/*
- * Copyright (c) 1998-2001, Index Data.
+ * Copyright (c) 1998-2003, Index Data.
* See the file LICENSE for details.
*
- * $Id: yaz-proxy.cpp,v 1.31 2002-01-14 12:01:28 adam Exp $
+ * $Id: yaz-proxy.cpp,v 1.39 2003-06-09 22:20:39 adam Exp $
*/
#include <assert.h>
#include <time.h>
#include <yaz/log.h>
-#include <yaz++/yaz-proxy.h>
+#include <yaz++/proxy.h>
Yaz_Proxy::Yaz_Proxy(IYaz_PDU_Observable *the_PDU_Observable) :
Yaz_Z_Assoc(the_PDU_Observable)
m_proxy_authentication = 0;
m_max_clients = 50;
m_seed = time(0);
+ m_idletime = 600;
m_optimize = xstrdup ("1");
}
{
Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable);
new_proxy->m_parent = this;
- new_proxy->timeout(500);
+ new_proxy->timeout(m_idletime);
new_proxy->set_proxy_target(m_proxyTarget);
new_proxy->set_APDU_log(get_APDU_log());
new_proxy->set_proxy_authentication(m_proxy_authentication);
+ yaz_log (LOG_LOG, "New session p=%p", new_proxy);
return new_proxy;
}
c->m_last_resultCount = 0;
c->m_sr_transform = 0;
c->m_waiting = 0;
- c->timeout(600);
+ c->timeout(m_idletime);
}
c->m_seqno = parent->m_seqno;
if (c->m_server && c->m_server != this)
return c;
}
}
+ else if (!c)
+ {
+ Yaz_ProxyClient *cc = 0;
+
+ 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] == 0 &&
+ !strcmp(m_proxyTarget, c->get_hostname()))
+ {
+ cc = c;
+ }
+ }
+ if (cc)
+ {
+ // found it in cache
+ c = cc;
+
+ c->m_seqno = parent->m_seqno;
+ assert(c->m_server == 0);
+ c->m_server = this;
+ c->m_seqno = parent->m_seqno;
+ (parent->m_seqno)++;
+ yaz_log (LOG_LOG, "get_client 10 %p %p", this, c);
+ return c;
+ }
+ }
if (!m_client)
{
if (apdu->which != Z_APDU_initRequest)
yaz_log (LOG_LOG, "no first INIT!");
return 0;
}
- yaz_log (LOG_LOG, "got InitRequest");
Z_InitRequest *initRequest = apdu->u.initRequest;
if (!initRequest->idAuthentication)
Yaz_ProxyClient *c_min = 0;
int min_seq = -1;
int no_of_clients = 0;
+ yaz_log (LOG_LOG, "Existing sessions");
for (c = parent->m_clientPool; c; c = c->m_next)
{
+ yaz_log (LOG_LOG, " Session %-3d wait=%d %s", c->m_seqno,
+ c->m_waiting, c->get_hostname());
no_of_clients++;
if (min_seq < 0 || c->m_seqno < min_seq)
{
c = c_min;
if (c->m_waiting || strcmp(m_proxyTarget, c->get_hostname()))
{
- yaz_log (LOG_LOG, "Yaz_Proxy::get_client re-init session %d",
+ yaz_log (LOG_LOG, "Replace session %d",
c->m_seqno);
if (c->m_server && c->m_server != this)
delete c->m_server;
}
else
{
- yaz_log (LOG_LOG,
- "Yaz_Proxy::get_client re-use session %d to %d",
+ yaz_log (LOG_LOG, "Reuse session %d to %d",
c->m_seqno, parent->m_seqno);
if (cookie)
strcpy (c->m_cookie, cookie);
}
else
{
- yaz_log (LOG_LOG, "Yaz_Proxy::get_client making session %d",
- parent->m_seqno);
+ yaz_log (LOG_LOG, "Making session %d %s", parent->m_seqno,
+ m_proxyTarget);
c = new Yaz_ProxyClient(m_PDU_Observable->clone());
c->m_next = parent->m_clientPool;
if (c->m_next)
strcpy (c->m_cookie, cookie);
else
c->m_cookie[0] = '\0';
- yaz_log (LOG_LOG, "Yaz_Proxy::get_client connect to %s",
- m_proxyTarget);
+ yaz_log (LOG_LOG, "Connecting to %s", m_proxyTarget);
c->m_seqno = parent->m_seqno;
c->client(m_proxyTarget);
c->m_init_flag = 0;
c->m_last_ok = 0;
c->m_sr_transform = 0;
c->m_waiting = 0;
- c->timeout(10);
+ c->timeout(20);
(parent->m_seqno)++;
}
{
if (apdu->which != Z_APDU_searchRequest)
return apdu;
- if (*m_parent->m_optimize != '1')
- return apdu;
+ if (*m_parent->m_optimize == '0')
+ return apdu; // don't optimize result sets..
