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;
30 /** Frees memory used by an app_request object */
31 void _osrf_app_request_free( void * req ){
32 if( req == NULL ) return;
33 osrfAppRequest* r = (osrfAppRequest*) req;
35 if( r->payload ) osrf_message_free( r->payload );
38 osrf_message* cur_msg = req->result;
39 while( cur_msg != NULL ) {
40 osrf_message* next_msg = cur_msg->next;
41 osrf_message_free( cur_msg );
44 osrf_message_free( req->payload );
50 /** Pushes the given message onto the list of 'responses' to this request */
51 void _osrf_app_request_push_queue( osrf_app_request* req, osrf_message* result ){
52 if(req == NULL || result == NULL) return;
53 osrfLogDebug( OSRF_LOG_MARK, "App Session pushing request [%d] onto request queue", result->thread_trace );
54 if(req->result == NULL)
57 result->next = req->result;
62 /** Removes this app_request from our session request set */
63 void osrf_app_session_request_finish(
64 osrf_app_session* session, int req_id ){
66 if(session == NULL) return;
67 osrf_app_request* req = osrfListGetIndex( session->request_queue, req_id );
68 if(req == NULL) return;
69 osrfListRemove( req->session->request_queue, req->request_id );
73 void osrf_app_session_request_reset_timeout( osrf_app_session* session, int req_id ) {
74 if(session == NULL) return;
75 osrfLogDebug( OSRF_LOG_MARK, "Resetting request timeout %d", req_id );
76 osrf_app_request* req = osrfListGetIndex( session->request_queue, req_id );
77 if(req == NULL) return;
78 req->reset_timeout = 1;
81 /** Checks the receive queue for messages. If any are found, the first
82 * is popped off and returned. Otherwise, this method will wait at most timeout
83 * seconds for a message to appear in the receive queue. Once it arrives it is returned.
84 * If no messages arrive in the timeout provided, null is returned.
86 osrf_message* _osrf_app_request_recv( osrf_app_request* req, int timeout ) {
88 if(req == NULL) return NULL;
90 if( req->result != NULL ) {
91 /* pop off the first message in the list */
92 osrf_message* tmp_msg = req->result;
93 req->result = req->result->next;
97 time_t start = time(NULL);
98 time_t remaining = (time_t) timeout;
100 while( remaining >= 0 ) {
101 /* tell the session to wait for stuff */
102 osrfLogDebug( OSRF_LOG_MARK, "In app_request receive with remaining time [%d]", (int) remaining );
104 osrf_app_session_queue_wait( req->session, 0 );
106 if( req->result != NULL ) { /* if we received anything */
107 /* pop off the first message in the list */
108 osrfLogDebug( OSRF_LOG_MARK, "app_request_recv received a message, returning it");
109 osrf_message* ret_msg = req->result;
110 osrf_message* tmp_msg = ret_msg->next;
111 req->result = tmp_msg;
118 osrf_app_session_queue_wait( req->session, (int) remaining );
120 if( req->result != NULL ) { /* if we received anything */
121 /* pop off the first message in the list */
122 osrfLogDebug( OSRF_LOG_MARK, "app_request_recv received a message, returning it");
123 osrf_message* ret_msg = req->result;
124 osrf_message* tmp_msg = ret_msg->next;
125 req->result = tmp_msg;
131 if(req->reset_timeout) {
132 remaining = (time_t) timeout;
133 req->reset_timeout = 0;
134 osrfLogDebug( OSRF_LOG_MARK, "Recevied a timeout reset");
136 remaining -= (int) (time(NULL) - start);
140 osrfLogDebug( OSRF_LOG_MARK, "Returning NULL from app_request_recv after timeout");
144 /** Resend this requests original request message */
145 int _osrf_app_request_resend( osrf_app_request* req ) {
146 if(req == NULL) return 0;
148 osrfLogDebug( OSRF_LOG_MARK, "Resending request [%d]", req->request_id );
149 return _osrf_app_session_send( req->session, req->payload );
156 // --------------------------------------------------------------------------
157 // --------------------------------------------------------------------------
159 // --------------------------------------------------------------------------
161 /** returns a session from the global session hash */
162 osrf_app_session* osrf_app_session_find_session( char* session_id ) {
163 if(session_id) return osrfHashGet(osrfAppSessionCache, session_id);
168 /** adds a session to the global session cache */
169 void _osrf_app_session_push_session( osrf_app_session* session ) {
171 if( osrfAppSessionCache == NULL ) osrfAppSessionCache = osrfNewHash();
172 if( osrfHashGet( osrfAppSessionCache, session->session_id ) ) return;
173 osrfHashSet( osrfAppSessionCache, session, session->session_id );
176 /** Allocates a initializes a new app_session */
178 osrf_app_session* osrfAppSessionClientInit( char* remote_service ) {
