| // Copyright (c) 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/notifier/invalidator_registrar.h" |
| |
| #include <cstddef> |
| #include <iterator> |
| #include <utility> |
| |
| #include "base/logging.h" |
| #include "sync/notifier/object_id_invalidation_map.h" |
| |
| namespace syncer { |
| |
| InvalidatorRegistrar::InvalidatorRegistrar() |
| : state_(DEFAULT_INVALIDATION_ERROR) {} |
| |
| InvalidatorRegistrar::~InvalidatorRegistrar() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| CHECK(!handlers_.might_have_observers()); |
| CHECK(handler_to_ids_map_.empty()); |
| } |
| |
| void InvalidatorRegistrar::RegisterHandler(InvalidationHandler* handler) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| CHECK(handler); |
| CHECK(!handlers_.HasObserver(handler)); |
| handlers_.AddObserver(handler); |
| } |
| |
| void InvalidatorRegistrar::UpdateRegisteredIds( |
| InvalidationHandler* handler, |
| const ObjectIdSet& ids) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| CHECK(handler); |
| CHECK(handlers_.HasObserver(handler)); |
| |
| for (HandlerIdsMap::const_iterator it = handler_to_ids_map_.begin(); |
| it != handler_to_ids_map_.end(); ++it) { |
| if (it->first == handler) { |
| continue; |
| } |
| |
| std::vector<invalidation::ObjectId> intersection; |
| std::set_intersection( |
| it->second.begin(), it->second.end(), |
| ids.begin(), ids.end(), |
| std::inserter(intersection, intersection.end()), |
| ObjectIdLessThan()); |
| CHECK(intersection.empty()) |
| << "Duplicate registration: trying to register " |
| << ObjectIdToString(*intersection.begin()) << " for " |
| << handler << " when it's already registered for " |
| << it->first; |
| } |
| |
| if (ids.empty()) { |
| handler_to_ids_map_.erase(handler); |
| } else { |
| handler_to_ids_map_[handler] = ids; |
| } |
| } |
| |
| void InvalidatorRegistrar::UnregisterHandler(InvalidationHandler* handler) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| CHECK(handler); |
| CHECK(handlers_.HasObserver(handler)); |
| handlers_.RemoveObserver(handler); |
| handler_to_ids_map_.erase(handler); |
| } |
| |
| ObjectIdSet InvalidatorRegistrar::GetRegisteredIds( |
| InvalidationHandler* handler) const { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| HandlerIdsMap::const_iterator lookup = handler_to_ids_map_.find(handler); |
| if (lookup != handler_to_ids_map_.end()) { |
| return lookup->second; |
| } else { |
| return ObjectIdSet(); |
| } |
| } |
| |
| ObjectIdSet InvalidatorRegistrar::GetAllRegisteredIds() const { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| ObjectIdSet registered_ids; |
| for (HandlerIdsMap::const_iterator it = handler_to_ids_map_.begin(); |
| it != handler_to_ids_map_.end(); ++it) { |
| registered_ids.insert(it->second.begin(), it->second.end()); |
| } |
| return registered_ids; |
| } |
| |
| void InvalidatorRegistrar::DispatchInvalidationsToHandlers( |
| const ObjectIdInvalidationMap& invalidation_map) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| // If we have no handlers, there's nothing to do. |
| if (!handlers_.might_have_observers()) { |
| return; |
| } |
| |
| for (HandlerIdsMap::iterator it = handler_to_ids_map_.begin(); |
| it != handler_to_ids_map_.end(); ++it) { |
| ObjectIdInvalidationMap to_emit = |
| invalidation_map.GetSubsetWithObjectIds(it->second); |
| if (!to_emit.Empty()) { |
| it->first->OnIncomingInvalidation(to_emit); |
| } |
| } |
| } |
| |
| void InvalidatorRegistrar::UpdateInvalidatorState(InvalidatorState state) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| DVLOG(1) << "New invalidator state: " << InvalidatorStateToString(state_) |
| << " -> " << InvalidatorStateToString(state); |
| state_ = state; |
| FOR_EACH_OBSERVER(InvalidationHandler, handlers_, |
| OnInvalidatorStateChange(state)); |
| } |
| |
| InvalidatorState InvalidatorRegistrar::GetInvalidatorState() const { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| return state_; |
| } |
| |
| bool InvalidatorRegistrar::IsHandlerRegisteredForTest( |
| InvalidationHandler* handler) const { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| return handlers_.HasObserver(handler); |
| } |
| |
| void InvalidatorRegistrar::DetachFromThreadForTest() { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| thread_checker_.DetachFromThread(); |
| } |
| |
| } // namespace syncer |