/* This file is part of Pazpar2.
- Copyright (C) 2006-2011 Index Data
+ Copyright (C) 2006-2013 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
struct client *client;
char *zproxy;
enum {
- Conn_Resolving,
+ Conn_Closed,
Conn_Connecting,
- Conn_Open,
- Conn_Dead
+ Conn_Open
} state;
int operation_timeout;
int session_timeout;
ZOOM_connection_destroy(co->link);
iochan_destroy(co->iochan);
}
- yaz_log(YLOG_DEBUG, "%p Connection destroy %s", co, co->host->hostport);
+ yaz_log(YLOG_DEBUG, "%p Connection destroy %s", co, co->host->url);
if (co->client)
{
connection_use(-1);
}
-// Creates a new connection for client, associated with the host of
+// 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,
co->zproxy = 0;
client_set_connection(cl, co);
co->link = 0;
- co->state = Conn_Resolving;
+ co->state = Conn_Closed;
co->operation_timeout = operation_timeout;
co->session_timeout = session_timeout;
-
- connection_connect(co, iochan_man);
+
+ if (host->ipport)
+ connection_connect(co, iochan_man);
yaz_mutex_enter(host->mutex);
co->next = co->host->connections;
if (!cl)
continue;
ev = ZOOM_connection_last_event(link);
-
+
#if 1
yaz_log(YLOG_DEBUG, "%p Connection ZOOM_EVENT_%s", co, ZOOM_get_event_str(ev));
#endif
- switch (ev)
+ switch (ev)
{
+ case ZOOM_EVENT_TIMEOUT:
+ break;
case ZOOM_EVENT_END:
{
const char *error, *addinfo;
{
yaz_log(YLOG_LOG, "Error %s from %s",
error, client_get_id(cl));
- client_set_diagnostic(cl, err);
+ client_set_diagnostic(cl, err, error, addinfo);
client_set_state(cl, Client_Error);
}
else
default:
yaz_log(YLOG_LOG, "Unhandled event (%d) from %s",
ev, client_get_id(cl));
+ break;
}
}
if (got_records)
{
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));
+ {
+ const char *error, *addinfo;
+ int err;
+ if ((err = ZOOM_connection_error(co->link, &error, &addinfo)))
+ {
+ if (co->client)
+ {
+ yaz_log(YLOG_LOG, "Error %s from %s",
+ error, client_get_id(co->client));
+ client_set_diagnostic(co->client, err, error, addinfo);
+ client_set_state_nb(co->client, Client_Error);
+ }
+ }
+ }
+ else
+ {
+ 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)
yaz_mutex_enter(host->mutex);
cl = co->client;
- if (!cl)
+ if (!cl)
{
/* no client associated with it.. We are probably getting
a closed connection from the target.. Or, perhaps, an unexpected
}
else if (event & EVENT_TIMEOUT)
{
- if (co->state == Conn_Connecting)
- {
- yaz_log(YLOG_WARN, "%p connect timeout %s", co, client_get_id(cl));
+ ZOOM_connection_fire_event_timeout(co->link);
+ client_lock(cl);
+ non_block_events(co);
+ client_unlock(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, "%p Connection idle timeout %s", co, client_get_id(cl));
- remove_connection_from_host(co);
- yaz_mutex_leave(host->mutex);
- connection_destroy(co);
- }
+ remove_connection_from_host(co);
+ yaz_mutex_leave(host->mutex);
+ connection_destroy(co);
}
else
{
non_block_events(co);
ZOOM_connection_fire_event_socket(co->link, event);
-
+
non_block_events(co);
client_unlock(cl);
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_Closed)
+ {
+ 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;
static int connection_connect(struct connection *con, iochan_man_t iochan_man)
{
- ZOOM_connection link = 0;
