1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CONTENT_BROWSER_LOADER_RESOURCE_MESSAGE_FILTER_H_
6 #define CONTENT_BROWSER_LOADER_RESOURCE_MESSAGE_FILTER_H_
8 #include "base/callback_forward.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "base/memory/weak_ptr.h"
11 #include "content/common/content_export.h"
12 #include "content/public/browser/browser_message_filter.h"
13 #include "content/public/common/resource_type.h"
15 struct ResourceHostMsg_Request;
18 class FileSystemContext;
19 } // namespace fileapi
22 class URLRequestContext;
27 class ChromeAppCacheService;
28 class ChromeBlobStorageContext;
29 class ResourceContext;
30 class ServiceWorkerContextWrapper;
32 // This class filters out incoming IPC messages for network requests and
33 // processes them on the IPC thread. As a result, network requests are not
34 // delayed by costly UI processing that may be occuring on the main thread of
35 // the browser. It also means that any hangs in starting a network request
36 // will not interfere with browser UI.
37 class CONTENT_EXPORT ResourceMessageFilter : public BrowserMessageFilter {
39 typedef base::Callback<void(const ResourceHostMsg_Request&,
41 net::URLRequestContext**)> GetContextsCallback;
43 // |appcache_service|, |blob_storage_context|, |file_system_context| may be
44 // NULL in unittests or for requests from the (NPAPI) plugin process.
45 ResourceMessageFilter(
48 ChromeAppCacheService* appcache_service,
49 ChromeBlobStorageContext* blob_storage_context,
50 fileapi::FileSystemContext* file_system_context,
51 ServiceWorkerContextWrapper* service_worker_context,
52 const GetContextsCallback& get_contexts_callback);
54 // BrowserMessageFilter implementation.
55 virtual void OnChannelClosing() OVERRIDE;
56 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
58 void GetContexts(const ResourceHostMsg_Request& request,
59 ResourceContext** resource_context,
60 net::URLRequestContext** request_context);
62 // Returns the net::URLRequestContext for the given request.
63 net::URLRequestContext* GetURLRequestContext(ResourceType request_type);
65 ChromeAppCacheService* appcache_service() const {
66 return appcache_service_.get();
69 ChromeBlobStorageContext* blob_storage_context() const {
70 return blob_storage_context_.get();
73 fileapi::FileSystemContext* file_system_context() const {
74 return file_system_context_.get();
77 ServiceWorkerContextWrapper* service_worker_context() const {
78 return service_worker_context_.get();
81 int child_id() const { return child_id_; }
82 int process_type() const { return process_type_; }
84 base::WeakPtr<ResourceMessageFilter> GetWeakPtr();
87 // Protected destructor so that we can be overriden in tests.
88 virtual ~ResourceMessageFilter();
91 // The ID of the child process.
96 scoped_refptr<ChromeAppCacheService> appcache_service_;
97 scoped_refptr<ChromeBlobStorageContext> blob_storage_context_;
98 scoped_refptr<fileapi::FileSystemContext> file_system_context_;
99 scoped_refptr<ServiceWorkerContextWrapper> service_worker_context_;
101 GetContextsCallback get_contexts_callback_;
103 // This must come last to make sure weak pointers are invalidated first.
104 base::WeakPtrFactory<ResourceMessageFilter> weak_ptr_factory_;
106 DISALLOW_IMPLICIT_CONSTRUCTORS(ResourceMessageFilter);
109 } // namespace content
111 #endif // CONTENT_BROWSER_LOADER_RESOURCE_MESSAGE_FILTER_H_