Module: ContentServer

Defined in:
lib/content_server/backup_server.rb,
lib/content_server.rb,
lib/content_server/version.rb,
lib/content_server/queue_copy.rb,
lib/content_server/file_streamer.rb,
lib/content_server/queue_indexer.rb,
lib/content_server/content_server.rb,
lib/content_server/remote_content.rb,
lib/content_server/content_receiver.rb

Overview

Content server. Monitors files, index local files, listen to backup server content, copy changes and new files to backup server.

Defined Under Namespace

Classes: ContentDataReceiver, ContentDataSender, FileCopyClient, FileCopyServer, FileReceiver, FileStreamer, QueueIndexer, RemoteContentClient, RemoteContentServer, Stream

Constant Summary collapse

VERSION = 
"1.0.2"

Class Method Summary collapse

Class Method Details

.run_backup_server ⇒ Object 



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# File 'lib/content_server/backup_server.rb', line 29

def run_backup_server
  Log.info('Start backup server')
  Thread.abort_on_exception = true
  all_threads = []

  @process_variables = ThreadSafeHash::ThreadSafeHash.new
  @process_variables.set('server_name', 'backup_server')

  # # # # # # # # # # # #
  # Initialize/Start monitoring
  Log.info('Start monitoring following directories:')
  Params['monitoring_paths'].each {|path|
    Log.info("  Path:'#{path['path']}'")
  }
  monitoring_events = Queue.new
  fm = FileMonitoring::FileMonitoring.new
  fm.set_event_queue(monitoring_events)
  # Start monitoring and writing changes to queue
  all_threads << Thread.new do
    fm.monitor_files
  end

  # # # # # # # # # # # # # #
  # Initialize/Start local indexer
  Log.debug1('Start indexer')
  local_server_content_data_queue = Queue.new
  queue_indexer = QueueIndexer.new(monitoring_events,
                                   local_server_content_data_queue,
                                   Params['local_content_data_path'])
  # Start indexing on demand and write changes to queue
  all_threads << queue_indexer.run

  # # # # # # # # # # # # # # # # # # # # # # # # # # #
  # Initialize/Start backup server content data sender
  Log.debug1('Start backup server content data sender')
  dynamic_content_data = ContentData::DynamicContentData.new
  #content_data_sender = ContentDataSender.new(
  #    Params['remote_server'],
  #    Params['remote_listening_port'])
  # Start sending to backup server
  all_threads << Thread.new do
    while true do
      Log.debug1 'Waiting on local server content data queue.'
      cd = local_server_content_data_queue.pop
      #    content_data_sender.send_content_data(cd)
      dynamic_content_data.update(cd)
    end
  end
  Params['backup_destination_folder'] = File.expand_path(Params['monitoring_paths'][0]['path'])
  Log.info("backup_destination_folder is:#{Params['backup_destination_folder']}")
  content_server_dynamic_content_data = ContentData::DynamicContentData.new
  remote_content = ContentServer::RemoteContentClient.new(content_server_dynamic_content_data,
                                                          Params['content_server_hostname'],
                                                          Params['content_server_data_port'],
                                                          Params['backup_destination_folder'])
  all_threads.concat(remote_content.run())

  file_copy_client = FileCopyClient.new(Params['content_server_hostname'],
                                        Params['content_server_files_port'],
                                        dynamic_content_data,
                                        @process_variables)
  all_threads.concat(file_copy_client.threads)

  # Each
  Log.info('Start remote and local contents comparator')
  all_threads << Thread.new do
    loop do
      sleep(Params['backup_check_delay'])
      local_cd = dynamic_content_data.last_content_data()
      remote_cd = content_server_dynamic_content_data.last_content_data()
      diff = ContentData::ContentData.remove(local_cd, remote_cd)
      #file_copy_client.request_copy(diff) unless diff.empty?
      if !diff.empty?
        Log.info('Start sync check. Backup and remote contents need a sync:')
        Log.debug2("Backup content:\n#{local_cd}")
        Log.debug2("Remote content:\n#{remote_cd}")
        Log.info("Missing contents:\n#{diff}")
        Log.info('Requesting copy files')
        file_copy_client.request_copy(diff)
      else
        Log.info("Start sync check. Local and remote contents are equal. No sync required.")
      end
    end
  end

  if Params['enable_monitoring']
    mon = Monitoring::Monitoring.new(@process_variables)
    Log.add_consumer(mon)
    all_threads << mon.thread
    monitoring_info = MonitoringInfo::MonitoringInfo.new(@process_variables)
  end

  all_threads.each { |t| t.abort_on_exception = true }
  all_threads.each { |t| t.join }
  # Should never reach this line.
end

.run_content_server ⇒ Object 



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# File 'lib/content_server/content_server.rb', line 26

def run_content_server
  Log.info('Content server start')
  all_threads = []

  @process_variables = ThreadSafeHash::ThreadSafeHash.new
  @process_variables.set('server_name', 'content_server')

  # # # # # # # # # # # #
  # Initialize/Start monitoring
  Log.info('Start monitoring following directories:')
  Params['monitoring_paths'].each {|path|
    Log.info("  Path:'#{path['path']}'")
  }
  monitoring_events = Queue.new
  fm = FileMonitoring::FileMonitoring.new
  fm.set_event_queue(monitoring_events)
  # Start monitoring and writing changes to queue
  all_threads << Thread.new do
    fm.monitor_files
  end

  # # # # # # # # # # # # # #
  # Initialize/Start local indexer
  Log.debug1('Start indexer')
  local_server_content_data_queue = Queue.new
  queue_indexer = QueueIndexer.new(monitoring_events,
                                   local_server_content_data_queue,
                                   Params['local_content_data_path'])
  # Start indexing on demand and write changes to queue
  all_threads << queue_indexer.run

  # # # # # # # # # # # # # # # # # # # # # #
  # Initialize/Start content data comparator
  Log.debug1('Start content data comparator')
  copy_files_events = Queue.new
  local_dynamic_content_data = ContentData::DynamicContentData.new
  all_threads << Thread.new do
    while true do
      # Note: This thread should be the only consumer of local_server_content_data_queue
      Log.debug1 'Waiting on local server content data.'
      local_server_content_data = local_server_content_data_queue.pop
      local_dynamic_content_data.update(local_server_content_data)
    end
  end

  remote_content_client = RemoteContentServer.new(local_dynamic_content_data,
                                                  Params['local_content_data_port'])
  all_threads << remote_content_client.tcp_thread

  # # # # # # # # # # # # # # # #
  # Start copying files on demand
  Log.debug1('Start copy data on demand')
  copy_server = FileCopyServer.new(copy_files_events, Params['local_files_port'])
  all_threads.concat(copy_server.run())

  if Params['enable_monitoring']
    mon = Monitoring::Monitoring.new(@process_variables)
    Log.add_consumer(mon)
    all_threads << mon.thread
    monitoring_info = MonitoringInfo::MonitoringInfo.new(@process_variables)
  end

  # Finalize server threads.
  all_threads.each { |t| t.abort_on_exception = true }
  all_threads.each { |t| t.join }
  # Should never reach this line.
end