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| 1 | +#include "../../InputArgs.h" |
| 2 | +#include <iomanip> |
| 3 | +#include <opendaq/opendaq.h> |
| 4 | + |
| 5 | +#include <fstream> |
| 6 | +#include <iostream> |
| 7 | +#include <sstream> |
| 8 | + |
| 9 | +using namespace daq; |
| 10 | + |
| 11 | +struct ConfigStruct { |
| 12 | + std::string brokerAddress; |
| 13 | + std::string configFilePath; |
| 14 | + bool exit = true; |
| 15 | + int error = 0; |
| 16 | +}; |
| 17 | + |
| 18 | +std::string to_string(uint64_t ts) |
| 19 | +{ |
| 20 | + using namespace std::chrono; |
| 21 | + |
| 22 | + system_clock::time_point tp = system_clock::time_point(microseconds(ts)); |
| 23 | + |
| 24 | + auto tt = system_clock::to_time_t(tp); |
| 25 | + std::tm tm = *std::localtime(&tt); |
| 26 | + |
| 27 | + auto us = duration_cast<milliseconds>(tp.time_since_epoch()) % 1000; |
| 28 | + |
| 29 | + std::ostringstream oss; |
| 30 | + oss << std::put_time(&tm, "%Y-%m-%d %H:%M:%S") << '.' << std::setfill('0') << std::setw(3) << us.count(); |
| 31 | + return oss.str(); |
| 32 | +} |
| 33 | + |
| 34 | +std::string to_string(daq::DataPacketPtr packet) |
| 35 | +{ |
| 36 | + std::string result; |
| 37 | + std::string data; |
| 38 | + switch (packet.getDataDescriptor().getSampleType()) |
| 39 | + { |
| 40 | + case SampleType::Float64: |
| 41 | + data = std::to_string(*(static_cast<double*>(packet.getData()))); |
| 42 | + break; |
| 43 | + case SampleType::UInt64: |
| 44 | + data = std::to_string(*(static_cast<uint64_t*>(packet.getData()))); |
| 45 | + break; |
| 46 | + case SampleType::Int64: |
| 47 | + data = std::to_string(*(static_cast<int64_t*>(packet.getData()))); |
| 48 | + break; |
| 49 | + case SampleType::Binary: |
| 50 | + data = '\"' + std::string(static_cast<char*>(packet.getData()), packet.getDataSize()) + '\"'; |
| 51 | + break; |
| 52 | + default: |
| 53 | + break; |
| 54 | + } |
| 55 | + std::string unitStr; |
| 56 | + if (auto unit = packet.getDataDescriptor().getUnit(); unit.assigned()) |
| 57 | + { |
| 58 | + if (auto s = unit.getSymbol(); s.assigned()) |
| 59 | + unitStr = " " + s.toStdString(); |
| 60 | + } |
| 61 | + |
| 62 | + result = fmt::format("SampleType : {}; Data: {}{};", convertSampleTypeToString(packet.getDataDescriptor().getSampleType()), data, unitStr); |
| 63 | + if (auto domainPacket = packet.getDomainPacket(); domainPacket.assigned()) |
| 64 | + { |
| 65 | + uint64_t ts = *(static_cast<uint64_t*>(domainPacket.getData())); |
| 66 | + result += fmt::format(" Time : {};", to_string(ts)); |
| 67 | + } |
| 68 | + return result; |
| 69 | +} |
| 70 | + |
| 71 | +std::string readFileToString(const std::string& filePath) |
| 72 | +{ |
| 73 | + std::ifstream file(filePath); |
| 74 | + if (!file) |
| 75 | + throw std::runtime_error("Failed to open file: " + filePath); |
| 76 | + |
| 77 | + std::ostringstream buffer; |
| 78 | + buffer << file.rdbuf(); // Read the entire file buffer |
| 79 | + return buffer.str(); |
| 80 | +} |
| 81 | + |
| 82 | +ConfigStruct StartUp(int argc, char* argv[]) |
| 83 | +{ |
| 84 | + ConfigStruct config; |
| 85 | + InputArgs args; |
| 86 | + args.addArg("--help", "Show help message"); |
| 87 | + args.addArg("--address", "MQTT broker address", true); |
| 88 | + args.setUsageHelp(APP_NAME " [options] <config file>"); |
| 89 | + args.parse(argc, argv); |
| 90 | + |
| 91 | + if (args.hasArg("--help") || args.hasUnknownArgs()) |
| 92 | + { |
| 93 | + args.printHelp(); |
| 94 | + config.error = 0; |
| 95 | + return config; |
| 96 | + } |
| 97 | + |
| 98 | + config.brokerAddress = args.getArgValue("--address", "127.0.0.1"); |
