[Sync] Move //components/sync_driver to //components/sync/driver.

components/sync/driver/generic_change_processor.cc

 // Copyright 2014 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 "components/sync_driver/generic_change_processor.h"
+#include "components/sync/driver/generic_change_processor.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
 #include "base/location.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/sync/api/sync_change.h"
 #include "components/sync/api/sync_error.h"
 #include "components/sync/api/syncable_service.h"
 #include "components/sync/base/unrecoverable_error_handler.h"
 #include "components/sync/core/base_node.h"
 #include "components/sync/core/change_record.h"
 #include "components/sync/core/data_type_error_handler.h"
 #include "components/sync/core/read_node.h"
 #include "components/sync/core/read_transaction.h"
 #include "components/sync/core/write_node.h"
 #include "components/sync/core/write_transaction.h"
+#include "components/sync/driver/sync_api_component_factory.h"
+#include "components/sync/driver/sync_client.h"
 #include "components/sync/syncable/entry.h"  // TODO(tim): Bug 123674.
-#include "components/sync_driver/sync_api_component_factory.h"
-#include "components/sync_driver/sync_client.h"
 
 namespace sync_driver {
 
 namespace {
 
 const int kContextSizeLimit = 1024;  // Datatype context size limit.
 
 void SetNodeSpecifics(const sync_pb::EntitySpecifics& entity_specifics,
                       syncer::WriteNode* write_node) {
   if (syncer::GetModelTypeFromSpecifics(entity_specifics) ==
-          syncer::PASSWORDS) {
+      syncer::PASSWORDS) {
     write_node->SetPasswordSpecifics(
         entity_specifics.password().client_only_encrypted_data());
   } else {
     write_node->SetEntitySpecifics(entity_specifics);
   }
 }
 
 // Helper function to convert AttachmentId to AttachmentMetadataRecord.
 sync_pb::AttachmentMetadataRecord AttachmentIdToRecord(
     const syncer::AttachmentId& attachment_id) {
   sync_pb::AttachmentMetadataRecord record;
   *record.mutable_id() = attachment_id.GetProto();
   return record;
 }
 
 // Replace |write_nodes|'s attachment ids with |attachment_ids|.
 void SetAttachmentMetadata(const syncer::AttachmentIdList& attachment_ids,
                            syncer::WriteNode* write_node) {
   DCHECK(write_node);
   sync_pb::AttachmentMetadata attachment_metadata;
   std::transform(
-      attachment_ids.begin(),
-      attachment_ids.end(),
+      attachment_ids.begin(), attachment_ids.end(),
       RepeatedFieldBackInserter(attachment_metadata.mutable_record()),
       AttachmentIdToRecord);
   write_node->SetAttachmentMetadata(attachment_metadata);
 }
 
 syncer::SyncData BuildRemoteSyncData(
     int64_t sync_id,
     const syncer::ReadNode& read_node,
     const syncer::AttachmentServiceProxy& attachment_service_proxy) {
   const syncer::AttachmentIdList& attachment_ids = read_node.GetAttachmentIds();
@@ skipping 75 matching lines @@
 GenericChangeProcessor::~GenericChangeProcessor() {
   DCHECK(CalledOnValidThread());
 }
 
