1 // Copyright 2023 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 #pragma once 15 16 #include "pw_rpc/client_server.h" 17 #include "pw_rpc/packet_meta.h" 18 #include "pw_rpc_transport/rpc_transport.h" 19 #include "pw_span/span.h" 20 #include "pw_status/status.h" 21 22 namespace pw::rpc { 23 24 // An RpcPacketProcessor implementation that uses an incoming RPC packet 25 // metadata to find its target service and sends the packet to that service for 26 // processing. 27 class ServiceRegistry : public RpcPacketProcessor { 28 public: ServiceRegistry(span<Channel> channels)29 explicit ServiceRegistry(span<Channel> channels) : client_server_(channels) {} 30 client_server()31 ClientServer& client_server() { return client_server_; } 32 33 template <typename Service> CreateClient(uint32_t channel_id)34 typename Service::Client CreateClient(uint32_t channel_id) { 35 return typename Service::Client(client_server_.client(), channel_id); 36 } 37 RegisterService(Service & service)38 void RegisterService(Service& service) { 39 client_server_.server().RegisterService(service); 40 } 41 ProcessRpcPacket(ConstByteSpan rpc_packet)42 Status ProcessRpcPacket(ConstByteSpan rpc_packet) override { 43 PW_TRY_ASSIGN(const auto meta, PacketMeta::FromBuffer(rpc_packet)); 44 if (meta.destination_is_client()) { 45 return client_server_.client().ProcessPacket(rpc_packet); 46 } 47 if (meta.destination_is_server()) { 48 return client_server_.server().ProcessPacket(rpc_packet); 49 } 50 return Status::DataLoss(); 51 } 52 53 private: 54 ClientServer client_server_; 55 }; 56 57 } // namespace pw::rpc 58