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// 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/sessions/sync_session.h"
#include <algorithm>
#include "chrome/browser/sync/syncable/directory_manager.h"
#include "chrome/browser/sync/syncable/model_type.h"
namespace browser_sync {
namespace sessions {
SyncSession::SyncSession(SyncSessionContext* context, Delegate* delegate,
const SyncSourceInfo& source,
const ModelSafeRoutingInfo& routing_info,
const std::vector<ModelSafeWorker*>& workers)
: context_(context),
source_(source),
write_transaction_(NULL),
delegate_(delegate),
workers_(workers),
routing_info_(routing_info) {
status_controller_.reset(new StatusController(routing_info_));
std::sort(workers_.begin(), workers_.end());
}
SyncSession::~SyncSession() {}
void SyncSession::Coalesce(const SyncSession& session) {
if (context_ != session.context() || delegate_ != session.delegate_) {
NOTREACHED();
return;
}
// When we coalesce sessions, the sync update source gets overwritten with the
// most recent, while the type/payload map gets merged.
CoalescePayloads(&source_.types, session.source_.types);
source_.updates_source = session.source_.updates_source;
std::vector<ModelSafeWorker*> temp;
std::set_union(workers_.begin(), workers_.end(),
session.workers_.begin(), session.workers_.end(),
std::back_inserter(temp));
workers_.swap(temp);
// We have to update the model safe routing info to the union. In case the
// same key is present in both pick the one from session.
for (ModelSafeRoutingInfo::const_iterator it =
session.routing_info_.begin();
it != session.routing_info_.end();
++it) {
routing_info_[it->first] = it->second;
}
}
void SyncSession::RebaseRoutingInfoWithLatest(SyncSession* session) {
ModelSafeRoutingInfo temp_routing_info;
// Take the intersecion and also set the routing info(it->second) from the
// passed in session.
for (ModelSafeRoutingInfo::const_iterator it =
session->routing_info_.begin(); it != session->routing_info_.end();
++it) {
if (routing_info_.find(it->first) != routing_info_.end()) {
temp_routing_info[it->first] = it->second;
}
}
// Now swap it.
routing_info_.swap(temp_routing_info);
// Now update the payload map.
PurgeStalePayload(&source_.types, session->routing_info_);
// Now update the workers.
std::vector<ModelSafeWorker*> temp;
std::set_intersection(workers_.begin(), workers_.end(),
session->workers_.begin(), session->workers_.end(),
std::back_inserter(temp));
workers_.swap(temp);
}
void SyncSession::ResetTransientState() {
status_controller_.reset(new StatusController(routing_info_));
}
SyncSessionSnapshot SyncSession::TakeSnapshot() const {
syncable::ScopedDirLookup dir(context_->directory_manager(),
context_->account_name());
if (!dir.good())
LOG(ERROR) << "Scoped dir lookup failed!";
bool is_share_useable = true;
syncable::ModelTypeBitSet initial_sync_ended;
std::string download_progress_markers[syncable::MODEL_TYPE_COUNT];
for (int i = 0; i < syncable::MODEL_TYPE_COUNT; ++i) {
syncable::ModelType type(syncable::ModelTypeFromInt(i));
if (routing_info_.count(type) != 0) {
if (dir->initial_sync_ended_for_type(type))
initial_sync_ended.set(type);
else
is_share_useable = false;
dir->GetDownloadProgressAsString(type, &download_progress_markers[i]);
}
}
return SyncSessionSnapshot(
status_controller_->syncer_status(),
status_controller_->error(),
status_controller_->num_server_changes_remaining(),
is_share_useable,
initial_sync_ended,
download_progress_markers,
HasMoreToSync(),
delegate_->IsSyncingCurrentlySilenced(),
status_controller_->unsynced_handles().size(),
status_controller_->TotalNumBlockingConflictingItems(),
status_controller_->TotalNumConflictingItems(),
status_controller_->did_commit_items(),
source_,
dir->GetEntriesCount(),
status_controller_->sync_start_time());
}
SyncSourceInfo SyncSession::TestAndSetSource() {
SyncSourceInfo old_source = source_;
source_ = SyncSourceInfo(
sync_pb::GetUpdatesCallerInfo::SYNC_CYCLE_CONTINUATION,
source_.types);
return old_source;
}
bool SyncSession::HasMoreToSync() const {
const StatusController* status = status_controller_.get();
return ((status->commit_ids().size() < status->unsynced_handles().size()) &&
status->syncer_status().num_successful_commits > 0) ||
status->conflict_sets_built() ||
status->conflicts_resolved();
// Or, we have conflicting updates, but we're making progress on
// resolving them...
}
} // namespace sessions
} // namespace browser_sync
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