sync: Expose sync functionality as functions

sync/engine/download_updates_command.cc

Index: sync/engine/download_updates_command.cc
diff --git a/sync/engine/download_updates_command.cc b/sync/engine/download_updates_command.cc
deleted file mode 100644
index 10f31070d4f42495c7c227ff3be0395d1bfb2e96..0000000000000000000000000000000000000000
--- a/sync/engine/download_updates_command.cc
+++ /dev/null
@@ -1,224 +0,0 @@
-// Copyright 2012 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 "sync/engine/download_updates_command.h"
-
-#include <string>
-
-#include "base/command_line.h"
-#include "sync/engine/syncer.h"
-#include "sync/engine/syncer_proto_util.h"
-#include "sync/internal_api/public/base/model_type_invalidation_map.h"
-#include "sync/sessions/nudge_tracker.h"
-#include "sync/syncable/directory.h"
-#include "sync/syncable/nigori_handler.h"
-#include "sync/syncable/syncable_read_transaction.h"
-
-using sync_pb::DebugInfo;
-
-namespace syncer {
-using sessions::StatusController;
-using sessions::SyncSession;
-using std::string;
-
-DownloadUpdatesCommand::DownloadUpdatesCommand(
-    bool create_mobile_bookmarks_folder)
-    : create_mobile_bookmarks_folder_(create_mobile_bookmarks_folder) {}
-
-DownloadUpdatesCommand::~DownloadUpdatesCommand() {}
-
-namespace {
-
-SyncerError HandleGetEncryptionKeyResponse(
-    const sync_pb::ClientToServerResponse& update_response,
-    syncable::Directory* dir) {
-  bool success = false;
-  if (update_response.get_updates().encryption_keys_size() == 0) {
-    LOG(ERROR) << "Failed to receive encryption key from server.";
-    return SERVER_RESPONSE_VALIDATION_FAILED;
-  }
-  syncable::ReadTransaction trans(FROM_HERE, dir);
-  syncable::NigoriHandler* nigori_handler = dir->GetNigoriHandler();
-  success = nigori_handler->SetKeystoreKeys(
-      update_response.get_updates().encryption_keys(),
-      &trans);
-
-  DVLOG(1) << "GetUpdates returned "
-           << update_response.get_updates().encryption_keys_size()
-           << "encryption keys. Nigori keystore key "
-           << (success ? "" : "not ") << "updated.";
-  return (success ? SYNCER_OK : SERVER_RESPONSE_VALIDATION_FAILED);
-}
-
-sync_pb::SyncEnums::GetUpdatesOrigin ConvertGetUpdateSourceToOrigin(
-    sync_pb::GetUpdatesCallerInfo::GetUpdatesSource source) {
-  switch (source) {
-    // Configurations:
-    case sync_pb::GetUpdatesCallerInfo::NEWLY_SUPPORTED_DATATYPE:
-      return sync_pb::SyncEnums::NEWLY_SUPPORTED_DATATYPE;
-    case sync_pb::GetUpdatesCallerInfo::MIGRATION:
-      return sync_pb::SyncEnums::MIGRATION;
-    case sync_pb::GetUpdatesCallerInfo::RECONFIGURATION:
-      return sync_pb::SyncEnums::RECONFIGURATION;
-    case sync_pb::GetUpdatesCallerInfo::NEW_CLIENT:
-      return sync_pb::SyncEnums::NEW_CLIENT;
-
-    // Poll, which never overlaps with anything else:
-    case sync_pb::GetUpdatesCallerInfo::PERIODIC:
-      return sync_pb::SyncEnums::PERIODIC;
-
-    // Overlapping normal-mode sources (fall-through is intentional):
-    case sync_pb::GetUpdatesCallerInfo::LOCAL:
-    case sync_pb::GetUpdatesCallerInfo::NOTIFICATION:
-    case sync_pb::GetUpdatesCallerInfo::DATATYPE_REFRESH:
-      return sync_pb::SyncEnums::GU_TRIGGER;
-
-    // Deprecated or invalid (fall-through is intentional):
-    case sync_pb::GetUpdatesCallerInfo::UNKNOWN:
-    case sync_pb::GetUpdatesCallerInfo::FIRST_UPDATE:
-    case sync_pb::GetUpdatesCallerInfo::SYNC_CYCLE_CONTINUATION:
-      NOTREACHED() << "Invalid source: " << source;
-      return sync_pb::SyncEnums::UNKNOWN_ORIGIN;
-  }
-  NOTREACHED();
-  return sync_pb::SyncEnums::UNKNOWN_ORIGIN;
-}
-
-}  // namespace
-
-SyncerError DownloadUpdatesCommand::ExecuteImpl(SyncSession* session) {
-  sync_pb::ClientToServerMessage client_to_server_message;
-  sync_pb::ClientToServerResponse update_response;
-
-  client_to_server_message.set_share(session->context()->account_name());
-  client_to_server_message.set_message_contents(
-      sync_pb::ClientToServerMessage::GET_UPDATES);
-  sync_pb::GetUpdatesMessage* get_updates =
-      client_to_server_message.mutable_get_updates();
-  get_updates->set_create_mobile_bookmarks_folder(
-      create_mobile_bookmarks_folder_);
-
-  sync_pb::SyncEnums::GetUpdatesOrigin origin =
-      ConvertGetUpdateSourceToOrigin(session->source().updates_source);
-
-  syncable::Directory* dir = session->context()->directory();
-
-  // Request updates for all enabled types.