Z_SearchRequest *sr = apdu->u.searchRequest;
Yaz_Z_Query *this_query = new Yaz_Z_Query;
Yaz_Z_Databases this_databases;
if (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))
{
delete this_query;
{
// medium Set
// send present request (medium size)
- yaz_log (LOG_LOG, "Yaz_Proxy::result_set_optimize medium set");
+ yaz_log (LOG_LOG, "Optimizing search for medium set");
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
Z_PresentRequest *pr = new_apdu->u.presentRequest;
pr->referenceId = sr->referenceId;
pr->resultSetId = sr->resultSetName;
pr->preferredRecordSyntax = sr->preferredRecordSyntax;
- *pr->numberOfRecordsRequested = *sr->mediumSetPresentNumber;
+ if (*sr->mediumSetPresentNumber < m_client->m_last_resultCount)
+ *pr->numberOfRecordsRequested = *sr->mediumSetPresentNumber;
+ else
+ *pr->numberOfRecordsRequested = m_client->m_last_resultCount;
if (sr->mediumSetElementSetNames)
{
pr->recordComposition = (Z_RecordComposition *)
return new_apdu;
}
else if (m_client->m_last_resultCount >= *sr->largeSetLowerBound ||
- m_client->m_last_resultCount == 0)
+ m_client->m_last_resultCount <= 0)
{
// large set. Return pseudo-search response immediately
- yaz_log (LOG_LOG, "Yaz_Proxy::result_set_optimize large set");
+ yaz_log (LOG_LOG, "Optimizing search for large set");
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
new_apdu->u.searchResponse->referenceId = sr->referenceId;
new_apdu->u.searchResponse->resultCount =
{
// small set
// send a present request (small set)
- yaz_log (LOG_LOG, "Yaz_Proxy::result_set_optimize small set");
+ yaz_log (LOG_LOG, "Optimizing search for small set");
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
Z_PresentRequest *pr = new_apdu->u.presentRequest;
pr->referenceId = sr->referenceId;
}
else
{
- yaz_log (LOG_LOG, "Yaz_Proxy::result_set_optimize new set");
delete m_client->m_last_query;
m_client->m_last_query = this_query;
m_client->m_last_ok = 0;
+
+ xfree (m_client->m_last_resultSetId);
+ m_client->m_last_resultSetId = xstrdup (sr->resultSetName);
+
m_client->m_last_databases.set(sr->num_databaseNames,
(const char **) sr->databaseNames);
}
return apdu;
}
+static const char *apdu_name(Z_APDU *apdu)
+{
+ switch (apdu->which)
+ {
+ case Z_APDU_initRequest:
+ return "initRequest";
+ case Z_APDU_initResponse:
+ return "initResponse";
+ case Z_APDU_searchRequest:
+ return "searchRequest";
+ case Z_APDU_searchResponse:
+ return "searchResponse";
+ case Z_APDU_presentRequest:
+ return "presentRequest";
+ case Z_APDU_presentResponse:
+ return "presentResponse";
+ }
+ return "other";
+}
+
void Yaz_Proxy::recv_Z_PDU(Z_APDU *apdu)
{
- yaz_log (LOG_LOG, "Yaz_Proxy::recv_Z_PDU");
+ yaz_log (LOG_LOG, "Receiving %s from client", apdu_name(apdu));
// Determine our client.
