C++ (Cpp) spool_add_subscriber Examples

Example #1

File: spool.c Project: tidatida/nchan

static ngx_int_t spooler_add_subscriber(channel_spooler_t *self, subscriber_t *sub) {
  nchan_msg_id_t          *msgid = &sub->last_msg_id;
  subscriber_pool_t       *spool;
  
  if(self->want_to_stop) {
    ERR("Not accepting new subscribers right now. want to stop.");
    return NGX_ERROR;
  }
  
  spool = get_spool(self, msgid);
  
  assert(spool->id.time == msgid->time);
  
  if(spool == NULL) {
    return NGX_ERROR;
  }

  if(spool_add_subscriber(spool, sub, 1) != NGX_OK) {
    ERR("couldn't add subscriber to spool %p", spool);
    return NGX_ERROR;
  }
  
  if(self->add_handler != NULL) {
    self->add_handler(self, sub, self->add_handler_privdata);
  }
  else {
    ERR("SPOOLER %p has no add_handler, couldn't add subscriber %p", self, sub);
  }
  
  switch(spool->msg_status) {
    case MSG_FOUND:
      assert(spool->msg);
      spool_respond_general(spool, spool->msg, 0, NULL);
      break;
    
    case MSG_INVALID:
      assert(spool->msg == NULL);
      spool_fetch_msg(spool);
      break;
    
    case MSG_CHANNEL_NOTREADY:
    case MSG_PENDING:
    case MSG_EXPECTED:
      //nothing to do but wait
      break;
      
    case MSG_EXPIRED:
    case MSG_NOTFOUND:
      //shouldn't happen
      assert(0);
  }

  return NGX_OK;
}

Example #2

File: spool.c Project: tidatida/nchan

static ngx_int_t spool_transfer_subscribers(subscriber_pool_t *spool, subscriber_pool_t *newspool, uint8_t update_subscriber_last_msgid) {
  ngx_int_t               count = 0;
  subscriber_t           *sub;
  spooled_subscriber_t   *cur;
  
  assert(spool->spooler == newspool->spooler);
  
  if(spool == NULL || newspool == NULL) {
    ERR("failed to transfer spool subscribers");
    return 0;
  }
  for(cur = spool->first; cur != NULL; cur = spool->first) {
    sub = cur->sub;
    spool_remove_subscriber(spool, cur);
    if(update_subscriber_last_msgid) {
      sub->last_msg_id=newspool->id;
    }
    spool_add_subscriber(newspool, sub, 0);
    count++;
  }
  
  return count;
}

Example #3

File: spool.c Project: valydvweb/nchan

static ngx_int_t spooler_add_subscriber(channel_spooler_t *self, subscriber_t *sub) {
  nchan_msg_id_t          *msgid = &sub->last_msgid;
  subscriber_pool_t       *spool;
  subscriber_type_t        subtype;
  
  if(self->want_to_stop) {
    ERR("Not accepting new subscribers right now. want to stop.");
    return NGX_ERROR;
  }
  
  //validate_spooler(self, "before add_subscriber");
  
  spool = get_spool(self, msgid);
  
  assert(spool->id.time == msgid->time);
  
  
  if(spool == NULL) {
    return NGX_ERROR;
  }

  subtype = sub->type;
  
  if(spool_add_subscriber(spool, sub, 1) != NGX_OK) {
    ERR("couldn't add subscriber to spool %p", spool);
    return NGX_ERROR;
  }
  self->handlers->add(self, sub, self->handlers_privdata);
  
  switch(spool->msg_status) {
    case MSG_FOUND:
      assert(spool->msg);
      spool_respond_general(spool, spool->msg, 0, NULL, 0);
      break;
    
    case MSG_INVALID:
      assert(spool->msg == NULL);
      spool_fetch_msg(spool);
      break;
    
    case MSG_CHANNEL_NOTREADY:
    case MSG_PENDING:
      //nothing to do
      break;
      
    case MSG_EXPECTED:
      //notify subscriber
      sub->fn->respond_status(sub, NGX_HTTP_NO_CONTENT, NULL);
      break;
      
    case MSG_EXPIRED:
    case MSG_NOTFOUND:
    case MSG_NORESPONSE:
      //shouldn't happen
      assert(0);
  }
  
  if(self->handlers->bulk_post_subscribe != NULL && subtype != INTERNAL) {
    self->handlers->bulk_post_subscribe(self, 1, self->handlers_privdata);
  }
  
  //validate_spooler(self, "after add_subscriber");
  
  return NGX_OK;
}