* Copyright (c) 1998-2003, Index Data.
* See the file LICENSE for details.
*
- * $Id: yaz-proxy.cpp,v 1.56 2003-10-10 17:58:29 adam Exp $
+ * $Id: yaz-proxy.cpp,v 1.63 2003-10-20 18:31:44 adam Exp $
*/
#include <assert.h>
return "other";
}
-Yaz_Proxy::Yaz_Proxy(IYaz_PDU_Observable *the_PDU_Observable) :
+Yaz_Proxy::Yaz_Proxy(IYaz_PDU_Observable *the_PDU_Observable,
+ Yaz_Proxy *parent) :
Yaz_Z_Assoc(the_PDU_Observable), m_bw_stat(60), m_pdu_stat(60)
{
m_PDU_Observable = the_PDU_Observable;
m_client = 0;
- m_parent = 0;
+ m_parent = parent;
m_clientPool = 0;
m_seqno = 1;
m_keepalive_limit_bw = 500000;
m_default_target = 0;
m_proxy_authentication = 0;
m_max_clients = 150;
+ m_log_mask = 0;
m_seed = time(0);
m_client_idletime = 600;
m_target_idletime = 600;
m_optimize = xstrdup ("1");
- strcpy(m_session_str, "x");
+ strcpy(m_session_str, "0");
m_session_no=0;
m_bytes_sent = m_bytes_recv = 0;
m_bw_hold_PDU = 0;
xfree(m_config_fname);
m_config_fname = xstrdup(config);
int r = m_config->read_xml(config);
+ if (!r)
+ m_config->get_generic_info(&m_log_mask, &m_max_clients);
return r;
}
int r = cfg->read_xml(m_config_fname);
if (r)
yaz_log(LOG_WARN, "reconfigure failed");
+ else
+ {
+ m_log_mask = 0;
+ cfg->get_generic_info(&m_log_mask, &m_max_clients);
+ }
}
else
yaz_log(LOG_LOG, "reconfigure");
*the_PDU_Observable, int fd)
{
check_reconfigure();
- Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable);
- new_proxy->m_parent = this;
+ Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable, this);
new_proxy->m_config = 0;
new_proxy->m_config_fname = 0;
new_proxy->timeout(m_client_idletime);
new_proxy->m_target_idletime = m_target_idletime;
new_proxy->set_default_target(m_default_target);
+ new_proxy->m_max_clients = m_max_clients;
+ new_proxy->m_log_mask = m_log_mask;
new_proxy->set_APDU_log(get_APDU_log());
+ if (m_log_mask & PROXY_LOG_APDU_CLIENT)
+ new_proxy->set_APDU_yazlog(1);
+ else
+ new_proxy->set_APDU_yazlog(0);
new_proxy->set_proxy_authentication(m_proxy_authentication);
sprintf(new_proxy->m_session_str, "%ld:%d ", (long) time(0), m_session_no);
m_session_no++;
Yaz_ProxyConfig *cfg = check_reconfigure();
if (proxy_host)
{
+#if 0
+/* only to be enabled for debugging... */
+ if (!strcmp(proxy_host, "stop"))
+ exit(0);
+#endif
xfree(m_default_target);
m_default_target = xstrdup(proxy_host);
proxy_host = m_default_target;
}
int client_idletime = -1;
+ url[0] = m_default_target;
+ url[1] = 0;
if (cfg)
+ {
+ int pre_init = 0;
cfg->get_target_info(proxy_host, url, &m_bw_max,
&m_pdu_max, &m_max_record_retrieve,
&m_target_idletime, &client_idletime,
&parent->m_max_clients,
&m_keepalive_limit_bw,
- &m_keepalive_limit_pdu);
+ &m_keepalive_limit_pdu,
+ &pre_init);
+ }
if (client_idletime != -1)
{
m_client_idletime = client_idletime;
m_proxyTarget = (char*) xstrdup(load_balance(url));
}
if (cookie && *cookie)
- {
- Yaz_ProxyClient *cc = 0;
-
+ { // search in sessions with a cookie
for (c = parent->m_clientPool; c; c = c->m_next)
{
assert (c->m_prev);
if (c->m_cookie && !strcmp(cookie,c->m_cookie) &&
!strcmp(m_proxyTarget, c->get_hostname()))
{
- cc = c;
- }
- }
- if (cc)
