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// 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/build_commit_command.h"
#include <limits>
#include <set>
#include <string>
#include <vector>
#include "base/string_util.h"
#include "sync/engine/syncer_proto_util.h"
#include "sync/internal_api/public/base/unique_position.h"
#include "sync/protocol/bookmark_specifics.pb.h"
#include "sync/protocol/sync.pb.h"
#include "sync/sessions/ordered_commit_set.h"
#include "sync/sessions/sync_session.h"
#include "sync/syncable/directory.h"
#include "sync/syncable/entry.h"
#include "sync/syncable/syncable_base_transaction.h"
#include "sync/syncable/syncable_changes_version.h"
#include "sync/syncable/syncable_proto_util.h"
#include "sync/util/time.h"
using std::set;
using std::string;
using std::vector;
namespace syncer {
using sessions::SyncSession;
using syncable::Entry;
using syncable::IS_DEL;
using syncable::IS_UNAPPLIED_UPDATE;
using syncable::IS_UNSYNCED;
using syncable::Id;
using syncable::SPECIFICS;
using syncable::UNIQUE_POSITION;
BuildCommitCommand::BuildCommitCommand(
syncable::BaseTransaction* trans,
const sessions::OrderedCommitSet& batch_commit_set,
sync_pb::ClientToServerMessage* commit_message,
ExtensionsActivityMonitor::Records* extensions_activity_buffer)
: trans_(trans),
batch_commit_set_(batch_commit_set),
commit_message_(commit_message),
extensions_activity_buffer_(extensions_activity_buffer) {
}
BuildCommitCommand::~BuildCommitCommand() {}
void BuildCommitCommand::AddExtensionsActivityToMessage(
SyncSession* session, sync_pb::CommitMessage* message) {
// We only send ExtensionsActivity to the server if bookmarks are being
// committed.
ExtensionsActivityMonitor* monitor = session->context()->extensions_monitor();
if (batch_commit_set_.HasBookmarkCommitId()) {
// This isn't perfect, since the set of extensions activity may not
// correlate exactly with the items being committed. That's OK as
// long as we're looking for a rough estimate of extensions activity,
// not an precise mapping of which commits were triggered by which
// extension.
//
// We will push this list of extensions activity back into the
// ExtensionsActivityMonitor if this commit fails. That's why we must keep
// a copy of these records in the session.
monitor->GetAndClearRecords(extensions_activity_buffer_);
const ExtensionsActivityMonitor::Records& records =
*extensions_activity_buffer_;
for (ExtensionsActivityMonitor::Records::const_iterator it =
records.begin();
it != records.end(); ++it) {
sync_pb::ChromiumExtensionsActivity* activity_message =
message->add_extensions_activity();
activity_message->set_extension_id(it->second.extension_id);
activity_message->set_bookmark_writes_since_last_commit(
it->second.bookmark_write_count);
}
}
}
void BuildCommitCommand::AddClientConfigParamsToMessage(
SyncSession* session, sync_pb::CommitMessage* message) {
const ModelSafeRoutingInfo& routing_info = session->context()->routing_info();
sync_pb::ClientConfigParams* config_params = message->mutable_config_params();
for (std::map<ModelType, ModelSafeGroup>::const_iterator iter =
routing_info.begin(); iter != routing_info.end(); ++iter) {
if (ProxyTypes().Has(iter->first))
continue;
int field_number = GetSpecificsFieldNumberFromModelType(iter->first);
config_params->mutable_enabled_type_ids()->Add(field_number);
}
config_params->set_tabs_datatype_enabled(
routing_info.count(syncer::PROXY_TABS) > 0);
}
namespace {
void SetEntrySpecifics(Entry* meta_entry,
sync_pb::SyncEntity* sync_entry) {
// Add the new style extension and the folder bit.
sync_entry->mutable_specifics()->CopyFrom(meta_entry->Get(SPECIFICS));
sync_entry->set_folder(meta_entry->Get(syncable::IS_DIR));
DCHECK_EQ(meta_entry->GetModelType(), GetModelType(*sync_entry));
}
} // namespace
SyncerError BuildCommitCommand::ExecuteImpl(SyncSession* session) {
commit_message_->set_share(session->context()->account_name());
commit_message_->set_message_contents(sync_pb::ClientToServerMessage::COMMIT);
sync_pb::CommitMessage* commit_message = commit_message_->mutable_commit();
commit_message->set_cache_guid(trans_->directory()->cache_guid());
AddExtensionsActivityToMessage(session, commit_message);
AddClientConfigParamsToMessage(session, commit_message);
// Cache previously computed position values. Because |commit_ids|
// is already in sibling order, we should always hit this map after
// the first sibling in a consecutive run of commit items. The
// entries in this map are (low, high) values describing the
// space of positions that are immediate successors of the item
// whose ID is the map's key.
