src/plpbus/OrbServerImpl.cc

   1 /*
   2  * OrbServerImpl.cc
   3  *
   4  *  Created on: Aug 11, 2010
   5  *      Author: lamikr
   6  */
   7
   8 #include <plp/log.h>
   9
  10 #include "ServerEventThread.hh"
  11 #include "OrbServerImpl.hh"
  12 #include "ClientServerCommon.hh"
  13 #include "BusMessageInternal.hh"
  14
  15 using namespace std;
  16 using namespace plpbus;
  17 using namespace plpbus_orb;
  18
  19 static omni_mutex       server_thread_mutex;
  20 static omni_condition   server_thread_shutdown_signal(&server_thread_mutex);
  21
  22 OrbServerImpl::OrbServerImpl()
  23 {
  24         _orb                    = NULL;
  25         _poa                    = NULL;
  26         _server_thread_count    = 0;
  27         _shutdown_pending       = 0;
  28         _listener               = NULL;
  29 }
  30
  31 OrbServerImpl::~OrbServerImpl()
  32 {
  33         log_info("OrbServerImpl destroyed.\n");
  34 }
  35
  36 void OrbServerImpl::send_message_and_request_response(OrbClient_ptr response_listener_param,
  37                                                 const char* msg_req)
  38 {
  39         const char *msg_rsp;
  40
  41         msg_rsp = NULL;
  42         if (CORBA::is_nil(response_listener_param) == false) {
  43                 if (_listener != NULL) {
  44                         log_debug("send_message_and_request_response(): %s, server callback != NULL\n", msg_req);
  45                         _listener->request_received(msg_req, &msg_rsp);
  46                         log_debug("send_message_and_request_response(), request_received\n");
  47                         response_listener_param->receive_response_message(msg_rsp);
  48                 }
  49                 else {
  50                         log_error("send_message_and_request_response() error, server callback == NULL\n");
  51                 }
  52         }
  53         else {
  54                 log_error("invalid callback object received.\n");
  55         }
  56 }
  57
  58 char *OrbServerImpl::send_message_and_wait_response(const char* msg_req_param, ::CORBA::Long& err_flg) {
  59         const char      *msg_rsp;
  60         char            *ret_val;
  61
  62         err_flg = 0;
  63         msg_rsp = NULL;
  64         if (_listener != NULL) {
  65                 log_debug("send_message_and_wait_response(): %s, server_callback != NULL\n", msg_req_param);
  66                 _listener->request_received(msg_req_param, &msg_rsp);
  67                 //ret_val       = CORBA::string_dup(msg_rsp);
  68                 ret_val = CORBA::string_dup(msg_rsp);
  69         }
  70         else {
  71                 log_error("send_message_and_wait_response() error, server callback == NULL\n");
  72                 ret_val = CORBA::string_dup(msg_req_param);
  73                 err_flg = -1;
  74         }
  75         return ret_val;
  76 }
  77
  78 void OrbServerImpl::send_dataitem_message_and_request_response(OrbClient_ptr response_listener_param,
  79                                                         const ::DataItemSequence& msg_req_param) {
  80         BusMessage              *msg_req;
  81         BusMessage              *msg_rsp;
  82         DataItemSequence        *seq;
  83         int                     err_flg;
  84
  85         if (CORBA::is_nil(response_listener_param) == false) {
  86                 if (_listener != NULL) {
  87                         msg_req = new BusMessageInternal(msg_req_param);
  88                         log_debug("send_dataitem_message_and_request_response(), server_callback != NULL\n");
  89                         log_debug("msg_req:\n");
  90                         msg_req->printout();
  91                         msg_rsp = NULL;
  92                         err_flg = 0;
  93                         msg_rsp = new BusMessage(msg_req->get_type(&err_flg));
  94                         _listener->request_received(msg_req, msg_rsp);
  95                         seq     = (DataItemSequence *)msg_rsp->_dataItemSeq;
  96                         log_debug("msg_rsp length: %ld\n", seq->length());
  97                         msg_rsp->printout();
  98                         response_listener_param->receive_response_dataitem_sequence(*seq);
  99                         delete(msg_req);
 100                         delete(msg_rsp);
 101                 }
 102                 else {
 103                         log_error("send_dataitem_message_and_request_response() error, server_callback == NULL\n");
 104                 }
 105         }
 106 }
 107
 108 CORBA::Long OrbServerImpl::send_dataitem_message_and_wait_response(const DataItemSequence& req_seq_param,
 109                                                                 DataItemSequence_out rsp_seq_param) {
 110         BusMessage              *msg_req;
 111         BusMessage              *msg_rsp;
 112         DataItemSequence        *seq;
 113         int                     err_flg;
 114
 115         seq     = NULL;
 116         msg_rsp = NULL;
 117         msg_req = new BusMessageInternal(req_seq_param);
 118         msg_rsp = new BusMessage(msg_req->get_type(&err_flg));
 119         _listener->request_received(msg_req, msg_rsp);
 120         if (msg_rsp != NULL) {
 121                 seq     = (DataItemSequence *)msg_rsp->_dataItemSeq;
 122         }
 123         else {