- {
- // found it in cache
- c = cc;
- // The following handles "cancel"
- // If connection is busy (waiting for PDU) and
- // we have an initRequest we can safely do re-open
- if (c->m_waiting && apdu->which == Z_APDU_initRequest)
- {
- yaz_log (LOG_LOG, "%s REOPEN target=%s", m_session_str,
- c->get_hostname());
- c->close();
- c->m_init_flag = 0;
-
- c->m_last_ok = 0;
- c->m_cache.clear();
- c->m_last_resultCount = 0;
- c->m_sr_transform = 0;
- c->m_waiting = 0;
- c->m_resultSetStartPoint = 0;
- if (c->client(m_proxyTarget))
+ // Found it in cache
+ // The following handles "cancel"
+ // If connection is busy (waiting for PDU) and
+ // we have an initRequest we can safely do re-open
+ if (c->m_waiting && apdu->which == Z_APDU_initRequest)
{
- delete c;
- return 0;
+ yaz_log (LOG_LOG, "%s REOPEN target=%s", m_session_str,
+ c->get_hostname());
+ c->close();
+ c->m_init_flag = 0;
+
+ c->m_last_ok = 0;
+ c->m_cache.clear();
+ c->m_last_resultCount = 0;
+ c->m_sr_transform = 0;
+ c->m_waiting = 0;
+ c->m_resultSetStartPoint = 0;
+ c->m_target_idletime = m_target_idletime;
+ if (c->client(m_proxyTarget))
+ {
+ delete c;
+ return 0;
+ }
+ c->timeout(30);
}
- c->timeout(m_target_idletime);
+ c->m_seqno = parent->m_seqno;
+ if (c->m_server && c->m_server != this)
+ c->m_server->m_client = 0;
+ c->m_server = this;
+ (parent->m_seqno)++;
+ yaz_log (LOG_DEBUG, "get_client 1 %p %p", this, c);
+ return c;
}
- c->m_seqno = parent->m_seqno;
- if (c->m_server && c->m_server != this)
- c->m_server->m_client = 0;
- c->m_server = this;
- (parent->m_seqno)++;
- yaz_log (LOG_DEBUG, "get_client 1 %p %p", this, c);
- return c;
}
}
else if (!c)
{
- Yaz_ProxyClient *cc = 0;
-
+ // don't have a client session yet. Search in session w/o cookie
for (c = parent->m_clientPool; c; c = c->m_next)
{
assert (c->m_prev);
assert (*c->m_prev == c);
if (c->m_server == 0 && c->m_cookie == 0 &&
+ c->m_waiting == 0 &&
!strcmp(m_proxyTarget, c->get_hostname()))
{
- cc = c;
- }
- }
- if (cc)
- {
- // found it in cache
- c = cc;
+ // found it in cache
+ yaz_log (LOG_LOG, "%sREUSE %d %d %s",
+ m_session_str,
+ c->m_seqno, parent->m_seqno, c->get_hostname());
+
+ c->m_seqno = parent->m_seqno;
+ assert(c->m_server == 0);
+ c->m_server = this;
- yaz_log (LOG_LOG, "%sREUSE %d %d %s",
- m_session_str,
- c->m_seqno, parent->m_seqno, c->get_hostname());
+ if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
+ c->set_APDU_yazlog(1);
+ else
+ c->set_APDU_yazlog(0);
- c->m_seqno = parent->m_seqno;
- assert(c->m_server == 0);
- c->m_server = this;
-
- (parent->m_seqno)++;
- return c;
+ (parent->m_seqno)++;
+
+ parent->pre_init();
+
+ return c;
+ }
}
}
if (!m_client)
delete c->m_server;
}
(parent->m_seqno)++;
+ c->m_target_idletime = m_target_idletime;
+ c->timeout(m_target_idletime);
+
+ if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
+ c->set_APDU_yazlog(1);
+ else
+ c->set_APDU_yazlog(0);
+
return c;
}
}
{
yaz_log (LOG_LOG, "%sNEW %d %s",
m_session_str, parent->m_seqno, m_proxyTarget);
- c = new Yaz_ProxyClient(m_PDU_Observable->clone());
+ c = new Yaz_ProxyClient(m_PDU_Observable->clone(), parent);
