Class: RBackup

Inherits:
Object
  • Object
show all
Defined in:
lib/rbackup.rb

Constant Summary collapse

@@usage = 
<<-USAGE

Usage:
  rbackup [PROFILE]...
  
  PROFILE
    The name of the profile listed in your YAML configuration.

USAGE

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ RBackup

Returns a new instance of RBackup.



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# File 'lib/rbackup.rb', line 15

def initialize(*args)
  get_yaml
  get_profiles(args, @yaml)
end

Instance Attribute Details

#profiles ⇒ Object

Returns the value of attribute profiles.



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# File 'lib/rbackup.rb', line 13

def profiles
  @profiles
end

#yaml ⇒ Object

Returns the value of attribute yaml.



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# File 'lib/rbackup.rb', line 13

def yaml
  @yaml
end

Instance Method Details

#error(e) ⇒ Object 



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# File 'lib/rbackup.rb', line 51

def error(e)
  puts "\n  Error:\n    #{e}\n#{@@usage}"
  exit
end

#esc(paths) ⇒ Object 



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# File 'lib/rbackup.rb', line 56

def esc(paths)
  paths = paths.to_a
  paths.collect! { |path| path.gsub('SPEC', SPEC) } if $TESTING
  paths.collect  { |path| path.gsub(' ', '\ ') }.join(' ')
end

#get_profiles(input, hash, force = false) ⇒ Object 



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# File 'lib/rbackup.rb', line 20

def get_profiles(input, hash, force=false)
  @profiles ||= []
  hash.each do |key, value|
    next unless value.respond_to?(:keys)
    is_profile = value['source'] && value['destination']
    if input.include?(key) || input.empty? || force
      if is_profile
        @profiles << value
      else
        get_profiles(input, value, true)
      end
    elsif !is_profile
      get_profiles(input, value, force)
    end
  end
end

#get_yaml ⇒ Object 



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# File 'lib/rbackup.rb', line 37

def get_yaml
  if $TESTING
    config = SPEC + '/fixtures/rbackup.yml'
  else
    config = File.expand_path("~/.rbackup.yml")
  end
  if File.exists?(config)
    @yaml = File.open(config)
    @yaml = YAML::load(yaml)
  else
    error("YAML configuration not found.")
  end
end

#rsync(profile) ⇒ Object 



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# File 'lib/rbackup.rb', line 62

def rsync(profile)
  inc1ude = []
  exclude = []
  destination = profile['destination']
  source = profile['source'].to_a

  options = "--delete --numeric-ids --safe-links -axzSvL"
  # --delete                    delete extraneous files from dest dirs
  # --numeric-ids               don't map uid/gid values by user/group name
  # --safe-links                ignore symlinks that point outside the tree
  # -a, --archive               recursion and preserve almost everything (-rlptgoD)
  # -x, --one-file-system       don't cross filesystem boundaries
  # -z, --compress              compress file data during the transfer
  # -S, --sparse                handle sparse files efficiently
  # -v, --verbose               verbose
  
  if destination.include?(':') || source.include?(':')
    options += ' -e ssh'
    # -e, --rsh=COMMAND         specify the remote shell to use
  else
    options += 'E'
    # -E, --extended-attributes copy extended attributes, resource forks
    FileUtils.mkdir_p destination
  end
  
  if profile['include']
    exclude = %w(*) unless profile['exclude']
    inc1ude = profile['include'].to_a
  end

  if profile['exclude']
    exclude += profile['exclude'].to_a
  end
  
  inc1ude = inc1ude.collect { |i| "--include='#{i}'" }.join(' ')
  exclude = exclude.collect { |e| "--exclude='#{e}'" }.join(' ')
  # --exclude=PATTERN         use one of these for each file you want to exclude
  # --include-from=FILE       don't exclude patterns listed in FILE

  cmd = "rsync #{options} #{inc1ude} #{exclude} #{esc(source)} #{esc(destination)}"
  if $TESTING
    `#{cmd}`
  else
    puts "Executing: #{cmd}"
    system(cmd)
  end
end

#run ⇒ Object 



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# File 'lib/rbackup.rb', line 110

def run
  @profiles.each do |profile|
    rsync(profile)
  end
end