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.
4
5#ifndef CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_NETLOG_OBSERVER_H_
6#define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_NETLOG_OBSERVER_H_
7
8#include "base/containers/hash_tables.h"
9#include "base/memory/ref_counted.h"
10#include "content/public/common/resource_devtools_info.h"
11#include "net/base/net_log.h"
12
13namespace net {
14class URLRequest;
15}  // namespace net
16
17namespace content {
18struct ResourceResponse;
19
20// DevToolsNetLogObserver watches the NetLog event stream and collects the
21// stuff that may be of interest to DevTools. Currently, this only includes
22// actual HTTP/SPDY headers sent and received over the network.
23//
24// As DevToolsNetLogObserver shares live data with objects that live on the
25// IO Thread, it must also reside on the IO Thread.  Only OnAddEntry can be
26// called from other threads.
27class DevToolsNetLogObserver : public net::NetLog::ThreadSafeObserver {
28  typedef ResourceDevToolsInfo ResourceInfo;
29
30 public:
31  // net::NetLog::ThreadSafeObserver implementation:
32  virtual void OnAddEntry(const net::NetLog::Entry& entry) OVERRIDE;
33
34  void OnAddURLRequestEntry(const net::NetLog::Entry& entry);
35
36  static void Attach();
37  static void Detach();
38
39  // Must be called on the IO thread. May return NULL if no observers
40  // are active.
41  static DevToolsNetLogObserver* GetInstance();
42  static void PopulateResponseInfo(net::URLRequest*,
43                                   ResourceResponse*);
44
45 private:
46  static DevToolsNetLogObserver* instance_;
47
48  DevToolsNetLogObserver();
49  virtual ~DevToolsNetLogObserver();
50
51  ResourceInfo* GetResourceInfo(uint32 id);
52
53  typedef base::hash_map<uint32, scoped_refptr<ResourceInfo> > RequestToInfoMap;
54  RequestToInfoMap request_to_info_;
55
56  DISALLOW_COPY_AND_ASSIGN(DevToolsNetLogObserver);
57};
58
59}  // namespace content
60
61#endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_NETLOG_OBSERVER_H_
62