1// Copyright (c) 2011 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#include "chrome/browser/sync/engine/download_updates_command.h"
6
7#include <string>
8
9#include "chrome/browser/sync/engine/syncer.h"
10#include "chrome/browser/sync/engine/syncer_proto_util.h"
11#include "chrome/browser/sync/engine/syncproto.h"
12#include "chrome/browser/sync/syncable/directory_manager.h"
13#include "chrome/browser/sync/syncable/model_type_payload_map.h"
14
15using syncable::ScopedDirLookup;
16
17namespace browser_sync {
18using sessions::StatusController;
19using sessions::SyncSession;
20using std::string;
21using syncable::FIRST_REAL_MODEL_TYPE;
22using syncable::MODEL_TYPE_COUNT;
23
24DownloadUpdatesCommand::DownloadUpdatesCommand() {}
25DownloadUpdatesCommand::~DownloadUpdatesCommand() {}
26
27void DownloadUpdatesCommand::ExecuteImpl(SyncSession* session) {
28  ClientToServerMessage client_to_server_message;
29  ClientToServerResponse update_response;
30
31  client_to_server_message.set_share(session->context()->account_name());
32  client_to_server_message.set_message_contents(
33      ClientToServerMessage::GET_UPDATES);
34  GetUpdatesMessage* get_updates =
35      client_to_server_message.mutable_get_updates();
36
37  ScopedDirLookup dir(session->context()->directory_manager(),
38                      session->context()->account_name());
39  if (!dir.good()) {
40    LOG(ERROR) << "Scoped dir lookup failed!";
41    return;
42  }
43
44  // Request updates for all enabled types.
45  syncable::ModelTypeBitSet enabled_types;
46  const syncable::ModelTypePayloadMap& type_payload_map =
47      session->source().types;
48  for (ModelSafeRoutingInfo::const_iterator i = session->routing_info().begin();
49       i != session->routing_info().end(); ++i) {
50    syncable::ModelType model_type = syncable::ModelTypeFromInt(i->first);
51    enabled_types[i->first] = true;
52    sync_pb::DataTypeProgressMarker* progress_marker =
53        get_updates->add_from_progress_marker();
54    dir->GetDownloadProgress(model_type, progress_marker);
55
56    // Set notification hint if present.
57    syncable::ModelTypePayloadMap::const_iterator type_payload =
58        type_payload_map.find(i->first);
59    if (type_payload != type_payload_map.end()) {
60      progress_marker->set_notification_hint(type_payload->second);
61    }
62  }
63
64  VLOG(1) << "Getting updates for types " << enabled_types.to_string();
65  DCHECK(enabled_types.any());
66
67  // We want folders for our associated types, always.  If we were to set
68  // this to false, the server would send just the non-container items
69  // (e.g. Bookmark URLs but not their containing folders).
70  get_updates->set_fetch_folders(true);
71
72  // Set GetUpdatesMessage.GetUpdatesCallerInfo information.
73  get_updates->mutable_caller_info()->set_source(
74      session->TestAndSetSource().updates_source);
75  get_updates->mutable_caller_info()->set_notifications_enabled(
76      session->context()->notifications_enabled());
77
78  SyncerProtoUtil::AddRequestBirthday(dir, &client_to_server_message);
79
80  bool ok = SyncerProtoUtil::PostClientToServerMessage(
81      client_to_server_message,
82      &update_response,
83      session);
84
85  VLOG(2) << SyncerProtoUtil::ClientToServerResponseDebugString(
86      update_response);
87
88  StatusController* status = session->status_controller();
89  status->set_updates_request_types(enabled_types);
90  if (!ok) {
91    status->increment_num_consecutive_errors();
92    status->mutable_updates_response()->Clear();
93    LOG(ERROR) << "PostClientToServerMessage() failed during GetUpdates";
94    return;
95  }
96
97  status->mutable_updates_response()->CopyFrom(update_response);
98
99  VLOG(1) << "GetUpdates "
100          << " returned " << update_response.get_updates().entries_size()
101          << " updates and indicated "
102          << update_response.get_updates().changes_remaining()
103          << " updates left on server.";
104}
105
106void DownloadUpdatesCommand::SetRequestedTypes(
107    const syncable::ModelTypeBitSet& target_datatypes,
108    sync_pb::EntitySpecifics* filter_protobuf) {
109  // The datatypes which should be synced are dictated by the value of the
110  // ModelSafeRoutingInfo.  If a datatype is in the routing info map, it
111  // should be synced (even if it's GROUP_PASSIVE).
112  int requested_type_count = 0;
113  for (int i = FIRST_REAL_MODEL_TYPE; i < MODEL_TYPE_COUNT; ++i) {
114    if (target_datatypes[i]) {
115      requested_type_count++;
116      syncable::AddDefaultExtensionValue(syncable::ModelTypeFromInt(i),
117                                         filter_protobuf);
118    }
119  }
120  DCHECK_LT(0, requested_type_count) << "Doing GetUpdates with empty filter.";
121}
122
123}  // namespace browser_sync
124