 124                 seq     = new DataItemSequence();
 125         }
 126         rsp_seq_param._data     = seq;
 127
 128         return 0;
 129 }
 130
 131 void OrbServerImpl::add_event_listener(OrbClient_ptr client_param,
 132                         const char *msg,
 133                         CORBA::UShort period_secs)
 134 {
 135         ServerEventThread       *srvr_thread;
 136
 137         if (CORBA::is_nil(client_param) == false) {
 138                 log_debug("add_event_listener()\n");
 139                 server_thread_mutex.lock();
 140                 _server_thread_count++;
 141                 server_thread_mutex.unlock();
 142                 srvr_thread     = new ServerEventThread(client_param, msg, period_secs, this);
 143                 srvr_thread->start();
 144         }
 145         else {
 146                 log_error("Failed to add event listener, listener NULL.\n");
 147         }
 148 }
 149
 150 void OrbServerImpl::shutdown()
 151 {
 152         omni_mutex_lock sync(server_thread_mutex);
 153         if (is_shutdown_pending() == 0) {
 154                 log_debug("shutdown request received!\n");
 155                 // Tell the servers to exit, and wait for them to do so.
 156                 _shutdown_pending       = 1;
 157                 while(_server_thread_count > 0) {
 158                         server_thread_shutdown_signal.timedwait(5, 0);
 159                         log_debug("signal received\n");
 160                 }
 161                 // Shutdown the ORB (but do not wait for completion).  This also
 162                 // causes the main thread to unblock from CORBA::ORB::run().
 163                 log_debug("calling orb shutdown\n");
 164                 _orb->shutdown(0);
 165                 log_debug("orb shutdown called\n");
 166         }
 167 }
 168
 169 int OrbServerImpl::init() {
 170         int     argc;
 171         char    **argv;
 172         int     retVal;
 173
 174         argc    = -1;
 175         argv    = NULL;
 176         retVal  = 0;
 177         _orb    = CORBA::ORB_init(argc, argv);
 178         if (_orb != NULL) {
 179                 _poa    = create_poa(_orb);
 180                 if (CORBA::is_nil(_poa) == false) {
 181                         retVal  = 0;
 182                         log_info("init success\n");
 183                 }
 184                 else {
 185                         log_info("init failed\n");
 186                 }
 187         }
 188         else {
 189                 log_error("init() failed\n");
 190         }
 191         return retVal;
 192 }
 193
 194 int OrbServerImpl::launch(const char *server_name)
 195 {
 196         CORBA::Object_var               server_ref;
 197         PortableServer::ObjectId_var    server_id;
 198         bool                            ok_flg;
 199         int                             ret_val;
 200         CosNaming::NamingContext_var    naming_context;
 201
 202         ret_val         = -1;
 203         POA_plpbus_orb::OrbServer_tie<OrbServerImpl> server_impl(this);
 204         server_id       = _poa->activate_object(&server_impl);
 205         server_ref      = server_impl._this();
 206         //this->_remove_ref();
 207         naming_context  = get_service_naming_context(CONST_CONTEXT_NAME__PLPBUS, CONST_CONTEXT_KIND__PLPBUS);
 208         if (naming_context != NULL) {
 209                 ok_flg  = bind_naming_context_and_service(naming_context,
 210                                                         server_ref,
 211                                                         server_name,
 212                                                         CONST_CONTEXT_KIND__PLPBUS);
 213                 if (ok_flg == true) {
 214                         log_debug("Registered to naming service: %s\n", server_name);
 215                         _orb->run();
 216                         ret_val = 0;
 217                 }
 218                 else {
 219                         log_error("Failed to register to naming service: %s\n", server_name);
 220                 }
 221         }
 222         return ret_val;
 223 }
 224
 225 PortableServer::POA_var OrbServerImpl::create_poa(CORBA::ORB_var orb) {
 226         PortableServer::POA_var         ret_val;
 227         CORBA::Object_var               poa_obj;
 228         CORBA::PolicyList               policy_list;
 229         CORBA::Any                      policyVal;
 230         PortableServer::POAManager_var  poa_man;
 231         PortableServer::POA_var         rootpoa;
 232
 233         ret_val = NULL;
 234         log_debug("started");
 235         poa_obj = orb->resolve_initial_references(CONST_ROOT_POA_NAME);
 236         if (poa_obj != NULL) {
 237                 log_debug("received initial reference to %s\n", CONST_ROOT_POA_NAME);
 238                 rootpoa = PortableServer::POA::_narrow(poa_obj);
 239                 if (rootpoa != NULL) {
 240                         poa_man = rootpoa->the_POAManager();
 241                         if (poa_man != NULL) {
 242                                 poa_man->activate();
 243                                 // bidirectional policy
 244                                 policy_list.length(1);
 245                                 policyVal       <<= BiDirPolicy::BOTH;
