1 #include "osrf_app_session.h"
4 /* the global app_session cache */
5 osrfHash* osrfAppSessionCache = NULL;
8 // --------------------------------------------------------------------------
9 // --------------------------------------------------------------------------
11 // --------------------------------------------------------------------------
13 /** Allocation and initializes a new app_request object */
14 osrf_app_request* _osrf_app_request_init(
15 osrf_app_session* session, osrf_message* msg ) {
17 osrf_app_request* req =
18 (osrf_app_request*) safe_malloc(sizeof(osrf_app_request));
20 req->session = session;
21 req->request_id = msg->thread_trace;
31 void osrfAppSessionCleanup() {
32 osrfHashFree(osrfAppSessionCache);
37 /** Frees memory used by an app_request object */
38 void _osrf_app_request_free( void * req ){
39 if( req == NULL ) return;
40 osrfAppRequest* r = (osrfAppRequest*) req;
41 if( r->payload ) osrf_message_free( r->payload );
45 /** Pushes the given message onto the list of 'responses' to this request */
46 void _osrf_app_request_push_queue( osrf_app_request* req, osrf_message* result ){
47 if(req == NULL || result == NULL) return;
48 osrfLogDebug( OSRF_LOG_MARK, "App Session pushing request [%d] onto request queue", result->thread_trace );
49 if(req->result == NULL) {
54 osrf_message* ptr = req->result;
55 osrf_message* ptr2 = req->result->next;
64 /** Removes this app_request from our session request set */
65 void osrf_app_session_request_finish(
66 osrf_app_session* session, int req_id ){
68 if(session == NULL) return;
69 osrf_app_request* req = OSRF_LIST_GET_INDEX( session->request_queue, req_id );
70 if(req == NULL) return;
71 osrfListRemove( req->session->request_queue, req->request_id );
75 void osrf_app_session_request_reset_timeout( osrf_app_session* session, int req_id ) {
76 if(session == NULL) return;
77 osrfLogDebug( OSRF_LOG_MARK, "Resetting request timeout %d", req_id );
78 osrf_app_request* req = OSRF_LIST_GET_INDEX( session->request_queue, req_id );
79 if(req == NULL) return;
80 req->reset_timeout = 1;
83 /** Checks the receive queue for messages. If any are found, the first
84 * is popped off and returned. Otherwise, this method will wait at most timeout
85 * seconds for a message to appear in the receive queue. Once it arrives it is returned.
86 * If no messages arrive in the timeout provided, null is returned.
88 osrf_message* _osrf_app_request_recv( osrf_app_request* req, int timeout ) {
90 if(req == NULL) return NULL;
92 if( req->result != NULL ) {
93 /* pop off the first message in the list */
94 osrf_message* tmp_msg = req->result;
95 req->result = req->result->next;
99 time_t start = time(NULL);
100 time_t remaining = (time_t) timeout;
102 while( remaining >= 0 ) {
103 /* tell the session to wait for stuff */
104 osrfLogDebug( OSRF_LOG_MARK, "In app_request receive with remaining time [%d]", (int) remaining );
106 osrf_app_session_queue_wait( req->session, 0, NULL );
108 if( req->result != NULL ) { /* if we received anything */
109 /* pop off the first message in the list */
110 osrfLogDebug( OSRF_LOG_MARK, "app_request_recv received a message, returning it");
111 osrf_message* ret_msg = req->result;
112 osrf_message* tmp_msg = ret_msg->next;
113 req->result = tmp_msg;
120 osrf_app_session_queue_wait( req->session, (int) remaining, NULL );
122 if( req->result != NULL ) { /* if we received anything */
123 /* pop off the first message in the list */
124 osrfLogDebug( OSRF_LOG_MARK, "app_request_recv received a message, returning it");
125 osrf_message* ret_msg = req->result;
126 osrf_message* tmp_msg = ret_msg->next;
127 req->result = tmp_msg;
133 if(req->reset_timeout) {