struct host *host = connection_get_host(con);
ZOOM_options zoptions = ZOOM_options_create();
const char *auth;
const char *sru_version = 0;
struct session_database *sdb = client_get_database(con->client);
- const char *zproxy = session_setting_oneval(sdb, PZ_ZPROXY);
const char *apdulog = session_setting_oneval(sdb, PZ_APDULOG);
assert(con);
ZOOM_options_set(zoptions, "async", "1");
ZOOM_options_set(zoptions, "implementationName", PACKAGE_NAME);
ZOOM_options_set(zoptions, "implementationVersion", VERSION);
-
+
if ((charset = session_setting_oneval(sdb, PZ_NEGOTIATION_CHARSET)))
ZOOM_options_set(zoptions, "charset", charset);
-
- if (zproxy && *zproxy)
+
+ assert(host->ipport);
+ if (host->proxy)
{
- con->zproxy = xstrdup(zproxy);
- ZOOM_options_set(zoptions, "proxy", zproxy);
+ yaz_log(YLOG_LOG, "proxy=%s", host->ipport);
+ ZOOM_options_set(zoptions, "proxy", host->ipport);
}
+ else
+ {
+ assert(host->tproxy);
+ yaz_log(YLOG_LOG, "tproxy=%s", host->ipport);
+ ZOOM_options_set(zoptions, "tproxy", host->ipport);
+ }
+
if (apdulog && *apdulog)
ZOOM_options_set(zoptions, "apdulog", apdulog);
ZOOM_options_set(zoptions, "user", auth);
if ((sru = session_setting_oneval(sdb, PZ_SRU)) && *sru)
ZOOM_options_set(zoptions, "sru", sru);
- if ((sru_version = session_setting_oneval(sdb, PZ_SRU_VERSION))
+ 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)))
+ if (!(con->link = ZOOM_connection_create(zoptions)))
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create ZOOM Connection");
ZOOM_options_destroy(zoptions);
return -1;
}
- if (sru && *sru)
+ if (sru && *sru && !strstr(host->url, "://"))
{
- char http_hostport[512];
- strcpy(http_hostport, "http://");
- strcat(http_hostport, host->hostport);
- ZOOM_connection_connect(link, http_hostport, 0);
+ WRBUF w = wrbuf_alloc();
+ wrbuf_puts(w, "http://");
+ wrbuf_puts(w, host->url);
+ ZOOM_connection_connect(con->link, wrbuf_cstr(w), 0);
+ wrbuf_destroy(w);
}
else
{
- ZOOM_connection_connect(link, host->hostport, 0);
+ ZOOM_connection_connect(con->link, host->url, 0);
}
-
- con->link = link;
con->iochan = iochan_create(-1, connection_handler, 0, "connection_socket");
con->state = Conn_Connecting;
iochan_settimeout(con->iochan, con->operation_timeout);
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);
+ const char *sru = session_setting_oneval(sdb, PZ_SRU);
struct host *host = 0;
+ int default_port = *sru ? 80 : 210;
if (zproxy && zproxy[0] == '\0')
zproxy = 0;
url = sdb->database->id;
host = find_host(client_get_session(cl)->service->server->database_hosts,
- url);
+ url, zproxy, default_port, iochan_man);
yaz_log(YLOG_DEBUG, "client_prep_connection: target=%s url=%s",
client_get_id(cl), url);
+ if (!host)
+ return 0;
co = client_get_connection(cl);
if (co)
{
assert(co->host);
- if (co->host == host)
- ; /* reusing connection. It's ours! */
- else
+ if (co->host == host && client_get_state(cl) == Client_Idle)
{
- client_incref(cl);
- connection_release(co);
- co = 0;
+ return 2;
}
+ client_incref(cl);
+ connection_release(co);
+ co = 0;
}
if (!co)
{
PZ_MAX_CONNECTIONS);
if (v && *v)
max_connections = atoi(v);
-
+
v = session_setting_oneval(client_get_database(cl),
PZ_REUSE_CONNECTIONS);
if (v && *v)