2 * @brief The updater class implementation. This class implements the updater logic.
6 * @copyright Intra2net AG
12 #include "serviceholder.h"
16 #include <boost/foreach.hpp>
19 // Following boost macros are needed for serialization of derived classes through a base class pointer (Service *).
20 BOOST_CLASS_EXPORT_GUID(ODS, "ODS")
21 BOOST_CLASS_EXPORT_GUID(DHS, "DHS")
22 BOOST_CLASS_EXPORT_GUID(DYNDNS, "DYNDNS")
24 namespace fs = boost::filesystem;
29 * Default constructor which initializes the member Conf.
32 : IPHelp(new IPHelper)
34 // Initialize program wide Logger, at this point we don't know where to log and with which loglevel.
35 Logger::Ptr _log(new Logger);
39 // initialize Serviceholder
40 Serviceholder::Ptr _serviceholder(new Serviceholder(Log));
41 ServiceHolder = _serviceholder;
42 _serviceholder.reset();
45 Config::Ptr _config(new Config(Log,ServiceHolder));
61 * Load config and initialize helper classes.
62 * @param argc Number of arguments in array
63 * @param argv Array with cmd options
65 int Updater::load_config(int argc, char *argv[])
67 // load the cmd options
68 if ( init_config_from_cmd(argc,argv) != 0 )
71 // load the config and service files
72 if ( init_config_from_files() != 0 )
75 // init all helper classes
76 if ( init_helper_classes() != 0 )
84 * Reloading the config. Delete all Service objects and then init new Service objects from config files.
86 int Updater::reload_config()
88 // serialize all service objects
89 if ( ServiceHolder->serialize_services() != 0 )
92 // delete all service objects
93 ServiceHolder->delete_services();
95 // delete the actual Variables_map, perhaps with old cmd options which would overwrite new config file options.
96 Conf->delete_variables_map();
98 // load only config files
99 if ( init_config_from_files() != 0 )
102 // init all helper classes
103 if ( init_helper_classes() != 0 )
111 * Parse the command line arguments and initialize corresponding options.
112 * @param argc Number command line arguments.
113 * @param argv[] Array with arguments.
114 * @return 0 if cmd options successfully parsed, 1 if usage or version.
116 int Updater::init_config_from_cmd(int argc, char *argv[])
118 // Load the command line parameters
119 if( Conf->parse_cmd_line( argc, argv) != 0)
122 // If we have loaded the cmd options we need to init the log facility immediately in case debugging is enabled from cmd.
126 Log->print_cmd_parsed();
132 * Load the main config and the service definition files in config path.
133 * @return 0 if all is fine,
135 int Updater::init_config_from_files()
137 // Load the main and service config files in config path
138 if ( Conf->load_config_from_files() != 0 )
141 // Re-init log facility, perhaps new config file options for logger are set.
142 // These config file options will only overwrite the cmd options if the SIGHUP (reload config) is caught.
145 // Here we are. All Service Objects should be initialized, so it is time to deserialize the old service objects and compare them.
146 if ( ServiceHolder->deserialize_services() != 0 )
150 Log->print_conf_files_parsed();
156 * Init all Helper classes
159 int Updater::init_helper_classes()
161 // Initialize IPHelper
162 if ( init_ip_helper() != 0 )
170 * Init the IPHelp member with needed values.
171 * @return 0 if all is fine, -1 otherwise.
173 int Updater::init_ip_helper()
175 // initialize IPHelper
176 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()));
185 * Getter for member Config.
186 * @return Member Config.
188 Config::Ptr Updater::get_config() const
195 * Getter for member Logger.
196 * @return Member Logger.
198 Logger::Ptr Updater::get_logger() const
205 * Initialize the logging facility with loglevel and syslog.
207 void Updater::init_log_facility()
209 Log->set_log_facility(Conf->get_loglevel(),Conf->get_syslog(),Conf->get_external_warning_log(),Conf->get_external_warning_level());
210 Log->print_init_log_facility();
215 * Update all configured services.
217 void Updater::update_services()
219 list<Service::Ptr> services = ServiceHolder->get_services();
221 string ip = IPHelp->get_actual_ip();
225 BOOST_FOREACH(Service::Ptr &service, services )
227 string dns_recheck_ip = ip;
228 int current_time = time(NULL);
231 if ( service->get_last_updates()->size() > 0 )
232 lastupdated = service->get_last_updates()->front();
234 // 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)
235 if ( ((lastupdated != 0) && ((lastupdated + service->get_dns_cache_ttl()) < current_time)) || (lastupdated == 0) )
237 Log->print_recheck_dns_entry(service->get_hostname(),lastupdated,service->get_dns_cache_ttl(),current_time);
238 string _dns_recheck_ip = IPHelp->dns_query(service->get_hostname());
239 Log->print_cached_dns_entry(service->get_hostname(), _dns_recheck_ip, service->get_actual_ip());
240 if (!_dns_recheck_ip.empty())
241 dns_recheck_ip = _dns_recheck_ip;
244 // In case the local hosts IP (ip) differ from the IP set in the last update (actual_ip) or
245 // the IP of the dns record (dns_recheck_ip) differs from the IP of the local host (ip)
246 // then perform an update. This implies that the update is not performed if actual_ip == dns_recheck_ip.
247 // Special case when latupdated == 0 then only perform the update if dns_rechek_ip differs from ip
248 if ( ((service->get_actual_ip() != ip) && (lastupdated != 0)) || (dns_recheck_ip != ip) )
249 service->update(ip,current_time);
250 else if ( (service->get_actual_ip() != ip) && (lastupdated == 0) )
251 service->set_actual_ip(ip);
258 * Getter for member ServiceHolder.
259 * @return ServiceHolder
261 Serviceholder::Ptr Updater::get_service_holder() const
263 return ServiceHolder;