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// Copyright (c) 2011 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/history/core/browser/top_sites_backend.h"
#include <stddef.h>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/files/file_path.h"
#include "base/location.h"
#include "base/memory/ref_counted.h"
#include "base/metrics/histogram_macros.h"
#include "base/single_thread_task_runner.h"
#include "base/task/cancelable_task_tracker.h"
#include "base/task/post_task.h"
#include "base/task/task_traits.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
#include "components/history/core/browser/top_sites_database.h"
#include "sql/database.h"
namespace history {
TopSitesBackend::TopSitesBackend()
: db_(new TopSitesDatabase()),
db_task_runner_(base::CreateSequencedTaskRunnerWithTraits(
{base::TaskPriority::USER_VISIBLE,
base::TaskShutdownBehavior::BLOCK_SHUTDOWN, base::MayBlock()})) {
DCHECK(db_task_runner_);
}
void TopSitesBackend::Init(const base::FilePath& path) {
db_path_ = path;
db_task_runner_->PostTask(
FROM_HERE,
base::BindOnce(&TopSitesBackend::InitDBOnDBThread, this, path));
}
void TopSitesBackend::Shutdown() {
db_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&TopSitesBackend::ShutdownDBOnDBThread, this));
}
void TopSitesBackend::GetMostVisitedSites(
GetMostVisitedSitesCallback callback,
base::CancelableTaskTracker* tracker) {
scoped_refptr<MostVisitedThreadSafe> sites = new MostVisitedThreadSafe();
tracker->PostTaskAndReply(
db_task_runner_.get(), FROM_HERE,
base::BindOnce(&TopSitesBackend::GetMostVisitedSitesOnDBThread, this,
sites),
base::BindOnce(std::move(callback), sites));
}
void TopSitesBackend::UpdateTopSites(const TopSitesDelta& delta,
const RecordHistogram record_or_not) {
db_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&TopSitesBackend::UpdateTopSitesOnDBThread,
this, delta, record_or_not));
}
void TopSitesBackend::ResetDatabase() {
db_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&TopSitesBackend::ResetDatabaseOnDBThread, this,
db_path_));
}
TopSitesBackend::~TopSitesBackend() {
DCHECK(!db_); // Shutdown should have happened first (which results in
// nulling out db).
}
void TopSitesBackend::InitDBOnDBThread(const base::FilePath& path) {
DCHECK(db_task_runner_->RunsTasksInCurrentSequence());
if (!db_->Init(path)) {
LOG(ERROR) << "Failed to initialize database.";
db_.reset();
}
}
void TopSitesBackend::ShutdownDBOnDBThread() {
DCHECK(db_task_runner_->RunsTasksInCurrentSequence());
db_.reset();
}
void TopSitesBackend::GetMostVisitedSitesOnDBThread(
scoped_refptr<MostVisitedThreadSafe> sites) {
DCHECK(db_task_runner_->RunsTasksInCurrentSequence());
if (db_) {
db_->GetSites(&(sites->data));
}
}
void TopSitesBackend::UpdateTopSitesOnDBThread(
const TopSitesDelta& delta, const RecordHistogram record_or_not) {
TRACE_EVENT0("startup", "history::TopSitesBackend::UpdateTopSitesOnDBThread");
if (!db_)
return;
base::TimeTicks begin_time = base::TimeTicks::Now();
db_->ApplyDelta(delta);
if (record_or_not == RECORD_HISTOGRAM_YES) {
UMA_HISTOGRAM_TIMES("History.FirstUpdateTime",
base::TimeTicks::Now() - begin_time);
}
}
void TopSitesBackend::ResetDatabaseOnDBThread(const base::FilePath& file_path) {
DCHECK(db_task_runner_->RunsTasksInCurrentSequence());
db_.reset(nullptr);
sql::Database::Delete(db_path_);
db_.reset(new TopSitesDatabase());
InitDBOnDBThread(db_path_);
}
} // namespace history
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