Each Service has Protocol, Hostname, Login, Password, Shared_Ptr to Logging facility...

[bpdyndnsd] / src / logger.cpp

/** @file
 * @brief Logger class implementation. This class implements the Logging facility.
 *
 *
 *
 * @copyright Intra2net AG
 * @license GPLv2
*/


#include "logger.h"

namespace po = boost::program_options;

using namespace std;

/**
 * Default Constructor
 */
Logger::Logger()
    : Loglevel(0)
    , Syslog(0)
{
    set_log_facility(Loglevel,Syslog);
    print_constructor_call("Logger");
}


/**
 * Default Destructor
 */
Logger::~Logger()
{
    print_destructor_call("Logger");
}


/**
 * Decides if Logging through syslog if enabled or through std.
 * @param msg The message to log.
 */
void Logger::log_notice(const string& msg)
{
    if ( Syslog )
        syslog(LOG_NOTICE,msg.c_str());
    else
        cout << msg;
}


/**
 * Decides if Logging through syslog if enabled or through std.
 * @param msg The message to log.
 */
void Logger::log_warning(const string& msg)
{
    if ( Syslog )
        syslog(LOG_WARNING,msg.c_str());
    else
        cout << msg;
}


/**
 * Decides if Logging through syslog if enabled or through std.
 * @param msg The message to log.
 */
void Logger::log_error(const string& msg)
{
    if ( Syslog )
        syslog(LOG_ERR,msg.c_str());
    else
        cerr << msg;
}


/**
 * Setter for member Loglevel.
 * @param _loglevel Value to set Loglevel to.
 */
void Logger::set_loglevel(const int _loglevel)
{
    Loglevel = _loglevel;
}


/**
 * Getter for member Loglevel.
 * @return Loglevel.
 */
int Logger::get_loglevel()
{
    return Loglevel;
}


/**
 * Setter for member Syslog.
 * @param _syslog Wether to log through syslog or not.
 */
void Logger::set_syslog(const bool _syslog)
{
    Syslog = _syslog;
}


/**
 * Getter for member Syslog.
 * @return True if logging through syslog is enabled, false otherwise.
 */
bool Logger::get_syslog()
{
    return Syslog;
}


/**
 * Initialize the logging facility.
 */
void Logger::set_log_facility(const int _loglevel, const bool _syslog)
{
    Loglevel = _loglevel;
    Syslog = _syslog;

    if ( Syslog )
        openlog("bpdyndnsd",LOG_PID,LOG_DAEMON);
}


/**
 * Prints out the usage to the command line.
 */
void Logger::print_usage(const po::options_description* opt_desc)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Usage: bpdyndnsd [Command line options]" << "\n" << endl;
        msg << *opt_desc << endl;
        log_notice(msg.str());
    }
}


/**
 * Prints out the programm name and the given version string on stdout.
 * @param version Version string.
 */
void Logger::print_version()
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Bullet proof dynamic dns daemon.\nbpdyndnsd " << VERSION << "." << REVISION << "." << RELEASE << endl;
        log_notice(msg.str());
    }
}


/**
 * Prints out the successful parsing of the command line options.
 */
void Logger::print_cmd_parsed()
{
    if ( 1 <= Loglevel )
    {
        ostringstream msg;
        msg << "Command line options successfully parsed." << endl;
        log_notice(msg.str());
    }
}


/**
 * Prints out the successful parsing of the config files.
 * @param config_path The specified config path.
 */
void Logger::print_conf_loaded(const string& config_path)
{
    if ( 1 <= Loglevel )
    {
        ostringstream msg;
        msg << "Config files successfully loaded in: " << config_path << endl;
        log_notice(msg.str());
    }
}


/**
 * Prints out the unsuccessful parsing of the config files.
 * @param config_path The specified config path.
 */
void Logger::print_conf_not_loaded(const string& config_path)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Config files couldn't be loaded in: " << config_path << endl;
        log_error(msg.str());
    }
}


/**
 * A file could not be opened for reading.
 * @param filename The filename.
 */
void Logger::print_error_opening(const string& filename)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Error opening file for reading: " << filename << endl;
        log_error(msg.str());
    }
}


/**
 * Desctructor of specified class was called.
 * @param _class Name of the class.
 */
void Logger::print_destructor_call(const string& _class)
{
    if ( 1 <= Loglevel )
    {
        ostringstream msg;
        msg << "Destructor call: " << _class << endl;
        log_notice(msg.str());
    }
}


/**
 * Constructor of specified class was called.
 * @param _class Name of the class.
 */
void Logger::print_constructor_call(const string& _class)
{
    if ( 1 <= Loglevel )
    {
        ostringstream msg;
        msg << "Constructor call: " << _class << endl;
        log_notice(msg.str());
    }
}


/**
 * Update method for specified service was called.
 * @param service The service for which is the update running.
 */
void Logger::print_update_service(const string& service)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Running update for service: " << service << endl;
        log_notice(msg.str());
    }
}


