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

  "Description" : "AWS CloudFormation Sample Template Drupal_Single_Instance.\n Drupal is an open source content management platform powering millions of websites and applications.\n This template installs a singe instance deployment with a local MySQL database for storage.\n It uses the AWS CloudFormation bootstrap scripts to install packages and files at instance launch time.\n\n **WARNING**\n This template creates an Amazon EC2 instance.\n You will be billed for the AWS resources used if you create a stack from this template.\n",

  "Parameters" : {

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

    "InstanceType" : {
      "Description" : "WebServer EC2 instance type",
      "Type" : "String",
      "Default" : "m1.small",
      "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."
    },

    "SiteName": {
      "Default": "My Site",
      "Description" : "The name of the Drupal Site",
      "Type": "String"
    },

    "SiteEMail": {
      "Description" : "EMail for site adminitrator",
      "Type": "String"
    },

    "SiteAdmin": {
      "Description" : "The Drupal site admin account username",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "16",
      "AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
      "ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
    },

    "SitePassword": {
      "NoEcho": "true",
      "Description" : "The Drupal site admin account password",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "41",
      "AllowedPattern" : "[a-zA-Z0-9]*",
      "ConstraintDescription" : "must contain only alphanumeric characters."
    },

    "DBName": {
      "Default": "drupaldb",
      "Description" : "The Drupal database name",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "64",
      "AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
      "ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
    },

    "DBUsername": {
      "Default": "admin",
      "NoEcho": "true",
      "Description" : "The Drupal database admin account username",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "16",
      "AllowedPattern" : "[a-zA-Z][a-zA-Z0-9]*",
      "ConstraintDescription" : "must begin with a letter and contain only alphanumeric characters."
    },

    "DBPassword": {
      "Default": "admin",
      "NoEcho": "true",
      "Description" : "The Drupal database admin account password",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "41",
      "AllowedPattern" : "[a-zA-Z0-9]*",
      "ConstraintDescription" : "must contain only alphanumeric characters."
    },

    "DBRootPassword": {
      "NoEcho": "true",
      "Description" : "Root password for MySQL",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "41",
      "AllowedPattern" : "[a-zA-Z0-9]*",
      "ConstraintDescription" : "must contain only alphanumeric characters."
    },
    "SSHLocation" : {
      "Description" : "The IP address range that can be used to SSH to the EC2 instances",
      "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" : {
    "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" : {
      "us-east-1"      : { "32" : "ami-a0cd60c9", "64" : "ami-aecd60c7", "64HVM" : "ami-a8cd60c1" },
      "us-west-2"      : { "32" : "ami-46da5576", "64" : "ami-48da5578", "64HVM" : "NOT_YET_SUPPORTED" },
      "us-west-1"      : { "32" : "ami-7d4c6938", "64" : "ami-734c6936", "64HVM" : "NOT_YET_SUPPORTED" },
      "eu-west-1"      : { "32" : "ami-61555115", "64" : "ami-6d555119", "64HVM" : "ami-67555113" },
      "ap-southeast-1" : { "32" : "ami-220b4a70", "64" : "ami-3c0b4a6e", "64HVM" : "NOT_YET_SUPPORTED" },
      "ap-southeast-2" : { "32" : "ami-b3990e89", "64" : "ami-bd990e87", "64HVM" : "NOT_YET_SUPPORTED" },
      "ap-northeast-1" : { "32" : "ami-2a19aa2b", "64" : "ami-2819aa29", "64HVM" : "NOT_YET_SUPPORTED" },
      "sa-east-1"      : { "32" : "ami-f836e8e5", "64" : "ami-fe36e8e3", "64HVM" : "NOT_YET_SUPPORTED" }
    }
  },

  "Resources" : {

  "WebServer": {
      "Type": "AWS::EC2::Instance",
      "Metadata" : {
        "AWS::CloudFormation::Init" : {
          "config" : {
            "packages" : {
              "yum" : {
                "httpd"        : [],
                "php"          : [],
                "php-mysql"    : [],
                "php-gd"       : [],
                "php-xml"      : [],
                "php-mbstring" : [],
                "mysql"        : [],
                "mysql-server" : [],
                "mysql-devel"  : [],
                "mysql-libs"   : []

              }
            },

            "sources" : {
              "/var/www/html"  : "http://ftp.drupal.org/files/projects/drupal-7.8.tar.gz",
              "/home/ec2-user" : "http://ftp.drupal.org/files/projects/drush-7.x-4.5.tar.gz"
            },

