/* 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
#include "settings.h"
/* connection counting (1) , disable connection counting (0) */
-#if 0
+#if 1
static YAZ_MUTEX g_mutex = 0;
static int no_connections = 0;
+static int total_no_connections = 0;
-static void connection_use(int delta)
+static int connection_use(int delta)
{
+ int result;
if (!g_mutex)
yaz_mutex_create(&g_mutex);
yaz_mutex_enter(g_mutex);
no_connections += delta;
+ result = no_connections;
+ if (delta > 0)
+ total_no_connections += delta;
yaz_mutex_leave(g_mutex);
+ if (delta == 0)
+ return result;
yaz_log(YLOG_LOG, "%s connections=%d", delta > 0 ? "INC" : "DEC",
no_connections);
+ return result;
+}
+
+int connections_count(void)
+{
+ return connection_use(0);
}
+
+
#else
#define connection_use(x)
+#define connections_count(x) 0
+#define connections_count_total(x) 0
#endif
enum {
Conn_Resolving,
Conn_Connecting,
- Conn_Open
+ Conn_Open,
+ Conn_Dead
} state;
int operation_timeout;
int session_timeout;
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)
{
// Creates a new connection for client, associated with the host of
// client's database
static struct connection *connection_create(struct client *cl,
+ struct host *host,
int operation_timeout,
int session_timeout,
iochan_man_t iochan_man)
{
struct connection *co;
- struct host *host = client_get_host(cl);
co = xmalloc(sizeof(*co));
co->host = host;
co->state = Conn_Resolving;
co->operation_timeout = operation_timeout;
co->session_timeout = session_timeout;
- if (host->ipport)
- connection_connect(co, iochan_man);
+
+ connection_connect(co, iochan_man);
yaz_mutex_enter(host->mutex);
co->next = co->host->connections;
if ((err = ZOOM_connection_error(link, &error, &addinfo)))
{
yaz_log(YLOG_LOG, "Error %s from %s",
- error, client_get_url(cl));
+ error, client_get_id(cl));
client_set_diagnostic(cl, err);
client_set_state(cl, Client_Error);
}
case ZOOM_EVENT_RECV_APDU:
break;
case ZOOM_EVENT_CONNECT:
- yaz_log(YLOG_LOG, "Connected to %s", client_get_url(cl));
+ yaz_log(YLOG_LOG, "Connected to %s", client_get_id(cl));
co->state = Conn_Open;
break;
case ZOOM_EVENT_RECV_SEARCH:
break;
default:
yaz_log(YLOG_LOG, "Unhandled event (%d) from %s",
- ev, client_get_url(cl));
+ ev, client_get_id(cl));
}
}
if (got_records)
{
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_id(cl));
client_set_state(cl, Client_Error);
+ remove_connection_from_host(co);
+ yaz_mutex_leave(host->mutex);
connection_destroy(co);
}
else
{
- yaz_log(YLOG_LOG, "idle timeout %s", client_get_url(cl));
+ yaz_log(YLOG_LOG, "%p Connection idle timeout %s", co, client_get_id(cl));
+ remove_connection_from_host(co);
+ yaz_mutex_leave(host->mutex);
connection_destroy(co);
}
- yaz_mutex_leave(host->mutex);
}
else
{
co->client = 0;
}
-void connect_resolver_host(struct host *host, iochan_man_t iochan_man)
-{
- struct connection *con;
-
-start:
- yaz_mutex_enter(host->mutex);
- con = host->connections;
- while (con)
- {
- if (con->state == Conn_Resolving)
- {
- if (!host->ipport) /* unresolved */
- {
- remove_connection_from_host(con);
- yaz_mutex_leave(host->mutex);
- connection_destroy(con);
- goto start;
- /* start all over .. at some point it will be NULL */
- }
- 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 */
- goto start;
- }
- else
- {
- yaz_mutex_leave(host->mutex);
- connection_connect(con, iochan_man);
- client_start_search(con->client);
- goto start;
- }
- }
- else
- {
- yaz_log(YLOG_LOG, "connect_resolver_host: state=%d", con->state);
- con = con->next;
- }
- }
- yaz_mutex_leave(host->mutex);
-}
-
static struct host *connection_get_host(struct connection *con)
{
return con->host;
const char *zproxy = session_setting_oneval(sdb, PZ_ZPROXY);
const char *apdulog = session_setting_oneval(sdb, PZ_APDULOG);
- assert(host->ipport);
assert(con);
ZOOM_options_set(zoptions, "async", "1");
if ((sru_version = session_setting_oneval(sdb, PZ_SRU_VERSION))
&& *sru_version)
ZOOM_options_set(zoptions, "sru_version", sru_version);
-
if (!(link = ZOOM_connection_create(zoptions)))
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create ZOOM Connection");
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);
+ {
+ ZOOM_connection_connect(link, host->hostport, 0);
+ }
con->link = link;
con->iochan = iochan_create(-1, connection_handler, 0, "connection_socket");
const struct timeval *abstime)
{
struct connection *co;
- struct host *host = client_get_host(cl);
struct session_database *sdb = client_get_database(cl);
const char *zproxy = session_setting_oneval(sdb, PZ_ZPROXY);
+ const char *url = session_setting_oneval(sdb, PZ_URL);
+ struct host *host = 0;
if (zproxy && zproxy[0] == '\0')
zproxy = 0;
- if (!host)
- return 0;
+ if (!url || !*url)
+ url = sdb->database->id;
- co = client_get_connection(cl);
+ host = find_host(client_get_session(cl)->service->server->database_hosts,
+ url);
+
+ yaz_log(YLOG_DEBUG, "client_prep_connection: target=%s url=%s",
+ client_get_id(cl), url);
- yaz_log(YLOG_DEBUG, "Client prep %s", client_get_url(cl));
+ co = client_get_connection(cl);
+ if (co)
+ {
+ assert(co->host);
+ if (co->host == host)
+ ; /* reusing connection. It's ours! */
+ else
+ {
+ client_incref(cl);
+ connection_release(co);
+ co = 0;
+ }
+ }
if (!co)
{
int max_connections = 0;
PZ_MAX_CONNECTIONS);
if (v && *v)
max_connections = atoi(v);
-
+
v = session_setting_oneval(client_get_database(cl),
PZ_REUSE_CONNECTIONS);
if (v && *v)
int num_connections = 0;
for (co = host->connections; co; co = co->next)
num_connections++;
- if (reuse_connections) {
+ if (reuse_connections)
+ {
for (co = host->connections; co; co = co->next)
{
if (connection_is_idle(co) &&
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));
+ yaz_log(YLOG_LOG, "out of connections %s", client_get_id(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;
else
{
yaz_mutex_leave(host->mutex);
- co = connection_create(cl, operation_timeout, session_timeout,
+ co = connection_create(cl, host, operation_timeout, session_timeout,
iochan_man);
}
+ assert(co->host);
}
if (co && co->link)
projects / pazpar2-moved-to-github.git / blobdiff