/**
 * An unknown option on the command line was detected.
 * @param unknown_option The unknown option.
 */
void Logger::print_unknown_cmd_option(const string& unknown_option)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Unknown option on command line detected: " << unknown_option << endl;
        log_error(msg.str());
    }
}


/**
 * An unknown protocol was specified.
 * @param protocol The unknown protocol.
 */
void Logger::print_unknown_protocol(const string& protocol)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Unknown protocol defined: " << protocol << endl;
        log_error(msg.str());
    }
}


/**
 * Loading a service config file.
 * @param filename The service config file.
 */
void Logger::print_load_service_conf(const string& filename)
{
    if ( 1 <= Loglevel )
    {
        ostringstream msg;
        msg << "Loading service config file: " << filename << endl;
        log_notice(msg.str());
    }
}


/**
 * Loading the main config file.
 * @param filename The main config file.
 */
void Logger::print_load_main_conf(const string& filename)
{
    if ( 1 <= Loglevel )
    {
        ostringstream msg;
        msg << "Loading main config file: " << filename << endl;
        log_notice(msg.str());
    }
}


/**
 * There is an unknown option in a service config file.
 * @param unknown_option The unknown option.
 */
void Logger::print_unknown_service_conf_option(const string& unknown_option)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Unknown option in service config file detected: " << unknown_option << endl;
        log_error(msg.str());
    }
}


/**
 * There is an unknown option in the main config file.
 * @param unknown_option The unknown option.
 */
void Logger::print_unknown_main_conf_option(const string& unknown_option)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Unknown option in main config file detected: " << unknown_option << endl;
        log_error(msg.str());
    }
}


/**
 * The defined config path doesn't exist or is not a directory.
 * @param config_path The defined config path.
 */
void Logger::print_error_config_path(const string& config_path)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Config path doesn't exists or is not a diretory: " << config_path << endl;
        log_error(msg.str());
    }
}


/**
 * There is a missing command line option to initialize a service object.
 */
void Logger::print_missing_cmd_service_option()
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Missing option to initialize service. Protocol, host, login and password must be specified." << endl;
        log_error(msg.str());
    }
}


/**
 * Process running as daemon.
 * @param pid The pid of the daemon.
 */
void Logger::print_runnig_as_daemon(const int pid)
{
    if ( 1 <= Loglevel )
    {
        ostringstream msg;
        msg << "Runnig as daemon: " << pid << endl;
        log_notice(msg.str());
    }
}


/**
 * Prints out the daemon mode.
 * @param daemon_mode The daemon mode.
 */
void Logger::print_daemon_mode(const bool daemon_mode)
{
    if ( 1 <= Loglevel )
    {
        string mode = "disabled";
        if (daemon_mode == true)
            mode = "enabled";
        ostringstream msg;
        msg << "Daemon mode is " << mode << "." << endl;
        log_notice(msg.str());
    }
}


/**
 * There was an error while trying to fork.
 */
void Logger::print_error_fork()
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Error while trying to fork." << endl;
        log_notice(msg.str());
    }
}


/**
 * A pid in the pidfile was found.
 * @param pid The pid found in the pidfile.
 */
void Logger::print_pid_found(const int pid)
{
    if ( 1 <= Loglevel )
    {
        ostringstream msg;
        msg << "Pidfile found: " << pid << ". Checking if process is still runnig..." << endl;
        log_notice(msg.str());
    }
}


/**
 * Another process is already running.
 * @param pid The pid of the other process.
 */
void Logger::print_process_already_running(const int pid)
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Another bpdyndnsd process with PID " << pid << " is already running!" << endl;
        log_error(msg.str());
    }
}


/**
 * SIGTERM caught.
 */
void Logger::print_caught_sigterm()
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Caught SIGTERM. Exiting..." << endl;
        log_notice(msg.str());
    }
}


/**
 * SIGUSR1 caught.
 */
void Logger::print_caught_siguser1()
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Caught SIGUSR1. Switching to offline mode..." << endl;
        log_notice(msg.str());
    }
}


/**
 * SIGHUP caught.
 */
void Logger::print_caught_sighup()
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Caught SIGHUP. Reloading config and switching to online mode..." << endl;
        log_notice(msg.str());
    }
}


/**
 * Error while setting signal handler.
 */
void Logger::print_error_setting_signal()
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Error while setting signal handler." << endl;
        log_error(msg.str());
    }
}


/**
 * Error while setting signal handler.
 */
void Logger::print_init_log_facility()
{
    if ( 1 <= Loglevel )
    {
        ostringstream msg;
        msg << "Initialized logging facility." << " Loglevel: " << Loglevel << " Syslog: " << Syslog << endl;
        log_notice(msg.str());
    }
}

/**
 * Be verbose. Currently we are in offline mode.
 */
void Logger::print_offline_mode()
{
    if ( 0 <= Loglevel )
    {
        ostringstream msg;
        msg << "Offline mode..." << endl;
        log_notice(msg.str());
    }
}