std::map<Id, std::pair<int64, int64> > position_map;
for (size_t i = 0; i < batch_commit_set_.Size(); i++) {
Id id = batch_commit_set_.GetCommitIdAt(i);
sync_pb::SyncEntity* sync_entry = commit_message->add_entries();
sync_entry->set_id_string(SyncableIdToProto(id));
Entry meta_entry(trans_, syncable::GET_BY_ID, id);
CHECK(meta_entry.good());
DCHECK_NE(0UL,
session->context()->routing_info().count(
meta_entry.GetModelType()))
<< "Committing change to datatype that's not actively enabled.";
string name = meta_entry.Get(syncable::NON_UNIQUE_NAME);
CHECK(!name.empty()); // Make sure this isn't an update.
TruncateUTF8ToByteSize(name, 255, &name);
sync_entry->set_name(name);
// Set the non_unique_name. If we do, the server ignores
// the |name| value (using |non_unique_name| instead), and will return
// in the CommitResponse a unique name if one is generated.
// We send both because it may aid in logging.
sync_entry->set_non_unique_name(name);
if (!meta_entry.Get(syncable::UNIQUE_CLIENT_TAG).empty()) {
sync_entry->set_client_defined_unique_tag(
meta_entry.Get(syncable::UNIQUE_CLIENT_TAG));
}
// Deleted items with server-unknown parent ids can be a problem so we set
// the parent to 0. (TODO(sync): Still true in protocol?).
Id new_parent_id;
if (meta_entry.Get(syncable::IS_DEL) &&
!meta_entry.Get(syncable::PARENT_ID).ServerKnows()) {
new_parent_id = trans_->root_id();
} else {
new_parent_id = meta_entry.Get(syncable::PARENT_ID);
}
sync_entry->set_parent_id_string(SyncableIdToProto(new_parent_id));
// If our parent has changed, send up the old one so the server
// can correctly deal with multiple parents.
// TODO(nick): With the server keeping track of the primary sync parent,
// it should not be necessary to provide the old_parent_id: the version
// number should suffice.
if (new_parent_id != meta_entry.Get(syncable::SERVER_PARENT_ID) &&
0 != meta_entry.Get(syncable::BASE_VERSION) &&
syncable::CHANGES_VERSION != meta_entry.Get(syncable::BASE_VERSION)) {
sync_entry->set_old_parent_id(
SyncableIdToProto(meta_entry.Get(syncable::SERVER_PARENT_ID)));
}
int64 version = meta_entry.Get(syncable::BASE_VERSION);
if (syncable::CHANGES_VERSION == version || 0 == version) {
// Undeletions are only supported for items that have a client tag.
DCHECK(!id.ServerKnows() ||
!meta_entry.Get(syncable::UNIQUE_CLIENT_TAG).empty())
<< meta_entry;
// Version 0 means to create or undelete an object.
sync_entry->set_version(0);
} else {
DCHECK(id.ServerKnows()) << meta_entry;
sync_entry->set_version(meta_entry.Get(syncable::BASE_VERSION));
}
sync_entry->set_ctime(TimeToProtoTime(meta_entry.Get(syncable::CTIME)));
sync_entry->set_mtime(TimeToProtoTime(meta_entry.Get(syncable::MTIME)));
// Deletion is final on the server, let's move things and then delete them.
if (meta_entry.Get(IS_DEL)) {
sync_entry->set_deleted(true);
} else {
if (meta_entry.Get(SPECIFICS).has_bookmark()) {
// Both insert_after_item_id and position_in_parent fields are set only
// for legacy reasons. See comments in sync.proto for more information.
const Id& prev_id = meta_entry.GetPredecessorId();
string prev_id_string =
prev_id.IsRoot() ? string() : prev_id.GetServerId();
sync_entry->set_insert_after_item_id(prev_id_string);
sync_entry->set_position_in_parent(
meta_entry.Get(UNIQUE_POSITION).ToInt64());
meta_entry.Get(UNIQUE_POSITION).ToProto(
sync_entry->mutable_unique_position());
}
SetEntrySpecifics(&meta_entry, sync_entry);
}
}
return SYNCER_OK;
}
} // namespace syncer
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