m_client = get_client(apdu);
if (!m_client)
{
if (m_client->m_init_flag)
{
- Z_APDU *apdu = create_Z_PDU(Z_APDU_initResponse);
+ Z_APDU *apdu = m_client->m_initResponse;
+ apdu->u.initResponse->otherInfo = 0;
if (m_client->m_cookie)
set_otherInformationString(apdu, VAL_COOKIE, 1,
m_client->m_cookie);
if (!apdu)
return;
- yaz_log (LOG_LOG, "Yaz_ProxyClient::send_Z_PDU %s",
- m_client->get_hostname());
+ yaz_log (LOG_LOG, "Sending %s to %s",
+ apdu_name(apdu), m_client->get_hostname());
// delete other info part from PDU before sending to target
Z_OtherInformation **oi;
void Yaz_Proxy::shutdown()
{
- // only keep if keep_alive flag and cookie is set...
- if (m_keepalive && m_client && m_client->m_cookie[0])
+ // only keep if keep_alive flag is set...
+ if (m_keepalive && m_client)
{
- if (m_client->m_waiting == 2)
- abort();
+ yaz_log (LOG_LOG, "shutdown (client to proxy) keepalive %s",
+ m_client->get_hostname());
+ assert (m_client->m_waiting != 2);
// Tell client (if any) that no server connection is there..
m_client->m_server = 0;
- yaz_log (LOG_LOG, "shutdown (client to proxy) keepalive %s", m_client->get_hostname());
}
else if (m_client)
{
- if (m_client->m_waiting == 2)
- abort();
- yaz_log (LOG_LOG, "shutdown (client to proxy) close %s", m_client->get_hostname());
+ yaz_log (LOG_LOG, "shutdown (client to proxy) close %s",
+ m_client->get_hostname());
+ assert (m_client->m_waiting != 2);
delete m_client;
}
else if (!m_parent)
{
yaz_log (LOG_LOG, "shutdown (client to proxy) bad state");
- abort();
+ assert (m_parent);
}
else
{
void Yaz_ProxyClient::connectNotify()
{
- yaz_log (LOG_LOG, "Yaz_ProxyClient connection accepted by %s",
- get_hostname());
+ yaz_log (LOG_LOG, "Connection accepted by %s", get_hostname());
timeout(600);
}
if (m_next)
m_next->m_prev = m_prev;
m_waiting = 2; // for debugging purposes only.
+ odr_destroy(m_init_odr);
delete m_last_query;
+ xfree (m_last_resultSetId);
}
void Yaz_Proxy::timeoutNotify()
m_prev = 0;
m_init_flag = 0;
m_last_query = 0;
+ m_last_resultSetId = 0;
m_last_resultCount = 0;
m_last_ok = 0;
m_sr_transform = 0;
m_waiting = 0;
+ m_init_odr = odr_createmem (ODR_DECODE);
+ m_initResponse = 0;
}
const char *Yaz_Proxy::option(const char *name, const char *value)
void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu)
{
m_waiting = 0;
- yaz_log (LOG_LOG, "Yaz_ProxyClient::recv_Z_PDU %s", get_hostname());
+ yaz_log (LOG_LOG, "Receiving %s from %s", apdu_name(apdu),
+ get_hostname());
+ if (apdu->which == Z_APDU_initResponse)
+ {
+ NMEM nmem = odr_extract_mem (odr_decode());
+ odr_reset (m_init_odr);
+ nmem_transfer (m_init_odr->mem, nmem);
+ m_initResponse = apdu;
+ nmem_destroy (nmem);
+ }
if (apdu->which == Z_APDU_searchResponse)
{
m_last_resultCount = *apdu->u.searchResponse->resultCount;
set_otherInformationString (apdu, VAL_COOKIE, 1, m_cookie);
if (m_server)
{
- yaz_log (LOG_LOG, "Yaz_Proxy::send_Z_PDU");
+ yaz_log (LOG_LOG, "Sending %s to client", apdu_name(apdu));
m_server->send_Z_PDU(apdu);
}
}
projects / yazpp-moved-to-github.git / blobdiff