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Side by Side Diff: chrome/browser/sync_file_system/remote_change_processor.h

Issue 12315004: Migrated sync_file_type and file_change from namespace fileapi to sync_file_system. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: rebase Created 7 years, 10 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_CHANGE_PROCESSOR_H_ 5 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_CHANGE_PROCESSOR_H_
6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_CHANGE_PROCESSOR_H_ 6 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_CHANGE_PROCESSOR_H_
7 7
8 #include "base/basictypes.h" 8 #include "base/basictypes.h"
9 #include "base/callback_forward.h" 9 #include "base/callback_forward.h"
10 #include "webkit/fileapi/syncable/sync_callbacks.h" 10 #include "webkit/fileapi/syncable/sync_callbacks.h"
11 #include "webkit/fileapi/syncable/sync_status_code.h" 11 #include "webkit/fileapi/syncable/sync_status_code.h"
12 12
13 namespace base { 13 namespace base {
14 class FilePath; 14 class FilePath;
15 } 15 }
16 16
17 namespace fileapi { 17 namespace fileapi {
18 class FileChange;
19 class FileChangeList;
20 class FileSystemURL; 18 class FileSystemURL;
21 class SyncFileMetadata; 19 class SyncFileMetadata;
22 } 20 }
23 21
24 namespace sync_file_system { 22 namespace sync_file_system {
25 23
24 class FileChange;
25 class FileChangeList;
26
26 // Represents an interface to process one remote change and applies 27 // Represents an interface to process one remote change and applies
27 // it to the local file system. 28 // it to the local file system.
28 // This interface is to be implemented/backed by LocalSyncFileService. 29 // This interface is to be implemented/backed by LocalSyncFileService.
29 class RemoteChangeProcessor { 30 class RemoteChangeProcessor {
30 public: 31 public:
31 // Callback type for PrepareForProcessRemoteChange. 32 // Callback type for PrepareForProcessRemoteChange.
32 // |file_type| indicates the current file/directory type of the target 33 // |file_type| indicates the current file/directory type of the target
33 // URL in the local filesystem. If the target URL does not exist it is 34 // URL in the local filesystem. If the target URL does not exist it is
34 // set to SYNC_FILE_TYPE_UNKNOWN. 35 // set to SYNC_FILE_TYPE_UNKNOWN.
35 // |changes| indicates a set of pending changes for the target URL. 36 // |changes| indicates a set of pending changes for the target URL.
36 typedef base::Callback<void( 37 typedef base::Callback<void(
37 fileapi::SyncStatusCode status, 38 fileapi::SyncStatusCode status,
38 const fileapi::SyncFileMetadata& metadata, 39 const fileapi::SyncFileMetadata& metadata,
39 const fileapi::FileChangeList& changes)> PrepareChangeCallback; 40 const FileChangeList& changes)> PrepareChangeCallback;
40 41
41 RemoteChangeProcessor() {} 42 RemoteChangeProcessor() {}
42 virtual ~RemoteChangeProcessor() {} 43 virtual ~RemoteChangeProcessor() {}
43 44
44 // This must be called before processing the change for the |url| 45 // This must be called before processing the change for the |url|
45 // for sync service |service_name|. 46 // for sync service |service_name|.
46 // This tries to lock the target |url| and returns the local changes 47 // This tries to lock the target |url| and returns the local changes
47 // if any. (The change returned by the callback is to make a decision 48 // if any. (The change returned by the callback is to make a decision
48 // on conflict resolution, but NOT for applying local changes to the remote, 49 // on conflict resolution, but NOT for applying local changes to the remote,
49 // which is supposed to be done by LocalChangeProcessor) 50 // which is supposed to be done by LocalChangeProcessor)
50 virtual void PrepareForProcessRemoteChange( 51 virtual void PrepareForProcessRemoteChange(
51 const fileapi::FileSystemURL& url, 52 const fileapi::FileSystemURL& url,
52 const std::string& service_name, 53 const std::string& service_name,
53 const PrepareChangeCallback& callback) = 0; 54 const PrepareChangeCallback& callback) = 0;
54 55
55 // This is called to apply the remote |change|. If the change type is 56 // This is called to apply the remote |change|. If the change type is
56 // ADD_OR_UPDATE for a file, |local_path| needs to point to a 57 // ADD_OR_UPDATE for a file, |local_path| needs to point to a
57 // local file path that contains the latest file image (e.g. a path 58 // local file path that contains the latest file image (e.g. a path
58 // to a temporary file which has the data downloaded from the server). 59 // to a temporary file which has the data downloaded from the server).
59 // This may fail with an error but should NOT result in a conflict 60 // This may fail with an error but should NOT result in a conflict
60 // (as we must have checked the change status in PrepareRemoteSync and 61 // (as we must have checked the change status in PrepareRemoteSync and
61 // have disabled any further writing). 62 // have disabled any further writing).
62 virtual void ApplyRemoteChange( 63 virtual void ApplyRemoteChange(
63 const fileapi::FileChange& change, 64 const FileChange& change,
64 const base::FilePath& local_path, 65 const base::FilePath& local_path,
65 const fileapi::FileSystemURL& url, 66 const fileapi::FileSystemURL& url,
66 const fileapi::SyncStatusCallback& callback) = 0; 67 const fileapi::SyncStatusCallback& callback) = 0;
67 68
68 // Clears all local changes. This should be called when the remote sync 69 // Clears all local changes. This should be called when the remote sync
69 // service reconciled or processed the existing local changes while 70 // service reconciled or processed the existing local changes while
70 // processing a remote change. 71 // processing a remote change.
71 virtual void ClearLocalChanges( 72 virtual void ClearLocalChanges(
72 const fileapi::FileSystemURL& url, 73 const fileapi::FileSystemURL& url,
73 const base::Closure& completion_callback) = 0; 74 const base::Closure& completion_callback) = 0;
74 75
75 // Records a fake local change so that the change will be processed in the 76 // Records a fake local change so that the change will be processed in the
76 // next local sync. 77 // next local sync.
77 // This is called when the remote side wants to trigger a local sync 78 // This is called when the remote side wants to trigger a local sync
78 // to propagate the local change to the remote change (e.g. to 79 // to propagate the local change to the remote change (e.g. to
79 // resolve a conflict by uploading the local file). 80 // resolve a conflict by uploading the local file).
80 virtual void RecordFakeLocalChange( 81 virtual void RecordFakeLocalChange(
81 const fileapi::FileSystemURL& url, 82 const fileapi::FileSystemURL& url,
82 const fileapi::FileChange& change, 83 const FileChange& change,
83 const fileapi::SyncStatusCallback& callback) = 0; 84 const fileapi::SyncStatusCallback& callback) = 0;
84 85
85 private: 86 private:
86 DISALLOW_COPY_AND_ASSIGN(RemoteChangeProcessor); 87 DISALLOW_COPY_AND_ASSIGN(RemoteChangeProcessor);
87 }; 88 };
88 89
89 } // namespace sync_file_system 90 } // namespace sync_file_system
90 91
91 #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_CHANGE_PROCESSOR_H_ 92 #endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_REMOTE_CHANGE_PROCESSOR_H_
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