| 99 | + auto configFilePath = args.getPositionalArgs(); |
| 100 | + if (configFilePath.size() != 1) |
| 101 | + { |
| 102 | + std::cout << "Configuration file path is required." << std::endl; |
| 103 | + config.error = -1; |
| 104 | + return config; |
| 105 | + } |
| 106 | + if (configFilePath.size() > 1) |
| 107 | + { |
| 108 | + std::cout << "Only one configuration file path is allowed. The first one will be used - " << configFilePath[0] << std::endl; |
| 109 | + } |
| 110 | + config.configFilePath = std::move(configFilePath[0]); |
| 111 | + config.exit = false; |
| 112 | + return config; |
| 113 | +} |
| 114 | + |
| 115 | +int main(int argc, char* argv[]) |
| 116 | +{ |
| 117 | + // Parse input arguments |
| 118 | + auto appConfig = StartUp(argc, argv); |
| 119 | + if (appConfig.exit) |
| 120 | + { |
| 121 | + return appConfig.error; |
| 122 | + } |
| 123 | + |
| 124 | + // Create OpenDAQ instance and add MQTT broker device |
| 125 | + const InstancePtr instance = InstanceBuilder().addModulePath(MODULE_PATH).build(); |
| 126 | + auto brokerDevice = instance.addDevice("daq.mqtt://" + appConfig.brokerAddress); |
| 127 | + auto availableDeviceNodes = brokerDevice.getAvailableFunctionBlockTypes(); |
| 128 | + |
| 129 | + const std::string fbName = "@jsonMqttFb"; |
| 130 | + std::cout << "Try to add the " << fbName << std::endl; |
| 131 | + |
| 132 | + // Read JSON function block configuration from file and fill out the function block config |
| 133 | + const std::string jsonConfig = readFileToString(appConfig.configFilePath); |
| 134 | + auto config = availableDeviceNodes.get(fbName).createDefaultConfig(); |
| 135 | + config.setPropertyValue("SignalList", jsonConfig); |
| 136 | + |
| 137 | + // Add the JSON function block to the broker device |
| 138 | + daq::FunctionBlockPtr jsonFb = brokerDevice.addFunctionBlock(fbName, config); |
| 139 | + |
| 140 | + // Create packet readers for all signals |
| 141 | + const auto signals = jsonFb.getSignals(); |
| 142 | + std::map<std::string, PacketReaderPtr> packetReaders; |
| 143 | + for (const auto& s : signals) |
| 144 | + { |
| 145 | + packetReaders.emplace(std::pair<std::string, PacketReaderPtr>(s.getName().toStdString(), daq::PacketReader(s))); |
| 146 | + } |
| 147 | + |
| 148 | + // Start a thread to read packets from the readers |
| 149 | + std::atomic<bool> running = true; |
| 150 | + std::thread readerThread( |
| 151 | + [&packetReaders, &running]() |
| 152 | + { |
| 153 | + while (running) |
| 154 | + { |
| 155 | + for (const auto& [signal, reader] : packetReaders) |
| 156 | + { |
| 157 | + while (!reader.getEmpty() && running) |
| 158 | + { |
| 159 | + auto packet = reader.read(); |
| 160 | + if (packet.getType() == PacketType::Event) |
| 161 | + { |
| 162 | + std::cout << "Event packet is skipped!" << std::endl; |
| 163 | + } |
| 164 | + else if (packet.getType() == PacketType::Data) |
| 165 | + { |
| 166 | + const auto dataPacket = packet.asPtr<IDataPacket>(); |
| 167 | + std::cout << signal << " - " << to_string(dataPacket) << std::endl; |
| 168 | + } |
| 169 | + } |
| 170 | + } |
| 171 | + std::this_thread::sleep_for(std::chrono::milliseconds(20)); |
| 172 | + } |
| 173 | + }); |
| 174 | + |
| 175 | + std::cout << "Press \"enter\" to exit the application..." << std::endl; |
| 176 | + std::cin.get(); |
| 177 | + |
| 178 | + running = false; |
| 179 | + readerThread.join(); |
| 180 | + std::cout << "Reader thread finished. Exiting.\n"; |
| 181 | + |
| 182 | + return 0; |
| 183 | +} |
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