/* This file is part of Pazpar2.
- Copyright (C) 2006-2010 Index Data
+ Copyright (C) 2006-2011 Index Data
Pazpar2 is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
enum {
Conn_Resolving,
Conn_Connecting,
- Conn_Open
+ Conn_Open,
+ Conn_Dead
} state;
int operation_timeout;
int session_timeout;
}
conp = &(*conp)->next;
}
+ yaz_cond_broadcast(con->host->cond_ready);
}
// Close connection and recycle structure
ZOOM_connection_destroy(co->link);
iochan_destroy(co->iochan);
}
- yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
+ yaz_log(YLOG_DEBUG, "%p Connection destroy %s", co, co->host->hostport);
if (co->client)
{
client_disconnect(co->client);
}
- remove_connection_from_host(co);
xfree(co->zproxy);
xfree(co);
connection_use(-1);
continue;
ev = ZOOM_connection_last_event(link);
-#if 0
- yaz_log(YLOG_LOG, "ZOOM_EVENT_%s", ZOOM_get_event_str(ev));
+#if 1
+ yaz_log(YLOG_DEBUG, "%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);
+ }
+ else
+ {
+ iochan_settimeout(iochan, co->session_timeout);
+ client_set_state(cl, Client_Idle);
}
- iochan_settimeout(iochan, co->session_timeout);
- client_set_diagnostic(cl, err);
- client_set_state(cl, Client_Idle);
+ yaz_cond_broadcast(co->host->cond_ready);
}
break;
case ZOOM_EVENT_SEND_DATA:
struct client *cl = co->client;
if (cl)
{
+ client_check_preferred_watch(cl);
client_got_records(cl);
}
}
a closed connection from the target.. Or, perhaps, an unexpected
package.. We will just close the connection */
yaz_log(YLOG_LOG, "timeout connection %p event=%d", co, event);
- connection_destroy(co);
+ remove_connection_from_host(co);
yaz_mutex_leave(host->mutex);
+ connection_destroy(co);
}
else if (event & EVENT_TIMEOUT)
{
if (co->state == Conn_Connecting)
{
- yaz_log(YLOG_WARN, "connect timeout %s", client_get_url(cl));
+ yaz_log(YLOG_WARN, "%p connect timeout %s", co, client_get_url(cl));
client_set_state(cl, Client_Error);
- connection_destroy(co);
- }
- else if (client_get_state(co->client) == Client_Idle)
- {
- yaz_log(YLOG_LOG, "idle timeout %s", client_get_url(cl));
+ remove_connection_from_host(co);
+ yaz_mutex_leave(host->mutex);
connection_destroy(co);
}
else
{
- yaz_log(YLOG_LOG, "ignore timeout %s", client_get_url(cl));
+ yaz_log(YLOG_LOG, "%p Connection idle timeout %s", co, client_get_url(cl));
+ remove_connection_from_host(co);
+ yaz_mutex_leave(host->mutex);
+ connection_destroy(co);
}
- yaz_mutex_leave(host->mutex);
}
else
{
{
if (!host->ipport) /* unresolved */
{
+ remove_connection_from_host(con);
yaz_mutex_leave(host->mutex);
connection_destroy(con);
goto start;
}
else if (!con->client)
{
+ remove_connection_from_host(con);
yaz_mutex_leave(host->mutex);
connection_destroy(con);
/* start all over .. at some point it will be NULL */
strcat(http_hostport, host->hostport);
ZOOM_connection_connect(link, http_hostport, 0);
}
+ else if (zproxy && *zproxy)
+ ZOOM_connection_connect(link, host->hostport, 0);
else
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);
// 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;
+ int reuse_connections = 1;
+ const char *v = session_setting_oneval(client_get_database(cl),
+ PZ_MAX_CONNECTIONS);
+ if (v && *v)
+ max_connections = atoi(v);
+
+ v = session_setting_oneval(client_get_database(cl),
+ PZ_REUSE_CONNECTIONS);
+ if (v && *v)
+ reuse_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)))
- {
- if (zproxy == 0 && co->zproxy == 0)
- break;
- if (zproxy && co->zproxy && !strcmp(zproxy, co->zproxy))
+ while (1)
+ {
+ int num_connections = 0;
+ for (co = host->connections; co; co = co->next)
+ num_connections++;
+ if (reuse_connections) {
+ 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)))
+ {
+ 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)
{
+ yaz_log(YLOG_LOG, "%p Connection reuse. state: %d", co, co->state);
connection_release(co);
client_set_connection(cl, co);
co->client = cl;
projects / pazpar2-moved-to-github.git / blobdiff