// $Id$ #include "ace/Svc_Conf.h" #include "ace/Get_Opt.h" #include "ace/ARGV.h" #include "ace/Malloc.h" #include "ace/Service_Manager.h" #include "ace/Service_Repository.h" #include "ace/Service_Types.h" #include "ace/Containers.h" #include "ace/Auto_Ptr.h" #include "ace/Reactor.h" #include "ace/Thread_Manager.h" #include "ace/Service_Config.h" #include "ace/XML_Svc_Conf.h" #include "ace/Auto_Ptr.h" #if !defined (__ACE_INLINE__) #include "ace/Service_Config.i" #endif /* __ACE_INLINE__ */ ACE_RCSID (ace, Service_Config, "$Id$") ACE_ALLOC_HOOK_DEFINE(ACE_Service_Config) void ACE_Service_Config::dump (void) const { ACE_TRACE ("ACE_Service_Config::dump"); } // All the factory functions that allocate default statically linked // services should be placed below. // Allocate a Service Manager. ACE_FACTORY_DEFINE (ACE, ACE_Service_Manager) // ---------------------------------------- // Set the signal handler to point to the handle_signal() function. ACE_Sig_Adapter *ACE_Service_Config::signal_handler_ = 0; // Trigger a reconfiguration. sig_atomic_t ACE_Service_Config::reconfig_occurred_ = 0; // = Set by command-line options. int ACE_Service_Config::be_a_daemon_ = 0; int ACE_Service_Config::no_static_svcs_ = 1; // Number of the signal used to trigger reconfiguration. int ACE_Service_Config::signum_ = SIGHUP; // Indicates where to write the logging output. This is typically // either a STREAM pipe or a socket address. const ACE_TCHAR *ACE_Service_Config::logger_key_ = ACE_DEFAULT_LOGGER_KEY; // The ACE_Service_Manager static service object is now defined by the // ACE_Object_Manager, in Object_Manager.cpp. // Are we initialized already? int ACE_Service_Config::is_initialized_ = 0; // List of statically configured services. ACE_STATIC_SVCS *ACE_Service_Config::static_svcs_ = 0; ACE_SVC_QUEUE *ACE_Service_Config::svc_queue_ = 0; ACE_SVC_QUEUE *ACE_Service_Config::svc_conf_file_queue_ = 0; ACE_STATIC_SVCS * ACE_Service_Config::static_svcs (void) { if (ACE_Service_Config::static_svcs_ == 0) ACE_NEW_RETURN (ACE_Service_Config::static_svcs_, ACE_STATIC_SVCS, 0); return ACE_Service_Config::static_svcs_; } // Totally remove from the daemon by removing it from the // ACE_Reactor, and unlinking it if necessary. int ACE_Service_Config::remove (const ACE_TCHAR svc_name[]) { ACE_TRACE ("ACE_Service_Config::remove"); return ACE_Service_Repository::instance ()->remove (svc_name); } // Suspend . Note that this will not unlink the service // from the daemon if it was dynamically linked, it will mark it as // being suspended in the Service Repository and call the // member function on the appropriate . A service // can be resumed later on by calling the method... int ACE_Service_Config::suspend (const ACE_TCHAR svc_name[]) { ACE_TRACE ("ACE_Service_Config::suspend"); return ACE_Service_Repository::instance ()->suspend (svc_name); } // Resume a SVC_NAME that was previously suspended or has not yet // been resumed (e.g., a static service). int ACE_Service_Config::resume (const ACE_TCHAR svc_name[]) { ACE_TRACE ("ACE_Service_Config::resume"); return ACE_Service_Repository::instance ()->resume (svc_name); } // Initialize the Service Repository. Note that this *must* be // performed in the constructor (rather than ) since otherwise // the repository will not be properly initialized to allow static // configuration of services... ACE_Service_Config::ACE_Service_Config (int ignore_static_svcs, size_t size, int signum) { ACE_TRACE ("ACE_Service_Config::ACE_Service_Config"); ACE_Service_Config::no_static_svcs_ = ignore_static_svcs; ACE_Service_Config::signum_ = signum; // Initialize the Service Repository. ACE_Service_Repository::instance (size); // Initialize the ACE_Reactor (the ACE_Reactor should be the same // size as the ACE_Service_Repository). ACE_Reactor::instance (); } int ACE_Service_Config::init_svc_conf_file_queue (void) { if (ACE_Service_Config::svc_conf_file_queue_ == 0) ACE_NEW_RETURN (ACE_Service_Config::svc_conf_file_queue_, ACE_SVC_QUEUE, -1); return 0; } // Handle the command-line options intended for the // ACE_Service_Config. int ACE_Service_Config::parse_args (int argc, ACE_TCHAR *argv[]) { ACE_TRACE ("ACE_Service_Config::parse_args"); ACE_Get_Opt getopt (argc, argv, ACE_LIB_TEXT ("bdf:k:nys:S:"), 1); // Start at argv[1]. if (ACE_Service_Config::init_svc_conf_file_queue () == -1) return -1; for (int c; (c = getopt ()) != -1; ) switch (c) { case 'b': ACE_Service_Config::be_a_daemon_ = 1; break; case 'd': ACE::debug (1); break; case 'f': if (ACE_Service_Config::svc_conf_file_queue_->enqueue_tail (ACE_TString (getopt.opt_arg ())) == -1) ACE_ERROR_RETURN ((LM_ERROR, ACE_LIB_TEXT ("%p\n"), "enqueue_tail"), -1); break; case 'k': ACE_Service_Config::logger_key_ = getopt.opt_arg (); break; case 'n': ACE_Service_Config::no_static_svcs_ = 1; break; case 'y': ACE_Service_Config::no_static_svcs_ = 0; break; case 's': { // There's no point in dealing with this on NT since it // doesn't really support signals very well... #if !defined (ACE_LACKS_UNIX_SIGNALS) ACE_Service_Config::signum_ = ACE_OS::atoi (getopt.opt_arg ()); if (ACE_Reactor::instance ()->register_handler (ACE_Service_Config::signum_, ACE_Service_Config::signal_handler_) == -1) ACE_ERROR_RETURN ((LM_ERROR, ACE_LIB_TEXT ("cannot obtain signal handler\n")), -1); #endif /* ACE_LACKS_UNIX_SIGNALS */ break; } case 'S': if (ACE_Service_Config::svc_queue_ == 0) ACE_NEW_RETURN (ACE_Service_Config::svc_queue_, ACE_SVC_QUEUE, -1); if (ACE_Service_Config::svc_queue_->enqueue_tail (ACE_TString (getopt.opt_arg ())) == -1) ACE_ERROR_RETURN ((LM_ERROR, ACE_LIB_TEXT ("%p\n"), "enqueue_tail"), -1); break; default: if (ACE::debug () > 0) ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("%c is not a ACE_Service_Config option\n"), c)); } return 0; } #if (ACE_USES_CLASSIC_SVC_CONF == 0) ACE_Service_Type * ACE_Service_Config::create_service_type (const ACE_TCHAR *n, ACE_Service_Type_Impl *o, ACE_DLL &dll, int active) { ACE_Service_Type *sp = 0; ACE_NEW_RETURN (sp, ACE_Service_Type (n, o, dll, active), 0); return sp; } #endif /* ACE_USES_CLASSIC_SVC_CONF == 0 */ ACE_Service_Type_Impl * ACE_Service_Config::create_service_type_impl (const ACE_TCHAR *name, int type, void *symbol, u_int flags, ACE_Service_Object_Exterminator gobbler) { ACE_Service_Type_Impl *stp = 0; // Note, the only place we need to put a case statement. This is // also the place where we'd put the RTTI tests, if the compiler // actually supported them! switch (type) { case ACE_Service_Type::SERVICE_OBJECT: ACE_NEW_RETURN (stp, ACE_Service_Object_Type ((ACE_Service_Object *) symbol, name, flags, gobbler), 0); break; case ACE_Service_Type::MODULE: ACE_NEW_RETURN (stp, ACE_Module_Type (symbol, name, flags), 0); break; case ACE_Service_Type::STREAM: ACE_NEW_RETURN (stp, ACE_Stream_Type (symbol, name, flags), 0); break; default: ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("unknown case\n"))); break; } return stp; } // Initialize and activate a statically linked service. int