}
conp = &(*conp)->next;
}
+ yaz_cond_broadcast(con->host->cond_ready);
}
// Close connection and recycle structure
ev = ZOOM_connection_last_event(link);
#if 0
- yaz_log(YLOG_LOG, "ZOOM_EVENT_%s", ZOOM_get_event_str(ev));
+ yaz_log(YLOG_LOG, "%p Connection ZOOM_EVENT_%s", co, ZOOM_get_event_str(ev));
#endif
switch (ev)
{
case ZOOM_EVENT_END:
{
const char *error, *addinfo;
- int err;
+ int err;
if ((err = ZOOM_connection_error(link, &error, &addinfo)))
{
yaz_log(YLOG_LOG, "Error %s from %s",
error, client_get_url(cl));
+ client_set_diagnostic(cl, err);
+ client_set_state(cl, Client_Error);
}
- iochan_settimeout(iochan, co->session_timeout);
- client_set_diagnostic(cl, err);
- client_set_state(cl, Client_Idle);
+ else
+ {
+ iochan_settimeout(iochan, co->session_timeout);
+ client_set_state(cl, Client_Idle);
+ }
+ yaz_cond_broadcast(co->host->cond_ready);
}
break;
case ZOOM_EVENT_SEND_DATA:
int r = ZOOM_connection_exec_task(co->link);
if (!r)
yaz_log(YLOG_WARN, "No task was executed for connection");
+ iochan_setflags(co->iochan, ZOOM_connection_get_mask(co->link));
+ iochan_setfd(co->iochan, ZOOM_connection_get_socket(co->link));
}
static void connection_handler(IOCHAN iochan, int event)
client_set_state(cl, Client_Error);
connection_destroy(co);
}
- else if (client_get_state(co->client) == Client_Idle)
+ else
{
yaz_log(YLOG_LOG, "idle timeout %s", client_get_url(cl));
connection_destroy(co);
}
- else
- {
- yaz_log(YLOG_LOG, "ignore timeout %s", client_get_url(cl));
- }
yaz_mutex_leave(host->mutex);
}
else
non_block_events(co);
client_unlock(cl);
+
+ if (co->link)
+ {
+ iochan_setflags(iochan, ZOOM_connection_get_mask(co->link));
+ iochan_setfd(iochan, ZOOM_connection_get_socket(co->link));
+ }
}
}
return con->host;
}
-// Callback for use by event loop
-// We do this because ZOOM connections don't always have (the same) sockets
-static int socketfun(IOCHAN c)
-{
- struct connection *co = iochan_getdata(c);
- if (!co->link)
- return -1;
- return ZOOM_connection_get_socket(co->link);
-}
-
-// Because ZOOM always knows what events it is interested in; we may not
-static int maskfun(IOCHAN c)
-{
- struct connection *co = iochan_getdata(c);
- if (!co->link)
- return 0;
-
- // This is cheating a little, and assuming that eventl mask IDs are always
- // the same as ZOOM-C's.
- return ZOOM_connection_get_mask(co->link);
-}
-
static int connection_connect(struct connection *con, iochan_man_t iochan_man)
{
ZOOM_connection link = 0;
ZOOM_connection_connect(link, host->ipport, 0);
con->link = link;
- con->iochan = iochan_create(0, connection_handler, 0, "connection_socket");
+ con->iochan = iochan_create(-1, connection_handler, 0, "connection_socket");
con->state = Conn_Connecting;
iochan_settimeout(con->iochan, con->operation_timeout);
iochan_setdata(con->iochan, con);
- iochan_setsocketfun(con->iochan, socketfun);
- iochan_setmaskfun(con->iochan, maskfun);
iochan_add(iochan_man, con->iochan);
/* this fragment is bad DRY: from client_prep_connection */
// Ensure that client has a connection associated
int client_prep_connection(struct client *cl,
int operation_timeout, int session_timeout,
- iochan_man_t iochan_man)
+ iochan_man_t iochan_man,
+ const struct timeval *abstime)
{
struct connection *co;
struct host *host = client_get_host(cl);
if (!co)
{
+ int max_connections = 0;
+ const char *v = session_setting_oneval(client_get_database(cl),
+ PZ_MAX_CONNECTIONS);
+ if (v && *v)
+ max_connections = atoi(v);
+
// See if someone else has an idle connection
// We should look at timestamps here to select the longest-idle connection
yaz_mutex_enter(host->mutex);
- for (co = host->connections; co; co = co->next)
- if (connection_is_idle(co) &&
- (!co->client || client_get_state(co->client) == Client_Idle) &&
- !strcmp(ZOOM_connection_option_get(co->link, "user"),
- session_setting_oneval(client_get_database(cl),
- PZ_AUTHENTICATION)))
+ while (1)
+ {
+ int num_connections = 0;
+ for (co = host->connections; co; co = co->next)
+ num_connections++;
+ for (co = host->connections; co; co = co->next)
{
- if (zproxy == 0 && co->zproxy == 0)
- break;
- if (zproxy && co->zproxy && !strcmp(zproxy, co->zproxy))
- break;
+ if (connection_is_idle(co) &&
+ (!co->client || client_get_state(co->client) == Client_Idle) &&
+ !strcmp(ZOOM_connection_option_get(co->link, "user"),
+ session_setting_oneval(client_get_database(cl),
+ PZ_AUTHENTICATION)))
+ {
+ if (zproxy == 0 && co->zproxy == 0)
+ break;
+ if (zproxy && co->zproxy && !strcmp(zproxy, co->zproxy))
+ break;
+ }
}
+ if (co)
+ {
+ yaz_log(YLOG_LOG, "num_connections = %d (reusing)",
+ num_connections);
+ break;
+ }
+ if (max_connections <= 0 || num_connections < max_connections)
+ {
+ yaz_log(YLOG_LOG, "num_connections = %d (new); max = %d",
+ num_connections, max_connections);
+ break;
+ }
+ yaz_log(YLOG_LOG, "num_connections = %d (waiting) max = %d",
+ num_connections, max_connections);
+ if (yaz_cond_wait(host->cond_ready, host->mutex, abstime))
+ {
+ yaz_log(YLOG_LOG, "out of connections %s", client_get_url(cl));
+ client_set_state(cl, Client_Error);
+ yaz_mutex_leave(host->mutex);
+ return 0;
+ }
+ }
if (co)
{
connection_release(co);