-  const ModelTypeSet enabled_types =
-      GetRoutingInfoTypes(session->context()->routing_info());
-  DVLOG(1) << "Getting updates for types "
-           << ModelTypeSetToString(enabled_types);
-  DCHECK(!enabled_types.Empty());
-
-  const ModelTypeInvalidationMap& invalidation_map =
-      session->source().types;
-  for (ModelTypeSet::Iterator it = enabled_types.First();
-       it.Good(); it.Inc()) {
-    if (ProxyTypes().Has(it.Get()))
-      continue;
-
-    if (origin == sync_pb::SyncEnums::GU_TRIGGER) {
-      if (session->nudge_tracker()->IsTypeThrottled(it.Get())) {
-        continue;  // Skip throttled types.
-      }
-    } else {
-      DCHECK(!session->nudge_tracker());
-    }
-
-    sync_pb::DataTypeProgressMarker* progress_marker =
-        get_updates->add_from_progress_marker();
-    dir->GetDownloadProgress(it.Get(), progress_marker);
-
-    // Set notification hint if present.
-    ModelTypeInvalidationMap::const_iterator find_it =
-        invalidation_map.find(it.Get());
-    if (find_it != invalidation_map.end()) {
-      progress_marker->set_notification_hint(find_it->second.payload);
-    }
-
-    if (origin == sync_pb::SyncEnums::GU_TRIGGER) {
-      session->nudge_tracker()->FillProtoMessage(
-          it.Get(),
-          progress_marker->mutable_get_update_triggers());
-    }
-  }
-
-  bool need_encryption_key = false;
-  if (session->context()->keystore_encryption_enabled()) {
-    syncable::Directory* dir = session->context()->directory();
-    syncable::ReadTransaction trans(FROM_HERE, dir);
-    syncable::NigoriHandler* nigori_handler = dir->GetNigoriHandler();
-    need_encryption_key = nigori_handler->NeedKeystoreKey(&trans);
-    get_updates->set_need_encryption_key(need_encryption_key);
-
-  }
-
-  // We want folders for our associated types, always.  If we were to set
-  // this to false, the server would send just the non-container items
-  // (e.g. Bookmark URLs but not their containing folders).
-  get_updates->set_fetch_folders(true);
-
-  // Set GetUpdatesMessage.GetUpdatesCallerInfo information.
-  get_updates->mutable_caller_info()->set_source(
-      session->source().updates_source);
-  get_updates->mutable_caller_info()->set_notifications_enabled(
-      session->context()->notifications_enabled());
-
-  // Set the new and improved version of source, too.
-  get_updates->set_get_updates_origin(origin);
-
-  DebugInfo* debug_info = client_to_server_message.mutable_debug_info();
-
-  AppendClientDebugInfoIfNeeded(session, debug_info);
-
-  SyncerError result = SyncerProtoUtil::PostClientToServerMessage(
-      &client_to_server_message,
-      &update_response,
-      session);
-
-  DVLOG(2) << SyncerProtoUtil::ClientToServerResponseDebugString(
-      update_response);
-
-  StatusController* status = session->mutable_status_controller();
-  status->set_updates_request_types(enabled_types);
-  if (result != SYNCER_OK) {
-    status->mutable_updates_response()->Clear();
-    LOG(ERROR) << "PostClientToServerMessage() failed during GetUpdates";
-    return result;
-  }
-
-  status->mutable_updates_response()->CopyFrom(update_response);
-
-  DVLOG(1) << "GetUpdates "
-           << " returned " << update_response.get_updates().entries_size()
-           << " updates and indicated "
-           << update_response.get_updates().changes_remaining()
-           << " updates left on server.";
-
-  if (need_encryption_key ||
-      update_response.get_updates().encryption_keys_size() > 0) {
-    status->set_last_get_key_result(
-        HandleGetEncryptionKeyResponse(update_response, dir));
-  }
-
-  return result;
-}
-
-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()) {
-    DVLOG(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->mutable_status_controller()->set_debug_info_sent();
-  }
-}
-
-}  // namespace syncer