Handling LevelDB errors encountered after open.

content/browser/indexed_db/indexed_db_backing_store.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BACKING_STORE_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BACKING_STORE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_piece.h"
 #include "base/timer/timer.h"
 #include "content/browser/indexed_db/indexed_db.h"
 #include "content/browser/indexed_db/indexed_db_metadata.h"
 #include "content/browser/indexed_db/leveldb/leveldb_iterator.h"
 #include "content/browser/indexed_db/leveldb/leveldb_transaction.h"
 #include "content/common/content_export.h"
 #include "content/common/indexed_db/indexed_db_key.h"
 #include "content/common/indexed_db/indexed_db_key_path.h"
 #include "content/common/indexed_db/indexed_db_key_range.h"
 #include "third_party/leveldatabase/src/include/leveldb/status.h"
 #include "url/gurl.h"
 
 namespace content {
 
+class IndexedDBDatabaseError;
 class LevelDBComparator;
 class LevelDBDatabase;
 struct IndexedDBValue;
 
 class LevelDBFactory {
  public:
   virtual ~LevelDBFactory() {}
   virtual leveldb::Status OpenLevelDB(const base::FilePath& file_name,
                                       const LevelDBComparator* comparator,
                                       scoped_ptr<LevelDBDatabase>* db,
@@ skipping 31 matching lines @@
       blink::WebIDBDataLoss* data_loss,
       std::string* data_loss_message,
       bool* disk_full,
       LevelDBFactory* factory);
   static scoped_refptr<IndexedDBBackingStore> OpenInMemory(
       const GURL& origin_url);
   static scoped_refptr<IndexedDBBackingStore> OpenInMemory(
       const GURL& origin_url,
       LevelDBFactory* factory);
 
+  virtual void Compact();
   virtual std::vector<base::string16> GetDatabaseNames();
   virtual leveldb::Status GetIDBDatabaseMetaData(
       const base::string16& name,
       IndexedDBDatabaseMetadata* metadata,
       bool* success) WARN_UNUSED_RESULT;
   virtual leveldb::Status CreateIDBDatabaseMetaData(
       const base::string16& name,
       const base::string16& version,
       int64 int_version,
       int64* row_id);
   virtual bool UpdateIDBDatabaseIntVersion(
       IndexedDBBackingStore::Transaction* transaction,
       int64 row_id,
       int64 int_version);
   virtual leveldb::Status DeleteDatabase(const base::string16& name);
 
+  // Assumes caller has already closed the backing store.
+  static leveldb::Status DestroyBackingStore(const base::FilePath& path_base,
+                                             const GURL& origin_url);
+  static bool RecordCorruptionInfo(const base::FilePath& path_base,
+                                   const GURL& origin_url,
+                                   const std::string& message);
   leveldb::Status GetObjectStores(
       int64 database_id,
       IndexedDBDatabaseMetadata::ObjectStoreMap* map) WARN_UNUSED_RESULT;
   virtual leveldb::Status CreateObjectStore(
       IndexedDBBackingStore::Transaction* transaction,
       int64 database_id,
       int64 object_store_id,
       const base::string16& name,
       const IndexedDBKeyPath& key_path,
       bool auto_increment);
@@ skipping 211 matching lines @@
                         scoped_ptr<LevelDBDatabase> db,
                         scoped_ptr<LevelDBComparator> comparator);
   virtual ~IndexedDBBackingStore();
   friend class base::RefCounted<IndexedDBBackingStore>;
 
  private:
   static scoped_refptr<IndexedDBBackingStore> Create(
       const GURL& origin_url,
       scoped_ptr<LevelDBDatabase> db,
       scoped_ptr<LevelDBComparator> comparator);
+  static bool ReadCorruptionInfo(const base::FilePath& path_base,
+                                 const GURL& origin_url,
+                                 std::string& message);
 
   leveldb::Status FindKeyInIndex(
       IndexedDBBackingStore::Transaction* transaction,
       int64 database_id,
       int64 object_store_id,
       int64 index_id,
       const IndexedDBKey& key,
       std::string* found_encoded_primary_key,
       bool* found);
   leveldb::Status GetIndexes(int64 database_id,
@@ skipping 12 matching lines @@
   const std::string origin_identifier_;
 
   scoped_ptr<LevelDBDatabase> db_;
   scoped_ptr<LevelDBComparator> comparator_;
   base::OneShotTimer<IndexedDBBackingStore> close_timer_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_BACKING_STORE_H_