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//
//
// Copyright 2018 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//
#include <grpc/support/port_platform.h>
#include "src/core/ext/filters/client_channel/local_subchannel_pool.h"
#include "src/core/ext/filters/client_channel/subchannel.h"
namespace grpc_core {
RefCountedPtr<Subchannel> LocalSubchannelPool::RegisterSubchannel(
const SubchannelKey& key, RefCountedPtr<Subchannel> constructed) {
auto it = subchannel_map_.find(key);
// Because this pool is only accessed under the client channel's work
// serializer, and because FindSubchannel is checked before invoking
// RegisterSubchannel, no such subchannel should exist in the map.
GPR_ASSERT(it == subchannel_map_.end());
subchannel_map_[key] = constructed.get();
return constructed;
}
void LocalSubchannelPool::UnregisterSubchannel(const SubchannelKey& key,
Subchannel* subchannel) {
auto it = subchannel_map_.find(key);
// Because this subchannel pool is accessed only under the client
// channel's work serializer, any subchannel created by RegisterSubchannel
// will be deleted from the map in UnregisterSubchannel.
GPR_ASSERT(it != subchannel_map_.end());
GPR_ASSERT(it->second == subchannel);
subchannel_map_.erase(it);
}
RefCountedPtr<Subchannel> LocalSubchannelPool::FindSubchannel(
const SubchannelKey& key) {
auto it = subchannel_map_.find(key);
if (it == subchannel_map_.end()) return nullptr;
return it->second->Ref();
}
} // namespace grpc_core
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