static POOL_CONNECTION_POOL *new_connection(POOL_CONNECTION_POOL *p)
{
/* create master connection */
MASTER_CONNECTION(p) = malloc(sizeof(POOL_CONNECTION_POOL_SLOT));
if (MASTER_CONNECTION(p) == NULL)
{
pool_error("pool_create_cp: malloc() failed");
return NULL;
}
create_cp(MASTER_CONNECTION(p), 0);
/* initialize Paramter Status save structure */
if (pool_init_params(&MASTER(p)->params))
{
return NULL;
}
p->num = 1; /* number of slots */
/* create secondary connection */
if (DUAL_MODE)
{
SECONDARY_CONNECTION(p) = malloc(sizeof(POOL_CONNECTION_POOL_SLOT));
if (SECONDARY_CONNECTION(p) == NULL)
{
pool_error("pool_create_cp: malloc() failed");
return NULL;
}
create_cp(SECONDARY_CONNECTION(p), 1);
/* initialize Paramter Status save structure */
if (pool_init_params(&SECONDARY(p)->params))
{
return NULL;
}
p->num++; /* number of slots */
}
return p;
}
/*
* create actual connections to backends
*/
static POOL_CONNECTION_POOL *new_connection(POOL_CONNECTION_POOL *p)
{
POOL_CONNECTION_POOL_SLOT *s;
int active_backend_count = 0;
int i;
for (i=0;i<NUM_BACKENDS;i++)
{
pool_debug("new_connection: connecting %d backend", i);
if (!VALID_BACKEND(i))
{
pool_debug("new_connection: skipping slot %d because backend_status = %d",
i, BACKEND_INFO(i).backend_status);
continue;
}
s = malloc(sizeof(POOL_CONNECTION_POOL_SLOT));
if (s == NULL)
{
pool_error("new_connection: malloc() failed");
return NULL;
}
if (create_cp(s, i) == NULL)
{
/* connection failed. mark this backend down */
pool_error("new_connection: create_cp() failed");
/* If fail_over_on_backend_error is true, do failover.
* Otherwise, just exit this session.
*/
if (pool_config->fail_over_on_backend_error)
{
notice_backend_error(i);
}
else
{
pool_log("new_connection: do not failover because fail_over_on_backend_error is off");
}
child_exit(1);
}
p->info[i].create_time = time(NULL);
p->slots[i] = s;
if (pool_init_params(&s->con->params))
{
return NULL;
}
BACKEND_INFO(i).backend_status = CON_UP;
active_backend_count++;
}
if (active_backend_count > 0)
{
return p;
}
return NULL;
}