179 return osrf_app_client_session_init( remote_service );
182 osrf_app_session* osrf_app_client_session_init( char* remote_service ) {
184 osrf_app_session* session = safe_malloc(sizeof(osrf_app_session));
186 session->transport_handle = osrf_system_get_transport_client();
187 if( session->transport_handle == NULL ) {
188 osrfLogWarning( OSRF_LOG_MARK, "No transport client for service 'client'");
192 char target_buf[512];
193 memset(target_buf,0,512);
195 osrfStringArray* arr = osrfNewStringArray(8);
196 osrfConfigGetValueList(NULL, arr, "/domains/domain");
197 char* domain = osrfStringArrayGetString(arr, 0);
198 char* router_name = osrfConfigGetValue(NULL, "/router_name");
200 sprintf( target_buf, "%s@%s/%s", router_name, domain, remote_service );
201 osrfStringArrayFree(arr);
205 session->request_queue = osrfNewList();
206 session->request_queue->freeItem = &_osrf_app_request_free;
207 session->remote_id = strdup(target_buf);
208 session->orig_remote_id = strdup(session->remote_id);
209 session->remote_service = strdup(remote_service);
211 #ifdef ASSUME_STATELESS
212 session->stateless = 1;
213 osrfLogDebug( OSRF_LOG_MARK, "%s session is stateless", remote_service );
215 session->stateless = 0;
216 osrfLogDebug( OSRF_LOG_MARK, "%s session is NOT stateless", remote_service );
219 /* build a chunky, random session id */
223 sprintf(id, "%lf.%d%d", get_timestamp_millis(), (int)time(NULL), getpid());
224 session->session_id = strdup(id);
225 osrfLogDebug( OSRF_LOG_MARK, "Building a new client session with id [%s] [%s]",
226 session->remote_service, session->session_id );
228 session->thread_trace = 0;
229 session->state = OSRF_SESSION_DISCONNECTED;
230 session->type = OSRF_SESSION_CLIENT;
231 //session->next = NULL;
232 _osrf_app_session_push_session( session );
236 osrf_app_session* osrf_app_server_session_init(
237 char* session_id, char* our_app, char* remote_id ) {
239 osrfLogInfo( OSRF_LOG_MARK, "Initing server session with session id %s, service %s,"
240 " and remote_id %s", session_id, our_app, remote_id );
242 osrf_app_session* session = osrf_app_session_find_session( session_id );
243 if(session) return session;
245 session = safe_malloc(sizeof(osrf_app_session));
247 session->transport_handle = osrf_system_get_transport_client();
248 if( session->transport_handle == NULL ) {
249 osrfLogWarning( OSRF_LOG_MARK, "No transport client for service '%s'", our_app );
254 char* statel = osrf_settings_host_value("/apps/%s/stateless", our_app );
255 if(statel) stateless = atoi(statel);
259 session->request_queue = osrfNewList();
260 session->request_queue->freeItem = &_osrf_app_request_free;
261 session->remote_id = strdup(remote_id);
262 session->orig_remote_id = strdup(remote_id);
263 session->session_id = strdup(session_id);
264 session->remote_service = strdup(our_app);
265 session->stateless = stateless;
267 #ifdef ASSUME_STATELESS
268 session->stateless = 1;
271 session->thread_trace = 0;
272 session->state = OSRF_SESSION_DISCONNECTED;
273 session->type = OSRF_SESSION_SERVER;
275 _osrf_app_session_push_session( session );
282 /** frees memory held by a session */
283 void _osrf_app_session_free( osrf_app_session* session ){
287 free(session->remote_id);
288 free(session->orig_remote_id);
289 free(session->session_id);
290 free(session->remote_service);
291 osrfListFree(session->request_queue);
295 int osrfAppSessionMakeRequest(
296 osrf_app_session* session, jsonObject* params,
297 char* method_name, int protocol, string_array* param_strings ) {
299 return osrf_app_session_make_req( session, params,
300 method_name, protocol, param_strings );
303 int osrf_app_session_make_req(
304 osrf_app_session* session, jsonObject* params,
305 char* method_name, int protocol, string_array* param_strings ) {
306 if(session == NULL) return -1;
308 osrf_message* req_msg = osrf_message_init( REQUEST, ++(session->thread_trace), protocol );
309 osrf_message_set_method(req_msg, method_name);
311 osrf_message_set_params(req_msg, params);
317 for(i = 0; i!= param_strings->size ; i++ ) {
318 osrf_message_add_param(req_msg,
319 string_array_get_string(param_strings,i));
324 osrf_app_request* req = _osrf_app_request_init( session, req_msg );
325 if(_osrf_app_session_send( session, req_msg ) ) {
326 osrfLogWarning( OSRF_LOG_MARK, "Error sending request message [%d]", session->thread_trace );
330 osrfLogDebug( OSRF_LOG_MARK, "Pushing [%d] onto requeust queue for session [%s] [%s]",
331 req->request_id, session->remote_service, session->session_id );
332 osrfListSet( session->request_queue, req, req->request_id );
333 return req->request_id;
