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.
5 #ifndef SYNC_ENGINE_SYNC_ENGINE_EVENT_LISTENER_H_
6 #define SYNC_ENGINE_SYNC_ENGINE_EVENT_LISTENER_H_
8 #include "base/time/time.h"
9 #include "sync/base/sync_export.h"
10 #include "sync/internal_api/public/base/model_type.h"
14 struct SyncProtocolError;
15 struct SyncCycleEvent;
17 class SYNC_EXPORT_PRIVATE SyncEngineEventListener {
19 SyncEngineEventListener();
21 // Generated at various points during the sync cycle.
22 virtual void OnSyncCycleEvent(const SyncCycleEvent& event) = 0;
24 // This event is sent when we receive an actionable error. It is up to
25 // the listeners to figure out the action to take using the error sent.
26 virtual void OnActionableError(const SyncProtocolError& error) = 0;
28 // This event is sent when scheduler decides to wait before next request
29 // either because it gets throttled by server or because it backs off after
30 // request failure. Retry time is passed in retry_time field of event.
31 virtual void OnRetryTimeChanged(base::Time retry_time) = 0;
33 // This event is sent when types are throttled or unthrottled.
34 virtual void OnThrottledTypesChanged(ModelTypeSet throttled_types) = 0;
36 // This event is sent when the server requests a migration.
37 virtual void OnMigrationRequested(ModelTypeSet migration_types) = 0;
40 virtual ~SyncEngineEventListener();
45 #endif // SYNC_ENGINE_SYNC_ENGINE_EVENT_LISTENER_H_