chrome/browser/sync/test/integration/migration_waiter.h

   1 // Copyright 2014 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 CHROME_BROWSER_SYNC_TEST_INTEGRATION_MIGRATION_WAITER_H_
   6 #define CHROME_BROWSER_SYNC_TEST_INTEGRATION_MIGRATION_WAITER_H_
   7
   8 #include "base/macros.h"
   9 #include "chrome/browser/sync/test/integration/status_change_checker.h"
  10 #include "sync/internal_api/public/base/model_type.h"
  11
  12 class MigrationWatcher;
  13
  14 // Helper class that checks if the sync backend has successfully completed
  15 // migration for a set of data types.
  16 //
  17 // Collaborates with the MigrationWatcher, defined above.
  18 class MigrationWaiter : public StatusChangeChecker {
  19  public:
  20   // Initialize a waiter that will wait until |watcher|'s migrated types
  21   // match the provided |exptected_types|.
  22   MigrationWaiter(syncer::ModelTypeSet expected_types,
  23                   MigrationWatcher* watcher);
  24
  25   ~MigrationWaiter() override;
  26
  27   // Implementation of StatusChangeChecker.
  28   bool IsExitConditionSatisfied() override;
  29   std::string GetDebugMessage() const override;
  30
  31   // Function to trigger the waiting.
  32   void Wait();
  33
  34   // Callback invoked by our associated waiter when migration state changes.
  35   void OnMigrationStateChange();
  36
  37  private:
  38   // The MigrationWatcher we're observering.
  39   MigrationWatcher* const watcher_;
  40
  41   // The set of data types that are expected to eventually undergo migration.
  42   const syncer::ModelTypeSet expected_types_;
  43
  44   DISALLOW_COPY_AND_ASSIGN(MigrationWaiter);
  45 };
  46
  47 #endif  // CHROME_BROWSER_SYNC_TEST_INTEGRATION_MIGRATION_WAITER_H_