134 remaining = (time_t) timeout;
135 req->reset_timeout = 0;
136 osrfLogDebug( OSRF_LOG_MARK, "Recevied a timeout reset");
138 remaining -= (int) (time(NULL) - start);
142 osrfLogInfo( OSRF_LOG_MARK, "Returning NULL from app_request_recv after timeout");
146 /** Resend this requests original request message */
147 int _osrf_app_request_resend( osrf_app_request* req ) {
148 if(req == NULL) return 0;
150 osrfLogDebug( OSRF_LOG_MARK, "Resending request [%d]", req->request_id );
151 return _osrf_app_session_send( req->session, req->payload );
158 // --------------------------------------------------------------------------
159 // --------------------------------------------------------------------------
161 // --------------------------------------------------------------------------
163 /** returns a session from the global session hash */
164 osrf_app_session* osrf_app_session_find_session( char* session_id ) {
165 if(session_id) return osrfHashGet(osrfAppSessionCache, session_id);
170 /** adds a session to the global session cache */
171 void _osrf_app_session_push_session( osrf_app_session* session ) {
173 if( osrfAppSessionCache == NULL ) osrfAppSessionCache = osrfNewHash();
174 if( osrfHashGet( osrfAppSessionCache, session->session_id ) ) return;
175 osrfHashSet( osrfAppSessionCache, session, session->session_id );
178 /** Allocates a initializes a new app_session */
180 osrf_app_session* osrfAppSessionClientInit( char* remote_service ) {
181 return osrf_app_client_session_init( remote_service );
184 osrf_app_session* osrf_app_client_session_init( char* remote_service ) {
186 osrf_app_session* session = safe_malloc(sizeof(osrf_app_session));
188 session->transport_handle = osrf_system_get_transport_client();
189 if( session->transport_handle == NULL ) {
190 osrfLogWarning( OSRF_LOG_MARK, "No transport client for service 'client'");
194 char target_buf[512];
195 memset(target_buf,0,512);
197 osrfStringArray* arr = osrfNewStringArray(8);
198 osrfConfigGetValueList(NULL, arr, "/domains/domain");
199 char* domain = osrfStringArrayGetString(arr, 0);
200 char* router_name = osrfConfigGetValue(NULL, "/router_name");
202 sprintf( target_buf, "%s@%s/%s", router_name, domain, remote_service );
203 osrfStringArrayFree(arr);
207 session->request_queue = osrfNewList();
208 session->request_queue->freeItem = &_osrf_app_request_free;
209 session->remote_id = strdup(target_buf);
210 session->orig_remote_id = strdup(session->remote_id);
211 session->remote_service = strdup(remote_service);
213 #ifdef ASSUME_STATELESS
214 session->stateless = 1;
215 osrfLogDebug( OSRF_LOG_MARK, "%s session is stateless", remote_service );
217 session->stateless = 0;
218 osrfLogDebug( OSRF_LOG_MARK, "%s session is NOT stateless", remote_service );
221 /* build a chunky, random session id */
225 sprintf(id, "%lf.%d%d", get_timestamp_millis(), (int)time(NULL), getpid());
226 session->session_id = strdup(id);
227 osrfLogDebug( OSRF_LOG_MARK, "Building a new client session with id [%s] [%s]",
228 session->remote_service, session->session_id );
230 session->thread_trace = 0;
231 session->state = OSRF_SESSION_DISCONNECTED;
232 session->type = OSRF_SESSION_CLIENT;
233 //session->next = NULL;
234 _osrf_app_session_push_session( session );
238 osrf_app_session* osrf_app_server_session_init(
239 char* session_id, char* our_app, char* remote_id ) {
241 osrfLogDebug( OSRF_LOG_MARK, "Initing server session with session id %s, service %s,"
242 " and remote_id %s", session_id, our_app, remote_id );
244 osrf_app_session* session = osrf_app_session_find_session( session_id );
245 if(session) return session;
247 session = safe_malloc(sizeof(osrf_app_session));