336 void osrf_app_session_set_complete( osrf_app_session* session, int request_id ) {
340 osrf_app_request* req = osrfListGetIndex( session->request_queue, request_id );
341 if(req) req->complete = 1;
344 int osrf_app_session_request_complete( osrf_app_session* session, int request_id ) {
347 osrf_app_request* req = osrfListGetIndex( session->request_queue, request_id );
349 return req->complete;
354 /** Resets the remote connection id to that of the original*/
355 void osrf_app_session_reset_remote( osrf_app_session* session ){
359 free(session->remote_id);
360 osrfLogDebug( OSRF_LOG_MARK, "App Session [%s] [%s] resetting remote id to %s",
361 session->remote_service, session->session_id, session->orig_remote_id );
363 session->remote_id = strdup(session->orig_remote_id);
366 void osrf_app_session_set_remote( osrf_app_session* session, char* remote_id ) {
369 if( session->remote_id )
370 free(session->remote_id );
371 session->remote_id = strdup( remote_id );
374 /** pushes the given message into the result list of the app_request
375 with the given request_id */
376 int osrf_app_session_push_queue(
377 osrf_app_session* session, osrf_message* msg ){
378 if(session == NULL || msg == NULL) return 0;
380 osrf_app_request* req = osrfListGetIndex( session->request_queue, msg->thread_trace );
381 if(req == NULL) return 0;
382 _osrf_app_request_push_queue( req, msg );
387 /** Attempts to connect to the remote service */
388 int osrf_app_session_connect(osrf_app_session* session){
393 if(session->state == OSRF_SESSION_CONNECTED) {
397 int timeout = 5; /* XXX CONFIG VALUE */
399 osrfLogDebug( OSRF_LOG_MARK, "AppSession connecting to %s", session->remote_id );
401 /* defaulting to protocol 1 for now */
402 osrf_message* con_msg = osrf_message_init( CONNECT, session->thread_trace, 1 );
403 osrf_app_session_reset_remote( session );
404 session->state = OSRF_SESSION_CONNECTING;
405 int ret = _osrf_app_session_send( session, con_msg );
406 osrf_message_free(con_msg);
409 time_t start = time(NULL);
410 time_t remaining = (time_t) timeout;
412 while( session->state != OSRF_SESSION_CONNECTED && remaining >= 0 ) {
413 osrf_app_session_queue_wait( session, remaining );
414 remaining -= (int) (time(NULL) - start);
417 if(session->state == OSRF_SESSION_CONNECTED)
418 osrfLogDebug( OSRF_LOG_MARK, " * Connected Successfully to %s", session->remote_service );
420 if(session->state != OSRF_SESSION_CONNECTED)
428 /** Disconnects from the remote service */
429 int osrf_app_session_disconnect( osrf_app_session* session){
433 if(session->state == OSRF_SESSION_DISCONNECTED)
436 if(session->stateless && session->state != OSRF_SESSION_CONNECTED) {
437 osrfLogDebug( OSRF_LOG_MARK,
438 "Exiting disconnect on stateless session %s",
439 session->session_id);
443 osrfLogDebug(OSRF_LOG_MARK, "AppSession disconnecting from %s", session->remote_id );
445 osrf_message* dis_msg = osrf_message_init( DISCONNECT, session->thread_trace, 1 );
446 session->state = OSRF_SESSION_DISCONNECTED;
447 _osrf_app_session_send( session, dis_msg );
449 osrf_message_free( dis_msg );
450 osrf_app_session_reset_remote( session );
454 int osrf_app_session_request_resend( osrf_app_session* session, int req_id ) {
455 osrf_app_request* req = osrfListGetIndex( session->request_queue, req_id );
456 return _osrf_app_request_resend( req );
460 int osrfAppSessionSendBatch( osrfAppSession* session, osrf_message* msgs[], int size ) {
462 if( !(session && msgs && size > 0) ) return 0;
466 osrfMessage* msg = msgs[0];
470 osrf_app_session_queue_wait( session, 0 );
472 /* if we're not stateless and not connected and the first
473 message is not a connect message, then we do the connect first */
474 if(session->stateless) {
475 osrf_app_session_reset_remote(session);
479 if( (msg->m_type != CONNECT) && (msg->m_type != DISCONNECT) &&
480 (session->state != OSRF_SESSION_CONNECTED) ) {
481 if(!osrf_app_session_connect( session ))
487 char* string = osrfMessageSerializeBatch(msgs, size);
491 transport_message* t_msg = message_init(
492 string, "", session->session_id, session->remote_id, NULL );
494 osrfLogDebug(OSRF_LOG_MARK, "Session [%s] [%s] sending to %s \nData: %s",
495 session->remote_service, session->session_id, t_msg->recipient, string );
497 retval = client_send_message( session->transport_handle, t_msg );
500 message_free( t_msg );
509 int _osrf_app_session_send( osrf_app_session* session, osrf_message* msg ){
510 if( !(session && msg) ) return 0;
513 return osrfAppSessionSendBatch( session, a, 1 );
519 /** Waits up to 'timeout' seconds for some data to arrive.
