{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "EC2 instanece to create EBS snapshot",
  "Mappings": {
  },


  "Parameters": {
    "InstanceType": {
      "Description" : "SnapshotServer EC2 instance type",
      "Type" : "String",
      "Default" : "t1.micro",
      "AllowedValues" : [ "t1.micro","m1.small","m1.medium","m1.large","m1.xlarge","m2.xlarge","m2.2xlarge","m2.4xlarge","m3.xlarge","m3.2xlarge","c1.medium","c1.xlarge","cc1.4xlarge","cc2.8xlarge","cg1.4xlarge"],
      "ConstraintDescription" : "must be a valid EC2 instance type."
    },

    "KeyName": {
      "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instance",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "255",
      "AllowedPattern" : "[\\x20-\\x7E]*",
      "Default" : "bbt-default",
      "ConstraintDescription" : "can contain only ASCII characters."
    },

    "SSHLocation" : {
      "Description": "Cidr for SSH access",
      "Type": "String",
      "MinLength": "9",
      "MaxLength": "18",
      "Default": "0.0.0.0/0",
      "AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})",
      "ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x."
    }
  },


  "Mappings": {
    "AvailabilityZoneMap": {
       "ap-northeast-1": { "AZa": "ap-northeast-1a", "AZb": "ap-northeast-1b", "AZc": "ap-northeast-1c" }
    },

    "AWSInstanceType2Arch" : {
      "t1.micro"    : { "Arch" : "64" },
      "m1.small"    : { "Arch" : "64" },
      "m1.medium"   : { "Arch" : "64" },
      "m1.large"    : { "Arch" : "64" },
      "m1.xlarge"   : { "Arch" : "64" },
      "m2.xlarge"   : { "Arch" : "64" },
      "m2.2xlarge"  : { "Arch" : "64" },
      "m2.4xlarge"  : { "Arch" : "64" },
      "m3.xlarge"   : { "Arch" : "64" },
      "m3.2xlarge"  : { "Arch" : "64" },
      "c1.medium"   : { "Arch" : "64" },
      "c1.xlarge"   : { "Arch" : "64" },
      "cc1.4xlarge" : { "Arch" : "64HVM" },
      "cc2.8xlarge" : { "Arch" : "64HVM" },
      "cg1.4xlarge" : { "Arch" : "64HVM" }
    },
    "AWSRegionArch2AMI" : {
      "ap-northeast-1" : { "32" : "ami-0b13700a", "64" : "ami-0d13700c", "64HVM" : "NOT_YET_SUPPORTED" }
    }
  },


  "Resources": {
    "IPAddress" : {
      "Type" : "AWS::EC2::EIP",
      "Properties" : {
        "Domain" : "vpc",
        "InstanceId" : { "Ref" : "SnapshotServer" }
      }
    },

    "SecurityGroupBase": {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Security Group Base",
        "SecurityGroupIngress" : [
          { "IpProtocol" : "tcp", "FromPort" : "22",  "ToPort" : "22", "CidrIp" : { "Ref" : "SSHLocation" }}
        ]
      }
    },

