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      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 
     13 namespace net {
     14 class URLRequest;
     15 }  // namespace net
     16 
     17 namespace content {
     18 struct 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.
     27 class 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