src/libopensrf/transport_client.c

   1 #include <opensrf/transport_client.h>
   2
   3
   4 //int main( int argc, char** argv );
   5
   6 /*
   7 int main( int argc, char** argv ) {
   8
   9         transport_message* recv;
  10         transport_message* send;
  11
  12         transport_client* client = client_init( "spacely.georgialibraries.org", 5222 );
  13
  14         // try to connect, allow 15 second connect timeout
  15         if( client_connect( client, "admin", "asdfjkjk", "system", 15 ) ) {
  16                 printf("Connected...\n");
  17         } else {
  18                 printf( "NOT Connected...\n" ); exit(99);
  19         }
  20
  21         while( (recv = client_recv( client, -1 )) ) {
  22
  23                 if( recv->body ) {
  24                         int len = strlen(recv->body);
  25                         char buf[len + 20];
  26                         memset( buf, 0, len + 20);
  27                         sprintf( buf, "Echoing...%s", recv->body );
  28                         send = message_init( buf, "Echoing Stuff", "12345", recv->sender, "" );
  29                 } else {
  30                         send = message_init( " * ECHOING * ", "Echoing Stuff", "12345", recv->sender, "" );
  31                 }
  32
  33                 if( send == NULL ) { printf("something's wrong"); }
  34                 client_send_message( client, send );
  35
  36                 message_free( send );
  37                 message_free( recv );
  38         }
  39
  40         printf( "ended recv loop\n" );
  41
  42         return 0;
  43
  44 }
  45 */
  46
  47
  48 transport_client* client_init( const char* server, int port, const char* unix_path, int component ) {
  49
  50         if(server == NULL) return NULL;
  51
  52         /* build and clear the client object */
  53         size_t c_size = sizeof( transport_client);
  54         transport_client* client = safe_malloc( c_size );
  55
  56         /* build and clear the message list */
  57         size_t l_size = sizeof( transport_message_list );
  58         client->m_list = safe_malloc( l_size );
  59
  60         client->m_list->next = NULL;
  61         client->m_list->message = NULL;
  62         client->m_list->type = MESSAGE_LIST_HEAD;
  63
  64         /* build the session */
  65
  66         client->session = init_transport( server, port, unix_path, client, component );
  67
  68         client->session->message_callback = client_message_handler;
  69         client->error = 0;
  70
  71         return client;
  72 }
  73
  74
  75 int client_connect( transport_client* client,
  76                 char* username, char* password, char* resource,
  77                 int connect_timeout, enum TRANSPORT_AUTH_TYPE  auth_type ) {
  78         if(client == NULL) return 0;
  79         return session_connect( client->session, username,
  80                         password, resource, connect_timeout, auth_type );
  81 }
  82
  83
  84 int client_disconnect( transport_client* client ) {
  85         if( client == NULL ) { return 0; }
  86         return session_disconnect( client->session );
  87 }
  88
  89 int client_connected( transport_client* client ) {
  90         if(client == NULL) return 0;
  91         return client->session->state_machine->connected;
  92 }
  93
  94 int client_send_message( transport_client* client, transport_message* msg ) {
  95         if(client == NULL) return 0;
  96         if( client->error ) return -1;
  97         return session_send_msg( client->session, msg );
  98 }
  99
 100
 101 transport_message* client_recv( transport_client* client, int timeout ) {
 102         if( client == NULL ) { return NULL; }
 103
 104         transport_message_node* node;
 105         transport_message* msg;
 106
 107
 108         /* see if there are any message in the messages queue */
 109         if( client->m_list->next != NULL ) {
 110                 /* pop off the first one... */
 111                 node = client->m_list->next;
 112                 client->m_list->next = node->next;
 113                 msg = node->message;
 114                 free( node );
 115                 return msg;
 116         }
 117
 118         if( timeout == -1 ) {  /* wait potentially forever for data to arrive */
 119
 120                 while( client->m_list->next == NULL ) {
 121                 //      if( ! session_wait( client->session, -1 ) ) {
 122                         int x;
 123                         if( (x = session_wait( client->session, -1 )) ) {
 124                                 osrfLogDebug(OSRF_LOG_MARK, "session_wait returned failure code %d\n", x);
 125                                 client->error = 1;
 126                                 return NULL;
 127                         }
 128                 }
 129
 130         } else { /* wait at most timeout seconds */
 131
 132
 133                 /* if not, loop up to 'timeout' seconds waiting for data to arrive */
 134                 time_t start = time(NULL);
 135                 time_t remaining = (time_t) timeout;
 136
 137                 int counter = 0;
 138
 139                 int wait_ret;
 140                 while( client->m_list->next == NULL && remaining >= 0 ) {
 141
 142                         if( (wait_ret= session_wait( client->session, remaining)) ) {
 143                                 client->error = 1;
 144                                 osrfLogDebug(OSRF_LOG_MARK, "session_wait returned failure code %d: setting error=1\n", wait_ret);
 145                                 return NULL;
 146                         }
 147
 148                         ++counter;
 149
 150 #ifdef _ROUTER
 151                         // session_wait returns -1 if there is no more data and we're a router
 152                         if( remaining == 0 ) { // && wait_ret == -1 ) {
 153                                 break;
 154                         }
 155 #else
 156                         if( remaining == 0 ) // or infinite loop
 157                                 break;
 158 #endif
 159
 160                         remaining -= (int) (time(NULL) - start);
 161                 }
 162
 163         }
 164
 165         /* again, see if there are any messages in the message queue */
 166         if( client->m_list->next != NULL ) {
 167                 /* pop off the first one... */
 168                 node = client->m_list->next;
 169                 client->m_list->next = node->next;
 170                 msg = node->message;
 171                 free( node );
 172                 return msg;
 173
 174         } else {
 175                 return NULL;
 176         }
 177 }
 178
 179 /* throw the message into the message queue */
 180 void client_message_handler( void* client, transport_message* msg ){
 181
 182         if(client == NULL) return;
 183         if(msg == NULL) return;
 184
 185         transport_client* cli = (transport_client*) client;
 186
 187         size_t len = sizeof(transport_message_node);
 188         transport_message_node* node =
 189                 (transport_message_node*) safe_malloc(len);
 190         node->type = MESSAGE_LIST_ITEM;
 191         node->message = msg;
 192
 193
 194         /* find the last node and put this onto the end */
 195         transport_message_node* tail = cli->m_list;
 196         transport_message_node* current = tail->next;
 197
 198         while( current != NULL ) {
 199                 tail = current;
 200                 current = current->next;
 201         }
 202         tail->next = node;
 203 }
 204
 205
 206 int client_free( transport_client* client ){
 207         if(client == NULL) return 0;
 208
 209         session_free( client->session );
 210         transport_message_node* current = client->m_list->next;
 211         transport_message_node* next;
 212
 213         /* deallocate the list of messages */
 214         while( current != NULL ) {
 215                 next = current->next;
 216                 message_free( current->message );
 217                 free(current);
 218                 current = next;
 219         }
 220
 221         free( client->m_list );
 222         free( client );
 223         return 1;
 224 }
 225