1 // Copyright 2021 The Pigweed Authors 2 // 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 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 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 13 // the License. 14 15 #pragma once 16 17 #include "pw_log/proto/log.raw_rpc.pb.h" 18 #include "pw_log_rpc/rpc_log_drain_map.h" 19 #include "pw_status/status.h" 20 21 namespace pw::log_rpc { 22 23 // The RPC LogService provides a way to start a log stream on a known RPC 24 // channel with a writer provided on a call. Log streams maintenance is flexible 25 // and delegated outside the service. 26 class LogService final : public log::pw_rpc::raw::Logs::Service<LogService> { 27 public: LogService(RpcLogDrainMap & drains)28 LogService(RpcLogDrainMap& drains) : drains_(drains) {} 29 30 // Starts listening to logs on the given RPC channel and writer. The call is 31 // ignored if the channel was not pre-registered in the drain map. If there is 32 // an existent stream of logs for the given channel and previous writer, the 33 // writer in this call is closed without finishing the RPC call and the log 34 // stream using the previous writer continues. 35 void Listen(ConstByteSpan, rpc::RawServerWriter& writer); 36 37 private: 38 RpcLogDrainMap& drains_; 39 }; 40 41 } // namespace pw::log_rpc 42