Index: components/webdata/common/web_data_service_backend.cc |
diff --git a/components/webdata/common/web_data_service_backend.cc b/components/webdata/common/web_data_service_backend.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3b945b0b540f721304917c9d135b52a16689f890 |
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+++ b/components/webdata/common/web_data_service_backend.cc |
@@ -0,0 +1,106 @@ |
+// 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. |
+ |
+#include "components/webdata/common/web_data_service_backend.h" |
+ |
+#include "base/bind.h" |
+#include "base/location.h" |
+#include "components/webdata/common/web_data_request_manager.h" |
+#include "components/webdata/common/web_database.h" |
+#include "components/webdata/common/web_database_table.h" |
+ |
+ |
+using base::Bind; |
+using base::FilePath; |
+using content::BrowserThread; |
+ |
+WebDataServiceBackend::WebDataServiceBackend( |
+ const FilePath& path, Delegate* delegate) |
+ : db_path_(path), |
+ request_manager_(new WebDataRequestManager()), |
+ init_status_(sql::INIT_FAILURE), |
+ init_complete_(false), |
+ delegate_(delegate) { |
+} |
+ |
+void WebDataServiceBackend::AddTable(scoped_ptr<WebDatabaseTable> table) { |
+ DCHECK(!db_.get()); |
+ tables_.push_back(table.release()); |
+} |
+ |
+void WebDataServiceBackend::InitDatabase() { |
+ LoadDatabaseIfNecessary(); |
+ if (delegate_) { |
+ delegate_->DBLoaded(init_status_); |
+ } |
+} |
+ |
+sql::InitStatus WebDataServiceBackend::LoadDatabaseIfNecessary() { |
+ if (init_complete_ || db_path_.empty()) { |
+ return init_status_; |
+ } |
+ init_complete_ = true; |
+ db_.reset(new WebDatabase()); |
+ |
+ for (ScopedVector<WebDatabaseTable>::iterator it = tables_.begin(); |
+ it != tables_.end(); |
+ ++it) { |
+ db_->AddTable(*it); |
+ } |
+ |
+ init_status_ = db_->Init(db_path_); |
+ if (init_status_ != sql::INIT_OK) { |
+ LOG(ERROR) << "Cannot initialize the web database: " << init_status_; |
+ db_.reset(NULL); |
+ return init_status_; |
+ } |
+ |
+ db_->BeginTransaction(); |
+ return init_status_; |
+} |
+ |
+void WebDataServiceBackend::ShutdownDatabase(bool should_reinit) { |
+ if (db_ && init_status_ == sql::INIT_OK) |
+ db_->CommitTransaction(); |
+ db_.reset(NULL); |
+ init_complete_ = !should_reinit; // Setting init_complete_ to true will ensure |
+ // that the init sequence is not re-run. |
+ |
+ init_status_ = sql::INIT_FAILURE; |
+} |
+ |
+void WebDataServiceBackend::DBWriteTaskWrapper( |
+ const WebDatabaseService::WriteTask& task, |
+ scoped_ptr<WebDataRequest> request) { |
+ LoadDatabaseIfNecessary(); |
+ if (db_ && init_status_ == sql::INIT_OK && !request->IsCancelled()) { |
+ WebDatabase::State state = task.Run(db_.get()); |
+ if (state == WebDatabase::COMMIT_NEEDED) |
+ Commit(); |
+ } |
+ request_manager_->RequestCompleted(request.Pass()); |
+} |
+ |
+void WebDataServiceBackend::DBReadTaskWrapper( |
+ const WebDatabaseService::ReadTask& task, |
+ scoped_ptr<WebDataRequest> request) { |
+ LoadDatabaseIfNecessary(); |
+ if (db_ && init_status_ == sql::INIT_OK && !request->IsCancelled()) { |
+ request->SetResult(task.Run(db_.get()).Pass()); |
+ } |
+ request_manager_->RequestCompleted(request.Pass()); |
+} |
+ |
+WebDataServiceBackend::~WebDataServiceBackend() { |
+ ShutdownDatabase(false); |
+} |
+ |
+void WebDataServiceBackend::Commit() { |
+ if (db_ && init_status_ == sql::INIT_OK) { |
+ db_->CommitTransaction(); |
+ db_->BeginTransaction(); |
+ } else { |
+ NOTREACHED() << "Commit scheduled after Shutdown()"; |
+ } |
+} |