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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/cronet/host_cache_persistence_manager.h"
#include <memory>
#include "base/functional/bind.h"
#include "base/values.h"
#include "components/prefs/pref_service.h"
#include "net/log/net_log.h"
namespace cronet {
HostCachePersistenceManager::HostCachePersistenceManager(
net::HostCache* cache,
PrefService* pref_service,
std::string pref_name,
base::TimeDelta delay,
net::NetLog* net_log)
: cache_(cache),
pref_service_(pref_service),
pref_name_(pref_name),
writing_pref_(false),
delay_(delay),
net_log_(net::NetLogWithSource::Make(
net_log,
net::NetLogSourceType::HOST_CACHE_PERSISTENCE_MANAGER)) {
DCHECK(cache_);
DCHECK(pref_service_);
// Get the initial value of the pref if it's already initialized.
if (pref_service_->HasPrefPath(pref_name_))
ReadFromDisk();
registrar_.Init(pref_service_);
registrar_.Add(pref_name_,
base::BindRepeating(&HostCachePersistenceManager::ReadFromDisk,
weak_factory_.GetWeakPtr()));
cache_->set_persistence_delegate(this);
}
HostCachePersistenceManager::~HostCachePersistenceManager() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
timer_.Stop();
registrar_.RemoveAll();
cache_->set_persistence_delegate(nullptr);
}
void HostCachePersistenceManager::ReadFromDisk() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (writing_pref_)
return;
net_log_.BeginEvent(net::NetLogEventType::HOST_CACHE_PREF_READ);
const base::Value::List& pref_value = pref_service_->GetList(pref_name_);
bool success = cache_->RestoreFromListValue(pref_value);
net_log_.AddEntryWithBoolParams(net::NetLogEventType::HOST_CACHE_PREF_READ,
net::NetLogEventPhase::END, "success",
success);
}
void HostCachePersistenceManager::ScheduleWrite() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (timer_.IsRunning())
return;
net_log_.AddEvent(net::NetLogEventType::HOST_CACHE_PERSISTENCE_START_TIMER);
timer_.Start(FROM_HERE, delay_,
base::BindOnce(&HostCachePersistenceManager::WriteToDisk,
weak_factory_.GetWeakPtr()));
}
void HostCachePersistenceManager::WriteToDisk() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
net_log_.AddEvent(net::NetLogEventType::HOST_CACHE_PREF_WRITE);
base::Value::List list;
cache_->GetList(list, false, net::HostCache::SerializationType::kRestorable);
writing_pref_ = true;
pref_service_->SetList(pref_name_, std::move(list));
writing_pref_ = false;
}
} // namespace cronet
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