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// Copyright (c) 2010 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 "webkit/tools/test_shell/simple_database_system.h"
#include "base/auto_reset.h"
#include "base/file_util.h"
#include "base/message_loop.h"
#include "base/threading/platform_thread.h"
#include "base/utf_string_conversions.h"
#include "third_party/sqlite/sqlite3.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDatabase.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
#include "webkit/database/database_util.h"
#include "webkit/database/vfs_backend.h"
using webkit_database::DatabaseTracker;
using webkit_database::DatabaseUtil;
using webkit_database::VfsBackend;
SimpleDatabaseSystem* SimpleDatabaseSystem::instance_ = NULL;
SimpleDatabaseSystem* SimpleDatabaseSystem::GetInstance() {
DCHECK(instance_);
return instance_;
}
SimpleDatabaseSystem::SimpleDatabaseSystem()
: waiting_for_dbs_to_close_(false) {
CHECK(temp_dir_.CreateUniqueTempDir());
db_tracker_ = new DatabaseTracker(temp_dir_.path(), false);
db_tracker_->AddObserver(this);
DCHECK(!instance_);
instance_ = this;
}
SimpleDatabaseSystem::~SimpleDatabaseSystem() {
db_tracker_->RemoveObserver(this);
instance_ = NULL;
}
base::PlatformFile SimpleDatabaseSystem::OpenFile(
const string16& vfs_file_name, int desired_flags) {
base::PlatformFile file_handle = base::kInvalidPlatformFileValue;
FilePath file_name = GetFullFilePathForVfsFile(vfs_file_name);
if (file_name.empty()) {
VfsBackend::OpenTempFileInDirectory(
db_tracker_->DatabaseDirectory(), desired_flags, &file_handle);
} else {
VfsBackend::OpenFile(file_name, desired_flags, &file_handle);
}
return file_handle;
}
int SimpleDatabaseSystem::DeleteFile(
const string16& vfs_file_name, bool sync_dir) {
// We try to delete the file multiple times, because that's what the default
// VFS does (apparently deleting a file can sometimes fail on Windows).
// We sleep for 10ms between retries for the same reason.
const int kNumDeleteRetries = 3;
int num_retries = 0;
int error_code = SQLITE_OK;
FilePath file_name = GetFullFilePathForVfsFile(vfs_file_name);
do {
error_code = VfsBackend::DeleteFile(file_name, sync_dir);
} while ((++num_retries < kNumDeleteRetries) &&
(error_code == SQLITE_IOERR_DELETE) &&
(base::PlatformThread::Sleep(10), 1));
return error_code;
}
long SimpleDatabaseSystem::GetFileAttributes(const string16& vfs_file_name) {
return VfsBackend::GetFileAttributes(
GetFullFilePathForVfsFile(vfs_file_name));
}
long long SimpleDatabaseSystem::GetFileSize(const string16& vfs_file_name) {
return VfsBackend::GetFileSize(GetFullFilePathForVfsFile(vfs_file_name));
}
void SimpleDatabaseSystem::DatabaseOpened(const string16& origin_identifier,
const string16& database_name,
const string16& description,
int64 estimated_size) {
int64 database_size = 0;
int64 space_available = 0;
database_connections_.AddConnection(origin_identifier, database_name);
db_tracker_->DatabaseOpened(origin_identifier, database_name, description,
estimated_size, &database_size, &space_available);
SetFullFilePathsForVfsFile(origin_identifier, database_name);
OnDatabaseSizeChanged(origin_identifier, database_name,
database_size, space_available);
}
void SimpleDatabaseSystem::DatabaseModified(const string16& origin_identifier,
const string16& database_name) {
DCHECK(database_connections_.IsDatabaseOpened(
origin_identifier, database_name));
db_tracker_->DatabaseModified(origin_identifier, database_name);
}
void SimpleDatabaseSystem::DatabaseClosed(const string16& origin_identifier,
const string16& database_name) {
DCHECK(database_connections_.IsDatabaseOpened(
origin_identifier, database_name));
db_tracker_->DatabaseClosed(origin_identifier, database_name);
database_connections_.RemoveConnection(origin_identifier, database_name);
if (waiting_for_dbs_to_close_ && database_connections_.IsEmpty())
MessageLoop::current()->PostTask(FROM_HERE, new MessageLoop::QuitTask());
}
void SimpleDatabaseSystem::OnDatabaseSizeChanged(
const string16& origin_identifier,
const string16& database_name,
int64 database_size,
int64 space_available) {
if (database_connections_.IsOriginUsed(origin_identifier)) {
WebKit::WebDatabase::updateDatabaseSize(
origin_identifier, database_name, database_size, space_available);
}
}
void SimpleDatabaseSystem::OnDatabaseScheduledForDeletion(
const string16& origin_identifier,
const string16& database_name) {
WebKit::WebDatabase::closeDatabaseImmediately(
origin_identifier, database_name);
}
void SimpleDatabaseSystem::databaseOpened(const WebKit::WebDatabase& database) {
DatabaseOpened(database.securityOrigin().databaseIdentifier(),
database.name(), database.displayName(),
database.estimatedSize());
}
void SimpleDatabaseSystem::databaseModified(
const WebKit::WebDatabase& database) {
DatabaseModified(database.securityOrigin().databaseIdentifier(),
database.name());
}
void SimpleDatabaseSystem::databaseClosed(const WebKit::WebDatabase& database) {
DatabaseClosed(database.securityOrigin().databaseIdentifier(),
database.name());
}
void SimpleDatabaseSystem::ClearAllDatabases() {
// Wait for all databases to be closed.
if (!database_connections_.IsEmpty()) {
AutoReset<bool> waiting_for_dbs_auto_reset(
&waiting_for_dbs_to_close_, true);
MessageLoop::ScopedNestableTaskAllower nestable(MessageLoop::current());
MessageLoop::current()->Run();
}
db_tracker_->CloseTrackerDatabaseAndClearCaches();
file_util::Delete(db_tracker_->DatabaseDirectory(), true);
file_names_.clear();
}
void SimpleDatabaseSystem::SetDatabaseQuota(int64 quota) {
db_tracker_->SetDefaultQuota(quota);
}
void SimpleDatabaseSystem::SetFullFilePathsForVfsFile(
const string16& origin_identifier,
const string16& database_name) {
string16 vfs_file_name = origin_identifier + ASCIIToUTF16("/") +
database_name + ASCIIToUTF16("#");
FilePath file_name =
DatabaseUtil::GetFullFilePathForVfsFile(db_tracker_, vfs_file_name);
AutoLock file_names_auto_lock(file_names_lock_);
file_names_[vfs_file_name] = file_name;
file_names_[vfs_file_name + ASCIIToUTF16("-journal")] =
FilePath::FromWStringHack(file_name.ToWStringHack() +
ASCIIToWide("-journal"));
}
FilePath SimpleDatabaseSystem::GetFullFilePathForVfsFile(
const string16& vfs_file_name) {
if (vfs_file_name.empty()) // temp file, used for vacuuming
return FilePath();
AutoLock file_names_auto_lock(file_names_lock_);
DCHECK(file_names_.find(vfs_file_name) != file_names_.end());
return file_names_[vfs_file_name];
}
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