SocketConnection.cpp

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/*
 * SNode.C - A Slim Toolkit for Network Communication
 * Copyright (C) Volker Christian <me@vchrist.at>
 *               2020, 2021, 2022, 2023, 2024, 2025
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
/*
 * MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * furnished to do so, subject to the following conditions:
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 * The above copyright notice and this permission notice shall be included in
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#include "core/socket/stream/SocketConnection.h"
 
#include "core/socket/stream/SocketContext.h"
#include "core/socket/stream/SocketContextFactory.h"
#include "net/config/ConfigInstance.h"
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
#include "log/Logger.h"
 
#include <ctime>
#include <iomanip>
#include <sstream>
#include <vector>
struct tm;
 
#endif // DOXYGEN_SHOULD_SKIP_THIS
 
namespace core::socket::stream {
 
    SocketConnection::SocketConnection(int fd, const net::config::ConfigInstance* config)
        : instanceName(config->getInstanceName())
        , connectionName("[" + std::to_string(fd) + "]" + (!instanceName.empty() ? " " : "") + instanceName)
        , onlineSinceTimePoint(std::chrono::system_clock::now())
        , config(config) {
    }
 
    SocketConnection::~SocketConnection() {
    }
 
    void SocketConnection::setSocketContext(SocketContext* socketContext) {
        if (socketContext != nullptr) { // Perform a pending SocketContextSwitch
            this->socketContext = socketContext;
 
            LOG(DEBUG) << connectionName << ": SocketContext switch completed";
 
            socketContext->attach();
        } else {
            LOG(ERROR) << connectionName << ": SocketContext switch failed: no new SocketContext";
        }
    }
 
    void SocketConnection::sendToPeer(const std::string& data) {
        sendToPeer(data.data(), data.size());
    }
 
    void SocketConnection::sentToPeer(const std::vector<uint8_t>& data) {
        sendToPeer(reinterpret_cast<const char*>(data.data()), data.size());
    }
 
    void SocketConnection::sentToPeer(const std::vector<char>& data) {
        sendToPeer(data.data(), data.size());
    }
 
    const std::string& SocketConnection::getInstanceName() const {
        return instanceName;
    }
 
    const std::string& SocketConnection::getConnectionName() const {
        return connectionName;
    }
 
    SocketContext* SocketConnection::getSocketContext() const {
        return socketContext;
    }
 
    std::string SocketConnection::getOnlineSince() const {
        return timePointToString(onlineSinceTimePoint);
    }
 
    std::string SocketConnection::getOnlineDuration() const {
        return durationToString(onlineSinceTimePoint);
    }
 
    const net::config::ConfigInstance* SocketConnection::getConfig() const {
        return config;
    }
 
    void SocketConnection::connectSocketContext(const std::shared_ptr<SocketContextFactory>& socketContextFactory) {
        SocketContext* socketContext = socketContextFactory->create(this);
 
        if (socketContext != nullptr) {
            LOG(DEBUG) << connectionName << ": SocketContext created successful";
            setSocketContext(socketContext);
        } else {
            LOG(ERROR) << connectionName << ": SocketContext failed to create";
            close();
        }
    }
 
    std::string SocketConnection::timePointToString(const std::chrono::time_point<std::chrono::system_clock>& timePoint) {
        const std::time_t time = std::chrono::system_clock::to_time_t(timePoint);
        std::tm* tm_ptr = std::gmtime(&time);
 
        char buffer[100];
        std::string onlineSince = "Formatting error";
 
        // Format: "2025-02-02 14:30:00"
        if (std::strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S", tm_ptr) > 0) {
            onlineSince = std::string(buffer) + " UTC";
        }
 
        return onlineSince;
    }
 
    std::string SocketConnection::durationToString(const std::chrono::time_point<std::chrono::system_clock>& bevore,
                                                   const std::chrono::time_point<std::chrono::system_clock>& later) {
        using seconds_duration_type = std::chrono::duration<std::chrono::seconds::rep>::rep;
 
        const seconds_duration_type totalSeconds = std::chrono::duration_cast<std::chrono::seconds>(later - bevore).count();
 
        // Compute days, hours, minutes, and seconds
        const seconds_duration_type days = totalSeconds / 86400; // 86400 seconds in a day
        seconds_duration_type remainder = totalSeconds % 86400;
        const seconds_duration_type hours = remainder / 3600;
        remainder = remainder % 3600;
        const seconds_duration_type minutes = remainder / 60;
        const seconds_duration_type seconds = remainder % 60;
 
        // Format the components into a string using stringstream
        std::ostringstream oss;
        if (days > 0) {
            oss << days << " day" << (days == 1 ? "" : "s") << ", ";
        }
        oss << std::setw(2) << std::setfill('0') << hours << ":" << std::setw(2) << std::setfill('0') << minutes << ":" << std::setw(2)
            << std::setfill('0') << seconds;
 
        return oss.str();
    }
 
} // namespace core::socket::stream