2 * @brief The updater class implementation. This class implements the updater logic.
6 * @copyright Intra2net AG
12 #include "serviceholder.h"
18 #include <boost/foreach.hpp>
21 // Following boost macros are needed for serialization of derived classes through a base class pointer (Service *).
22 BOOST_CLASS_EXPORT_GUID(ODS, "ODS")
23 BOOST_CLASS_EXPORT_GUID(DHS, "DHS")
24 BOOST_CLASS_EXPORT_GUID(DYNS, "DYNS")
25 BOOST_CLASS_EXPORT_GUID(DYNDNS, "DYNDNS")
28 namespace fs = boost::filesystem;
33 * Default constructor which initializes the member Conf.
36 : IPHelp(new IPHelper)
38 // Initialize program wide Logger, at this point we don't know where to log and with which loglevel.
39 Logger::Ptr _log(new Logger);
43 // initialize Serviceholder
44 Serviceholder::Ptr _serviceholder(new Serviceholder(Log));
45 ServiceHolder = _serviceholder;
46 _serviceholder.reset();
49 Config::Ptr _config(new Config(Log,ServiceHolder));
65 * Load config and initialize helper classes.
66 * @param argc Number of arguments in array
67 * @param argv Array with cmd options
69 int Updater::load_config(int argc, char *argv[])
71 // load the cmd options
72 if ( init_config_from_cmd(argc,argv) != 0 )
75 // load the config and service files
76 if ( init_config_from_files() != 0 )
79 // init all helper classes
80 if ( init_helper_classes() != 0 )
88 * Reloading the config. Delete all Service objects and then init new Service objects from config files.
90 int Updater::reload_config()
92 // serialize all service objects
93 if ( ServiceHolder->serialize_services() != 0 )
96 // delete all service objects
97 ServiceHolder->delete_services();
99 // delete the actual Variables_map, perhaps with old cmd options which would overwrite new config file options.
100 Conf->delete_variables_map();
102 // load only config files
103 if ( init_config_from_files() != 0 )
106 // init all helper classes
107 if ( init_helper_classes() != 0 )
115 * Parse the command line arguments and initialize corresponding options.
116 * @param argc Number command line arguments.
117 * @param argv[] Array with arguments.
118 * @return 0 if cmd options successfully parsed, 1 if usage or version.
120 int Updater::init_config_from_cmd(int argc, char *argv[])
122 // Load the command line parameters
123 if( Conf->parse_cmd_line( argc, argv) != 0)
126 // If we have loaded the cmd options we need to init the log facility immediately in case debugging is enabled from cmd.
130 Log->print_cmd_parsed();
136 * Load the main config and the service definition files in config path.
137 * @return 0 if all is fine,
139 int Updater::init_config_from_files()
141 // Load the main and service config files in config path
142 if ( Conf->load_config_from_files() != 0 )
145 // Re-init log facility, perhaps new config file options for logger are set.
146 // These config file options will only overwrite the cmd options if the SIGHUP (reload config) is caught.
149 // Here we are. All Service Objects should be initialized, so it is time to deserialize the old service objects and compare them.
150 if ( ServiceHolder->deserialize_services() != 0 )
154 Log->print_conf_files_parsed();
160 * Init all Helper classes
163 int Updater::init_helper_classes()
165 // Initialize IPHelper
166 if ( init_ip_helper() != 0 )
174 * Init the IPHelp member with needed values.
175 * @return 0 if all is fine, -1 otherwise.
177 int Updater::init_ip_helper()
179 // initialize IPHelper
180 IPHelper::Ptr _iphelp(new IPHelper(Log,Conf->get_webcheck_ip_url(),Conf->get_webcheck_ip_url_alt(),Conf->get_enable_ipv6(),Conf->get_proxy(),Conf->get_proxy_port()));
189 * Getter for member Config.
190 * @return Member Config.
192 Config::Ptr Updater::get_config() const
199 * Getter for member Logger.
200 * @return Member Logger.
202 Logger::Ptr Updater::get_logger() const
209 * Initialize the logging facility with loglevel and syslog.
211 void Updater::init_log_facility()
213 Log->set_log_facility(Conf->get_loglevel(),Conf->get_syslog(),Conf->get_external_warning_log(),Conf->get_external_warning_level());
214 Log->print_init_log_facility();
219 * Update all configured services.
221 void Updater::update_services()
223 list<Service::Ptr> services = ServiceHolder->get_services();
225 string ip = IPHelp->get_actual_ip();
229 BOOST_FOREACH(Service::Ptr &service, services )
231 string dns_recheck_ip = ip;
232 int current_time = time(NULL);
235 if ( service->get_last_updates()->size() > 0 )
236 lastupdated = service->get_last_updates()->front();
238 // If the dns cache ttl is expired or the service is updated for the first time, then get the actual ip of the dns record (this should be the IP in the last update)
239 if ( ((lastupdated != 0) && ((lastupdated + service->get_dns_cache_ttl()) < current_time)) || (lastupdated == 0) )
241 Log->print_recheck_dns_entry(service->get_hostname(),lastupdated,service->get_dns_cache_ttl(),current_time);
242 string _dns_recheck_ip = IPHelp->dns_query(service->get_hostname());
243 Log->print_cached_dns_entry(service->get_hostname(), _dns_recheck_ip, service->get_actual_ip());
244 if (!_dns_recheck_ip.empty())
245 dns_recheck_ip = _dns_recheck_ip;
248 // In case the local hosts IP (ip) differ from the IP set in the last update (actual_ip) or
249 // the IP of the dns record (dns_recheck_ip) differs from the IP of the local host (ip)
250 // then perform an update. This implies that the update is not performed if actual_ip == dns_recheck_ip.
251 // Special case when latupdated == 0 then only perform the update if dns_rechek_ip differs from ip
252 if ( ((service->get_actual_ip() != ip) && (lastupdated != 0)) || (dns_recheck_ip != ip) )
253 service->update(ip,current_time);
254 else if ( (service->get_actual_ip() != ip) && (lastupdated == 0) )
255 service->set_actual_ip(ip);
262 * Getter for member ServiceHolder.
263 * @return ServiceHolder
265 Serviceholder::Ptr Updater::get_service_holder() const
267 return ServiceHolder;