A ruby script containing utility methods for git projects using the NetDNA CDN.

netdna.rb

require 'rubygems'
require 'yaml'
require 'netdnarws'

#
# Utility methods for git projects using
# the NetDNA CDN. Put this file at the root of the project that 
# you wish to manage so that the paths match the resources in the 
# CDN.
#
# Example Gemfile:
#
# source "https://rubygems.org"
# gem 'netdnarws', '0.2.8'
#
# Run the script to check your configuration
# See -help for the available methods
#
class Netdna

  CONFIG_FILE = File.join(ENV['HOME'],'.netdna.yml')

  #
  # Load up the netdna config file and connect to the API
  # The location of the config file is defined in Netdna.CONFIG_FILE
  #
  def initialize
    @netdna_data = _load_netdna_data
    @api = NetDNARWS::NetDNA.new( @netdna_data['alias'], @netdna_data['key'], @netdna_data['secret'] )
  end

  #
  # Get Account information
  #
  def account
    @api.get("/account.json")
  end

  #
  # Print Account information
  #
  def list_account
    puts account
  end

  #
  # Get all types of Zones
  #
  def zones
    @api.get('/zones.json')
  end

  #
  # Print information on all types of Zones
  #
  def list_zones
    puts zones
  end

  #
  # Get all Pull Zones
  #
  def pull_zones
    @api.get('/zones/pull.json')
  end

  #
  # Print information on all Pull Zones
  #
  def list_pull_zones
    puts pull_zones
  end

  #
  # Get the ID of the main app-central pull zone
  #
  def pull_zone_id
    @netdna_data['pull_zone_id']
  end

  #
  # List the ID of the main app-central pull zone
  #
  def list_pull_zone_id
    puts pull_zone_id
  end

  #
  # Purge the full cache in the App Central Pull Zone
  # (by sending no argument or a nil argument) or purge a single file or an Array of filenames
  # file_or_files - The uri to purge or the Array of uris to be purged.
  #
  def purge( file_or_files=nil )
    if file_or_files.nil?
      puts "Purging all files from [#{pull_zone_id}]"
      @api.purge( pull_zone_id )
    else
      puts "Purging specific files from [#{pull_zone_id}]"
      puts "Files are [#{file_or_files}]"
      @api.purge( pull_zone_id, file_or_files )
    end
  end

  #
  # Purge all the files that have been changed between
  # HEAD (The most recent commit in the index) and
  # the commit_sha argument (This can be a normal SHA or HEAD^, HEAD~2, etc)
  # commit_sha the commit_sha to diff with HEAD (This can be a normal SHA or HEAD^, HEAD~2, etc)
  #
  def purge_all_since_commit( commit_sha )
    purge( git_files_changed( commit_sha ) )
  end

  #
  # Get all the files that have been changed between
  # HEAD (The most recent commit in the index) and
  # the commit_sha argument (This can be a normal SHA or HEAD^, HEAD~2, etc)
  # commit_sha the commit_sha to diff with HEAD (This can be a normal SHA or HEAD^, HEAD~2, etc)
  #
  def git_files_changed( commit_sha )
    files = `git diff --name-only HEAD #{commit_sha}`
    files = files.split(' ')
    files
  end

  #
  # List all the files that have been changed between
  # HEAD (The most recent commit in the index) and
  # the commit_sha argument (This can be a normal SHA or HEAD^, HEAD~2, etc)
  # commit_sha the commit_sha to diff with HEAD (This can be a normal SHA or HEAD^, HEAD~2, etc)
  #
  def list_git_files_changed( commit_sha )
    puts git_files_changed( commit_sha )
  end

  #
  # Check to make sure that the config file exists
  #
  def self.check_config_file
    File.exists?(Netdna::CONFIG_FILE)
  end

  private

  #
  # Load the netdna config file
  #
  def _load_netdna_data
    _load_yaml( Netdna::CONFIG_FILE )
  end

  # Load the yaml or throw an error
  # yaml_file - The path to the yaml file
  #
  def _load_yaml( yaml_file )
    # load the config
    throw "Oops, can't load the yaml file [#{yaml_file}]" unless yaml_file && File.exists?(yaml_file)
    YAML.load_file( yaml_file )
  end

end

if __FILE__==$0

  unless Netdna.check_config_file
    puts ""
    puts "Config file [#{Netdna::CONFIG_FILE}] is missing"
    puts ""
    puts "File contents should be:"
    puts <<-eos
      ---
        key: $VALUE_OF_API_KEY_FROM_MAXCDN_CONTROL_PANEL_GOES_HERE
        secret: $VALUE_OF_API_SECRET_FROM_MAXCDN_CONTROL_PANEL_GOES_HERE
        alias: $ALIAS
        pull_zone_id: $ZONE_ID

    eos
    exit
  end

  if ARGV.size < 1 || ARGV[0] =~ /\-help/
    puts
    puts "usage: #{File.basename(__FILE__)} -option args"
    ins_meths = Netdna.instance_methods(false)
    puts "----------------"
    puts "Options are:"
    ins_meths.each do | method |
      puts "-#{method}"
    end
    puts "-help"
    puts "----------------"
    puts "The name of the option that you want to run is NOT optional...not specifying an option will cause this message to be rendered"
    puts
    exit
  elsif ARGV[0] =~ /^-/
    Netdna.new.send( ARGV[0].sub('-',''), *ARGV[1..-1] )
  else
    #problem with the argument
    raise "Arguments [#{ARGV} are not the correct format"
  end
end