 void GenericChangeProcessor::ApplyChangesFromSyncModel(
     const syncer::BaseTransaction* trans,
     int64_t model_version,
     const syncer::ImmutableChangeRecordList& changes) {
   DCHECK(CalledOnValidThread());
   DCHECK(syncer_changes_.empty());
-  for (syncer::ChangeRecordList::const_iterator it =
-           changes.Get().begin(); it != changes.Get().end(); ++it) {
+  for (syncer::ChangeRecordList::const_iterator it = changes.Get().begin();
+       it != changes.Get().end(); ++it) {
     if (it->action == syncer::ChangeRecord::ACTION_DELETE) {
       std::unique_ptr<sync_pb::EntitySpecifics> specifics;
       if (it->specifics.has_password()) {
         DCHECK(it->extra.get());
         specifics.reset(new sync_pb::EntitySpecifics(it->specifics));
-        specifics->mutable_password()->mutable_client_only_encrypted_data()->
-            CopyFrom(it->extra->unencrypted());
+        specifics->mutable_password()
+            ->mutable_client_only_encrypted_data()
+            ->CopyFrom(it->extra->unencrypted());
       }
       const syncer::AttachmentIdList empty_list_of_attachment_ids;
       syncer_changes_.push_back(syncer::SyncChange(
           FROM_HERE, syncer::SyncChange::ACTION_DELETE,
           syncer::SyncData::CreateRemoteData(
               it->id, specifics ? *specifics : it->specifics, base::Time(),
               empty_list_of_attachment_ids, attachment_service_proxy_)));
     } else {
       syncer::SyncChange::SyncChangeType action =
-          (it->action == syncer::ChangeRecord::ACTION_ADD) ?
-          syncer::SyncChange::ACTION_ADD : syncer::SyncChange::ACTION_UPDATE;
+          (it->action == syncer::ChangeRecord::ACTION_ADD)
+              ? syncer::SyncChange::ACTION_ADD
+              : syncer::SyncChange::ACTION_UPDATE;
       // Need to load specifics from node.
       syncer::ReadNode read_node(trans);
       if (read_node.InitByIdLookup(it->id) != syncer::BaseNode::INIT_OK) {
         syncer::SyncError error(
-            FROM_HERE,
-            syncer::SyncError::DATATYPE_ERROR,
+            FROM_HERE, syncer::SyncError::DATATYPE_ERROR,
             "Failed to look up data for received change with id " +
                 base::Int64ToString(it->id),
             syncer::GetModelTypeFromSpecifics(it->specifics));
         error_handler()->OnSingleDataTypeUnrecoverableError(error);
         return;
       }
       syncer_changes_.push_back(syncer::SyncChange(
           FROM_HERE, action,
           BuildRemoteSyncData(it->id, read_node, attachment_service_proxy_)));
     }
   }
 }
 
 void GenericChangeProcessor::CommitChangesFromSyncModel() {
   DCHECK(CalledOnValidThread());
   if (syncer_changes_.empty())
     return;
   if (!local_service_.get()) {
     syncer::ModelType type = syncer_changes_[0].sync_data().GetDataType();
-    syncer::SyncError error(FROM_HERE,
-                            syncer::SyncError::DATATYPE_ERROR,
-                            "Local service destroyed.",
-                            type);
+    syncer::SyncError error(FROM_HERE, syncer::SyncError::DATATYPE_ERROR,
+                            "Local service destroyed.", type);
     error_handler()->OnSingleDataTypeUnrecoverableError(error);
     return;
   }
-  syncer::SyncError error = local_service_->ProcessSyncChanges(FROM_HERE,
-                                                       syncer_changes_);
+  syncer::SyncError error =
+      local_service_->ProcessSyncChanges(FROM_HERE, syncer_changes_);
   syncer_changes_.clear();
   if (error.IsSet())
     error_handler()->OnSingleDataTypeUnrecoverableError(error);
 }
 
 syncer::SyncDataList GenericChangeProcessor::GetAllSyncData(
     syncer::ModelType type) const {
   DCHECK_EQ(type_, type);
   // This is slow / memory intensive.  Should be used sparingly by datatypes.
   syncer::SyncDataList data;
   GetAllSyncDataReturnError(&data);
   return data;
 }
 
 syncer::SyncError GenericChangeProcessor::UpdateDataTypeContext(
     syncer::ModelType type,
     syncer::SyncChangeProcessor::ContextRefreshStatus refresh_status,
     const std::string& context) {
   DCHECK(syncer::ProtocolTypes().Has(type));
   DCHECK_EQ(type_, type);
 
   if (context.size() > static_cast<size_t>(kContextSizeLimit)) {
-    return syncer::SyncError(FROM_HERE,
-                             syncer::SyncError::DATATYPE_ERROR,
-                             "Context size limit exceeded.",
-                             type);
+    return syncer::SyncError(FROM_HERE, syncer::SyncError::DATATYPE_ERROR,
+                             "Context size limit exceeded.", type);
   }
 
   syncer::WriteTransaction trans(FROM_HERE, share_handle());
   trans.SetDataTypeContext(type, refresh_status, context);
 
   // TODO(zea): plumb a pointer to the PSS or SyncManagerImpl here so we can
   // trigger a datatype nudge if |refresh_status == REFRESH_NEEDED|.
 
   return syncer::SyncError();
 }
 
 void GenericChangeProcessor::OnAttachmentUploaded(
     const syncer::AttachmentId& attachment_id) {
   syncer::WriteTransaction trans(FROM_HERE, share_handle());
   trans.UpdateEntriesMarkAttachmentAsOnServer(attachment_id);
 }
 
 syncer::SyncError GenericChangeProcessor::GetAllSyncDataReturnError(
     syncer::SyncDataList* current_sync_data) const {
   DCHECK(CalledOnValidThread());
   std::string type_name = syncer::ModelTypeToString(type_);
   syncer::ReadTransaction trans(FROM_HERE, share_handle());
   syncer::ReadNode root(&trans);
   if (root.InitTypeRoot(type_) != syncer::BaseNode::INIT_OK) {
-    syncer::SyncError error(FROM_HERE,
-                            syncer::SyncError::DATATYPE_ERROR,
+    syncer::SyncError error(FROM_HERE, syncer::SyncError::DATATYPE_ERROR,
                             "Server did not create the top-level " + type_name +
                                 " node. We might be running against an out-of-"
                                 "date server.",
                             type_);
     return error;
   }
 