c->m_next = parent->m_clientPool;
if (c->m_next)
c->m_next->m_prev = &c->m_next;
delete c;
return 0;
}
+ c->m_target_idletime = m_target_idletime;
c->timeout(30);
+ if (parent->m_log_mask & PROXY_LOG_APDU_SERVER)
+ c->set_APDU_yazlog(1);
+ else
+ c->set_APDU_yazlog(0);
}
yaz_log (LOG_DEBUG, "get_client 3 %p %p", this, c);
return c;
convert_to_marcxml(p->u.databaseOrSurDiagnostics);
}
int r = send_Z_PDU(apdu, &len);
- yaz_log (LOG_DEBUG, "%sSending %s to client %d bytes", m_session_str,
- apdu_name(apdu), len);
+ if (m_log_mask & PROXY_LOG_APDU_CLIENT)
+ yaz_log (LOG_DEBUG, "%sSending %s to client %d bytes", m_session_str,
+ apdu_name(apdu), len);
m_bytes_sent += len;
m_bw_stat.add_bytes(len);
return r;
{
int len = 0;
int r = send_Z_PDU(apdu, &len);
- yaz_log (LOG_DEBUG, "%sSending %s to %s %d bytes",
- get_session_str(),
- apdu_name(apdu), get_hostname(), len);
+ if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
+ yaz_log (LOG_LOG, "%sSending %s to %s %d bytes",
+ get_session_str(),
+ apdu_name(apdu), get_hostname(), len);
m_bytes_sent += len;
return r;
}
Z_APDU *Yaz_Proxy::result_set_optimize(Z_APDU *apdu)
{
- if (*m_parent->m_optimize == '0')
- return apdu; // don't optimize result sets..
if (apdu->which == Z_APDU_presentRequest)
{
Z_PresentRequest *pr = apdu->u.presentRequest;
int toget = *pr->numberOfRecordsRequested;
int start = *pr->resultSetStartPoint;
- if (m_client->m_last_resultSetId &&
- !strcmp(m_client->m_last_resultSetId, pr->resultSetId))
+ yaz_log(LOG_LOG, "%sPresent %s %d+%d", m_session_str,
+ pr->resultSetId, start, toget);
+
+ if (*m_parent->m_optimize == '0')
+ return apdu;
+
+ if (!m_client->m_last_resultSetId)
{
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
+ new_apdu->u.presentResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(), 30,
+ pr->resultSetId);
+ send_to_client(new_apdu);
+ return 0;
+ }
+ if (!strcmp(m_client->m_last_resultSetId, pr->resultSetId))
+ {
+ if (start+toget-1 > m_client->m_last_resultCount)
+ {
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
+ new_apdu->u.presentResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(), 13, 0);
+ send_to_client(new_apdu);
+ return 0;
+ }
if (m_client->m_cache.lookup (odr_encode(), &npr, start, toget,
pr->preferredRecordSyntax,
pr->recordComposition))
char query_str[120];
this_query->print(query_str, sizeof(query_str)-1);
- yaz_log(LOG_LOG, "%sQuery %s", m_session_str, query_str);
+ yaz_log(LOG_LOG, "%sSearch %s", m_session_str, query_str);
- if (m_client->m_last_ok && m_client->m_last_query &&
+ if (*m_parent->m_optimize != '0' &&
+ m_client->m_last_ok && m_client->m_last_query &&
m_client->m_last_query->match(this_query) &&
!strcmp(m_client->m_last_resultSetId, sr->resultSetName) &&
m_client->m_last_databases.match(this_databases))
int reduce = 0;
m_bytes_recv += len;
- yaz_log (LOG_DEBUG, "%sReceiving %s from client %d bytes", m_session_str,
- apdu_name(apdu), len);
+ if (m_log_mask & PROXY_LOG_APDU_CLIENT)
+ yaz_log (LOG_DEBUG, "%sReceiving %s from client %d bytes",
+ m_session_str, apdu_name(apdu), len);
if (m_bw_hold_PDU) // double incoming PDU. shutdown now.
