Introduce net::HttpServerPropertiesManager to manage server-specific properties.

chrome/browser/net/spdy_config_service_manager.h

+// 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.
+
+#ifndef CHROME_BROWSER_NET_SPDY_CONFIG_SERVICE_MANAGER_H_
+#define CHROME_BROWSER_NET_SPDY_CONFIG_SERVICE_MANAGER_H_
+#pragma once
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/prefs/pref_change_registrar.h"
+#include "chrome/browser/prefs/pref_member.h"
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/pref_names.h"
+#include "content/common/notification_details.h"
+#include "content/common/notification_source.h"
+#include "net/spdy/spdy_config_service.h"
+
+class PrefService;
+class SpdyConfigServiceManager;
+
+////////////////////////////////////////////////////////////////////////////////
+//  SpdyConfigServicePref
+
+// An SpdyConfigService which stores a cached version of the current SpdyConfig
+// prefs. Wheneve SpdyConfig changes, it persists the data into user
+// preferences.
+class SpdyConfigServicePref : public net::SpdyConfigService {
+ public:
+  SpdyConfigServicePref();
+  virtual ~SpdyConfigServicePref();
+
+  // Store SPDY config settings in |config|. Must only be called from IO thread.
+  virtual void GetSpdyConfig(net::SpdyConfig* config);
+
+  // Add |spdy_server| as the server which supports SPDY protocol into the
+  // persisitent store. Should only be called from IO thread.
+  virtual void AddSpdyServer(const std::string& spdy_server);
+
+ private:
+  // Allow the pref watcher to update our internal state.
+  friend class SpdyConfigServiceManager;
+
+  // Cached value of prefs, should only be accessed from IO thread.
+  net::SpdyConfig cached_config_;
+
+  scoped_refptr<SpdyConfigServiceManager> spdy_config_service_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(SpdyConfigServicePref);
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//  SpdyConfigServiceManager
+
+// The manager for creating and updating an SpdyConfigService objects.
+class SpdyConfigServiceManager
+    : public NotificationObserver,
+      public base::RefCountedThreadSafe<SpdyConfigServiceManager> {
+ public:
+  // Create an instance of the SpdyConfigServiceManager. The lifetime of the
+  // PrefService objects must be longer than that of the manager.
+  explicit SpdyConfigServiceManager();
+  virtual ~SpdyConfigServiceManager();
+
+  // Get an SpdyConfigService instance.  It may be a new instance or the manager
+  // may return the same instance multiple times.
+  // The caller should hold a reference as long as it needs the instance (eg,
+  // using scoped_refptr.)
+  virtual net::SpdyConfigService* Get();
+
+  // Register |prefs| Spdy preferences.
+  static void RegisterPrefs(PrefService* prefs);
+
+  // Get SPDY preferences from |prefs| object.
+  void Initialize(PrefService* prefs);
+
+  // Prepare for shutdown.
+  void Cleanup();
+
+  // Store Spdy config settings in user preferences with the data from
+  // |spdy_config_service_|'s |caced_config_|. Must only be called from UI
+  // thread.
+  void SetSpdyConfigInPrefs();
+
+ protected:
+  friend class base::RefCountedThreadSafe<SpdyConfigServiceManager>;
+
+ private:
+  // Callback for preference changes. We ignore tha changes in preferences.
+  virtual void Observe(int type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+  PrefChangeRegistrar pref_change_registrar_;
+
+  // |spdy_servers_| is flattened representation of servers (host/port pair)
+  // that support SPDY protocol. The prefs should only be accessed from UI
+  // thread.
+  StringPrefMember spdy_servers_;
+
+  scoped_refptr<SpdyConfigServicePref> spdy_config_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(SpdyConfigServiceManager);
+};
+
+#endif  // CHROME_BROWSER_NET_SPDY_CONFIG_SERVICE_MANAGER_H_