1 // Copyright 2021 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //      http://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,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #include "serializer.hpp"
16 
17 #include "event_message.pb.h"
18 
19 #include <phosphor-logging/log.hpp>
20 
21 #include <format>
22 
23 using phosphor::logging::level;
24 using phosphor::logging::log;
25 
26 std::string Serializer::Serialize(const NemoraDatagram* dgram)
27 {
28     std::string result;
29     switch (dgram->type)
30     {
31         case NemoraDatagramType::NemoraEvent:
32             result = SerializeEvent(static_cast<const NemoraEvent*>(dgram));
33             break;
34         default:
35             log<level::ERR>(
36                 std::format("Type with ID {} not supported by "
37                             "Serializer::Serialize(const NemoraDatagram*)",
38                             static_cast<int>(dgram->type))
39                     .c_str());
40     }
41 
42     return result;
43 }
44 
45 std::string Serializer::SerializeEvent(const NemoraEvent* event)
46 {
47     std::string result;
48     platforms::nemora::proto::EventSeries pb;
49 
50     pb.set_magic(NEMORA_EVENT_PB_MAGIC);
51 
52     const char* p_arr = reinterpret_cast<const char*>(event->mac);
53     pb.set_mac(p_arr, MAC_ADDR_SIZE);
54 
55     pb.set_sent_time_us(event->sent_time_s * 1000000);
56 
57     for (auto postcode : event->postcodes)
58     {
59         pb.add_postcodes(postcode);
60     }
61 
62     pb.set_postcodes_protocol(
63         platforms::nemora::proto::EventSeries::NATIVE_32_BIT);
64 
65     log<level::INFO>(
66         std::format("NemoraEvent {}", pb.DebugString().c_str()).c_str());
67     pb.SerializeToString(&result);
68     return result;
69 }
70