249 session->transport_handle = osrf_system_get_transport_client();
250 if( session->transport_handle == NULL ) {
251 osrfLogWarning( OSRF_LOG_MARK, "No transport client for service '%s'", our_app );
256 char* statel = osrf_settings_host_value("/apps/%s/stateless", our_app );
257 if(statel) stateless = atoi(statel);
261 session->request_queue = osrfNewList();
262 session->request_queue->freeItem = &_osrf_app_request_free;
263 session->remote_id = strdup(remote_id);
264 session->orig_remote_id = strdup(remote_id);
265 session->session_id = strdup(session_id);
266 session->remote_service = strdup(our_app);
267 session->stateless = stateless;
269 #ifdef ASSUME_STATELESS
270 session->stateless = 1;
273 session->thread_trace = 0;
274 session->state = OSRF_SESSION_DISCONNECTED;
275 session->type = OSRF_SESSION_SERVER;
277 _osrf_app_session_push_session( session );
284 /** frees memory held by a session */
285 void _osrf_app_session_free( osrf_app_session* session ){
289 if( session->userDataFree && session->userData )
290 session->userDataFree(session->userData);
292 free(session->remote_id);
293 free(session->orig_remote_id);
294 free(session->session_id);
295 free(session->remote_service);
296 osrfListFree(session->request_queue);
300 int osrfAppSessionMakeRequest(
301 osrf_app_session* session, jsonObject* params,
302 char* method_name, int protocol, string_array* param_strings ) {
304 return osrf_app_session_make_req( session, params,
305 method_name, protocol, param_strings );
308 int osrf_app_session_make_req(
309 osrf_app_session* session, jsonObject* params,
310 char* method_name, int protocol, string_array* param_strings ) {
311 if(session == NULL) return -1;
315 osrf_message* req_msg = osrf_message_init( REQUEST, ++(session->thread_trace), protocol );
316 osrf_message_set_method(req_msg, method_name);
318 osrf_message_set_params(req_msg, params);
324 for(i = 0; i!= param_strings->size ; i++ ) {
325 osrf_message_add_param(req_msg,
326 string_array_get_string(param_strings,i));
331 osrf_app_request* req = _osrf_app_request_init( session, req_msg );
332 if(_osrf_app_session_send( session, req_msg ) ) {
333 osrfLogWarning( OSRF_LOG_MARK, "Error sending request message [%d]", session->thread_trace );
337 osrfLogDebug( OSRF_LOG_MARK, "Pushing [%d] onto requeust queue for session [%s] [%s]",
338 req->request_id, session->remote_service, session->session_id );
339 osrfListSet( session->request_queue, req, req->request_id );
340 return req->request_id;
343 void osrf_app_session_set_complete( osrf_app_session* session, int request_id ) {
347 osrf_app_request* req = OSRF_LIST_GET_INDEX( session->request_queue, request_id );
348 if(req) req->complete = 1;
351 int osrf_app_session_request_complete( osrf_app_session* session, int request_id ) {
354 osrf_app_request* req = OSRF_LIST_GET_INDEX( session->request_queue, request_id );
356 return req->complete;
361 /** Resets the remote connection id to that of the original*/
362 void osrf_app_session_reset_remote( osrf_app_session* session ){
366 free(session->remote_id);
367 osrfLogDebug( OSRF_LOG_MARK, "App Session [%s] [%s] resetting remote id to %s",
368 session->remote_service, session->session_id, session->orig_remote_id );
370 session->remote_id = strdup(session->orig_remote_id);
373 void osrf_app_session_set_remote( osrf_app_session* session, char* remote_id ) {
376 if( session->remote_id )
377 free(session->remote_id );
378 session->remote_id = strdup( remote_id );
381 /** pushes the given message into the result list of the app_request
382 with the given request_id */
383 int osrf_app_session_push_queue(
384 osrf_app_session* session, osrf_message* msg ){
385 if(session == NULL || msg == NULL) return 0;
