// Copyright 2021 The Pigweed 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
//
//     https://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.
#pragma once

#include "pw_containers/intrusive_list.h"

namespace pw::log_sink {

class Sink : public IntrusiveList<Sink>::Item {
 public:
  // Provides an entry to the sink (e.g. an encoded protobuf).
  virtual void HandleEntry(ConstByteSpan entry) = 0;
  // Informs the sink of an entry that was dropped. This is used to indicate
  // to the sink that it will produce gaps in outgoing entries.
  virtual void HandleDropped(size_t count = 1) = 0;

  virtual ~Sink() = default;
};

}  // namespace pw::log_sink