Class: Snapshoter::Manager

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

Instance Method Summary collapse

Constructor Details

#initialize(config, provider) ⇒ Manager

Returns a new instance of Manager.



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# File 'lib/snapshoter/manager.rb', line 5

def initialize(config, provider)
  @config = config
  @provider = provider
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/snapshoter/manager.rb', line 10

def run
  # ensure we have the latest snapshot data
  @provider.refresh
  
  # First create all the snapshots
  @config.volumes.each do |volume|
    if should_take_snapshot(volume)
      if volume.freeze_mysql
        mysql = Mysql.connect(
                'localhost',
                volume.mysql_user, 
                volume.mysql_password,
                volume.mysql_port,
                volume.mysql_sock)
      else
        mysql = nil
      end
    
      logger.debug "[Volume #{volume}] Starting snapshot"
      success = false
      begin
        lock_mysql(mysql) if mysql
        freeze_xfs(volume.mount_point) if volume.freeze_xfs
        @provider.snapshot_volume(volume)
      rescue Exception => e
        logger.error "[Volume #{volume}] There was a problem creating snapshot!"
        logger.error e.message
        logger.error e.backtrace.join("\n")
      ensure
        unfreeze_xfs(volume.mount_point) if volume.freeze_xfs
        if mysql
          unlock_mysql(mysql)
          mysql.close
        end
      end
    end
  end
  
  # ensure we have the latest snapshot data
  @provider.refresh
  
  # Then cleanup old snapshots
  @config.volumes.each do |volume|
    delete_old_snapshots(volume)
  end
end