shutdown();
if (apdu->which == Z_APDU_searchRequest)
{
Z_SearchRequest *sr = apdu->u.searchRequest;
- if (*sr->smallSetUpperBound > 0 || *sr->largeSetLowerBound > 1)
+ if (*sr->smallSetUpperBound > 0 || *sr->mediumSetPresentNumber > 0)
{
int err = 0;
char *addinfo = 0;
yaz_log (LOG_LOG, "%sShutdown (client to proxy)",
m_session_str);
}
+ if (m_parent)
+ m_parent->pre_init();
delete this;
}
void Yaz_ProxyClient::connectNotify()
{
- yaz_log (LOG_LOG, "%sConnection accepted by %s", get_session_str(),
- get_hostname());
- int to;
- if (m_server)
- to = m_server->get_target_idletime();
- else
- to = 600;
- timeout(to);
+ const char *s = get_session_str();
+ const char *h = get_hostname();
+ yaz_log (LOG_LOG, "%sConnection accepted by %s timeout=%d", s, h,
+ m_target_idletime);
+ timeout(m_target_idletime);
+ if (!m_server)
+ pre_init_client();
}
IYaz_PDU_Observer *Yaz_ProxyClient::sessionNotify(IYaz_PDU_Observable
*the_PDU_Observable, int fd)
{
- return new Yaz_ProxyClient(the_PDU_Observable);
+ return new Yaz_ProxyClient(the_PDU_Observable, 0);
}
Yaz_ProxyClient::~Yaz_ProxyClient()
xfree (m_cookie);
}
+void Yaz_ProxyClient::pre_init_client()
+{
+ Z_APDU *apdu = create_Z_PDU(Z_APDU_initRequest);
+ Z_InitRequest *req = apdu->u.initRequest;
+
+ ODR_MASK_SET(req->options, Z_Options_search);
+ ODR_MASK_SET(req->options, Z_Options_present);
+ ODR_MASK_SET(req->options, Z_Options_namedResultSets);
+ ODR_MASK_SET(req->options, Z_Options_triggerResourceCtrl);
+ ODR_MASK_SET(req->options, Z_Options_scan);
+ ODR_MASK_SET(req->options, Z_Options_sort);
+ ODR_MASK_SET(req->options, Z_Options_extendedServices);
+ ODR_MASK_SET(req->options, Z_Options_delSet);
+
+ ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_1);
+ ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_2);
+ ODR_MASK_SET(req->protocolVersion, Z_ProtocolVersion_3);
+
+ if (send_to_target(apdu) < 0)
+ {
+ delete this;
+ }
+ else
+ {
+ m_waiting = 1;
+ m_init_flag = 1;
+ }
+}
+
+void Yaz_Proxy::pre_init()
+{
+ int i;
+ const char *name = 0;
+ const char *zurl_in_use[MAX_ZURL_PLEX];
+ int limit_bw, limit_pdu, limit_req;
+ int target_idletime, client_idletime;
+ int max_clients;
+ int keepalive_limit_bw, keepalive_limit_pdu;
+ int pre_init;
+
+ Yaz_ProxyConfig *cfg = check_reconfigure();
+
+ zurl_in_use[0] = 0;
+
+ if (m_log_mask & PROXY_LOG_APDU_CLIENT)
+ set_APDU_yazlog(1);
+ else
+ set_APDU_yazlog(0);
+
+ for (i = 0; cfg && cfg->get_target_no(i, &name, zurl_in_use,
+ &limit_bw, &limit_pdu, &limit_req,
+ &target_idletime, &client_idletime,
+ &max_clients,
+ &keepalive_limit_bw,
+ &keepalive_limit_pdu,
+ &pre_init) ; i++)
+ {
+ if (pre_init)
+ {
+ int j;
+ for (j = 0; zurl_in_use[j]; j++)
+ {
+ Yaz_ProxyClient *c;
+ int spare = 0;
+ int in_use = 0;
