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| 1 // Copyright 2013 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 #include "sync/syncable/syncable_delete_journal.h" | |
| 6 | |
| 7 #include <stddef.h> | |
| 8 #include <stdint.h> | |
| 9 | |
| 10 #include "base/stl_util.h" | |
| 11 #include "sync/internal_api/public/base/model_type.h" | |
| 12 | |
| 13 namespace syncer { | |
| 14 namespace syncable { | |
| 15 | |
| 16 DeleteJournal::DeleteJournal(JournalIndex* initial_journal) { | |
| 17 CHECK(initial_journal); | |
| 18 delete_journals_.swap(*initial_journal); | |
| 19 } | |
| 20 | |
| 21 DeleteJournal::~DeleteJournal() { | |
| 22 STLDeleteElements(&delete_journals_); | |
| 23 } | |
| 24 | |
| 25 size_t DeleteJournal::GetDeleteJournalSize(BaseTransaction* trans) const { | |
| 26 DCHECK(trans); | |
| 27 return delete_journals_.size(); | |
| 28 } | |
| 29 | |
| 30 void DeleteJournal::UpdateDeleteJournalForServerDelete( | |
| 31 BaseTransaction* trans, bool was_deleted, const EntryKernel& entry) { | |
| 32 DCHECK(trans); | |
| 33 | |
| 34 // Should be sufficient to check server type only but check for local | |
| 35 // type too because of incomplete test setup. | |
| 36 if (!(IsDeleteJournalEnabled(entry.GetServerModelType()) || | |
| 37 IsDeleteJournalEnabled( | |
| 38 GetModelTypeFromSpecifics(entry.ref(SPECIFICS))))) { | |
| 39 return; | |
| 40 } | |
| 41 | |
| 42 JournalIndex::iterator it = delete_journals_.find(&entry); | |
| 43 | |
| 44 if (entry.ref(SERVER_IS_DEL)) { | |
| 45 if (it == delete_journals_.end()) { | |
| 46 // New delete. | |
| 47 EntryKernel* t = new EntryKernel(entry); | |
| 48 delete_journals_.insert(t); | |
| 49 delete_journals_to_purge_.erase(t->ref(META_HANDLE)); | |
| 50 } | |
| 51 } else { | |
| 52 // Undelete. This could happen in two cases: | |
| 53 // * An entry was deleted then undeleted, i.e. server delete was | |
| 54 // overwritten because of entry has unsynced data locally. | |
| 55 // * A data type was broken, i.e. encountered unrecoverable error, in last | |
| 56 // sync session and all its entries were duplicated in delete journals. | |
| 57 // On restart, entries are recreated from downloads and recreation calls | |
| 58 // UpdateDeleteJournals() to remove live entries from delete journals, | |
| 59 // thus only deleted entries remain in journals. | |
| 60 if (it != delete_journals_.end()) { | |
| 61 delete_journals_to_purge_.insert((*it)->ref(META_HANDLE)); | |
| 62 delete *it; | |
| 63 delete_journals_.erase(it); | |
| 64 } else if (was_deleted) { | |
| 65 delete_journals_to_purge_.insert(entry.ref(META_HANDLE)); | |
| 66 } | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 void DeleteJournal::GetDeleteJournals(BaseTransaction* trans, | |
| 71 ModelType type, | |
| 72 EntryKernelSet* deleted_entries) { | |
| 73 DCHECK(trans); | |
| 74 for (JournalIndex::const_iterator it = delete_journals_.begin(); | |
| 75 it != delete_journals_.end(); ++it) { | |
| 76 if ((*it)->GetServerModelType() == type || | |
| 77 GetModelTypeFromSpecifics((*it)->ref(SPECIFICS)) == type) { | |
| 78 deleted_entries->insert(*it); | |
| 79 } | |
| 80 } | |
| 81 passive_delete_journal_types_.Put(type); | |
| 82 } | |
| 83 | |
| 84 void DeleteJournal::PurgeDeleteJournals(BaseTransaction* trans, | |
| 85 const MetahandleSet& to_purge) { | |
| 86 DCHECK(trans); | |
| 87 JournalIndex::iterator it = delete_journals_.begin(); | |
| 88 while (it != delete_journals_.end()) { | |
| 89 int64_t handle = (*it)->ref(META_HANDLE); | |
| 90 if (to_purge.count(handle)) { | |
| 91 delete *it; | |
| 92 delete_journals_.erase(it++); | |
| 93 } else { | |
| 94 ++it; | |
| 95 } | |
| 96 } | |
| 97 delete_journals_to_purge_.insert(to_purge.begin(), to_purge.end()); | |
| 98 } | |
| 99 | |
| 100 void DeleteJournal::TakeSnapshotAndClear(BaseTransaction* trans, | |
| 101 EntryKernelSet* journal_entries, | |
| 102 MetahandleSet* journals_to_purge) { | |
| 103 DCHECK(trans); | |
| 104 // Move passive delete journals to snapshot. Will copy back if snapshot fails | |
| 105 // to save. | |
| 106 JournalIndex::iterator it = delete_journals_.begin(); | |
| 107 while (it != delete_journals_.end()) { | |
| 108 if (passive_delete_journal_types_.Has((*it)->GetServerModelType()) || | |
| 109 passive_delete_journal_types_.Has(GetModelTypeFromSpecifics( | |
| 110 (*it)->ref(SPECIFICS)))) { | |
| 111 journal_entries->insert(*it); | |
| 112 delete_journals_.erase(it++); | |
| 113 } else { | |
| 114 ++it; | |
| 115 } | |
| 116 } | |
| 117 *journals_to_purge = delete_journals_to_purge_; | |
| 118 delete_journals_to_purge_.clear(); | |
| 119 } | |
| 120 | |
| 121 void DeleteJournal::AddJournalBatch(BaseTransaction* trans, | |
| 122 const EntryKernelSet& entries) { | |
| 123 DCHECK(trans); | |
| 124 EntryKernel needle; | |
| 125 for (EntryKernelSet::const_iterator i = entries.begin(); | |
| 126 i != entries.end(); ++i) { | |
| 127 needle.put(ID, (*i)->ref(ID)); | |
| 128 if (delete_journals_.find(&needle) == delete_journals_.end()) { | |
| 129 delete_journals_.insert(new EntryKernel(**i)); | |
| 130 } | |
| 131 delete_journals_to_purge_.erase((*i)->ref(META_HANDLE)); | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 /* static */ | |
| 136 bool DeleteJournal::IsDeleteJournalEnabled(ModelType type) { | |
| 137 switch (type) { | |
| 138 case BOOKMARKS: | |
| 139 return true; | |
| 140 default: | |
| 141 return false; | |
| 142 } | |
| 143 } | |
| 144 | |
| 145 } // namespace syncable | |
| 146 } // namespace syncer | |
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Chromium Code Reviews
Issue 2130453004:
[Sync] Move //sync to //components/sync. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master