
                "logger.setLevel(logging.INFO)",
                "",
                "def handler(event, context):",
                "    logger.debug('Event: {}'.format(event))",
                "    logger.debug('Context: {}'.format(context))",
                "    responseData = {}",
                "    ",
                "    # Immediately respond on Delete",
                "    if event['RequestType'] == 'Delete':",
                "        # Empty Bucket before CloudFormation deletes it",
                "        session = boto3.Session()",
                "        s3 = session.resource(service_name='s3')",
                "        try:",
                "            bucket = s3.Bucket(event['ResourceProperties']['BucketName'])",
                "            bucket.object_versions.delete()",
                "            ",
                "            logger.info('Bucket '+event['ResourceProperties']['BucketName']+' objects/versions deleted.')",
                "            cfnresponse.send(event, context, cfnresponse.SUCCESS, responseData, 'CustomResourcePhysicalID')",
                "        except Exception as e:",
                "            logger.error(e, exc_info=True)",
                "            responseData = {'Error': traceback.format_exc(e)}",
                "            cfnresponse.send(event, context, cfnresponse.FAILED, responseData, 'CustomResourcePhysicalID')",
                "    ",
                "    if event['RequestType'] == 'Create':",
                "        try:",
                "            # Open AWS clients",
                "            ec2 = boto3.client('ec2')",
                "            ",
                "            # Get the InstanceId of the Cloud9 IDE",
                "            instance = ec2.describe_instances(Filters=[{'Name': 'tag:Name','Values': ['aws-cloud9-'+event['ResourceProperties']['StackName']+'-'+event['ResourceProperties']['EnvironmentId']]}])['Reservations'][0]['Instances'][0]",
                "            ",
                "            # Create the IamInstanceProfile request object",
                "            iam_instance_profile = {",
                "                'Arn': event['ResourceProperties']['LabIdeInstanceProfileArn'],",
                "                'Name': event['ResourceProperties']['LabIdeInstanceProfileName']",
                "            }",
                "            ",
                "            # Wait for Instance to become ready before adding Role",
                "            instance_state = instance['State']['Name']",
                "            while instance_state != 'running':",
                "                time.sleep(5)",
                "                instance_state = ec2.describe_instances(InstanceIds=[instance['InstanceId']])",
                "            ec2.associate_iam_instance_profile(IamInstanceProfile=iam_instance_profile, InstanceId=instance['InstanceId'])",
                "            ",
                "            responseData = {'Success': 'Role added to instance'+instance['InstanceId']+'.'}",
                "            cfnresponse.send(event, context, cfnresponse.SUCCESS, responseData, 'CustomResourcePhysicalID')",
                "        except Exception as e:",
                "            logger.error(e, exc_info=True)",
                "            responseData = {'Error': traceback.format_exc(e)}",
                "            cfnresponse.send(event, context, cfnresponse.FAILED, responseData, 'CustomResourcePhysicalID')"
              ]
            ]
          }
        },
        "Handler": "index.handler",
        "Role": {
          "Fn::GetAtt": [
            "LambdaExecutionRole",
            "Arn"
          ]
        },
        "Runtime": "python2.7",
        "Timeout": "30"
      }
    },
    "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": "root",
            "PolicyDocument": {
              "Version": "2012-10-17",
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": [
                    "logs:CreateLogGroup",
                    "logs:CreateLogStream",
                    "logs:PutLogEvents"
                  ],
                  "Resource": "arn:aws:logs:*:*:*"
                },
                {
                  "Effect": "Allow",
                  "Action": [
                    "cloudformation:DescribeStacks",
                    "cloudformation:DescribeStackEvents",
                    "cloudformation:DescribeStackResource",
                    "cloudformation:DescribeStackResources",
                    "ec2:DescribeInstances",
                    "ec2:AssociateIamInstanceProfile",
                    "ec2:ReplaceIamInstanceProfileAssociation",
                    "iam:ListInstanceProfiles",
                    "iam:PassRole"
                  ],
                  "Resource": "*"
                },
                {
                  "Effect": "Allow",
                  "Action": [
                    "s3:*"
                  ],
                  "Resource": [
                    {
                      "Fn::GetAtt": [
                        "KopsStateStore",
                        "Arn"
                      ]
                    },
                    {
                      "Fn::Join": [
                        "",
                        [
                          {
                            "Fn::GetAtt": [
                              "KopsStateStore",
                              "Arn"
                            ]
                          },
                          "/*"
                        ]
                      ]
                    }
                  ]
                }
              ]
            }
          }
        ]
      }
    }
  },
  "Outputs": {
    "Cloud9IDE": {
      "Value": {
        "Fn::Join": [
          "",
          [
            "https://",
            {
              "Ref": "AWS::Region"
            },
            ".console.aws.amazon.com/cloud9/ide/",
            {
              "Ref": "LabIDE"
            },
            "?region=",
            {
              "Ref": "AWS::Region"
            }
          ]
        ]
      }
    },
    "EksServiceRoleArn": {
      "Value": {
        "Fn::GetAtt": ["EksServiceRole", "Outputs.RoleArn"]
      }
    },
    "EksVpcId": {
      "Value": {
        "Fn::GetAtt": ["EksVpc", "Outputs.VpcId"]
      }
    },
    "EksVpcSubnetIds": {
      "Value": {
        "Fn::GetAtt": ["EksVpc", "Outputs.SubnetIds"]
      }
    },
    "EksVpcSecurityGroups": {
      "Value": {
        "Fn::GetAtt": ["EksVpc", "Outputs.SecurityGroups"]
      }
    }
  }
}