| // Copyright 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_CONNECTION_H_ |
| #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONNECTION_H_ |
| |
| #include <memory> |
| #include <set> |
| #include <unordered_map> |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/weak_ptr.h" |
| #include "content/browser/indexed_db/indexed_db_database.h" |
| #include "third_party/blink/public/mojom/indexeddb/indexeddb.mojom.h" |
| |
| namespace content { |
| class IndexedDBDatabaseCallbacks; |
| class IndexedDBDatabaseError; |
| class IndexedDBObserver; |
| class IndexedDBTransaction; |
| |
| class CONTENT_EXPORT IndexedDBConnection { |
| public: |
| IndexedDBConnection(int child_process_id, |
| scoped_refptr<IndexedDBDatabase> db, |
| scoped_refptr<IndexedDBDatabaseCallbacks> callbacks); |
| virtual ~IndexedDBConnection(); |
| |
| // These methods are virtual to allow subclassing in unit tests. |
| virtual void ForceClose(); |
| virtual void Close(); |
| virtual bool IsConnected(); |
| |
| void VersionChangeIgnored(); |
| |
| virtual void ActivatePendingObservers( |
| std::vector<std::unique_ptr<IndexedDBObserver>> pending_observers); |
| // Removes observer listed in |remove_observer_ids| from active_observer of |
| // connection or pending_observer of transactions associated with this |
| // connection. |
| virtual void RemoveObservers(const std::vector<int32_t>& remove_observer_ids); |
| |
| int32_t id() const { return id_; } |
| int child_process_id() const { return child_process_id_; } |
| |
| IndexedDBDatabase* database() const { return database_.get(); } |
| IndexedDBDatabaseCallbacks* callbacks() const { return callbacks_.get(); } |
| const std::vector<std::unique_ptr<IndexedDBObserver>>& active_observers() |
| const { |
| return active_observers_; |
| } |
| base::WeakPtr<IndexedDBConnection> GetWeakPtr() { |
| return weak_factory_.GetWeakPtr(); |
| } |
| |
| // Creates a transaction for this connection. |
| IndexedDBTransaction* CreateTransaction( |
| int64_t id, |
| const std::set<int64_t>& scope, |
| blink::mojom::IDBTransactionMode mode, |
| IndexedDBBackingStore::Transaction* backing_store_transaction); |
| |
| void AbortTransaction(IndexedDBTransaction* transaction, |
| const IndexedDBDatabaseError& error); |
| |
| void AbortAllTransactions(const IndexedDBDatabaseError& error); |
| |
| IndexedDBTransaction* GetTransaction(int64_t id) const; |
| |
| base::WeakPtr<IndexedDBTransaction> AddTransactionForTesting( |
| std::unique_ptr<IndexedDBTransaction> transaction); |
| |
| // We ignore calls where the id doesn't exist to facilitate the AbortAll call. |
| // TODO(dmurph): Change that so this doesn't need to ignore unknown ids. |
| void RemoveTransaction(int64_t id); |
| |
| // Returns a new transaction id for an observer transaction. |
| // Unique per connection. |
| int64_t NewObserverTransactionId(); |
| |
| private: |
| const int32_t id_; |
| |
| // The renderer-created transactions are in the right 32 bits of the |
| // transaction id, and the observer (browser-created) transactions are in the |
| // left 32 bits. |
| // This keeps track of the left 32 bits. Unsigned for defined overflow. |
| uint32_t next_observer_transaction_id_ = 1; |
| |
| // The process id of the child process this connection is associated with. |
| // Tracked for IndexedDBContextImpl::GetAllOriginsDetails and debugging. |
| const int child_process_id_; |
| |
| // NULL in some unit tests, and after the connection is closed. |
| scoped_refptr<IndexedDBDatabase> database_; |
| |
| // The connection owns transactions created on this connection. |
| std::unordered_map<int64_t, std::unique_ptr<IndexedDBTransaction>> |
| transactions_; |
| |
| // The callbacks_ member is cleared when the connection is closed. |
| // May be NULL in unit tests. |
| scoped_refptr<IndexedDBDatabaseCallbacks> callbacks_; |
| std::vector<std::unique_ptr<IndexedDBObserver>> active_observers_; |
| base::WeakPtrFactory<IndexedDBConnection> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(IndexedDBConnection); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONNECTION_H_ |