int pgqtriga_make_sql(PgqTriggerEvent *ev, StringInfo sql)
{
TriggerData *tg = ev->tgdata;
TupleDesc tupdesc;
int i;
int attcnt;
int need_event = 1;
tupdesc = tg->tg_relation->rd_att;
/*
* Count number of active columns
*/
for (i = 0, attcnt = 0; i < tupdesc->natts; i++) {
if (tupdesc->attrs[i]->attisdropped)
continue;
attcnt++;
}
/*
* Determine cmdtype and op_data depending on the command type
*/
if (TRIGGER_FIRED_BY_INSERT(tg->tg_event)) {
process_insert(ev, sql);
} else if (TRIGGER_FIRED_BY_UPDATE(tg->tg_event)) {
need_event = process_update(ev, sql);
} else if (TRIGGER_FIRED_BY_DELETE(tg->tg_event)) {
process_delete(ev, sql);
} else
elog(ERROR, "logtriga fired for unhandled event");
return need_event;
}
//called on heap_write
static ssize_t heap_write(struct file *file, const char __user * in,
size_t size, loff_t * off){
//printk(KERN_INFO"heap write call\n");
struct heap * h = file->private_data;
if(size > _element_size)
return -EFBIG;
if (mutex_lock_interruptible(&h->lock))
return -ERESTARTSYS;
if(h->cur_size == h->max_size)
heap_pop(h);
if (copy_from_user(h->data[h->cur_size],in, size))
return - EFAULT;
process_insert(h);
mutex_unlock(&h->lock);
//printk(KERN_INFO"heap write done ok %i\n",h->cur_size);
return size;
}
