Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 1 | // Copyright 2020 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 | #include "pw_rpc/internal/base_server_writer.h" |
| 16 | |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 17 | #include "pw_rpc/internal/method.h" |
| 18 | #include "pw_rpc/internal/packet.h" |
Wyatt Hepler | 60fd70f | 2020-06-17 09:04:25 -0700 | [diff] [blame^] | 19 | #include "pw_rpc/internal/server.h" |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 20 | |
| 21 | namespace pw::rpc::internal { |
| 22 | |
Wyatt Hepler | 60fd70f | 2020-06-17 09:04:25 -0700 | [diff] [blame^] | 23 | BaseServerWriter::BaseServerWriter(ServerCall& call) |
| 24 | : call_(call), state_(kOpen) { |
| 25 | call_.server().RegisterWriter(*this); |
| 26 | } |
| 27 | |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 28 | BaseServerWriter& BaseServerWriter::operator=(BaseServerWriter&& other) { |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 29 | call_ = std::move(other.call_); |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 30 | response_ = std::move(other.response_); |
| 31 | state_ = std::move(other.state_); |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 32 | |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 33 | other.state_ = kClosed; |
| 34 | return *this; |
| 35 | } |
| 36 | |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 37 | void BaseServerWriter::Finish() { |
| 38 | if (!open()) { |
| 39 | return; |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 40 | } |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 41 | |
Wyatt Hepler | 60fd70f | 2020-06-17 09:04:25 -0700 | [diff] [blame^] | 42 | call_.server().RemoveWriter(*this); |
| 43 | |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 44 | // TODO(hepler): Send a control packet indicating that the stream has |
| 45 | // terminated. |
| 46 | |
| 47 | state_ = kClosed; |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 48 | } |
| 49 | |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 50 | span<std::byte> BaseServerWriter::AcquirePayloadBuffer() { |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 51 | if (!open()) { |
| 52 | return {}; |
| 53 | } |
| 54 | |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 55 | response_ = call_.channel().AcquireBuffer(); |
| 56 | return response_.payload(packet()); |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 57 | } |
| 58 | |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 59 | Status BaseServerWriter::ReleasePayloadBuffer(span<const std::byte> payload) { |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 60 | if (!open()) { |
| 61 | return Status::FAILED_PRECONDITION; |
| 62 | } |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 63 | return call_.channel().Send(response_, packet(payload)); |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 64 | } |
| 65 | |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 66 | Packet BaseServerWriter::packet(span<const std::byte> payload) const { |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 67 | return Packet(PacketType::RPC, |
Wyatt Hepler | 671946e | 2020-06-09 14:39:33 -0700 | [diff] [blame] | 68 | call_.channel().id(), |
| 69 | call_.service().id(), |
| 70 | method().id(), |
| 71 | payload); |
Wyatt Hepler | cb9d957 | 2020-06-01 11:25:58 -0700 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | } // namespace pw::rpc::internal |