   // TODO(akalin): We'll have to do a tree traversal for bookmarks.
   DCHECK_NE(type_, syncer::BOOKMARKS);
 
   std::vector<int64_t> child_ids;
   root.GetChildIds(&child_ids);
 
   for (std::vector<int64_t>::iterator it = child_ids.begin();
        it != child_ids.end(); ++it) {
     syncer::ReadNode sync_child_node(&trans);
-    if (sync_child_node.InitByIdLookup(*it) !=
-            syncer::BaseNode::INIT_OK) {
+    if (sync_child_node.InitByIdLookup(*it) != syncer::BaseNode::INIT_OK) {
       syncer::SyncError error(
-          FROM_HERE,
-          syncer::SyncError::DATATYPE_ERROR,
-          "Failed to fetch child node for type " + type_name + ".",
-          type_);
+          FROM_HERE, syncer::SyncError::DATATYPE_ERROR,
+          "Failed to fetch child node for type " + type_name + ".", type_);
       return error;
     }
     current_sync_data->push_back(BuildRemoteSyncData(
         sync_child_node.GetId(), sync_child_node, attachment_service_proxy_));
   }
   return syncer::SyncError();
 }
 
 bool GenericChangeProcessor::GetDataTypeContext(std::string* context) const {
   syncer::ReadTransaction trans(FROM_HERE, share_handle());
   sync_pb::DataTypeContext context_proto;
   trans.GetDataTypeContext(type_, &context_proto);
   if (!context_proto.has_context())
     return false;
 
-  DCHECK_EQ(type_,
-            syncer::GetModelTypeFromSpecificsFieldNumber(
-                context_proto.data_type_id()));
+  DCHECK_EQ(type_, syncer::GetModelTypeFromSpecificsFieldNumber(
+                       context_proto.data_type_id()));
   *context = context_proto.context();
   return true;
 }
 
 int GenericChangeProcessor::GetSyncCount() {
   syncer::ReadTransaction trans(FROM_HERE, share_handle());
   syncer::ReadNode root(&trans);
   if (root.InitTypeRoot(type_) != syncer::BaseNode::INIT_OK)
     return 0;
 
   // Subtract one to account for type's root node.
   return root.GetTotalNodeCount() - 1;
 }
 
 namespace {
 
 // WARNING: this code is sensitive to compiler optimizations. Be careful
 // modifying any code around an OnSingleDataTypeUnrecoverableError call, else
 // the compiler attempts to merge it with other calls, losing useful information
 // in breakpad uploads.
 syncer::SyncError LogLookupFailure(
     syncer::BaseNode::InitByLookupResult lookup_result,
     const tracked_objects::Location& from_here,
     const std::string& error_prefix,
     syncer::ModelType type,
     syncer::DataTypeErrorHandler* error_handler) {
   switch (lookup_result) {
     case syncer::BaseNode::INIT_FAILED_ENTRY_NOT_GOOD: {
       syncer::SyncError error;
-      error.Reset(from_here,
-                  error_prefix +
-                      "could not find entry matching the lookup criteria.",
-                  type);
+      error.Reset(
+          from_here,
+          error_prefix + "could not find entry matching the lookup criteria.",
+          type);
       error_handler->OnSingleDataTypeUnrecoverableError(error);
       LOG(ERROR) << "Delete: Bad entry.";
       return error;
     }
     case syncer::BaseNode::INIT_FAILED_ENTRY_IS_DEL: {
       syncer::SyncError error;
       error.Reset(from_here, error_prefix + "entry is already deleted.", type);
       error_handler->OnSingleDataTypeUnrecoverableError(error);
       LOG(ERROR) << "Delete: Deleted entry.";
       return error;
@@ skipping 27 matching lines @@
 
