chromium/third_party/grpc/src/src/core/ext/filters/client_channel/resolver/polling_resolver.h

//
// Copyright 2015 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_RESOLVER_POLLING_RESOLVER_H
#define GRPC_SRC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_POLLING_RESOLVER_H

#include <grpc/support/port_platform.h>

#include <memory>
#include <string>

#include "absl/status/status.h"
#include "absl/types/optional.h"

#include <grpc/event_engine/event_engine.h>

#include "src/core/lib/backoff/backoff.h"
#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/debug/trace.h"
#include "src/core/lib/gprpp/orphanable.h"
#include "src/core/lib/gprpp/time.h"
#include "src/core/lib/gprpp/work_serializer.h"
#include "src/core/lib/iomgr/iomgr_fwd.h"
#include "src/core/lib/resolver/resolver.h"
#include "src/core/lib/resolver/resolver_factory.h"

namespace grpc_core {

// A base class for polling-based resolvers.
// Handles cooldown and backoff timers.
// Implementations need only to implement StartRequest().
class PollingResolver : public Resolver { … };

}  // namespace grpc_core

#endif  // GRPC_SRC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_POLLING_RESOLVER_H