fwp/lib/mngt/fwp_mngt.c

   1 #include "fwp_conf.h"
   2 #include "fwp_mngt.h"
   3 #include "fwp_endpoint.h"
   4
   5 /**
   6  * Global mngt variables
   7  */
   8
   9 /**< Pointer to participant of this application*/
  10 fwp_participant_t       *fwp_participant_this;
  11 /**< Pointer to manager participant record*/
  12 fwp_participant_t       *fwp_participant_mngr;
  13
  14 static fwp_contract_t fwp_service_contract = {
  15         .budget = 100,
  16         .period_usec = 30,
  17 };
  18
  19 static fwp_vres_params_t fwp_service_vres_params = {
  20         .id = 0,
  21         .ac_id = FWP_AC_BK,
  22         .budget = 100,
  23         .period_usec = 30,
  24 };
  25
  26 /**
  27  * Send management message to participant
  28  *
  29  */
  30 int fwp_mngt_send(fwp_msg_type_t type,fwp_msgb_t *msgb,
  31                   fwp_participant_t *source, fwp_participant_t *dest)
  32 {
  33         fwp_msgb_push(msgb, sizeof(struct fwp_msg_header));
  34         fwp_msg_header_in(msgb->data, type, source->id);
  35
  36         fwp_send(dest->epointd, msgb->data, msgb->len, 0);
  37
  38         return 0;
  39 }
  40
  41 /**
  42  * Receives management message from participant
  43  *
  44  */
  45 int fwp_mngt_recv(fwp_msg_type_t *type, fwp_participant_id_t *participant_id,
  46                         fwp_msgb_t *msgb)
  47 {
  48         int size;
  49
  50         fwp_msgb_reset_data(msgb);
  51         size = fwp_recv(fwp_participant_this->epointd, msgb->data,
  52                         msgb->buffer_size, 0);
  53         fwp_msgb_put(msgb, size);
  54
  55         fwp_msg_header_out(msgb->data, type, participant_id);
  56         fwp_msgb_pull(msgb, sizeof(struct fwp_msg_header));
  57
  58         FWP_DEBUG("Received msg: type=%d  from nodeid=%d appid=%d\n", *type,
  59                         participant_id->node_id, participant_id->app_id);
  60
  61         return 0;
  62 }
  63
  64 int fwp_mngt_service_vres_create(fwp_vres_d_t* vresdp)
  65 {
  66         fwp_contract_d_t        contractd;
  67         fwp_contract_data_t*    contdata;
  68
  69         //contractd = fwp_contract_create(&fwp_service_contract);
  70         if ((fwp_vres_create(&fwp_service_vres_params, vresdp) < 0)) {
  71                 fprintf(stderr,"Unable to open service vres\n");
  72                 return -1;
  73         }
  74         //contdata = contractd;
  75
  76         /* TODO: Consider to call _fwp_contract_commit */
  77         //contdata->status = FWP_CONT_NEGOTIATED;
  78         /* Set parameters of vres
  79          * and activate it if needed */
  80         //fwp_vres_set_params(contdata->vresd, &fwp_service_vres_params);
  81         //*vresdp = contdata->vresd;
  82
  83         FWP_DEBUG("Service vres negotiated\n");
  84         return 0;
  85 }
  86
  87 /**
  88  * Launches discovery/connect process to
  89  * introduce itself to fwp manager and get description of manager
  90  * */
  91 int fwp_mngt_connect()
  92 {
  93         fwp_participant_info_t  my_info, mngr_info;
  94         fwp_participant_id_t    participant_id;
  95         fwp_msgb_t              *msgb;
  96         fwp_msg_type_t          msg_type;
  97         fwp_endpoint_attr_t     attr;
  98
  99         fwp_endpoint_attr_init(&attr);
 100         fwp_endpoint_attr_setreliability(&attr, FWP_MNGT_RELIABILITY);
 101
 102         /* Create discovery endpoint */
 103         FWP_DEBUG("Service vres created\n");
 104         fwp_mngt_service_vres_create(&fwp_participant_mngr->vresd);
 105
 106         FWP_DEBUG("Discovery send endpoint created\n");
 107         fwp_send_endpoint_create(fwp_participant_mngr->id.node_id,
 108                                  fwp_participant_mngr->stream_id,
 109                                  &attr, &fwp_participant_mngr->epointd);
 110         fwp_send_endpoint_bind(fwp_participant_mngr->epointd,
 111                                 fwp_participant_mngr->vresd);
 112
 113         /* prepare hello message */
 114         msgb = fwp_msgb_alloc(sizeof(struct fwp_msg_header) +
 115                               sizeof(struct fwp_msg_hello));
 116         fwp_msgb_reserve(msgb, sizeof(struct fwp_msg_header));
 117
 118         my_info.id = fwp_participant_this->id;
 119         my_info.stream_id = fwp_participant_this->stream_id;
 120
 121         fwp_msg_hello_in(msgb->tail, &my_info);
 122         fwp_msgb_put(msgb, sizeof(struct fwp_msg_hello));
 123
 124         /* Send hello to manager */
 125         fwp_mngt_send(FWP_MSG_HELLO, msgb,
 126                         fwp_participant_this, fwp_participant_mngr);
 127
 128         /* receive hello from manager */
 129         fwp_mngt_recv(&msg_type, &participant_id, msgb);
 130         FWP_DEBUG("Received HELLO msg from nodeid= %d appid= %d\n",
 131                         participant_id.node_id, participant_id.app_id);
 132