 syncer::SyncError AttemptDelete(const syncer::SyncChange& change,
                                 syncer::ModelType type,
                                 const std::string& type_str,
                                 syncer::WriteNode* node,
                                 syncer::DataTypeErrorHandler* error_handler) {
   DCHECK_EQ(change.change_type(), syncer::SyncChange::ACTION_DELETE);
   if (change.sync_data().IsLocal()) {
     const std::string& tag = syncer::SyncDataLocal(change.sync_data()).GetTag();
     if (tag.empty()) {
-      syncer::SyncError error(
-          FROM_HERE,
-          syncer::SyncError::DATATYPE_ERROR,
-          "Failed to delete " + type_str + " node. Local data, empty tag. " +
-              change.location().ToString(),
-          type);
+      syncer::SyncError error(FROM_HERE, syncer::SyncError::DATATYPE_ERROR,
+                              "Failed to delete " + type_str +
+                                  " node. Local data, empty tag. " +
+                                  change.location().ToString(),
+                              type);
       error_handler->OnSingleDataTypeUnrecoverableError(error);
       NOTREACHED();
       return error;
     }
 
     syncer::BaseNode::InitByLookupResult result =
         node->InitByClientTagLookup(change.sync_data().GetDataType(), tag);
     if (result != syncer::BaseNode::INIT_OK) {
-      return LogLookupFailure(
-          result, FROM_HERE,
-          "Failed to delete " + type_str + " node. Local data. " +
-              change.location().ToString(),
-          type, error_handler);
+      return LogLookupFailure(result, FROM_HERE,
+                              "Failed to delete " + type_str +
+                                  " node. Local data. " +
+                                  change.location().ToString(),
+                              type, error_handler);
     }
   } else {
     syncer::BaseNode::InitByLookupResult result = node->InitByIdLookup(
         syncer::SyncDataRemote(change.sync_data()).GetId());
     if (result != syncer::BaseNode::INIT_OK) {
-      return LogLookupFailure(
-          result, FROM_HERE,
-          "Failed to delete " + type_str + " node. Non-local data. " +
-              change.location().ToString(),
-          type, error_handler);
+      return LogLookupFailure(result, FROM_HERE,
+                              "Failed to delete " + type_str +
+                                  " node. Non-local data. " +
+                                  change.location().ToString(),
+                              type, error_handler);
     }
   }
   if (IsActOnceDataType(type))
     node->Drop();
   else
     node->Tombstone();
   return syncer::SyncError();
 }
 
 }  // namespace
 
 syncer::SyncError GenericChangeProcessor::ProcessSyncChanges(
     const tracked_objects::Location& from_here,
     const syncer::SyncChangeList& list_of_changes) {
   DCHECK(CalledOnValidThread());
 
   if (list_of_changes.empty()) {
     // No work. Exit without entering WriteTransaction.
     return syncer::SyncError();
   }
 
   // Keep track of brand new attachments so we can persist them on this device
   // and upload them to the server.
   syncer::AttachmentIdSet new_attachments;
 
   syncer::WriteTransaction trans(from_here, share_handle());
 
   for (syncer::SyncChangeList::const_iterator iter = list_of_changes.begin();
-       iter != list_of_changes.end();
-       ++iter) {
+       iter != list_of_changes.end(); ++iter) {
     const syncer::SyncChange& change = *iter;
     DCHECK_EQ(change.sync_data().GetDataType(), type_);
     std::string type_str = syncer::ModelTypeToString(type_);
     syncer::WriteNode sync_node(&trans);
     if (change.change_type() == syncer::SyncChange::ACTION_DELETE) {
       syncer::SyncError error =
           AttemptDelete(change, type_, type_str, &sync_node, error_handler());
       if (error.IsSet()) {
         NOTREACHED();
         return error;
       }
       if (merge_result_.get()) {
         merge_result_->set_num_items_deleted(
             merge_result_->num_items_deleted() + 1);
       }
     } else if (change.change_type() == syncer::SyncChange::ACTION_ADD) {
-      syncer::SyncError error = HandleActionAdd(
-          change, type_str, trans, &sync_node, &new_attachments);
+      syncer::SyncError error = HandleActionAdd(change, type_str, trans,
+                                                &sync_node, &new_attachments);
       if (error.IsSet()) {
         return error;
       }
     } else if (change.change_type() == syncer::SyncChange::ACTION_UPDATE) {
       syncer::SyncError error = HandleActionUpdate(
           change, type_str, trans, &sync_node, &new_attachments);
       if (error.IsSet()) {
         return error;
       }
     } else {
       syncer::SyncError error(
-          FROM_HERE,
-          syncer::SyncError::DATATYPE_ERROR,
+          FROM_HERE, syncer::SyncError::DATATYPE_ERROR,
           "Received unset SyncChange in the change processor, " +
               change.location().ToString(),
           type_);
       error_handler()->OnSingleDataTypeUnrecoverableError(error);
       NOTREACHED();
       LOG(ERROR) << "Unset sync change.";
       return error;
     }
   }
 
