kea/src/lib/dhcpsrv/daemon.cc

// Copyright (C) 2014  Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.

#include <config.h>
#include <dhcpsrv/daemon.h>
#include <exceptions/exceptions.h>
#include <cc/data.h>
#include <boost/bind.hpp>
#include <logging.h>
#include <errno.h>

/// @brief provides default implementation for basic daemon operations
///
/// This file provides stub implementations that are expected to be redefined
/// in derived classes (e.g. ControlledDhcpv6Srv)
namespace isc {
namespace dhcp {

// This is an initial config file location.
std::string Daemon::config_file_ = "";

Daemon::Daemon()
    : signal_set_(), signal_handler_(), verbose_(false) {
}

Daemon::~Daemon() {
}

void Daemon::init(const std::string& config_file) {
    config_file_ = config_file;
}

void Daemon::cleanup() {

}

void Daemon::shutdown() {

}

void Daemon::handleSignal() {
    if (signal_set_ && signal_handler_) {
        signal_set_->handleNext(boost::bind(signal_handler_, _1));
    }
}

void Daemon::configureLogger(const isc::data::ConstElementPtr& log_config,
                             const ConfigurationPtr& storage,
                             bool verbose) {

    // This is utility class that translates JSON structures into formats
    // understandable by log4cplus.
    LogConfigParser parser(storage);

    if (!log_config) {
        // There was no logger configuration. Let's clear any config
        // and revert to the default.

        parser.applyDefaultConfiguration(verbose); // Set up default logging
        return;
    }

    isc::data::ConstElementPtr loggers;
    loggers = log_config->get("loggers");
    if (!loggers) {
        // There is Logging structure, but it doesn't have loggers
        // array in it. Let's clear any old logging configuration
        // we may have and revert to the default.

        parser.applyDefaultConfiguration(verbose); // Set up default logging
        return;
    }

    // Translate JSON structures into log4cplus formats
    parser.parseConfiguration(loggers, verbose);

    // Apply the configuration

    /// @todo: Once configuration unrolling is implemented,
    /// this call will be moved to a separate method.
    parser.applyConfiguration();
}

};
};