Record connection, registration, and receiving activities.

google_apis/gcm/engine/connection_factory_impl.cc

 // Copyright (c) 2013 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 "google_apis/gcm/engine/connection_factory_impl.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
 #include "google_apis/gcm/engine/connection_handler_impl.h"
+#include "google_apis/gcm/monitoring/gcm_stats_recorder.h"
 #include "google_apis/gcm/protocol/mcs.pb.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_network_session.h"
 #include "net/http/http_request_headers.h"
 #include "net/proxy/proxy_info.h"
 #include "net/socket/client_socket_handle.h"
 #include "net/socket/client_socket_pool_manager.h"
 #include "net/ssl/ssl_config_service.h"
 
 namespace gcm {
@@ skipping 16 matching lines @@
       now_ticks - login_time <=
           base::TimeDelta::FromSeconds(kConnectionResetWindowSecs);
 }
 
 }  // namespace
 
 ConnectionFactoryImpl::ConnectionFactoryImpl(
     const std::vector<GURL>& mcs_endpoints,
     const net::BackoffEntry::Policy& backoff_policy,
     scoped_refptr<net::HttpNetworkSession> network_session,
-    net::NetLog* net_log)
+    net::NetLog* net_log,
+    GCMStatsRecorder* recorder)
   : mcs_endpoints_(mcs_endpoints),
     next_endpoint_(0),
     last_successful_endpoint_(0),
     backoff_policy_(backoff_policy),
     network_session_(network_session),
     bound_net_log_(
         net::BoundNetLog::Make(net_log, net::NetLog::SOURCE_SOCKET)),
     pac_request_(NULL),
     connecting_(false),
     waiting_for_backoff_(false),
     logging_in_(false),
+    recorder_(recorder),
     weak_ptr_factory_(this) {
   DCHECK_GE(mcs_endpoints_.size(), 1U);
 }
 
 ConnectionFactoryImpl::~ConnectionFactoryImpl() {
   net::NetworkChangeNotifier::RemoveIPAddressObserver(this);
   net::NetworkChangeNotifier::RemoveConnectionTypeObserver(this);
   if (pac_request_) {
     network_session_->proxy_service()->CancelPacRequest(pac_request_);
     pac_request_ = NULL;
@@ skipping 42 matching lines @@
   if (connecting_ || logging_in_ || IsEndpointReachable()) {
     waiting_for_backoff_ = false;
     return;
   }
 
   if (backoff_entry_->ShouldRejectRequest()) {
     DVLOG(1) << "Delaying MCS endpoint connection for "
              << backoff_entry_->GetTimeUntilRelease().InMilliseconds()
              << " milliseconds.";
     waiting_for_backoff_ = true;
+    recorder_->RecordConnectionDelayedDueToBackoff(
+        backoff_entry_->GetTimeUntilRelease().InMilliseconds());
     base::MessageLoop::current()->PostDelayedTask(
         FROM_HERE,
         base::Bind(&ConnectionFactoryImpl::ConnectWithBackoff,
                    weak_ptr_factory_.GetWeakPtr()),
         backoff_entry_->GetTimeUntilRelease());
     return;
   }
 
   DVLOG(1) << "Attempting connection to MCS endpoint.";
   waiting_for_backoff_ = false;
   ConnectImpl();
 }
 
 bool ConnectionFactoryImpl::IsEndpointReachable() const {
   return connection_handler_ && connection_handler_->CanSendMessage();
 }
 
 void ConnectionFactoryImpl::SignalConnectionReset(
     ConnectionResetReason reason) {
   // A failure can trigger multiple resets, so no need to do anything if a
   // connection is already in progress.
   if (connecting_) {
     DVLOG(1) << "Connection in progress, ignoring reset.";
     return;
   }
 
   UMA_HISTOGRAM_ENUMERATION("GCM.ConnectionResetReason",
                             reason,
                             CONNECTION_RESET_COUNT);
+  recorder_->RecordConnectionResetSignaled(reason);
   if (!last_login_time_.is_null()) {
     UMA_HISTOGRAM_CUSTOM_TIMES("GCM.ConnectionUpTime",
                                NowTicks() - last_login_time_,
                                base::TimeDelta::FromSeconds(1),
                                base::TimeDelta::FromHours(24),
                                50);
     // |last_login_time_| will be reset below, before attempting the new
     // connection.
   }
 
@@ skipping 66 matching lines @@
   if (IsEndpointReachable())
     return mcs_endpoints_[last_successful_endpoint_];
   return mcs_endpoints_[next_endpoint_];
 }
 
 void ConnectionFactoryImpl::ConnectImpl() {
   DCHECK(!IsEndpointReachable());
   DCHECK(!socket_handle_.socket());
 
   connecting_ = true;
+  GURL cur_endpoint = GetCurrentEndpoint();

[jianli, 2014/04/23 17:22:35]

nit: avoid using abbreviation if possible. so name it as current_endpoint

[juyik, 2014/04/23 21:36:56]

Done.

+  recorder_->RecordConnectionInitiated(cur_endpoint.host());
   int status = network_session_->proxy_service()->ResolveProxy(
-      GetCurrentEndpoint(),
+      cur_endpoint,
       &proxy_info_,
       base::Bind(&ConnectionFactoryImpl::OnProxyResolveDone,
                  weak_ptr_factory_.GetWeakPtr()),
       &pac_request_,
       bound_net_log_);
   if (status != net::ERR_IO_PENDING)
     OnProxyResolveDone(status);
 }
 
 void ConnectionFactoryImpl::InitHandler() {
@@ skipping 52 matching lines @@
     connecting_ = false;
     Connect();
     return;
   }
 
   UMA_HISTOGRAM_BOOLEAN("GCM.ConnectionSuccessRate", true);
   UMA_HISTOGRAM_COUNTS("GCM.ConnectionEndpoint", next_endpoint_);
   UMA_HISTOGRAM_BOOLEAN("GCM.ConnectedViaProxy",
                         !(proxy_info_.is_empty() || proxy_info_.is_direct()));
   ReportSuccessfulProxyConnection();
+  recorder_->RecordConnectionSuccess();
 
   // Reset the endpoint back to the default.
   // TODO(zea): consider prioritizing endpoints more intelligently based on
   // which ones succeed most for this client? Although that will affect
   // measuring the success rate of the default endpoint vs fallback.
   last_successful_endpoint_ = next_endpoint_;
   next_endpoint_ = 0;
   connecting_ = false;
   logging_in_ = true;
   DVLOG(1) << "MCS endpoint socket connection success, starting login.";
@@ skipping 163 matching lines @@
   // the destroyed socket.
   if (connection_handler_)
     connection_handler_->Reset();
 
   if (socket_handle_.socket() && socket_handle_.socket()->IsConnected())
     socket_handle_.socket()->Disconnect();
   socket_handle_.Reset();
 }
 
 }  // namespace gcm