Anti-DDoS enhancements: Log to net log, UMA stats, improved policy.

chrome/browser/browser_main.cc

 // 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/browser_main.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 34 matching lines @@
 #include "chrome/browser/first_run/first_run_browser_process.h"
 #include "chrome/browser/first_run/upgrade_util.h"
 #include "chrome/browser/jankometer.h"
 #include "chrome/browser/metrics/field_trial_synchronizer.h"
 #include "chrome/browser/metrics/histogram_synchronizer.h"
 #include "chrome/browser/metrics/metrics_log.h"
 #include "chrome/browser/metrics/metrics_service.h"
 #include "chrome/browser/metrics/thread_watcher.h"
 #include "chrome/browser/net/chrome_dns_cert_provenance_checker.h"
 #include "chrome/browser/net/chrome_dns_cert_provenance_checker_factory.h"
+#include "chrome/browser/net/chrome_net_log.h"
 #include "chrome/browser/net/predictor_api.h"
 #include "chrome/browser/net/sdch_dictionary_fetcher.h"
 #include "chrome/browser/net/websocket_experiment/websocket_experiment_runner.h"
 #include "chrome/browser/plugin_updater.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/pref_value_store.h"
 #include "chrome/browser/prerender/prerender_field_trial.h"
 #include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
 #include "chrome/browser/process_singleton.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 132 matching lines @@
 #endif
 
 #if defined(TOOLKIT_USES_GTK)
 #include "ui/gfx/gtk_util.h"
 #endif
 
 #if defined(TOUCH_UI) && defined(HAVE_XINPUT2)
 #include "views/touchui/touch_factory.h"
 #endif
 
+namespace net {
+class NetLog;
+}  // namespace net
+
 // BrowserMainParts ------------------------------------------------------------
 
 BrowserMainParts::BrowserMainParts(const MainFunctionParams& parameters)
     : parameters_(parameters),
       parsed_command_line_(parameters.command_line_) {
 }
 
 BrowserMainParts::~BrowserMainParts() {
 }
 
@@ skipping 498 matching lines @@
     net::SpdySessionPool::enable_ip_pooling(false);
 
   if (parsed_command_line.HasSwitch(switches::kMaxSpdySessionsPerDomain)) {
     int value;
     base::StringToInt(parsed_command_line.GetSwitchValueASCII(
             switches::kMaxSpdySessionsPerDomain),
         &value);
     net::SpdySessionPool::set_max_sessions_per_domain(value);
   }
 
-  net::URLRequestThrottlerManager::GetInstance()->set_enable_thread_checks(
-      true);
-
   SetDnsCertProvenanceCheckerFactory(CreateChromeDnsCertProvenanceChecker);
 
   if (parsed_command_line.HasSwitch(switches::kEnableWebSocketOverSpdy)) {
     // Enable WebSocket over SPDY.
     net::WebSocketJob::set_websocket_over_spdy_enabled(true);
   }
 }
 
+void InitializeURLRequestThrottlerManager(net::NetLog* net_log) {
+  net::URLRequestThrottlerManager::GetInstance()->set_enable_thread_checks(
+      true);
+
+  // TODO(joi): Passing the NetLog here is temporary; once I switch the
+  // URLRequestThrottlerManager to be part of the URLRequestContext it will
+  // come from there. Doing it this way for now (2011/5/12) to try to fail
+  // fast in case A/B experiment gives unexpected results.
+  net::URLRequestThrottlerManager::GetInstance()->set_net_log(net_log);
+}
+
 // Creates key child threads. We need to do this explicitly since
 // BrowserThread::PostTask silently deletes a posted task if the target message
 // loop isn't created.
 void CreateChildThreads(BrowserProcessImpl* process) {
   process->db_thread();
   process->file_thread();
   process->process_launcher_thread();
   process->cache_thread();
   process->io_thread();
 #if defined(OS_CHROMEOS)
@@ skipping 656 matching lines @@
 
   // TODO(viettrungluu): why don't we run this earlier?
   if (!parsed_command_line.HasSwitch(switches::kNoErrorDialogs))
     WarnAboutMinimumSystemRequirements();
 
   // Convert active labs into switches. Modifies the current command line.
   about_flags::ConvertFlagsToSwitches(local_state,
                                       CommandLine::ForCurrentProcess());
 
   InitializeNetworkOptions(parsed_command_line);
+  InitializeURLRequestThrottlerManager(browser_process->net_log());
 
   // Initialize histogram synchronizer system. This is a singleton and is used
   // for posting tasks via NewRunnableMethod. Its deleted when it goes out of
   // scope. Even though NewRunnableMethod does AddRef and Release, the object
   // will not be deleted after the Task is executed.
   scoped_refptr<HistogramSynchronizer> histogram_synchronizer(
       new HistogramSynchronizer());
 
   // Initialize thread watcher system. This is a singleton and is used by
   // WatchDogThread to keep track of information about threads that are being
@@ skipping 545 matching lines @@
 #if defined(OS_CHROMEOS)
   // To be precise, logout (browser shutdown) is not yet done, but the
   // remaining work is negligible, hence we say LogoutDone here.
   chromeos::BootTimesLoader::Get()->AddLogoutTimeMarker("LogoutDone",
                                                         false);
   chromeos::BootTimesLoader::Get()->WriteLogoutTimes();
 #endif
   TRACE_EVENT_END_ETW("BrowserMain", 0, 0);
   return result_code;
 }