* Copyright (c) 1998-2003, Index Data.
* See the file LICENSE for details.
*
- * $Id: yaz-proxy.cpp,v 1.50 2003-10-04 06:44:16 adam Exp $
+ * $Id: yaz-proxy.cpp,v 1.69 2003-10-23 13:59:37 adam Exp $
*/
#include <assert.h>
#include <time.h>
+#include <yaz/marcdisp.h>
+#include <yaz/yaz-iconv.h>
#include <yaz/log.h>
#include <yaz/diagbib1.h>
#include <yaz++/proxy.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 = 0;
+ m_keepalive_limit_bw = 500000;
+ m_keepalive_limit_pdu = 1000;
m_proxyTarget = 0;
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;
m_bw_max = 0;
m_pdu_max = 0;
m_max_record_retrieve = 0;
+ m_reconfig_flag = 0;
+ m_config_fname = 0;
+ m_request_no = 0;
+ m_invalid_session = 0;
+ m_config = 0;
+ m_marcxml_flag = 0;
}
Yaz_Proxy::~Yaz_Proxy()
{
- yaz_log(LOG_LOG, "%s Closed %d/%d sent/recv bytes total", m_session_str,
+ yaz_log(LOG_LOG, "%sClosed %d/%d sent/recv bytes total", m_session_str,
m_bytes_sent, m_bytes_recv);
xfree (m_proxyTarget);
xfree (m_default_target);
xfree (m_proxy_authentication);
xfree (m_optimize);
+ delete m_config;
}
int Yaz_Proxy::set_config(const char *config)
{
- int r = m_config.read_xml(config);
+ delete m_config;
+ m_config = new Yaz_ProxyConfig();
+ 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;
}
m_proxy_authentication = (char *) xstrdup (auth);
}
+Yaz_ProxyConfig *Yaz_Proxy::check_reconfigure()
+{
+ if (m_parent)
+ return m_parent->check_reconfigure();
+
+ Yaz_ProxyConfig *cfg = m_config;
+ if (m_reconfig_flag)
+ {
+ yaz_log(LOG_LOG, "reconfigure");
+ yaz_log_reopen();
+ if (m_config_fname && cfg)
+ {
+ yaz_log(LOG_LOG, "reconfigure config %s", m_config_fname);
+ 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");
+ m_reconfig_flag = 0;
+ }
+ return cfg;
+}
+
IYaz_PDU_Observer *Yaz_Proxy::sessionNotify(IYaz_PDU_Observable
*the_PDU_Observable, int fd)
{
- Yaz_Proxy *new_proxy = new Yaz_Proxy(the_PDU_Observable);
- new_proxy->m_parent = this;
- new_proxy->m_config = m_config;
+ check_reconfigure();
+ 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);
+ sprintf(new_proxy->m_session_str, "%ld:%d ", (long) time(0), m_session_no);
m_session_no++;
- yaz_log (LOG_LOG, "%s New session %s", new_proxy->m_session_str,
+ yaz_log (LOG_LOG, "%sNew session %s", new_proxy->m_session_str,
the_PDU_Observable->getpeername());
return new_proxy;
}
return 0;
}
+const char *Yaz_Proxy::load_balance(const char **url)
+{
+ int zurl_in_use[MAX_ZURL_PLEX];
+ Yaz_ProxyClient *c;
+ int i;
+
+ for (i = 0; i<MAX_ZURL_PLEX; i++)
+ zurl_in_use[i] = 0;
+ for (c = m_parent->m_clientPool; c; c = c->m_next)
+ {
+ for (i = 0; url[i]; i++)
+ if (!strcmp(url[i], c->get_hostname()))
+ zurl_in_use[i]++;
+ }
+ int min = 100000;
+ const char *ret = 0;
+ for (i = 0; url[i]; i++)
+ {
+ yaz_log(LOG_DEBUG, "%szurl=%s use=%d",
+ m_session_str, url[i], zurl_in_use[i]);
+ if (min > zurl_in_use[i])
+ {
+ ret = url[i];
+ min = zurl_in_use[i];
+ }
+ }
+ return ret;
+}
+
Yaz_ProxyClient *Yaz_Proxy::get_client(Z_APDU *apdu)
{
assert (m_parent);
if (!m_proxyTarget)
{
+ const char *url[MAX_ZURL_PLEX];
const char *proxy_host = get_proxy(oi);
+ 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;
}
-
- const char *url = 0;
int client_idletime = -1;
- m_config.get_target_info(proxy_host, &url, &m_keepalive, &m_bw_max,
+ 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);
+ &parent->m_max_clients,
+ &m_keepalive_limit_bw,
+ &m_keepalive_limit_pdu,
+ &pre_init);
+ }
if (client_idletime != -1)
