1 // Copyright 2021 The Pigweed Authors
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
7 // https://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
16 #include "pw_containers/intrusive_list.h"
18 namespace pw::log_sink {
20 class Sink : public IntrusiveList<Sink>::Item {
22 // Provides an entry to the sink (e.g. an encoded protobuf).
23 virtual void HandleEntry(ConstByteSpan entry) = 0;
24 // Informs the sink of an entry that was dropped. This is used to indicate
25 // to the sink that it will produce gaps in outgoing entries.
26 virtual void HandleDropped(size_t count = 1) = 0;
28 virtual ~Sink() = default;
31 } // namespace pw::log_sink