Class: Hookit::Resource::Zfs

Inherits:
Base
  • Object
show all
Defined in:
lib/hookit/resource/zfs.rb

Instance Attribute Summary

Attributes inherited from Base

#dict

Instance Method Summary collapse

Methods inherited from Base

#action, actions, #can_run?, default_action, #default_action, field, #not_if, #only_if

Constructor Details

#initialize(name) ⇒ Zfs

Returns a new instance of Zfs.



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# File 'lib/hookit/resource/zfs.rb', line 16

def initialize(name)
  snapshot(name) unless snapshot
  super
end

Instance Method Details

#clone! ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 72

def clone!
  run_command! "zfs clone #{snapshot} #{dataset}"
end

#destroy! ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 61

def destroy!
  `zfs list -t snapshot | grep #{snapshot}`
  if $?.exitstatus == 0
    run_command! "zfs destroy #{snapshot}"
  end 
end

#receive! ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 44

def receive!
  run_command! "#{source.to_s.strip} | zfs receive -F #{dataset}"
end

#rollback! ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 68

def rollback!
  run_command! "zfs rollback -r #{snapshot}"
end

#run(action) ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 21

def run(action)
  case action
  when :send
    send!
  when :receive
    receive!
  when :transmit
    transmit!
  when :snapshot
    snapshot!
  when :destroy
    destroy!
  when :rollback
    rollback!
  when :clone
    clone!
  end
end

#run_command!(cmd, expect_code = 0) ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 88

def run_command!(cmd, expect_code=0)
  res = `#{cmd}`
  code = $?.exitstatus
  if code != expect_code
    raise Hookit::Error::UnexpectedExit, "#{cmd} failed with exit code '#{code}'"
  end
  return validate!(res)
end

#send! ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 40

def send!
  run_command! "zfs send #{snapshot} | #{destination}"
end

#snapshot! ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 56

def snapshot!
  destroy!
  run_command! "zfs snapshot #{snapshot}"
end

#transmit! ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 48

def transmit!
  if ssh_host
    run_command! "zfs send #{options} #{snapshot} | ssh -o stricthostkeychecking=no #{ssh_host} zfs receive -F #{dataset}"
  else
    run_command! "zfs send #{options} #{snapshot} | zfs receive -F #{dataset}"
  end
end

#validate!(res) ⇒ Object 



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# File 'lib/hookit/resource/zfs.rb', line 76

def validate!(res)
  if validator.is_a? Proc
    if validator.call(res)
      res
    else
      raise "ERROR: execute resource \"#{name}\" failed validation!"
    end
  else
    res
  end
end