Send important client side event information to the server.

chrome/browser/sync/engine/download_updates_command.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/sync/engine/download_updates_command.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "chrome/browser/sync/engine/syncer.h"
 #include "chrome/browser/sync/engine/syncer_proto_util.h"
 #include "chrome/browser/sync/engine/syncproto.h"
 #include "chrome/browser/sync/syncable/directory_manager.h"
 #include "chrome/browser/sync/syncable/model_type_payload_map.h"
 #include "chrome/common/chrome_switches.h"
 
 using syncable::ScopedDirLookup;
 
+using sync_pb::DebugInfo;
+
 namespace browser_sync {
 using sessions::StatusController;
 using sessions::SyncSession;
 using std::string;
 using syncable::FIRST_REAL_MODEL_TYPE;
 using syncable::MODEL_TYPE_COUNT;
 
 DownloadUpdatesCommand::DownloadUpdatesCommand() {}
 DownloadUpdatesCommand::~DownloadUpdatesCommand() {}
 
@@ skipping 47 matching lines @@
   get_updates->set_fetch_folders(true);
 
   // Set GetUpdatesMessage.GetUpdatesCallerInfo information.
   get_updates->mutable_caller_info()->set_source(
       session->TestAndSetSource().updates_source);
   get_updates->mutable_caller_info()->set_notifications_enabled(
       session->context()->notifications_enabled());
 
   SyncerProtoUtil::AddRequestBirthday(dir, &client_to_server_message);
 
+  DebugInfo* debug_info = client_to_server_message.mutable_debug_info();
+
+  AppendClientDebugInfoIfNeeded(session, debug_info);
+
   bool ok = SyncerProtoUtil::PostClientToServerMessage(
       client_to_server_message,
       &update_response,
       session);
 
   VLOG(2) << SyncerProtoUtil::ClientToServerResponseDebugString(
       update_response);
 
   StatusController* status = session->status_controller();
   status->set_updates_request_types(enabled_types);
@@ skipping 23 matching lines @@
   for (int i = FIRST_REAL_MODEL_TYPE; i < MODEL_TYPE_COUNT; ++i) {
     if (target_datatypes[i]) {
       requested_type_count++;
       syncable::AddDefaultExtensionValue(syncable::ModelTypeFromInt(i),
                                          filter_protobuf);
     }
   }
   DCHECK_LT(0, requested_type_count) << "Doing GetUpdates with empty filter.";
 }
 
+void DownloadUpdatesCommand::AppendClientDebugInfoIfNeeded(
+    sessions::SyncSession* session,
+    DebugInfo* debug_info) {
+  // We want to send the debug info only once per sync cycle. Check if it has
+  // already been sent.
+  if (!session->status_controller()->debug_info_sent()) {
+    VLOG(1) << "Sending client debug info ...";
+    // could be null in some unit tests.
+    if (session->context()->debug_info_getter()) {
+      session->context()->debug_info_getter()->GetAndClearDebugInfo(
+          debug_info);
+    }
+    session->status_controller()->set_debug_info_sent();
+  }
+}
+
+
 }  // namespace browser_sync