387 osrf_app_request* req = OSRF_LIST_GET_INDEX( session->request_queue, msg->thread_trace );
388 if(req == NULL) return 0;
389 _osrf_app_request_push_queue( req, msg );
394 int osrfAppSessionConnect( osrf_app_session* session ) {
395 return osrf_app_session_connect(session);
399 /** Attempts to connect to the remote service */
400 int osrf_app_session_connect(osrf_app_session* session){
405 if(session->state == OSRF_SESSION_CONNECTED) {
409 int timeout = 5; /* XXX CONFIG VALUE */
411 osrfLogDebug( OSRF_LOG_MARK, "AppSession connecting to %s", session->remote_id );
413 /* defaulting to protocol 1 for now */
414 osrf_message* con_msg = osrf_message_init( CONNECT, session->thread_trace, 1 );
415 osrf_app_session_reset_remote( session );
416 session->state = OSRF_SESSION_CONNECTING;
417 int ret = _osrf_app_session_send( session, con_msg );
418 osrf_message_free(con_msg);
421 time_t start = time(NULL);
422 time_t remaining = (time_t) timeout;
424 while( session->state != OSRF_SESSION_CONNECTED && remaining >= 0 ) {
425 osrf_app_session_queue_wait( session, remaining, NULL );
426 remaining -= (int) (time(NULL) - start);
429 if(session->state == OSRF_SESSION_CONNECTED)
430 osrfLogDebug( OSRF_LOG_MARK, " * Connected Successfully to %s", session->remote_service );
432 if(session->state != OSRF_SESSION_CONNECTED)
440 /** Disconnects from the remote service */
441 int osrf_app_session_disconnect( osrf_app_session* session){
445 if(session->state == OSRF_SESSION_DISCONNECTED)
448 if(session->stateless && session->state != OSRF_SESSION_CONNECTED) {
449 osrfLogDebug( OSRF_LOG_MARK,
450 "Exiting disconnect on stateless session %s",
451 session->session_id);
455 osrfLogDebug(OSRF_LOG_MARK, "AppSession disconnecting from %s", session->remote_id );
457 osrf_message* dis_msg = osrf_message_init( DISCONNECT, session->thread_trace, 1 );
458 _osrf_app_session_send( session, dis_msg );
459 session->state = OSRF_SESSION_DISCONNECTED;
461 osrf_message_free( dis_msg );
462 osrf_app_session_reset_remote( session );
466 int osrf_app_session_request_resend( osrf_app_session* session, int req_id ) {
467 osrf_app_request* req = OSRF_LIST_GET_INDEX( session->request_queue, req_id );
468 return _osrf_app_request_resend( req );
472 int osrfAppSessionSendBatch( osrfAppSession* session, osrf_message* msgs[], int size ) {
474 if( !(session && msgs && size > 0) ) return 0;
477 osrfMessage* msg = msgs[0];
481 osrf_app_session_queue_wait( session, 0, NULL );
483 if(session->state != OSRF_SESSION_CONNECTED) {
485 if(session->stateless) { /* stateless session always send to the root listener */
486 osrf_app_session_reset_remote(session);
490 /* do an auto-connect if necessary */
491 if( ! session->stateless &&
492 (msg->m_type != CONNECT) &&
493 (msg->m_type != DISCONNECT) &&
494 (session->state != OSRF_SESSION_CONNECTED) ) {
496 if(!osrf_app_session_connect( session ))
503 char* string = osrfMessageSerializeBatch(msgs, size);
507 transport_message* t_msg = message_init(
508 string, "", session->session_id, session->remote_id, NULL );
509 message_set_osrf_xid( t_msg, osrfLogGetXid() );
511 retval = client_send_message( session->transport_handle, t_msg );
513 if( retval ) osrfLogError(OSRF_LOG_MARK, "client_send_message failed");
515 osrfLogInfo(OSRF_LOG_MARK, "[%s] sent %d bytes of data to %s",
516 session->remote_service, strlen(string), t_msg->recipient );
518 osrfLogDebug(OSRF_LOG_MARK, "Sent: %s", string );
521 message_free( t_msg );
529 int _osrf_app_session_send( osrf_app_session* session, osrf_message* msg ){
530 if( !(session && msg) ) return 0;
533 return osrfAppSessionSendBatch( session, a, 1 );
539 /** Waits up to 'timeout' seconds for some data to arrive.
