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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 "chrome/browser/net/http_server_properties_manager.h"
#include "base/bind.h"
#include "base/stl_util.h"
#include "base/values.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/pref_names.h"
#include "content/browser/browser_thread.h"
#include "content/common/notification_details.h"
#include "content/common/notification_source.h"
namespace chrome_browser_net {
namespace {
// Time to wait before starting an update the spdy_servers_table_ cache from
// preferences. Scheduling another update during this period will reset the
// timer.
const int64 kUpdateCacheDelayMs = 1000;
// Time to wait before starting an update the preferences from the
// spdy_servers cache. Scheduling another update during this period will
// reset the timer.
const int64 kUpdatePrefsDelayMs = 5000;
typedef std::vector<std::string> StringVector;
// String is host/port pair of spdy server.
StringVector* ListValueToStringVector(const base::ListValue* list) {
StringVector* vector = new StringVector;
if (!list)
return vector;
vector->reserve(list->GetSize());
std::string s;
for (base::ListValue::const_iterator it = list->begin();
it != list->end(); ++it) {
if ((*it)->GetAsString(&s))
vector->push_back(s);
}
return vector;
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// HttpServerPropertiesManager
HttpServerPropertiesManager::HttpServerPropertiesManager(
PrefService* pref_service)
: ALLOW_THIS_IN_INITIALIZER_LIST(ui_method_factory_(this)),
pref_service_(pref_service) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(pref_service);
ui_weak_ptr_factory_.reset(
new base::WeakPtrFactory<HttpServerPropertiesManager>(this));
ui_weak_ptr_ = ui_weak_ptr_factory_->GetWeakPtr();
pref_change_registrar_.Init(pref_service_);
pref_change_registrar_.Add(prefs::kSpdyServers, this);
}
HttpServerPropertiesManager::~HttpServerPropertiesManager() {
}
void HttpServerPropertiesManager::InitializeOnIOThread() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
http_server_properties_impl_.reset(new net::HttpServerPropertiesImpl());
io_method_factory_.reset(
new ScopedRunnableMethodFactory<HttpServerPropertiesManager>(this));
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&HttpServerPropertiesManager::UpdateCacheFromPrefs,
ui_weak_ptr_));
}
void HttpServerPropertiesManager::ShutdownOnUIThread() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Cancel any pending updates, and stop listening for pref change updates.
ui_method_factory_.RevokeAll();
ui_weak_ptr_factory_.reset();
pref_change_registrar_.RemoveAll();
}
bool HttpServerPropertiesManager::SupportsSpdy(
const net::HostPortPair& server) const {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
return http_server_properties_impl_->SupportsSpdy(server);
}
void HttpServerPropertiesManager::SetSupportsSpdy(
const net::HostPortPair& server,
bool support_spdy) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
http_server_properties_impl_->SetSupportsSpdy(server, support_spdy);
ScheduleUpdatePrefsOnIO();
}
void HttpServerPropertiesManager::DeleteAll() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
http_server_properties_impl_->DeleteAll();
ScheduleUpdatePrefsOnIO();
}
// static
void HttpServerPropertiesManager::RegisterPrefs(PrefService* prefs) {
prefs->RegisterListPref(prefs::kSpdyServers, PrefService::UNSYNCABLE_PREF);
}
//
// Update spdy_servers (the cached data) with data from preferences.
//
void HttpServerPropertiesManager::ScheduleUpdateCacheOnUI() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// Cancel pending updates, if any.
ui_method_factory_.RevokeAll();
PostUpdateTaskOnUI(
ui_method_factory_.NewRunnableMethod(
&HttpServerPropertiesManager::UpdateCacheFromPrefs));
}
void HttpServerPropertiesManager::PostUpdateTaskOnUI(Task* task) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
// This is overridden in tests to post the task without the delay.
MessageLoop::current()->PostDelayedTask(FROM_HERE, task, kUpdateCacheDelayMs);
}
void HttpServerPropertiesManager::UpdateCacheFromPrefs() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (!pref_service_->HasPrefPath(prefs::kSpdyServers))
return;
// The preferences can only be read on the UI thread.
StringVector* spdy_servers =
ListValueToStringVector(pref_service_->GetList(prefs::kSpdyServers));
// Go through the IO thread to grab a WeakPtr to |this|. This is safe from
// here, since this task will always execute before a potential deletion of
// ProfileIOData on IO.
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&HttpServerPropertiesManager::UpdateCacheFromPrefsOnIO,
base::Unretained(this), spdy_servers, true));
}
void HttpServerPropertiesManager::UpdateCacheFromPrefsOnIO(
StringVector* spdy_servers,
bool support_spdy) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
// Preferences have the master data because admins might have pushed new
// preferences. Clear the cached data and use the new spdy server list from
// preferences.
scoped_ptr<StringVector> scoped_spdy_servers(spdy_servers);
http_server_properties_impl_->Initialize(spdy_servers, support_spdy);
}
//
// Update Preferences with data from spdy_servers (the cached data).
//
void HttpServerPropertiesManager::ScheduleUpdatePrefsOnIO() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
// Cancel pending updates, if any.
io_method_factory_->RevokeAll();
PostUpdateTaskOnIO(
io_method_factory_->NewRunnableMethod(
&HttpServerPropertiesManager::UpdatePrefsFromCache));
}
void HttpServerPropertiesManager::PostUpdateTaskOnIO(Task* task) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
// This is overridden in tests to post the task without the delay.
MessageLoop::current()->PostDelayedTask(FROM_HERE, task, kUpdatePrefsDelayMs);
}
void HttpServerPropertiesManager::UpdatePrefsFromCache() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
scoped_refptr<RefCountedListValue> spdy_server_list =
new RefCountedListValue();
http_server_properties_impl_->GetSpdyServerList(&spdy_server_list->data);
// Update the preferences on the UI thread.
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&HttpServerPropertiesManager::SetSpdyServersInPrefsOnUI,
ui_weak_ptr_, spdy_server_list));
}
void HttpServerPropertiesManager::SetSpdyServersInPrefsOnUI(
scoped_refptr<RefCountedListValue> spdy_server_list) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
pref_service_->Set(prefs::kSpdyServers, spdy_server_list->data);
}
void HttpServerPropertiesManager::Observe(int type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(type == chrome::NOTIFICATION_PREF_CHANGED);
PrefService* prefs = Source<PrefService>(source).ptr();
DCHECK(prefs == pref_service_);
std::string* pref_name = Details<std::string>(details).ptr();
DCHECK(*pref_name == prefs::kSpdyServers);
ScheduleUpdateCacheOnUI();
}
} // namespace chrome_browser_net
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