Class: OsCtld::Commands::Self::Shutdown

Inherits:
Base
  • Object
show all
Defined in:
lib/osctld/commands/self/shutdown.rb

Instance Attribute Summary

Attributes inherited from Base

#client, #client_handler, #id, #opts

Instance Method Summary collapse

Methods inherited from Base

#base_execute, #call_cmd, #call_cmd!, cmd, #error, #error!, handle, #handled, #indirect?, #initialize, #manipulate, #manipulation_holder, #ok, #progress, #request_stop, run, run!

Constructor Details

This class inherits a constructor from OsCtld::Commands::Base

Instance Method Details

#execute ⇒ Object 



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# File 'lib/osctld/commands/self/shutdown.rb', line 7

def execute
  # Make sure that osctld crash/restart will not stop the shutdown
  Daemon.get.begin_shutdown

  # Grab manipulation locks of all pools
  grab_pools

  # Disable all pools
  DB::Pools.get.each do |pool|
    progress("Disabling pool #{pool.name}")
    pool.exclusively { pool.disable }
  end

  # Grab manipulation locks of all containers
  grab_all_cts

  # Export pools one by one
  DB::Pools.get.each do |pool|
    progress("Exporting pool #{pool.name}")

    call_cmd!(
      Commands::Pool::Export,
      name: pool.name,
      force: true,
      grab_containers: false,
      stop_containers: true,
      unregister_users: false,
    )
  end

  # Confirm the shutdown for anyone waiting for it, i.e. osctl shutdown
  Daemon.get.confirm_shutdown

  ok
end

#grab_all_cts ⇒ Object (protected) 



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# File 'lib/osctld/commands/self/shutdown.rb', line 65

def grab_all_cts
  progress('Grabbing all containers')
  cts = DB::Containers.get

  loop do
    cts.delete_if do |ct|
      begin
        ct.acquire_manipulation_lock(self)
        true

      rescue ResourceLocked => e
        progress(e.message)
        false
      end
    end

    break if cts.empty?
    sleep(1)
  end
end

#grab_pools ⇒ Object (protected) 



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# File 'lib/osctld/commands/self/shutdown.rb', line 44

def grab_pools
  progress('Grabbing pools')
  pools = DB::Pools.get

  loop do
    pools.delete_if do |pool|
      begin
        pool.acquire_manipulation_lock(self)
        true

      rescue ResourceLocked => e
        progress(e.message)
        false
      end
    end

    break if pools.empty?
    sleep(1)
  end
end