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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CHROME_BROWSER_SYNC_ENGINE_GET_COMMIT_IDS_COMMAND_H_ | |
6 #define CHROME_BROWSER_SYNC_ENGINE_GET_COMMIT_IDS_COMMAND_H_ | |
7 #pragma once | |
8 | |
9 #include <utility> | |
10 #include <vector> | |
11 | |
12 #include "base/compiler_specific.h" | |
13 #include "chrome/browser/sync/engine/syncer_command.h" | |
14 #include "chrome/browser/sync/engine/syncer_util.h" | |
15 #include "chrome/browser/sync/sessions/ordered_commit_set.h" | |
16 #include "chrome/browser/sync/sessions/sync_session.h" | |
17 | |
18 using std::pair; | |
19 using std::vector; | |
20 | |
21 namespace browser_sync { | |
22 | |
23 class GetCommitIdsCommand : public SyncerCommand { | |
24 friend class SyncerTest; | |
25 | |
26 public: | |
27 explicit GetCommitIdsCommand(int commit_batch_size); | |
28 virtual ~GetCommitIdsCommand(); | |
29 | |
30 // SyncerCommand implementation. | |
31 virtual SyncerError ExecuteImpl(sessions::SyncSession* session) OVERRIDE; | |
32 | |
33 // Builds a vector of IDs that should be committed. | |
34 void BuildCommitIds(syncable::WriteTransaction* write_transaction, | |
35 const ModelSafeRoutingInfo& routes, | |
36 const std::set<int64>& ready_unsynced_set); | |
37 | |
38 // Fill |ready_unsynced_set| with all entries from |unsynced_handles| that | |
39 // are ready to commit. | |
40 // An entry is not considered ready for commit if any are true: | |
41 // 1. It's in conflict. | |
42 // 2. It requires encryption (either the type is encrypted but a passphrase | |
43 // is missing from the cryptographer, or the entry itself wasn't properly | |
44 // encrypted). | |
45 // 3. It's type is currently throttled. | |
46 // 4. It's a delete but has not been committed. | |
47 void FilterUnreadyEntries( | |
48 syncable::BaseTransaction* trans, | |
49 syncable::ModelTypeSet throttled_types, | |
50 syncable::ModelTypeSet encrypted_types, | |
51 bool passphrase_missing, | |
52 const syncable::Directory::UnsyncedMetaHandles& unsynced_handles, | |
53 std::set<int64>* ready_unsynced_set); | |
54 | |
55 private: | |
56 // Add all the uncommitted parents (and their predecessors) of |item| to | |
57 // |result| if they are ready to commit. Entries are added in root->child | |
58 // order and predecessor->successor order. | |
59 // Returns values: | |
60 // False: if a dependent item was in conflict, and hence no child cannot be | |
61 // committed. | |
62 // True: if all parents and their predecessors were checked for commit | |
63 // readiness and were added to |result| as necessary. | |
64 bool AddUncommittedParentsAndTheirPredecessors( | |
65 syncable::BaseTransaction* trans, | |
66 const ModelSafeRoutingInfo& routes, | |
67 const std::set<int64>& ready_unsynced_set, | |
68 const syncable::Entry& item, | |
69 sessions::OrderedCommitSet* result) const; | |
70 | |
71 // OrderedCommitSet helpers for adding predecessors in order. | |
72 | |
73 // Adds |item| to |result| if it's ready for committing and was not already | |
74 // present. | |
75 // Prereq: |item| is unsynced. | |
76 // Returns values: | |
77 // False: if |item| was in conflict. | |
78 // True: if |item| was checked for commit readiness and added to |result| | |
79 // as necessary. | |
80 bool AddItem(const std::set<int64>& ready_unsynced_set, | |
81 const syncable::Entry& item, | |
82 sessions::OrderedCommitSet* result) const; | |
83 | |
84 // Adds item and all it's unsynced predecessors to |result| as necessary, as | |
85 // long as no item was in conflict. | |
86 // Return values: | |
87 // False: if there was an entry in conflict. | |
88 // True: if all entries were checked for commit readiness and added to | |
89 // |result| as necessary. | |
90 bool AddItemThenPredecessors(syncable::BaseTransaction* trans, | |
91 const std::set<int64>& ready_unsynced_set, | |
92 const syncable::Entry& item, | |
93 sessions::OrderedCommitSet* result) const; | |
94 | |
95 // Appends all commit ready predecessors of |item|, followed by |item| itself, | |
96 // to |ordered_commit_set_|, iff item and all its predecessors not in | |
97 // conflict. | |
98 // Return values: | |
99 // False: if there was an entry in conflict. | |
100 // True: if all entries were checked for commit readiness and added to | |
101 // |result| as necessary. | |
102 bool AddPredecessorsThenItem(syncable::BaseTransaction* trans, | |
103 const ModelSafeRoutingInfo& routes, | |
104 const std::set<int64>& ready_unsynced_set, | |
105 const syncable::Entry& item, | |
106 sessions::OrderedCommitSet* result) const; | |
107 | |
108 bool IsCommitBatchFull() const; | |
109 | |
110 void AddCreatesAndMoves(syncable::WriteTransaction* write_transaction, | |
111 const ModelSafeRoutingInfo& routes, | |
112 const std::set<int64>& ready_unsynced_set); | |
113 | |
114 void AddDeletes(syncable::WriteTransaction* write_transaction, | |
115 const std::set<int64>& ready_unsynced_set); | |
116 | |
117 scoped_ptr<sessions::OrderedCommitSet> ordered_commit_set_; | |
118 | |
119 int requested_commit_batch_size_; | |
120 | |
121 DISALLOW_COPY_AND_ASSIGN(GetCommitIdsCommand); | |
122 }; | |
123 | |
124 } // namespace browser_sync | |
125 | |
126 #endif // CHROME_BROWSER_SYNC_ENGINE_GET_COMMIT_IDS_COMMAND_H_ | |
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