540 * Any data that arrives will be processed according to its
541 * payload and message type. This method will return after
542 * any data has arrived.
544 int osrf_app_session_queue_wait( osrf_app_session* session, int timeout, int* recvd ){
545 if(session == NULL) return 0;
547 osrfLogDebug(OSRF_LOG_MARK, "AppSession in queue_wait with timeout %d", timeout );
548 ret_val = osrf_stack_entry_point(session->transport_handle, timeout, recvd);
552 /** Disconnects (if client) and removes the given session from the global session cache
553 * ! This free's all attached app_requests !
555 void osrfAppSessionFree( osrfAppSession* ses ) {
556 osrf_app_session_destroy( ses );
560 void osrf_app_session_destroy( osrf_app_session* session ){
561 if(session == NULL) return;
563 osrfLogDebug(OSRF_LOG_MARK, "AppSession [%s] [%s] destroying self and deleting requests",
564 session->remote_service, session->session_id );
565 if(session->type == OSRF_SESSION_CLIENT
566 && session->state != OSRF_SESSION_DISCONNECTED ) { /* disconnect if we're a client */
567 osrf_message* dis_msg = osrf_message_init( DISCONNECT, session->thread_trace, 1 );
568 _osrf_app_session_send( session, dis_msg );
569 osrf_message_free(dis_msg);
572 osrfHashRemove( osrfAppSessionCache, session->session_id );
573 _osrf_app_session_free( session );
576 osrf_message* osrfAppSessionRequestRecv(
577 osrf_app_session* session, int req_id, int timeout ) {
578 return osrf_app_session_request_recv( session, req_id, timeout );
580 osrf_message* osrf_app_session_request_recv(
581 osrf_app_session* session, int req_id, int timeout ) {
582 if(req_id < 0 || session == NULL)
584 osrf_app_request* req = OSRF_LIST_GET_INDEX( session->request_queue, req_id );
585 return _osrf_app_request_recv( req, timeout );
590 int osrfAppRequestRespond( osrfAppSession* ses, int requestId, jsonObject* data ) {
591 if(!ses || ! data ) return -1;
593 osrf_message* msg = osrf_message_init( RESULT, requestId, 1 );
594 char* json = jsonObjectToJSON( data );
596 osrf_message_set_result_content( msg, json );
597 _osrf_app_session_send( ses, msg );
600 osrf_message_free( msg );
606 int osrfAppRequestRespondComplete(
607 osrfAppSession* ses, int requestId, jsonObject* data ) {
609 osrf_message* payload = osrf_message_init( RESULT, requestId, 1 );
610 osrf_message_set_status_info( payload, NULL, "OK", OSRF_STATUS_OK );
612 osrf_message* status = osrf_message_init( STATUS, requestId, 1);
613 osrf_message_set_status_info( status, "osrfConnectStatus", "Request Complete", OSRF_STATUS_COMPLETE );
616 char* json = jsonObjectToJSON( data );
617 osrf_message_set_result_content( payload, json );
624 osrfAppSessionSendBatch( ses, ms, 2 );
626 osrf_message_free( payload );
628 osrfAppSessionSendBatch( ses, &status, 1 );
631 osrf_message_free( status );
636 int osrfAppSessionStatus( osrfAppSession* ses, int type, char* name, int reqId, char* message ) {
639 osrf_message* msg = osrf_message_init( STATUS, reqId, 1);
640 osrf_message_set_status_info( msg, name, message, type );
641 _osrf_app_session_send( ses, msg );
642 osrf_message_free( msg );