 133         /* Process hello msg from manager */
 134         fwp_msg_hello_out(msgb->data, &mngr_info);
 135         fwp_participant_mngr->id  = mngr_info.id;
 136         fwp_participant_mngr->stream_id  = mngr_info.stream_id;
 137         FWP_DEBUG("Received HELLO msg contains nodeid= %d appid= %d\n",
 138                         mngr_info.id.node_id, mngr_info.id.app_id);
 139
 140         /* unbind and delete discovery mngr send endpoint */
 141         fwp_send_endpoint_unbind(fwp_participant_mngr->epointd);
 142         fwp_endpoint_destroy(fwp_participant_mngr->epointd);
 143
 144         /* Create mngt send endpoint to manager */
 145         fwp_send_endpoint_create(fwp_participant_mngr->id.node_id,
 146                                  fwp_participant_mngr->stream_id, &attr,
 147                                  &fwp_participant_mngr->epointd);
 148         FWP_DEBUG("Management send endpoint created\n");
 149         fwp_send_endpoint_bind(fwp_participant_mngr->epointd,
 150                                 fwp_participant_mngr->vresd);
 151         return 0;
 152 }
 153
 154 int fwp_mngt_disconnect()
 155 {
 156         fwp_msgb_t *msgb;
 157
 158         msgb = fwp_msgb_alloc(sizeof(struct fwp_msg_header) +
 159                                 sizeof(struct fwp_msg_contracthdr));
 160         fwp_msgb_reserve(msgb, sizeof(struct fwp_msg_header));
 161
 162         /* Say GoodBye to manager */
 163         fwp_mngt_send(FWP_MSG_BYE, msgb,
 164                         fwp_participant_this, fwp_participant_mngr);
 165
 166         /* TODO: iterate through contract table and delete contracts */
 167         return 0;
 168 }
 169
 170
 171 int fwp_mngt_init()
 172 {
 173         fwp_participant_info_t  my_info, mngr_info;
 174         unsigned int node_id;
 175         fwp_endpoint_attr_t attr;
 176         char *value;
 177
 178         fwp_endpoint_attr_init(&attr);
 179         fwp_endpoint_attr_setreliability(&attr, FWP_MNGT_RELIABILITY);
 180
 181         /* Create fwp_participant_this */
 182         my_info.id.node_id = inet_addr(fwp_configuration.my_addr);
 183         if (my_info.id.node_id == inet_addr(FWP_MY_ADDR_DEFAULT)) {
 184                 /* if default then check env variable */
 185                 value = getenv("FWP_MY_ADDR");
 186                 if (value) {
 187                         my_info.id.node_id = inet_addr(value);
 188                 }
 189         }
 190         fwp_configuration.my_node_id = my_info.id.node_id;
 191         my_info.id.app_id = getpid();
 192         my_info.stream_id = fwp_configuration.my_stream_id;
 193
 194         fwp_participant_this = fwp_participant_create(&my_info);
 195         fwp_receive_endpoint_create(my_info.stream_id, &attr,
 196                                         &fwp_participant_this->epointd);
 197         /* FIXME
 198         fwp_endpoint_get_params(&(fwp_participant_this->id.node_id),
 199                                 &fwp_participant_this->stream_id,
 200                                 &flags,
 201                                 fwp_participant_this->epointd);
 202         */
 203         fwp_endpoint_get_params(fwp_participant_this->epointd,
 204                                 &node_id,
 205                                 &fwp_participant_this->stream_id,
 206                                 &attr);
 207         FWP_DEBUG("Participant_this created node_id id= %d stream id= %d\n",
 208                         fwp_participant_this->id.node_id,
 209                         fwp_participant_this->stream_id);
 210
 211         /* Create fwp_participant_mngr */
 212
 213         mngr_info.id.node_id = inet_addr(fwp_configuration.mngr_addr);
 214         FWP_DEBUG("mngr node=%s node_id=%d\n",
 215                         fwp_configuration.mngr_addr,
 216                         mngr_info.id.node_id);
 217         if (mngr_info.id.node_id == inet_addr(FWP_MNGR_ADDR_DEFAULT)) {
 218                 /* if default then check env variable */
 219                 value = getenv("FWP_MNGR_ADDR");
 220                 if (value) {
 221                         mngr_info.id.node_id = inet_addr(value);
 222                 }
 223         }
 224         fwp_configuration.mngr_node_id = mngr_info.id.node_id;
 225         mngr_info.id.app_id = getpid();
 226         mngr_info.stream_id = fwp_configuration.mngr_stream_id;
 227
 228         if ((mngr_info.id.node_id == inet_addr("127.0.0.1")) &&
 229                 (my_info.stream_id == mngr_info.stream_id)) {
 230                 /* I am a manager  */
 231                 FWP_DEBUG("I am FWP manager\n");
 232                 fwp_participant_mngr = fwp_participant_this;
 233         } else {
 234                 fwp_participant_mngr = fwp_participant_create(&mngr_info);
 235                 /* Connet to FWP manager */
 236                 fwp_mngt_connect();
 237         }
 238
 239         return 0;
 240 }