+ int other = 0;
+ for (c = m_clientPool; c; c = c->m_next)
+ {
+ if (!strcmp(zurl_in_use[j], c->get_hostname()))
+ {
+ if (c->m_cookie == 0)
+ {
+ if (c->m_server == 0)
+ spare++;
+ else
+ in_use++;
+ }
+ else
+ other++;
+ }
+ }
+ yaz_log(LOG_LOG, "%s pre-init %s %s use=%d other=%d spare=%d preinit=%d",
+ m_session_str,
+ name, zurl_in_use[j], in_use, other, spare, pre_init);
+ if (spare < pre_init)
+ {
+ c = new Yaz_ProxyClient(m_PDU_Observable->clone(), this);
+ c->m_next = m_clientPool;
+ if (c->m_next)
+ c->m_next->m_prev = &c->m_next;
+ m_clientPool = c;
+ c->m_prev = &m_clientPool;
+
+ if (m_log_mask & PROXY_LOG_APDU_SERVER)
+ c->set_APDU_yazlog(1);
+ else
+ c->set_APDU_yazlog(0);
+
+ if (c->client(zurl_in_use[j]))
+ {
+ timeout(60);
+ delete c;
+ return;
+ }
+ c->timeout(30);
+ c->m_waiting = 1;
+ c->m_target_idletime = target_idletime;
+ c->m_seqno = m_seqno++;
+ }
+ }
+ }
+ }
+}
+
void Yaz_Proxy::timeoutNotify()
{
- if (m_bw_hold_PDU)
+ if (m_parent)
{
- timeout(m_client_idletime);
- Z_APDU *apdu = m_bw_hold_PDU;
- m_bw_hold_PDU = 0;
- recv_Z_PDU_0(apdu);
+ if (m_bw_hold_PDU)
+ {
+ timeout(m_client_idletime);
+ Z_APDU *apdu = m_bw_hold_PDU;
+ m_bw_hold_PDU = 0;
+ recv_Z_PDU_0(apdu);
+ }
+ else
+ {
+ yaz_log (LOG_LOG, "%sTimeout (client to proxy)", m_session_str);
+ shutdown();
+ }
}
else
{
- yaz_log (LOG_LOG, "%sTimeout (client to proxy)", m_session_str);
- shutdown();
+ timeout(600);
+ pre_init();
}
}
{
yaz_log (LOG_LOG, "%sTimeout (proxy to target) %s", get_session_str(),
get_hostname());
+ m_waiting = 1;
+ m_root->pre_init();
shutdown();
}
-Yaz_ProxyClient::Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable) :
+Yaz_ProxyClient::Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable,
+ Yaz_Proxy *parent) :
Yaz_Z_Assoc (the_PDU_Observable)
{
m_cookie = 0;
m_resultSetStartPoint = 0;
m_bytes_sent = m_bytes_recv = 0;
m_pdu_recv = 0;
+ m_server = 0;
+ m_seqno = 0;
+ m_target_idletime = 600;
+ m_root = parent;
}
const char *Yaz_Proxy::option(const char *name, const char *value)
m_bytes_recv += len;
m_pdu_recv++;
m_waiting = 0;
- yaz_log (LOG_DEBUG, "%sReceiving %s from %s %d bytes", get_session_str(),
- apdu_name(apdu), get_hostname(), len);
+ if (m_root->get_log_mask() & PROXY_LOG_REQ_SERVER)
+ yaz_log (LOG_LOG, "%sReceiving %s from %s %d bytes", get_session_str(),
+ apdu_name(apdu), get_hostname(), len);
if (apdu->which == Z_APDU_initResponse)
{
+ if (!m_server) // if this is a pre init session , check for more
+ m_root->pre_init();
NMEM nmem = odr_extract_mem (odr_decode());
odr_reset (m_init_odr);
nmem_transfer (m_init_odr->mem, nmem);
shutdown();
}
}
+
+void Yaz_Proxy::server(const char *addr)
+{
+ Yaz_Z_Assoc::server(addr);
+
+ timeout(1);
+}
+
projects / yazpp-moved-to-github.git / blobdiff