{
m_client_idletime = client_idletime;
timeout(m_client_idletime);
}
- if (!url)
+ if (!url[0])
{
- yaz_log(LOG_LOG, "%s No default target", m_session_str);
+ yaz_log(LOG_LOG, "%sNo default target", m_session_str);
return 0;
}
- m_proxyTarget = (char*) xstrdup(url);
+ // we don't handle multiplexing for cookie session, so we just
+ // pick the first one in this case (anonymous users will be able
+ // to use any backend)
+ if (cookie && *cookie)
+ m_proxyTarget = (char*) xstrdup(url[0]);
+ else
+ 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->client(m_proxyTarget);
- 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->timeout(m_target_idletime);
+ // 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)
+ {
+ 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->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 %s",
+ m_session_str, c->get_hostname());
+
+ c->m_seqno = parent->m_seqno;
+ assert(c->m_server == 0);
+ c->m_server = this;
- yaz_log (LOG_LOG, "%s REUSE %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)
int min_seq = -1;
int no_of_clients = 0;
if (parent->m_clientPool)
- yaz_log (LOG_LOG, "Existing sessions");
+ yaz_log (LOG_DEBUG, "Existing sessions");
for (c = parent->m_clientPool; c; c = c->m_next)
{
- yaz_log (LOG_LOG, " Session %-3d wait=%d %s cookie=%s", c->m_seqno,
+ yaz_log (LOG_DEBUG, " Session %-3d wait=%d %s cookie=%s", c->m_seqno,
c->m_waiting, c->get_hostname(),
c->m_cookie ? c->m_cookie : "");
no_of_clients++;
c = c_min;
if (c->m_waiting || strcmp(m_proxyTarget, c->get_hostname()))
{
- yaz_log (LOG_LOG, "%s MAXCLIENTS Destroy %d",
+ yaz_log (LOG_LOG, "%sMAXCLIENTS Destroy %d",
m_session_str, c->m_seqno);
if (c->m_server && c->m_server != this)
delete c->m_server;
}
else
{
- yaz_log (LOG_LOG, "%s MAXCLIENTS Reuse %d %d %s",
+ yaz_log (LOG_LOG, "%sMAXCLIENTS Reuse %d %d %s",
m_session_str,
c->m_seqno, parent->m_seqno, c->get_hostname());
xfree (c->m_cookie);
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;
}
}
else
{
- yaz_log (LOG_LOG, "%s NEW %d %s",
+ 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;
c->m_cookie = xstrdup(cookie);
c->m_seqno = parent->m_seqno;
- c->client(m_proxyTarget);
c->m_init_flag = 0;
c->m_last_resultCount = 0;
c->m_last_ok = 0;
c->m_sr_transform = 0;
c->m_waiting = 0;
c->m_resultSetStartPoint = 0;
+ (parent->m_seqno)++;
+ if (c->client(m_proxyTarget))
+ {
+ delete c;
+ return 0;
+ }
+ c->m_target_idletime = m_target_idletime;
c->timeout(30);
- (parent->m_seqno)++;
+ 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;
Z_DiagRec *p = pp[i];
if (p->which != Z_DiagRec_defaultFormat)
{
- yaz_log(LOG_LOG, "%s Error no diagnostics", m_session_str);
+ yaz_log(LOG_LOG, "%sError no diagnostics", m_session_str);
return;
}
else
r = p->u.defaultFormat;
if (!(ent = oid_getentbyoid(r->diagnosticSetId)) ||
ent->oclass != CLASS_DIAGSET || ent->value != VAL_BIB1)
- yaz_log(LOG_LOG, "%s Error unknown diagnostic set", m_session_str);
+ yaz_log(LOG_LOG, "%sError unknown diagnostic set", m_session_str);
switch (r->which)
{
case Z_DefaultDiagFormat_v2Addinfo:
- yaz_log(LOG_LOG, "%s Error %d %s:%s",
+ yaz_log(LOG_LOG, "%sError %d %s:%s",
m_session_str,
*r->condition, diagbib1_str(*r->condition),
r->u.v2Addinfo);
break;
case Z_DefaultDiagFormat_v3Addinfo:
- yaz_log(LOG_LOG, "%s Error %d %s:%s",
+ yaz_log(LOG_LOG, "%sError %d %s:%s",
m_session_str,
*r->condition, diagbib1_str(*r->condition),
r->u.v3Addinfo);
}
}