ACE_Service_Config::initialize (const ACE_TCHAR *svc_name, const ACE_TCHAR *parameters) { ACE_TRACE ("ACE_Service_Config::initialize"); ACE_ARGV args (parameters); ACE_Service_Type *srp = 0; if (ACE::debug ()) ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("opening static service %s\n"), svc_name)); if (ACE_Service_Repository::instance ()->find (svc_name, (const ACE_Service_Type **) &srp) == -1) ACE_ERROR_RETURN ((LM_ERROR, ACE_LIB_TEXT ("%s not found\n"), svc_name), -1); else if (srp->type ()->init (args.argc (), args.argv ()) == -1) { // Remove this entry. ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("static initialization failed, %p\n"), svc_name)); ACE_Service_Repository::instance ()->remove (svc_name); return -1; } else { srp->active (1); return 0; } } // Dynamically link the shared object file and retrieve a pointer to // the designated shared object in this file. int ACE_Service_Config::initialize (const ACE_Service_Type *sr, const ACE_TCHAR *parameters) { ACE_TRACE ("ACE_Service_Config::initialize"); ACE_ARGV args (parameters); if (ACE::debug ()) ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("opening dynamic service %s\n"), sr->name ())); if (sr->type ()->init (args.argc (), args.argv ()) == -1) { ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("dynamic initialization failed for %s\n"), sr->name ())); return -1; } else { if (ACE_Service_Repository::instance ()->insert (sr) == -1) ACE_ERROR_RETURN ((LM_ERROR, ACE_LIB_TEXT ("insertion failed, %p\n"), sr->name ()), -1); return 0; } } #if (ACE_USES_CLASSIC_SVC_CONF == 1) int ACE_Service_Config::process_directives_i (ACE_Svc_Conf_Param *param) { // AC 970827 Skip the heap check because yacc allocates a buffer // here which will be reported as a memory leak for some reason. ACE_NO_HEAP_CHECK // The fact that these are global variables means that we really // can't track the number of errors in multiple threads // simultaneously. ace_yyerrno = 0; ace_yylineno = 1; ace_yyparse (param); if (param->yyerrno > 0) { // This is a hack, better errors should be provided... errno = EINVAL; return param->yyerrno; } else return 0; } #else ACE_XML_Svc_Conf * ACE_Service_Config::get_xml_svc_conf (ACE_DLL &xmldll) { if (xmldll.open (ACE_LIB_TEXT ("ACEXML_XML_Svc_Conf_Parser")) == -1) ACE_ERROR_RETURN ((LM_ERROR, ACE_LIB_TEXT ("Fail to open ACEXML_XML_Svc_Conf_Parser: %p\n"), "ACE_Service_Config::get_xml_svc_conf"), 0); void *foo; foo = xmldll.symbol (ACE_LIB_TEXT ("_ACEXML_create_XML_Svc_Conf_Object")); // Cast the void* to long first. long tmp = ACE_reinterpret_cast (long, foo); ACE_XML_Svc_Conf::Factory factory = ACE_reinterpret_cast (ACE_XML_Svc_Conf::Factory, tmp); if (factory == 0) ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("Unable to resolve factory: %p\n"), xmldll.error ()), 0); return factory (); } #endif /* ACE_USES_CLASSIC_SVC_CONF == 1 */ int ACE_Service_Config::process_file (const ACE_TCHAR file[]) { ACE_TRACE ("ACE_Service_Config::process_file"); #if (ACE_USES_CLASSIC_SVC_CONF == 1) int result = 0; FILE *fp = ACE_OS::fopen (file, ACE_LIB_TEXT ("r")); if (fp == 0) { // Invalid svc.conf file. We'll report it here and break out of // the method. if (ACE::debug ()) ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("%p\n"), file)); errno = ENOENT; result = -1; } else { ACE_Svc_Conf_Param f (fp); // Keep track of the number of errors. result = ACE_Service_Config::process_directives_i (&f); (void) ACE_OS::fclose (fp); } return result; #else ACE_DLL