OpenSRF/src/libstack/osrf_stack.c

   1 #include "opensrf/osrf_stack.h"
   2
   3 osrf_message* _do_client( osrf_app_session*, osrf_message* );
   4 osrf_message* _do_server( osrf_app_session*, osrf_message* );
   5
   6 int osrf_stack_process( transport_client* client, int timeout ) {
   7         transport_message* msg = client_recv( client, timeout );
   8         if(msg == NULL) return 0;
   9         return osrf_stack_transport_handler( msg );
  10 }
  11
  12
  13
  14 // -----------------------------------------------------------------------------
  15 // Entry point into the stack
  16 // -----------------------------------------------------------------------------
  17 int osrf_stack_transport_handler( transport_message* msg ) {
  18
  19         debug_handler( "Transport handler received new message \nfrom %s "
  20                         "to %s with body \n\n%s\n", msg->sender, msg->recipient, msg->body );
  21
  22         osrf_app_session* session = osrf_app_session_find_session( msg->thread );
  23
  24         if( session == NULL ) {  /* we must be a server, build a new session */
  25                 info_handler( "Server sessions not implemented yet ..." );
  26                 return 0;
  27         }
  28
  29         debug_handler("Session [%s] found, building message", msg->thread );
  30
  31         osrf_app_session_set_remote( session, msg->sender );
  32         osrf_message* arr[OSRF_MAX_MSGS_PER_PACKET];
  33         memset(arr, 0, OSRF_MAX_MSGS_PER_PACKET );
  34         int num_msgs = osrf_message_from_xml( msg->body, arr );
  35
  36         debug_handler( "We received %d messages from %s", num_msgs, msg->sender );
  37
  38         /* XXX ERROR CHECKING, BAD XML, ETC... */
  39         int i;
  40         for( i = 0; i != num_msgs; i++ ) {
  41                 osrf_stack_message_handler( session, arr[i] );
  42         }
  43
  44         message_free( msg );
  45
  46         return 1;
  47 }
  48
  49 int osrf_stack_message_handler( osrf_app_session* session, osrf_message* msg ) {
  50         if(session == NULL || msg == NULL)
  51                 return 0;
  52
  53         osrf_message* ret_msg = NULL;
  54         if( session->type ==  OSRF_SESSION_CLIENT )
  55                  ret_msg = _do_client( session, msg );
  56         else
  57                 ret_msg= _do_server( session, msg );
  58
  59         if(ret_msg)
  60                 osrf_stack_application_handler( session, ret_msg );
  61
  62         return 1;
  63
  64 }
  65
  66 /** If we return a message, that message should be passed up the stack,
  67   * if we return NULL, we're finished for now...
  68   */
  69 osrf_message* _do_client( osrf_app_session* session, osrf_message* msg ) {
  70         if(session == NULL || msg == NULL)
  71                 return NULL;
  72
  73         osrf_message* new_msg;
  74
  75         if( msg->m_type == STATUS ) {
  76
  77                 switch( msg->status_code ) {
  78
  79                         case OSRF_STATUS_OK:
  80                                 session->state = OSRF_SESSION_CONNECTED;
  81                                 return NULL;
  82
  83                         case OSRF_STATUS_COMPLETE:
  84                                 osrf_app_session_set_complete( session, msg->thread_trace );
  85                                 return NULL;
  86
  87                         case OSRF_STATUS_REDIRECTED:
  88                                 osrf_app_session_reset_remote( session );
  89                                 session->state = OSRF_SESSION_DISCONNECTED;
  90                                 osrf_app_session_request_resend( session, msg->thread_trace );
  91                                 return NULL;
  92
  93                         case OSRF_STATUS_EXPFAILED:
  94                                 osrf_app_session_reset_remote( session );
  95                                 session->state = OSRF_SESSION_DISCONNECTED;
  96                                 osrf_app_session_request_resend( session, msg->thread_trace );
  97                                 return NULL;
  98
  99                         case OSRF_STATUS_TIMEOUT:
 100                                 osrf_app_session_reset_remote( session );
 101                                 session->state = OSRF_SESSION_DISCONNECTED;
 102                                 osrf_app_session_request_resend( session, msg->thread_trace );
 103                                 return NULL;
 104
 105
 106                         default:
 107                                 new_msg = osrf_message_init( RESULT, msg->thread_trace, msg->protocol );
 108                                 osrf_message_set_status_info( new_msg,
 109                                                 msg->status_name, msg->status_text, msg->status_code );
 110                                 warning_handler("The stack doesn't know what to do with "
 111                                                 "the provided message code: %d, name %s. Passing UP.",
 112                                                 msg->status_code, msg->status_name );
 113                                 new_msg->is_exception = 1;
 114                                 osrf_app_session_set_complete( session, msg->thread_trace );
 115                                 osrf_message_free(msg);
 116                                 return new_msg;
 117                 }
 118
 119                 return NULL;
 120
 121         } else if( msg->m_type == RESULT )
 122                 return msg;
 123
 124         return NULL;
 125
 126 }
 127
 128
 129 /** If we return a message, that message should be passed up the stack,
 130   * if we return NULL, we're finished for now...
 131   */
 132 osrf_message* _do_server( osrf_app_session* session, osrf_message* msg ) {
 133         if(session == NULL || msg == NULL)
 134                 return NULL;
 135
 136         warning_handler( "We dont' do servers yet !!" );
 137
 138         return msg;
 139 }
 140
 141
 142
 143
 144 int osrf_stack_application_handler( osrf_app_session* session, osrf_message* msg ) {
 145         if(session == NULL || msg == NULL)
 146                 return 0;
 147
 148         if(msg->m_type == RESULT) {
 149                 osrf_app_session_push_queue( session, msg );
 150                 return 1;
 151         }
 152
 153         warning_handler( "application_handler can't handle whatever you sent, type %d", msg->m_type);
 154
 155         return 1;
 156
 157 }