 246                                 policy_list[0] = orb->create_policy(BiDirPolicy::BIDIRECTIONAL_POLICY_TYPE, policyVal);
 247                                 ret_val         = rootpoa->create_POA(CONST_ROOT_POA_BIDIR_POLICY_NAME,
 248                                                         poa_man,
 249                                                         policy_list);
 250                                 if (CORBA::is_nil(ret_val) == false) {
 251                                         log_info("Created root poa %s\n", CONST_ROOT_POA_NAME);
 252                                 }
 253                                 else {
 254                                         log_error("Failed to create RootPOA %s\n", CONST_ROOT_POA_NAME);
 255                                 }
 256                         }
 257                         else {
 258                                 log_error("Failed to create RootPOA, could not  create POAManager for the root poa %s\n", CONST_ROOT_POA_NAME);
 259                         }
 260                 }
 261                 else {
 262                         log_error("Failed to create RootPOA, could not narrow root poa: %s\n", CONST_ROOT_POA_NAME);
 263                 }
 264         }
 265         else {
 266                 log_error("Failed to create RootPOA, could not resolve initial reference to %s.\n", CONST_ROOT_POA_NAME);
 267         }
 268         return ret_val;
 269 }
 270
 271 CosNaming::NamingContext_var OrbServerImpl::get_service_naming_context(const char *service_name_param,
 272                                                                 const char *service_kind_param)
 273 {
 274         CosNaming::NamingContext_var    ret_val;
 275         CosNaming::NamingContext_var    ns_context;
 276         CORBA::Object_var               ns_obj;
 277         CORBA::Object_var               service_obj;
 278         CosNaming::Name                 context_data;
 279
 280         ret_val = NULL;
 281         try {
 282                 // get nameservice reference
 283                 log_debug("get_service_naming_context() 1\n");
 284                 ns_obj  = _orb->resolve_initial_references(CONST_NAME_SERVICE_NAME);
 285                 if (CORBA::is_nil(ns_obj) == false) {
 286                         log_debug("get_service_naming_context() 2\n");
 287                         // get name service context
 288                         ns_context      = CosNaming::NamingContext::_narrow(ns_obj);
 289                         log_debug("get_service_naming_context() 3\n");
 290                         if (CORBA::is_nil(ns_context) == false) {
 291                                 context_data.length(1);
 292                                 context_data[0].id      = service_name_param;
 293                                 context_data[0].kind    = service_kind_param;
 294                                 log_debug("get_service_naming_context() 4\n");
 295                                 try {
 296                                         service_obj     = ns_context->resolve(context_data);
 297                                 }
 298                                 catch(CosNaming::NamingContext::NotFound& ex) {
 299                                         log_error("Failed to get context from name service for %s. Context does not yet exist, but will try to create.\n", service_name_param);
 300                                 }
 301                                 try {
 302                                         log_debug("get_service_naming_context() 5\n");
 303                                         if (CORBA::is_nil(service_obj)) {
 304                                                 // not found, try to bind the new context to name service
 305                                                 log_debug("get_service_naming_context() 6\n");
 306                                                 ret_val = ns_context->bind_new_context(context_data);
 307                                                 log_debug("get_service_naming_context() 7\n");
 308                                                 if (CORBA::is_nil(ret_val) ) {
 309                                                         log_error("Failed to create new context to name service for %s.\n", service_name_param);
 310                                                 }
 311                                         }
 312                                         else {
 313                                                 ret_val = CosNaming::NamingContext::_narrow(service_obj);
 314                                                 if (CORBA::is_nil(ret_val) ) {
 315                                                         log_error("Failed to get existing context from name service for %s, narrowing failed.\n", service_name_param);
 316                                                 }
 317                                         }
 318                                 }
 319                                 catch(CosNaming::NamingContext::AlreadyBound& ex) {
 320                                         log_error("Failed to get context from name service for %s. Context with same name already exist.\n", service_name_param);
 321                                 }
 322                         }
 323                 }
 324         }
 325         catch (CORBA::ORB::InvalidName&) {
 326                 // This should not happen!
