Class: Rubber::Commands::Backup

Inherits:
Clamp::Command
  • Object
show all
Defined in:
lib/rubber/commands/util.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.description ⇒ Object 



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# File 'lib/rubber/commands/util.rb', line 69

def self.description
  "Performs a cyclical backup by storing the results of COMMAND to the backup\ndirectory (and the cloud)"
end

.subcommand_description ⇒ Object 



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# File 'lib/rubber/commands/util.rb', line 65

def self.subcommand_description
  "Performs a cyclical backup"
end

.subcommand_name ⇒ Object 



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# File 'lib/rubber/commands/util.rb', line 61

def self.subcommand_name
  "util:backup"
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/rubber/commands/util.rb', line 88

def execute
  signal_usage_error "NAME, DIRECTORY and COMMAND are required" unless name && directory && command
  
  # extra variables for command interpolation
  time_stamp = Time.now.strftime("%Y-%m-%d_%H-%M")
  dir = directory
  
  # differentiate by env
  cloud_prefix = "#{name}/"
  self.name = "#{Rubber.env}_#{self.name}"

  FileUtils.mkdir_p(directory)

  backup_cmd = command.gsub(/%([^%]+)%/, '#{\1}')
  backup_cmd = eval('%Q{' + backup_cmd + '}')

  puts "Backing up with command: '#{backup_cmd}'"
  system backup_cmd || fail("Command failed: '#{backup_cmd.inspect}'")
  puts "Backup created"

  backup_bucket = Rubber.cloud.env.backup_bucket
  if backup_bucket
    newest = Dir.entries(directory).grep(/^[^.]/).sort_by {|f| File.mtime(File.join(directory,f))}.last
    dest = "#{cloud_prefix}#{newest}"
    puts "Saving backup to cloud: #{backup_bucket}:#{dest}"
    Rubber.cloud.storage(backup_bucket).store(dest, open(File.join(directory, newest)))
  end

  tdate = Date.today - age
  threshold = Time.local(tdate.year, tdate.month, tdate.day)
  puts "Cleaning backups older than #{age} days"
  Dir["#{directory}/*"].each do |file|
    if File.mtime(file) < threshold
      puts "Deleting #{file}"
      FileUtils.rm_f(file)
    end
  end

  if backup_bucket
    puts "Cleaning cloud backups older than #{age} days from: #{backup_bucket}:#{cloud_prefix}"
    Rubber.cloud.storage(backup_bucket).walk_tree(cloud_prefix) do |f|
      if f.last_modified < threshold
        puts "Deleting #{f.key}"
        f.destroy
      end
    end
  end
end