dll; auto_ptr xml_svc_conf (ACE_Service_Config::get_xml_svc_conf (dll)); if (xml_svc_conf.get () == 0) return -1; return xml_svc_conf->parse_file (file); #endif /* ACE_USES_CLASSIC_SVC_CONF == 1 */ } int ACE_Service_Config::process_directive (const ACE_TCHAR directive[]) { ACE_TRACE ("ACE_Service_Config::process_directive"); if (ACE::debug ()) ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("Service_Config::process_directive - %s\n"), directive)); #if (ACE_USES_CLASSIC_SVC_CONF == 1) ACE_UNUSED_ARG (directive); ACE_Svc_Conf_Param d (directive); int result = ACE_Service_Config::process_directives_i (&d); return result; #else ACE_DLL dll; auto_ptr xml_svc_conf (ACE_Service_Config::get_xml_svc_conf (dll)); if (xml_svc_conf.get () == 0) return -1; return xml_svc_conf->parse_string (directive); #endif /* ACE_USES_CLASSIC_SVC_CONF == 1 */ } // Process service configuration requests as indicated in the queue of // svc.conf files. int ACE_Service_Config::process_directives (void) { ACE_TRACE ("ACE_Service_Config::process_directives"); int result = 0; if (ACE_Service_Config::svc_conf_file_queue_ != 0) { ACE_TString *sptr = 0; ACE_SVC_QUEUE &queue = *ACE_Service_Config::svc_conf_file_queue_; // Iterate through all the svc.conf files. for (ACE_SVC_QUEUE_ITERATOR iter (queue); iter.next (sptr) != 0; iter.advance ()) { int r = ACE_Service_Config::process_file (sptr->fast_rep ()); if (r < 0) { result = r; break; } result += r; } } return result; } int ACE_Service_Config::process_commandline_directives (void) { int result = 0; if (ACE_Service_Config::svc_queue_ != 0) { ACE_TString *sptr = 0; ACE_SVC_QUEUE &queue = *ACE_Service_Config::svc_queue_; for (ACE_SVC_QUEUE_ITERATOR iter (queue); iter.next (sptr) != 0; iter.advance ()) { // Process just a single directive. if (ACE_Service_Config::process_directive (sptr->fast_rep ()) != 0) { ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("%p\n"), ACE_LIB_TEXT ("process_directive"))); result = -1; } } delete ACE_Service_Config::svc_queue_; ACE_Service_Config::svc_queue_ = 0; } return result; } int ACE_Service_Config::process_directive (const ACE_Static_Svc_Descriptor &ssd, int force_replace) { if (!force_replace) { if (ACE_Service_Repository::instance ()->find (ssd.name_, 0, 0) >= 0) { // The service is already there, just return return 0; } } ACE_Service_Object_Exterminator gobbler; void *sym = (ssd.alloc_)(&gobbler); ACE_Service_Type_Impl *stp = ACE_Service_Config::create_service_type_impl (ssd.name_, ssd.type_, sym, ssd.flags_, gobbler); if (stp == 0) return 0; ACE_Service_Type *service_type; ACE_NEW_RETURN (service_type, ACE_Service_Type (ssd.name_, stp, 0, ssd.active_), -1); return ACE_Service_Repository::instance ()->insert (service_type); } // Add the default statically-linked services to the Service // Repository. int ACE_Service_Config::load_static_svcs (void) { ACE_TRACE ("ACE_Service_Config::load_static_svcs"); ACE_Static_Svc_Descriptor **ssdp = 0; ACE_STATIC_SVCS &svcs = *ACE_Service_Config::static_svcs (); for (ACE_STATIC_SVCS_ITERATOR iter (svcs); iter.next (ssdp) != 0; iter.advance ()) { ACE_Static_Svc_Descriptor *ssd = *ssdp; if (ACE_Service_Config::process_directive (*ssd, 1) == -1) return -1; } return 0; } // Performs an open without parsing command-line arguments. int ACE_Service_Config::open_i (const ACE_TCHAR program_name[], const ACE_TCHAR *logger_key, int ignore_default_svc_conf_file, int ignore_debug_flag) { int result = 0; ACE_TRACE ("ACE_Service_Config::open_i"); ACE_Log_Msg *log_msg = ACE_LOG_MSG; // Record the current log setting upon entering this thread. u_long old_process_mask = log_msg->priority_mask (ACE_Log_Msg::PROCESS); u_long old_thread_mask = log_msg->priority_mask (ACE_Log_Msg::THREAD); if (ACE_Service_Config::is_initialized_ != 0) // Guard against reentrant processing! return 0; else ACE_Service_Config::is_initialized_++; if (ACE_Service_Config::init_svc_conf_file_queue () == -1) return -1; else if (!ignore_default_svc_conf_file && ACE_Service_Config::svc_conf_file_queue_->is_empty () // Load the default "svc.conf" entry here if there weren't // overriding -f arguments in . && ACE_Service_Config::svc_conf_file_queue_->enqueue_tail (ACE_TString (ACE_DEFAULT_SVC_CONF)) == -1) ACE_ERROR_RETURN ((LM_ERROR, ACE_LIB_TEXT ("%p\n"), "enqueue_tail"), -1); if (ignore_debug_flag == 0) { // If -d was included as a startup parameter, the user wants debug // information printed during service initialization. if (ACE::debug ()) ACE_Log_Msg::enable_debug_messages (); else // The user has requested no debugging info. ACE_Log_Msg::disable_debug_messages (); } // Become a daemon before doing anything else. if (ACE_Service_Config::be_a_daemon_) ACE_Service_Config::start_daemon (); u_long flags = log_msg->flags (); if (flags == 0) // Only use STDERR if the caller hasn't already set the flags. flags = (u_long) ACE_Log_Msg::STDERR; const ACE_TCHAR *key = logger_key; if (key == 0 || ACE_OS::strcmp (key, ACE_DEFAULT_LOGGER_KEY) == 0) // Only use the static if the caller doesn't // override it in the parameter list or if the key supplied is // equal to the default static logger key. key = ACE_Service_Config::logger_key_; else ACE_SET_BITS (flags, ACE_Log_Msg::LOGGER); if (log_msg->open (program_name, flags, key) == -1) result = -1; else { if (ACE::debug ()) ACE_DEBUG ((LM_STARTUP, ACE_LIB_TEXT ("starting up daemon %n\n"))); // Initialize the Service Repository (this will still work if // user forgets to define an object of type ACE_Service_Config). ACE_Service_Repository::instance (ACE_Service_Config::MAX_SERVICES); // Initialize the ACE_Reactor (the ACE_Reactor should be the // same size as the ACE_Service_Repository). ACE_Reactor::instance (); // There's no point in dealing with this on NT since it doesn't // really support signals very well... #if !defined (ACE_LACKS_UNIX_SIGNALS) // @@ This really ought to be a Singleton. if (ACE_Reactor::instance ()->register_handler (ACE_Service_Config::signum_, ACE_Service_Config::signal_handler_) == -1) ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("can't register signal handler\n"))); #endif /* ACE_LACKS_UNIX_SIGNALS */ // See if we need to load the static services. if (ACE_Service_Config::no_static_svcs_ == 0 && ACE_Service_Config::load_static_svcs () == -1) result = -1; else { if (ACE_Service_Config::process_commandline_directives () == -1) result = -1; else result = ACE_Service_Config::process_directives (); } } { // Make sure to save/restore errno properly. ACE_Errno_Guard error (errno); if (ignore_debug_flag == 0) { // Reset debugging back to the way it was when we came into // into . log_msg->priority_mask (old_process_mask, ACE_Log_Msg::PROCESS); log_msg->priority_mask (old_thread_mask, ACE_Log_Msg::THREAD); } } return result; } ACE_Service_Config::ACE_Service_Config (const ACE_TCHAR program_name[], const ACE_TCHAR *logger_key) { ACE_TRACE ("ACE_Service_Config::ACE_Service_Config"); if (this->open (program_name, logger_key) == -1 && errno != ENOENT) // Only print out an error if it wasn't the svc.conf file that was // missing. ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("%p\n"), program_name)); } // Signal handling API to trigger dynamic reconfiguration. void ACE_Service_Config::handle_signal (int sig, siginfo_t *, ucontext_t *) { #if defined (ACE_NDEBUG) ACE_UNUSED_ARG (sig); #else /* ! ACE_NDEBUG */ ACE_ASSERT (ACE_Service_Config::signum_ == sig); #endif /* ! ACE_NDEBUG */ ACE_Service_Config::reconfig_occurred_ = 1; } // Trigger the reconfiguration process. void ACE_Service_Config::reconfigure (void) { ACE_TRACE ("ACE_Service_Config::reconfigure"); ACE_Service_Config::reconfig_occurred_ = 0; if (ACE::debug ()) { #if !defined (ACE_NLOGGING) time_t t = ACE_OS::time (0); #endif /* ! ACE_NLOGGING */ if (ACE::debug ()) ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("beginning reconfiguration at %s"), ACE_OS::ctime (&t))); } if (ACE_Service_Config::process_directives () == -1) ACE_ERROR ((LM_ERROR, ACE_LIB_TEXT ("%p\n"), ACE_LIB_TEXT ("process_directives"))); } // Tidy up and perform last rites on a terminating ACE_Service_Config. int ACE_Service_Config::close (void) { ACE_TRACE ("ACE_Service_Config::close"); ACE_Service_Config::is_initialized_--; if (ACE_Service_Config::is_initialized_ > 0) return 0; // Delete the service repository. All the objects inside the // service repository should already have been finalized. ACE_Service_Config::close_svcs (); // Delete the list fo svc.conf files delete ACE_Service_Config::svc_conf_file_queue_; ACE_Service_Config::svc_conf_file_queue_ = 0; // Delete the dynamically allocated static_svcs instance. delete ACE_Service_Config::static_svcs_; ACE_Service_Config::static_svcs_ = 0; return 0; } int ACE_Service_Config::close_svcs (void) { ACE_TRACE ("ACE_Service_Config::close_svcs"); ACE_Service_Repository::close_singleton (); return 0; } int ACE_Service_Config::fini_svcs (void) { ACE_TRACE ("ACE_Service_Config::fini_svcs"); // Clear the LM_DEBUG bit from log messages if appropriate if (ACE::debug ()) ACE_Log_Msg::disable_debug_messages (); int result = 0; if (ACE_Service_Repository::instance () != 0) result = ACE_Service_Repository::instance ()->fini (); // Since the fini() method of the objects inside the service // repository may reference the ACE singletons, they must be // destroyed after the objects have been finalized. ACE_Service_Config::close_singletons (); if (ACE::debug ()) ACE_Log_Msg::enable_debug_messages (); return result; } int ACE_Service_Config::close_singletons (void) { ACE_TRACE ("ACE_Service_Config::close_singletons"); #if ! defined (ACE_THREAD_MANAGER_LACKS_STATICS) ACE_Thread_Manager::close_singleton (); #endif /* ! ACE_THREAD_MANAGER_LACKS_STATICS */ return 0; } // Perform user-specified close activities and remove dynamic memory. ACE_Service_Config::~ACE_Service_Config (void) { ACE_TRACE ("ACE_Service_Config::~ACE_Service_Config"); } // ************************************************************ /* static */ int ACE_Service_Config::reconfig_occurred (void) { ACE_TRACE ("ACE_Service_Config::reconfig_occurred"); return ACE_Service_Config::reconfig_occurred_ != 0; } void ACE_Service_Config::reconfig_occurred (int config_occurred) { ACE_TRACE ("ACE_Service_Config::reconfig_occurred"); ACE_Service_Config::reconfig_occurred_ = config_occurred; } // Become a daemon (i.e., run as a "background" process). int ACE_Service_Config::start_daemon (void) { ACE_TRACE ("ACE_Service_Config::start_daemon"); return ACE::daemonize (); }