520 * Any data that arrives will be processed according to its
521 * payload and message type. This method will return after
522 * any data has arrived.
524 int osrf_app_session_queue_wait( osrf_app_session* session, int timeout ){
525 if(session == NULL) return 0;
527 osrfLogDebug(OSRF_LOG_MARK, "AppSession in queue_wait with timeout %d", timeout );
528 ret_val = osrf_stack_entry_point(session->transport_handle, timeout);
532 /** Disconnects (if client) and removes the given session from the global session cache
533 * ! This free's all attached app_requests !
535 void osrfAppSessionFree( osrfAppSession* ses ) {
536 osrf_app_session_destroy( ses );
540 void osrf_app_session_destroy( osrf_app_session* session ){
541 if(session == NULL) return;
543 osrfLogDebug(OSRF_LOG_MARK, "AppSession [%s] [%s] destroying self and deleting requests",
544 session->remote_service, session->session_id );
545 if(session->type == OSRF_SESSION_CLIENT
546 && session->state != OSRF_SESSION_DISCONNECTED ) { /* disconnect if we're a client */
547 osrf_message* dis_msg = osrf_message_init( DISCONNECT, session->thread_trace, 1 );
548 _osrf_app_session_send( session, dis_msg );
549 osrf_message_free(dis_msg);
552 osrfHashRemove( osrfAppSessionCache, session->session_id );
553 _osrf_app_session_free( session );
556 osrf_message* osrfAppSessionRequestRecv(
557 osrf_app_session* session, int req_id, int timeout ) {
558 return osrf_app_session_request_recv( session, req_id, timeout );
560 osrf_message* osrf_app_session_request_recv(
561 osrf_app_session* session, int req_id, int timeout ) {
562 if(req_id < 0 || session == NULL)
564 osrf_app_request* req = osrfListGetIndex( session->request_queue, req_id );
565 return _osrf_app_request_recv( req, timeout );
570 int osrfAppRequestRespond( osrfAppSession* ses, int requestId, jsonObject* data ) {
571 if(!ses || ! data ) return -1;
573 osrf_message* msg = osrf_message_init( RESULT, requestId, 1 );
574 char* json = jsonObjectToJSON( data );
575 osrf_message_set_result_content( msg, json );
576 _osrf_app_session_send( ses, msg );
579 osrf_message_free( msg );
585 int osrfAppRequestRespondComplete(
586 osrfAppSession* ses, int requestId, jsonObject* data ) {
588 osrf_message* payload = osrf_message_init( RESULT, requestId, 1 );
589 osrf_message_set_status_info( payload, NULL, "OK", OSRF_STATUS_OK );
591 char* json = jsonObjectToJSON( data );
592 osrf_message_set_result_content( payload, json );
595 osrf_message* status = osrf_message_init( STATUS, requestId, 1);
596 osrf_message_set_status_info( status, "osrfConnectStatus", "Request Complete", OSRF_STATUS_COMPLETE );
602 osrfAppSessionSendBatch( ses, ms, 2 );
604 osrf_message_free( payload );
605 osrf_message_free( status );
612 int osrfAppSessionStatus( osrfAppSession* ses, int type, char* name, int reqId, char* message ) {
615 osrf_message* msg = osrf_message_init( STATUS, reqId, 1);
616 osrf_message_set_status_info( msg, name, message, type );
617 _osrf_app_session_send( ses, msg );
618 osrf_message_free( msg );