            "files" : {
              "/tmp/setup.mysql" : {
                "content" : { "Fn::Join" : ["", [
                  "CREATE DATABASE ", { "Ref" : "DBName" }, ";\n",
                  "CREATE USER '", { "Ref" : "DBUsername" }, "'@'localhost' IDENTIFIED BY '", { "Ref" : "DBPassword" }, "';\n",
                  "GRANT ALL ON ", { "Ref" : "DBName" }, ".* TO '", { "Ref" : "DBUsername" }, "'@'localhost';\n",
                  "FLUSH PRIVILEGES;\n"
                  ]]},
                "mode"  : "000644",
                "owner" : "root",
                "group" : "root"
              }
            },

            "services" : {
              "sysvinit" : {
                "httpd"    : { "enabled" : "true", "ensureRunning" : "true" },
                "mysqld"   : { "enabled" : "true", "ensureRunning" : "true" },
                "sendmail" : { "enabled" : "false", "ensureRunning" : "false" }
              }
            }
          }
        }
      },
      "Properties": {
        "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },
                          { "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] },
        "InstanceType"   : { "Ref" : "InstanceType" },
        "SecurityGroups" : [ {"Ref" : "WebServerSecurityGroup"} ],
        "KeyName"        : { "Ref" : "KeyName" },
        "UserData"       : { "Fn::Base64" : { "Fn::Join" : ["", [
          "#!/bin/bash -v\n",
          "yum update -y aws-cfn-bootstrap\n",


          "# Helper function\n",
          "function error_exit\n",
          "{\n",
          "  /opt/aws/bin/cfn-signal -e 0 -r \"$1\" '", { "Ref" : "WaitHandle" }, "'\n",
          "  exit 1\n",
          "}\n",

          "# Install Apache Web Server, MySQL, PHP and Drupal\n",
          "/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackId" }, " -r WebServer --region ",
          { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",

          "# Setup MySQL root password and create a user\n",
          "mysqladmin -u root password '", { "Ref" : "DBRootPassword" }, "' || error_exit 'Failed to initialize root password'\n",
          "mysql -u root --password='", { "Ref" : "DBRootPassword" }, "' < /tmp/setup.mysql || error_exit 'Failed to create database user'\n",

          "# Make changes to Apache Web Server configuration\n",
          "mv /var/www/html/drupal-7.8/* /var/www/html\n",
          "mv /var/www/html/drupal-7.8/.* /var/www/html\n",
          "rmdir /var/www/html/drupal-7.8\n",
          "sed -i 's/AllowOverride None/AllowOverride All/g'  /etc/httpd/conf/httpd.conf\n",
          "service httpd restart\n",

          "# Create the site in Drupal\n",
          "cd /var/www/html\n",
          "~ec2-user/drush/drush site-install standard --yes --site-name='",
          { "Ref" : "SiteName" }, "' --site-mail=", { "Ref" : "SiteEMail" },
          " --account-name=", { "Ref" : "SiteAdmin" }, " --account-pass=", { "Ref" : "SitePassword" },
          " --db-url=mysql://", { "Ref" : "DBUsername" }, ":", { "Ref" : "DBPassword" }, "@localhost/", { "Ref" : "DBName" },
          " --db-prefix=drupal_\n",
          "chown apache:apache sites/default/files\n",

          "# All is well so signal success\n",
          "/opt/aws/bin/cfn-signal -e 0 -r \"Drupal setup complete\" '", { "Ref" : "WaitHandle" }, "'\n"

        ]]}}
      }
    },

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

    "WaitCondition" : {
      "Type" : "AWS::CloudFormation::WaitCondition",
      "DependsOn" : "WebServer",
      "Properties" : {
        "Handle" : {"Ref" : "WaitHandle"},
        "Timeout" : "300"
      }
    },

    "WebServerSecurityGroup" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Enable HTTP access via port 80 and SSH access",
        "SecurityGroupIngress" : [
          {"IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0"},
          {"IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : { "Ref" : "SSHLocation"}}
        ]
      }
    }
  },

  "Outputs" : {
    "WebsiteURL" : {
      "Value" : { "Fn::Join" : ["", ["http://", { "Fn::GetAtt" : [ "WebServer", "PublicDnsName" ]}]] },
      "Description" : "Drupal Website"
    }
  }
}