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         else
  62                 osrf_message_free(msg);
  63
  64         return 1;
  65
  66 }
  67
  68 /** If we return a message, that message should be passed up the stack,
  69   * if we return NULL, we're finished for now...
  70   */
  71 osrf_message* _do_client( osrf_app_session* session, osrf_message* msg ) {
  72         if(session == NULL || msg == NULL)
  73                 return NULL;
  74
  75         osrf_message* new_msg;
  76
  77         if( msg->m_type == STATUS ) {
  78
  79                 switch( msg->status_code ) {
  80
  81                         case OSRF_STATUS_OK:
  82                                 session->state = OSRF_SESSION_CONNECTED;
  83                                 return NULL;
  84
  85                         case OSRF_STATUS_COMPLETE:
  86                                 osrf_app_session_set_complete( session, msg->thread_trace );
  87                                 return NULL;
  88
  89                         case OSRF_STATUS_REDIRECTED:
  90                                 osrf_app_session_reset_remote( session );
  91                                 session->state = OSRF_SESSION_DISCONNECTED;
  92                                 osrf_app_session_request_resend( session, msg->thread_trace );
  93                                 return NULL;
  94
  95                         case OSRF_STATUS_EXPFAILED:
  96                                 osrf_app_session_reset_remote( session );
  97                                 session->state = OSRF_SESSION_DISCONNECTED;
  98                                 osrf_app_session_request_resend( session, msg->thread_trace );
  99                                 return NULL;
 100
 101                         case OSRF_STATUS_TIMEOUT:
 102                                 osrf_app_session_reset_remote( session );
 103                                 session->state = OSRF_SESSION_DISCONNECTED;
 104                                 osrf_app_session_request_resend( session, msg->thread_trace );
 105                                 return NULL;
 106
 107
 108                         default:
 109                                 new_msg = osrf_message_init( RESULT, msg->thread_trace, msg->protocol );
 110                                 osrf_message_set_status_info( new_msg,
 111                                                 msg->status_name, msg->status_text, msg->status_code );
 112                                 warning_handler("The stack doesn't know what to do with "
 113                                                 "the provided message code: %d, name %s. Passing UP.",
 114                                                 msg->status_code, msg->status_name );
 115                                 new_msg->is_exception = 1;
 116                                 osrf_app_session_set_complete( session, msg->thread_trace );
 117                                 osrf_message_free(msg);
 118                                 return new_msg;
 119                 }
 120
 121                 return NULL;
 122
 123         } else if( msg->m_type == RESULT )
 124                 return msg;
 125
 126         return NULL;
 127
 128 }
 129
 130
 131 /** If we return a message, that message should be passed up the stack,
 132   * if we return NULL, we're finished for now...
 133   */
 134 osrf_message* _do_server( osrf_app_session* session, osrf_message* msg ) {
 135         if(session == NULL || msg == NULL)
 136                 return NULL;
 137
 138         warning_handler( "We dont' do servers yet !!" );
 139
 140         return msg;
 141 }
 142
 143
 144
 145
 146 int osrf_stack_application_handler( osrf_app_session* session, osrf_message* msg ) {
 147         if(session == NULL || msg == NULL)
 148                 return 0;
 149
 150         if(msg->m_type == RESULT) {
 151                 osrf_app_session_push_queue( session, msg );
 152                 return 1;
 153         }
 154
 155         warning_handler( "application_handler can't handle whatever you sent, type %d", msg->m_type);
 156
 157         return 1;
 158
 159 }