sync/engine/process_updates_command.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef SYNC_ENGINE_PROCESS_UPDATES_COMMAND_H_
   6 #define SYNC_ENGINE_PROCESS_UPDATES_COMMAND_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "sync/base/sync_export.h"
  10 #include "sync/engine/model_changing_syncer_command.h"
  11 #include "sync/engine/syncer_types.h"
  12
  13 namespace sync_pb {
  14 class SyncEntity;
  15 }
  16
  17 namespace syncer {
  18
  19 namespace syncable {
  20 class WriteTransaction;
  21 }
  22
  23 class Cryptographer;
  24
  25 // A syncer command for verifying and processing updates.
  26 //
  27 // Preconditions - Updates in the SyncerSesssion have been downloaded.
  28 //
  29 // Postconditions - All of the verified SyncEntity data will be copied to
  30 //                  the server fields of the corresponding syncable entries.
  31 class SYNC_EXPORT_PRIVATE ProcessUpdatesCommand
  32     : public ModelChangingSyncerCommand {
  33  public:
  34   ProcessUpdatesCommand();
  35   virtual ~ProcessUpdatesCommand();
  36
  37  protected:
  38   // ModelChangingSyncerCommand implementation.
  39   virtual std::set<ModelSafeGroup> GetGroupsToChange(
  40       const sessions::SyncSession& session) const OVERRIDE;
  41   virtual SyncerError ModelChangingExecuteImpl(
  42       sessions::SyncSession* session) OVERRIDE;
  43
  44  private:
  45   VerifyResult VerifyUpdate(
  46       syncable::WriteTransaction* trans,
  47       const sync_pb::SyncEntity& entry,
  48       ModelTypeSet requested_types,
  49       const ModelSafeRoutingInfo& routes);
  50   ServerUpdateProcessingResult ProcessUpdate(
  51       const sync_pb::SyncEntity& proto_update,
  52       const Cryptographer* cryptographer,
  53       syncable::WriteTransaction* const trans);
  54   DISALLOW_COPY_AND_ASSIGN(ProcessUpdatesCommand);
  55 };
  56
  57 }  // namespace syncer
  58
  59 #endif  // SYNC_ENGINE_PROCESS_UPDATES_COMMAND_H_