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         return 1;
  45 }
  46
  47 int osrf_stack_message_handler( osrf_app_session* session, osrf_message* msg ) {
  48         if(session == NULL || msg == NULL)
  49                 return 0;
  50
  51         osrf_message* ret_msg = NULL;
  52         if( session->type ==  OSRF_SESSION_CLIENT )
  53                  ret_msg = _do_client( session, msg );
  54         else
  55                 ret_msg= _do_server( session, msg );
  56
  57         if(ret_msg)
  58                 osrf_stack_application_handler( session, ret_msg );
  59
  60         return 1;
  61
  62 }
  63
  64 /** If we return a message, that message should be passed up the stack,
  65   * if we return NULL, we're finished for now...
  66   */
  67 osrf_message* _do_client( osrf_app_session* session, osrf_message* msg ) {
  68         if(session == NULL || msg == NULL)
  69                 return NULL;
  70
  71         osrf_message* new_msg;
  72
  73         if( msg->m_type == STATUS ) {
  74
  75                 switch( msg->status_code ) {
  76
  77                         case OSRF_STATUS_OK:
  78                                 session->state = OSRF_SESSION_CONNECTED;
  79                                 return NULL;
  80
  81                         case OSRF_STATUS_COMPLETE:
  82                                 osrf_app_session_set_complete( session, msg->thread_trace );
  83                                 return NULL;
  84
  85                         case OSRF_STATUS_REDIRECTED:
  86                                 osrf_app_session_reset_remote( session );
  87                                 session->state = OSRF_SESSION_DISCONNECTED;
  88                                 osrf_app_session_request_resend( session, msg->thread_trace );
  89                                 return NULL;
  90
  91                         case OSRF_STATUS_EXPFAILED:
  92                                 osrf_app_session_reset_remote( session );
  93                                 session->state = OSRF_SESSION_DISCONNECTED;
  94                                 osrf_app_session_request_resend( session, msg->thread_trace );
  95                                 return NULL;
  96
  97                         case OSRF_STATUS_TIMEOUT:
  98                                 osrf_app_session_reset_remote( session );
  99                                 session->state = OSRF_SESSION_DISCONNECTED;
 100                                 osrf_app_session_request_resend( session, msg->thread_trace );
 101                                 return NULL;
 102
 103
 104                         default:
 105                                 new_msg = osrf_message_init( RESULT, msg->thread_trace, msg->protocol );
 106                                 osrf_message_set_status_info( new_msg,
 107                                                 msg->status_name, msg->status_text, msg->status_code );
 108                                 warning_handler("The stack doesn't know what to do with "
 109                                                 "the provided message code: %d, name %s. Passing UP.",
 110                                                 msg->status_code, msg->status_name );
 111                                 new_msg->is_exception = 1;
 112                                 osrf_app_session_set_complete( session, msg->thread_trace );
 113                                 osrf_message_free(msg);
 114                                 return new_msg;
 115                 }
 116
 117                 return NULL;
 118
 119         } else if( msg->m_type == RESULT )
 120                 return msg;
 121
 122         return NULL;
 123
 124 }
 125
 126
 127 /** If we return a message, that message should be passed up the stack,
 128   * if we return NULL, we're finished for now...
 129   */
 130 osrf_message* _do_server( osrf_app_session* session, osrf_message* msg ) {
 131         if(session == NULL || msg == NULL)
 132                 return NULL;
 133
 134         warning_handler( "We dont' do servers yet !!" );
 135
 136         return msg;
 137 }
 138
 139
 140
 141
 142 int osrf_stack_application_handler( osrf_app_session* session, osrf_message* msg ) {
 143         if(session == NULL || msg == NULL)
 144                 return 0;
 145
 146         if(msg->m_type == RESULT) {
 147                 osrf_app_session_push_queue( session, msg );
 148                 return 1;
 149         }
 150
 151         warning_handler( "application_handler can't handle whatever you sent, type %d", msg->m_type);
 152
 153         return 1;
 154
 155 }