   if (!new_attachments.empty()) {
     // If datatype uses attachments it should have supplied attachment store
     // which would initialize attachment_service_. Fail if it isn't so.
     if (!attachment_service_.get()) {
       syncer::SyncError error(
-          FROM_HERE,
-          syncer::SyncError::DATATYPE_ERROR,
+          FROM_HERE, syncer::SyncError::DATATYPE_ERROR,
           "Datatype performs attachment operation without initializing "
           "attachment store",
           type_);
       error_handler()->OnSingleDataTypeUnrecoverableError(error);
       NOTREACHED();
       return error;
     }
     syncer::AttachmentIdList ids_to_upload;
     ids_to_upload.reserve(new_attachments.size());
     std::copy(new_attachments.begin(), new_attachments.end(),
@@ skipping 33 matching lines @@
       }
       case syncer::WriteNode::INIT_FAILED_COULD_NOT_CREATE_ENTRY: {
         syncer::SyncError error;
         error.Reset(FROM_HERE, error_prefix + "failed to create entry", type_);
         error_handler()->OnSingleDataTypeUnrecoverableError(error);
         LOG(ERROR) << "Create: Could not create entry.";
         return error;
       }
       case syncer::WriteNode::INIT_FAILED_SET_PREDECESSOR: {
         syncer::SyncError error;
-        error.Reset(
-            FROM_HERE, error_prefix + "failed to set predecessor", type_);
+        error.Reset(FROM_HERE, error_prefix + "failed to set predecessor",
+                    type_);
         error_handler()->OnSingleDataTypeUnrecoverableError(error);
         LOG(ERROR) << "Create: Bad predecessor.";
         return error;
       }
       case syncer::WriteNode::INIT_FAILED_DECRYPT_EXISTING_ENTRY: {
         syncer::SyncError error;
         error.Reset(FROM_HERE, error_prefix + "failed to decrypt", type_);
         error_handler()->OnSingleDataTypeUnrecoverableError(error);
         LOG(ERROR) << "Create: Failed to decrypt.";
         return error;
@@ skipping 85 matching lines @@
   }
   // TODO(sync): Support updating other parts of the sync node (title,
   // successor, parent, etc.).
   return syncer::SyncError();
 }
 
 bool GenericChangeProcessor::SyncModelHasUserCreatedNodes(bool* has_nodes) {
   DCHECK(CalledOnValidThread());
   DCHECK(has_nodes);
   std::string type_name = syncer::ModelTypeToString(type_);
-  std::string err_str = "Server did not create the top-level " + type_name +
+  std::string err_str =
+      "Server did not create the top-level " + type_name +
       " node. We might be running against an out-of-date server.";
   *has_nodes = false;
   syncer::ReadTransaction trans(FROM_HERE, share_handle());
   syncer::ReadNode type_root_node(&trans);
   if (type_root_node.InitTypeRoot(type_) != syncer::BaseNode::INIT_OK) {
     LOG(ERROR) << err_str;
     return false;
   }
 
   // The sync model has user created nodes if the type's root node has any
   // children.
   *has_nodes = type_root_node.HasChildren();
   return true;
 }
 
 bool GenericChangeProcessor::CryptoReadyIfNecessary() {
   DCHECK(CalledOnValidThread());
   // We only access the cryptographer while holding a transaction.
   syncer::ReadTransaction trans(FROM_HERE, share_handle());
   const syncer::ModelTypeSet encrypted_types = trans.GetEncryptedTypes();
   return !encrypted_types.Has(type_) || trans.GetCryptographer()->is_ready();
 }
 
-void GenericChangeProcessor::StartImpl() {
-}
+void GenericChangeProcessor::StartImpl() {}
 
 syncer::UserShare* GenericChangeProcessor::share_handle() const {
   DCHECK(CalledOnValidThread());
   return share_handle_;
 }
 
 void GenericChangeProcessor::UploadAllAttachmentsNotOnServer() {
   DCHECK(CalledOnValidThread());
   DCHECK(attachment_service_.get());
   syncer::AttachmentIdList ids;
   {
     syncer::ReadTransaction trans(FROM_HERE, share_handle());
     trans.GetAttachmentIdsToUpload(type_, &ids);
   }
   if (!ids.empty()) {
     attachment_service_->UploadAttachments(ids);
   }
 }
 
 std::unique_ptr<syncer::AttachmentService>
 GenericChangeProcessor::GetAttachmentService() const {
   return std::unique_ptr<syncer::AttachmentService>(
       new syncer::AttachmentServiceProxy(attachment_service_proxy_));
 }
 
 }  // namespace sync_driver