chromium/third_party/grpc/src/src/core/ext/filters/client_channel/subchannel_pool_interface.h

//
//
// 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.
//
//

#ifndef GRPC_SRC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_POOL_INTERFACE_H
#define GRPC_SRC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_POOL_INTERFACE_H

#include <grpc/support/port_platform.h>

#include <string>

#include "absl/strings/string_view.h"

#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/debug/trace.h"
#include "src/core/lib/gpr/useful.h"
#include "src/core/lib/gprpp/ref_counted.h"
#include "src/core/lib/gprpp/ref_counted_ptr.h"
#include "src/core/lib/iomgr/resolved_address.h"

namespace grpc_core {

class Subchannel;

extern TraceFlag grpc_subchannel_pool_trace;

// A key that can uniquely identify a subchannel.
class SubchannelKey { … };

// Interface for subchannel pool.
// TODO(juanlishen): This refcounting mechanism may lead to memory leak.
// To solve that, we should force polling to flush any pending callbacks, then
// shut down safely. See https://github.com/grpc/grpc/issues/12560.
class SubchannelPoolInterface : public RefCounted<SubchannelPoolInterface> { … };

}  // namespace grpc_core

#endif  // GRPC_SRC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SUBCHANNEL_POOL_INTERFACE_H