Method: Dbox::Syncer::Pull#execute

Defined in:
lib/dbox/syncer.rb

#execute ⇒ Object 



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# File 'lib/dbox/syncer.rb', line 178

def execute
  remove_tmpfiles
  dir = database.root_dir
  changes = calculate_changes(dir)
  log.debug "Executing changes:\n" + changes.map {|c| c.inspect }.join("\n")
  parent_ids_of_failed_entries = []
  changelist = { :created => [], :deleted => [], :updated => [], :failed => [] }

  changes.each do |op, c|
    case op
    when :create
      c[:parent_id] ||= lookup_id_by_path(c[:parent_path])
      if c[:is_dir]
        # create the local directory
        create_dir(c)
        database.add_entry(c[:path], true, c[:parent_id], c[:modified], c[:revision], c[:remote_hash], nil)
        changelist[:created] << c[:path]
      else
        # download the new file
        begin
          res = create_file(c)
          local_hash = calculate_hash(c[:local_path])
          database.add_entry(c[:path], false, c[:parent_id], c[:modified], c[:revision], c[:remote_hash], local_hash)
          changelist[:created] << c[:path]
          if res.kind_of?(Array) && res[0] == :conflict
            changelist[:conflicts] ||= []
            changelist[:conflicts] << res[1]
          end
        rescue Exception => e
          log.error "Error while downloading #{c[:path]}: #{e.inspect}\n#{e.backtrace.join("\n")}"
          parent_ids_of_failed_entries << c[:parent_id]
          changelist[:failed] << { :operation => :create, :path => c[:path], :error => e }
        end
      end
    when :update
      if c[:is_dir]
        # update the local directory
        update_dir(c)
        database.update_entry_by_path(c[:path], :modified => c[:modified], :revision => c[:revision], :remote_hash => c[:remote_hash])
        changelist[:updated] << c[:path]
      else
        # download updates to the file
        begin
          res = update_file(c)
          local_hash = calculate_hash(c[:local_path])
          database.update_entry_by_path(c[:path], :modified => c[:modified], :revision => c[:revision], :remote_hash => c[:remote_hash], :local_hash => local_hash)
          changelist[:updated] << c[:path]
          if res.kind_of?(Array) && res[0] == :conflict
            changelist[:conflicts] ||= []
            changelist[:conflicts] << res[1]
          end
        rescue Exception => e
          log.error "Error while downloading #{c[:path]}: #{e.inspect}\n#{e.backtrace.join("\n")}"
          parent_ids_of_failed_entries << c[:parent_id]
          changelist[:failed] << { :operation => :create, :path => c[:path], :error => e }
        end
      end
    when :delete
      # delete the local directory/file
      c[:is_dir] ? delete_dir(c) : delete_file(c)
      database.delete_entry_by_path(c[:path])
      changelist[:deleted] << c[:path]
    when :failed
      parent_ids_of_failed_entries << c[:parent_id]
      changelist[:failed] << { :operation => c[:operation], :path => c[:path], :error => c[:error] }
    else
      raise(RuntimeError, "Unknown operation type: #{op}")
    end
  end

  # clear hashes on any dirs with children that failed so that
  # they are processed again on next pull
  parent_ids_of_failed_entries.uniq.each do |id|
    database.update_entry_by_id(id, :remote_hash => nil)
  end

  # sort & return output
  sort_changelist(changelist)
end