    "SnapshotServer": {
      "Type": "AWS::EC2::Instance",
      "Metadata" : {
        "AWS::CloudFormation::Init" : {
          "configSets" : {
            "orderby" : [ "install_package" ]
          },
          "install_package" : {
            "packages" : {
              "yum" : {
                "gcc" : [],
                "gcc-c++" : [],
                "make" : [],
                "git" : [],
                "libxml2-devel" : [],
                "libxslt-devel" : [],
                "libyaml-devel" : [],
                "libffi-devel" : [],
                "patch" : [],
                "readline-devel" : [],
                "openssl-devel" : [],
                "autoconf" : [],
                "automake" : [],
                "libtool" : [],
                "bison" : []
              }
            },
            "sources" : {
                "/home/ec2-user/bin" : "https://github.com/hashnao/aws/archive/master.zip"
            },
	    "files" : {
              "/tmp/setup_ebssnapshot" : {
                "content" : { "Fn::Join" : ["", [
                  "#!/bin/bash -v\n",
		  "chown -R ec2-user:ec2-user /home/ec2-user/bin\n",
                  "find /home/ec2-user/bin/ -type f -name '*.sh' -exec chmod 755 {} \\;\n",
                  "\n"
                ]]},
                "mode"  : "000755",
                "owner" : "root",
                "group" : "root"
              },
              "/tmp/install_ruby" : {
                "content" : { "Fn::Join" : ["", [
                  "#!/bin/bash -v\n",
                  "date '+%x %X'\n",
                  "\\curl -L https://get.rvm.io | bash -s stable\n",
                  "source $HOME/.bashrc\n",
                  "source $HOME/.bash_profile\n",
                  "date '+%x %X'\n",
                  "$HOME/.rvm/bin/rvm install 2.0.0\n",
                  "source $HOME/.bash_profile\n",
                  "date '+%x %X'\n",
                  "rvm use 2.0.0 --default\n",
                  "date '+%x %X'\n",
                  "$HOME/.rvm/rubies/default/bin/gem i aws-sdk\n",
                  "\n"
                ]]},
                "mode"  : "000755",
                "owner" : "ec2-user",
                "group" : "ec2-user"
              }
            },
            "commands" : {
              "setup_ebssnapshot" : {
                "command" : "/tmp/setup_ebssnapshot> /tmp/setup_ebssnapshot.log 2>&1"
              },
              "install_ruby" : {
                "command" : "su -l ec2-user -c '/tmp/install_ruby > /tmp/install_ruby.log 2>&1'"
              }
            }
          }
        }
      },
      "Properties": {
        "ImageId" : {
          "Fn::FindInMap" : [
            "AWSRegionArch2AMI", { "Ref" : "AWS::Region" }, { "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] }
          ]
        },
        "InstanceType": { "Ref" : "InstanceType" },
        "SecurityGroups" : [ {"Ref" : "SecurityGroupBase"} ],
        "DisableApiTermination": "FALSE",
        "KeyName": { "Ref": "KeyName" },
        "Monitoring": "false",
        "UserData" : {
          "Fn::Base64" : { "Fn::Join" : ["", [
          "#!/bin/bash -v\n",

          "# Helper function\n",
          "function error_exit\n",
          "{\n",
          "  /opt/aws/bin/cfn-signal -e 1 -r \"$1\" '", { "Ref" : "WaitHandle" }, "'\n",
          "  exit 1\n",
          "}\n",

          "# Install libraries\n",
          "  /opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackId" }, " -r SnapshotServer -c orderby",
          "  --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",

          "# Install libraries\n",
          "yum -y groupinstall \"Development libraries\" \"Development tools\"\n",

          "# Install jq\n",
          "wget -O- http://stedolan.github.io/jq/download/source/jq-1.3.tar.gz | tar zx\n",
          "cd jq-1.3\n",
          "./configure && make && make install\n",

          "# All is well so signal success\n",
          "  /opt/aws/bin/cfn-signal -e \"$?\" -r \"Cloud-Init setup completed\" '", { "Ref" : "WaitHandle" }, "'\n"
          ] ] }
        }
      }
    },

    "WaitHandle" : {
      "Type" : "AWS::CloudFormation::WaitConditionHandle"
    },

    "WaitCondition" : {
      "Type" : "AWS::CloudFormation::WaitCondition",
      "DependsOn" : "SnapshotServer",
      "Properties" : {
        "Handle" : { "Ref" : "WaitHandle" },
        "Timeout" : "1200"
      }
    }
  },


  "Outputs": {
    "InstanceType": {
      "Description": "InstanceType",
      "Value": { "Ref": "InstanceType" }
    },

    "IPAddress" : {
      "Description": "IPAddress",
      "Value": { "Ref": "SnapshotServer" }
    },

    "SnapshotServer": {
      "Description": "SnapshotServer",
      "Value": { "Ref": "SnapshotServer" }
    },

    "SSHLocation": {
      "Description": "SSHLocation",
      "Value": { "Ref": "SSHLocation" }
    }
  }
}