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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 #include "sync/syncable/on_disk_directory_backing_store.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/stl_util.h" | |
| 9 #include "base/metrics/histogram.h" | |
| 10 #include "sync/syncable/syncable-inl.h" | |
| 11 | |
| 12 namespace syncer { | |
| 13 namespace syncable { | |
| 14 | |
| 15 namespace { | |
| 16 | |
| 17 enum HistogramResultEnum { | |
| 18 FIRST_TRY_SUCCESS, | |
| 19 SECOND_TRY_SUCCESS, | |
| 20 SECOND_TRY_FAILURE, | |
| 21 RESULT_COUNT | |
| 22 }; | |
| 23 | |
| 24 } // namespace | |
| 25 | |
| 26 OnDiskDirectoryBackingStore::OnDiskDirectoryBackingStore( | |
| 27 const std::string& dir_name, | |
| 28 const base::FilePath& backing_file_path) | |
| 29 : DirectoryBackingStore(dir_name), backing_file_path_(backing_file_path) { | |
| 30 DCHECK(backing_file_path_.IsAbsolute()); | |
| 31 } | |
| 32 | |
| 33 OnDiskDirectoryBackingStore::~OnDiskDirectoryBackingStore() { | |
| 34 } | |
| 35 | |
| 36 DirOpenResult OnDiskDirectoryBackingStore::TryLoad( | |
| 37 Directory::MetahandlesMap* handles_map, | |
| 38 JournalIndex* delete_journals, | |
| 39 MetahandleSet* metahandles_to_purge, | |
| 40 Directory::KernelLoadInfo* kernel_load_info) { | |
| 41 DCHECK(CalledOnValidThread()); | |
| 42 | |
| 43 if (!IsOpen()) { | |
| 44 if (!Open(backing_file_path_)) | |
| 45 return FAILED_OPEN_DATABASE; | |
| 46 } | |
| 47 | |
| 48 if (!InitializeTables()) | |
| 49 return FAILED_OPEN_DATABASE; | |
| 50 | |
| 51 if (!LoadEntries(handles_map, metahandles_to_purge)) | |
| 52 return FAILED_DATABASE_CORRUPT; | |
| 53 if (!LoadDeleteJournals(delete_journals)) | |
| 54 return FAILED_DATABASE_CORRUPT; | |
| 55 if (!LoadInfo(kernel_load_info)) | |
| 56 return FAILED_DATABASE_CORRUPT; | |
| 57 if (!VerifyReferenceIntegrity(handles_map)) | |
| 58 return FAILED_DATABASE_CORRUPT; | |
| 59 | |
| 60 return OPENED; | |
| 61 } | |
| 62 | |
| 63 DirOpenResult OnDiskDirectoryBackingStore::Load( | |
| 64 Directory::MetahandlesMap* handles_map, | |
| 65 JournalIndex* delete_journals, | |
| 66 MetahandleSet* metahandles_to_purge, | |
| 67 Directory::KernelLoadInfo* kernel_load_info) { | |
| 68 DCHECK(CalledOnValidThread()); | |
| 69 DirOpenResult result = TryLoad(handles_map, delete_journals, | |
| 70 metahandles_to_purge, kernel_load_info); | |
| 71 if (result == OPENED) { | |
| 72 UMA_HISTOGRAM_ENUMERATION("Sync.DirectoryOpenResult", FIRST_TRY_SUCCESS, | |
| 73 RESULT_COUNT); | |
| 74 return OPENED; | |
| 75 } | |
| 76 | |
| 77 ReportFirstTryOpenFailure(); | |
| 78 | |
| 79 // The fallback: delete the current database and return a fresh one. We can | |
| 80 // fetch the user's data from the cloud. | |
| 81 STLDeleteValues(handles_map); | |
| 82 STLDeleteElements(delete_journals); | |
| 83 | |
| 84 ResetAndCreateConnection(); | |
| 85 | |
| 86 base::DeleteFile(backing_file_path_, false); | |
| 87 | |
| 88 result = TryLoad(handles_map, delete_journals, metahandles_to_purge, | |
| 89 kernel_load_info); | |
| 90 if (result == OPENED) { | |
| 91 UMA_HISTOGRAM_ENUMERATION("Sync.DirectoryOpenResult", SECOND_TRY_SUCCESS, | |
| 92 RESULT_COUNT); | |
| 93 } else { | |
| 94 UMA_HISTOGRAM_ENUMERATION("Sync.DirectoryOpenResult", SECOND_TRY_FAILURE, | |
| 95 RESULT_COUNT); | |
| 96 } | |
| 97 | |
| 98 return result; | |
| 99 } | |
| 100 | |
| 101 void OnDiskDirectoryBackingStore::ReportFirstTryOpenFailure() { | |
| 102 // In debug builds, the last thing we want is to silently clear the database. | |
| 103 // It's full of evidence that might help us determine what went wrong. It | |
| 104 // might be sqlite's fault, but it could also be a bug in sync. We crash | |
| 105 // immediately so a developer can investigate. | |
| 106 // | |
| 107 // Developers: If you're not interested in debugging this right now, just move | |
| 108 // aside the 'Sync Data' directory in your profile. This is similar to what | |
| 109 // the code would do if this DCHECK were disabled. | |
| 110 NOTREACHED() << "Crashing to preserve corrupt sync database"; | |
| 111 } | |
| 112 | |
| 113 const base::FilePath& OnDiskDirectoryBackingStore::backing_file_path() const { | |
| 114 DCHECK(CalledOnValidThread()); | |
| 115 return backing_file_path_; | |
| 116 } | |
| 117 | |
| 118 } // namespace syncable | |
| 119 } // 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