 327                 log_error("Failed to get context from name service for %s, name service does not exist.\n", service_name_param);
 328         }
 329         catch(CORBA::TRANSIENT& ex) {
 330                 log_error("Failed to get context from name service for %s, verify that name service is running.\n", service_name_param);
 331         }
 332         catch (CORBA::NO_RESOURCES&) {
 333                 log_error("Failed to get context from name service for %s, Name service is not running or has configuration problem.\n", service_name_param);
 334                 log_error("Check-list:\n");
 335                 log_error("If you have OMNIORB_CONFIG environment variable defined, verify that omniORB.cfg file exist in that location.\n");
 336                 log_error("If you do not have OMNIORB_CONFIG environment variable defined, verify that you have /etc/omniORB.cfg file\n");
 337                 log_error("Verify that InitRef line is defined in omniORB.cfg file.\n");
 338         }
 339         catch(CORBA::SystemException& ex) {
 340                 log_error("Failed to get context from name service for %s, system error.\n", service_name_param);
 341         }
 342         log_debug("get_service_naming_context() done\n");
 343         return ret_val;
 344 }
 345
 346 bool OrbServerImpl::bind_naming_context_and_service(CosNaming::NamingContext_var service_context_param,
 347                                         CORBA::Object_ptr service_ref_param,
 348                                         const char *service_name_param,
 349                                         const char *service_kind_param)
 350 {
 351         bool            retVal;
 352         CosNaming::Name context_data;
 353
 354         retVal = false;
 355         try {
 356                 context_data.length(1);
 357                 context_data[0].id   = service_name_param;
 358                 context_data[0].kind = service_kind_param;
 359                 try {
 360                         service_context_param->bind(context_data, service_ref_param);
 361                         retVal  = true;
 362                 }
 363                 catch(CosNaming::NamingContext::AlreadyBound& ex) {
 364                         /**
 365                          * service existed already for the naming context with similar description.
 366                          * Replace the existing one with a new one.
 367                          */
 368                         log_warning("service %s exist, replacing it\n", service_name_param);
 369                         service_context_param->rebind(context_data, service_ref_param);
 370                         retVal  = true;
 371                 }
 372         }
 373         catch (CosNaming::NamingContext::InvalidName&) {
 374                 log_error("Could not register service to name server, invalid service name.\n");
 375         }
 376         catch (CosNaming::NamingContext::NotFound&) {
 377                 log_error("Could not register service to name server, service object reference is invalid.\n");
 378         }
 379         catch (CosNaming::NamingContext::CannotProceed&) {
 380                 // This should not happen!
 381                 log_error("Could not register service to name server, unknown error.\n");
 382         }
 383         catch(CORBA::SystemException& ex) {
 384                 log_error("Could not register service to name server, unknown error.\n");
 385         }
 386         return retVal;
 387 }
 388
 389 int OrbServerImpl::add_server_listener(IServerListener *listener_param)
 390 {
 391         int     retVal;
 392
 393         retVal          = 0;
 394         log_debug("started\n");
 395         _listener       = listener_param;
 396         return retVal;
 397 }
 398
 399 int OrbServerImpl::is_shutdown_pending() {
 400         return _shutdown_pending;
 401 }
 402
 403 void OrbServerImpl::server_thread_closed() {
 404         bool    send_signal;
 405
 406         log_debug("started\n");
 407         send_signal = false;
 408         server_thread_mutex.lock();
 409         log_debug("server_thread_count: %d\n", _server_thread_count);
 410         _server_thread_count--;
 411         if (_server_thread_count == 0) {
 412                 send_signal     = true;
 413         }
 414         server_thread_mutex.unlock();
 415         if (send_signal == true) {
 416                 log_debug("sending signal\n");
 417                 server_thread_shutdown_signal.signal();
 418                 log_debug("signal send\n");
 419         }
 420 }