| // Copyright 2020 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 <cstddef> |
| #include <span> |
| #include <tuple> |
| |
| #include "pw_containers/intrusive_list.h" |
| #include "pw_rpc/channel.h" |
| #include "pw_rpc/internal/base_server_writer.h" |
| #include "pw_rpc/internal/channel.h" |
| #include "pw_rpc/internal/method.h" |
| #include "pw_rpc/service.h" |
| #include "pw_status/status.h" |
| |
| namespace pw::rpc { |
| |
| class Server { |
| public: |
| constexpr Server(std::span<Channel> channels) |
| : channels_(static_cast<internal::Channel*>(channels.data()), |
| channels.size()) {} |
| |
| ~Server(); |
| |
| // Registers a service with the server. This should not be called directly |
| // with a Service; instead, use a generated class which inherits from it. |
| void RegisterService(Service& service) { services_.push_front(service); } |
| |
| // Processes an RPC packet. The packet may contain an RPC request or a control |
| // packet, the result of which is processed in this function. Returns whether |
| // the packet was able to be processed: |
| // |
| // OK - The packet was processed by the server. |
| // DATA_LOSS - Failed to decode the packet. |
| // INVALID_ARGUMENT - The packet is intended for a client, not a server. |
| // |
| Status ProcessPacket(std::span<const std::byte> packet, |
| ChannelOutput& interface); |
| |
| constexpr size_t channel_count() const { return channels_.size(); } |
| |
| protected: |
| IntrusiveList<internal::BaseServerWriter>& writers() { return writers_; } |
| |
| private: |
| std::tuple<Service*, const internal::Method*> FindMethod( |
| const internal::Packet& packet); |
| |
| void HandleCancelPacket(const internal::Packet& request, |
| internal::Channel& channel); |
| void HandleClientError(const internal::Packet& packet); |
| |
| internal::Channel* FindChannel(uint32_t id) const; |
| internal::Channel* AssignChannel(uint32_t id, ChannelOutput& interface); |
| |
| std::span<internal::Channel> channels_; |
| IntrusiveList<Service> services_; |
| IntrusiveList<internal::BaseServerWriter> writers_; |
| }; |
| |
| } // namespace pw::rpc |