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// Copyright 2022 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
// 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 <cstdint>
#include "pw_rpc/internal/packet.h"
#include "pw_rpc/service_id.h"
#include "pw_span/span.h"
#include "pw_status/status_with_size.h"
namespace pw::rpc {
// Metadata about a `pw_rpc` packet.
// For now, this metadata structure only includes a limited set of information
// about the contents of a packet, but it may be extended in the future.
class PacketMeta {
// Parses the metadata from a serialized packet.
static Result<PacketMeta> FromBuffer(ConstByteSpan data);
constexpr uint32_t channel_id() const { return channel_id_; }
constexpr ServiceId service_id() const { return service_id_; }
constexpr bool destination_is_client() const {
return destination_ == internal::Packet::kClient;
constexpr bool destination_is_server() const {
return destination_ == internal::Packet::kServer;
constexpr explicit PacketMeta(const internal::Packet packet)
: channel_id_(packet.channel_id()),
destination_(packet.destination()) {}
uint32_t channel_id_;
ServiceId service_id_;
internal::Packet::Destination destination_;
} // namespace pw::rpc