+void Yaz_Proxy::convert_to_marcxml(Z_NamePlusRecordList *p)
+{
+ int i;
+
+ yaz_marc_t mt = yaz_marc_create();
+ yaz_marc_xml(mt, YAZ_MARC_MARCXML);
+ for (i = 0; i < p->num_records; i++)
+ {
+ Z_NamePlusRecord *npr = p->records[i];
+ if (npr->which == Z_NamePlusRecord_databaseRecord)
+ {
+ Z_External *r = npr->u.databaseRecord;
+ if (r->which == Z_External_octet)
+ {
+ int rlen;
+ char *result;
+ if (yaz_marc_decode_buf(mt, (char*) r->u.octet_aligned->buf,
+ r->u.octet_aligned->len,
+ &result, &rlen))
+ {
+ yaz_iconv_t cd = yaz_iconv_open("UTF-8", "MARC-8");
+ WRBUF wrbuf = wrbuf_alloc();
+
+ char outbuf[120];
+ size_t inbytesleft = rlen;
+ const char *inp = result;
+ while (cd && inbytesleft)
+ {
+ size_t outbytesleft = sizeof(outbuf);
+ char *outp = outbuf;
+ size_t r;
+
+ r = yaz_iconv (cd, (char**) &inp,
+ &inbytesleft,
+ &outp, &outbytesleft);
+ if (r == (size_t) (-1))
+ {
+ int e = yaz_iconv_error(cd);
+ if (e != YAZ_ICONV_E2BIG)
+ {
+ yaz_log(LOG_WARN, "conversion failure");
+ break;
+ }
+ }
+ wrbuf_write(wrbuf, outbuf, outp - outbuf);
+ }
+ if (cd)
+ yaz_iconv_close(cd);
+
+ npr->u.databaseRecord = z_ext_record(odr_encode(),
+ VAL_TEXT_XML,
+ wrbuf_buf(wrbuf),
+ wrbuf_len(wrbuf));
+ wrbuf_free(wrbuf, 1);
+ }
+ }
+ }
+ }
+ yaz_marc_destroy(mt);
+}
+
int Yaz_Proxy::send_to_client(Z_APDU *apdu)
{
int len = 0;
}
else
{
+ if (m_marcxml_flag && p && p->which == Z_Records_DBOSD)
+ convert_to_marcxml(p->u.databaseOrSurDiagnostics);
if (sr->resultCount)
- yaz_log(LOG_LOG, "%s %d hits", m_session_str,
+ {
+ yaz_log(LOG_LOG, "%s%d hits", m_session_str,
*sr->resultCount);
+ if (*sr->resultCount < 0)
+ m_invalid_session = 1;
+ }
}
}
else if (apdu->which == Z_APDU_presentResponse)
display_diagrecs(&dr_p, 1);
}
+ if (m_marcxml_flag && p && p->which == Z_Records_DBOSD)
+ convert_to_marcxml(p->u.databaseOrSurDiagnostics);
}
int r = send_Z_PDU(apdu, &len);
- yaz_log (LOG_LOG, "%s Sending %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_LOG, "%s Sending %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;
- Z_NamePlusRecordList *npr;
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 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))
{
- yaz_log (LOG_LOG, "%s Returned cache records for present request",
+ yaz_log (LOG_LOG, "%sReturned cached records for present request",
m_session_str);
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
new_apdu->u.presentResponse->referenceId = pr->referenceId;
return 0;
}
}
+#endif
}
if (apdu->which != Z_APDU_searchRequest)
this_query->set_Z_Query(sr->query);
- char query_str[80];
+ char query_str[120];
this_query->print(query_str, sizeof(query_str)-1);
- yaz_log(LOG_LOG, "%s Query %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))
if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
sr->preferredRecordSyntax, comp))
{
- yaz_log (LOG_LOG, "%s Returned cache records for medium set",
+ yaz_log (LOG_LOG, "%sReturned cached records for medium set",
m_session_str);
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
new_apdu->u.searchResponse->referenceId = sr->referenceId;
{
// medium Set
// send present request (medium size)
- yaz_log (LOG_LOG, "%s Optimizing search for medium set",
+ yaz_log (LOG_LOG, "%sOptimizing search for medium set",
m_session_str);
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
m_client->m_last_resultCount <= 0)
{
// large set. Return pseudo-search response immediately
- yaz_log (LOG_LOG, "%s Optimizing search for large set",
+ yaz_log (LOG_LOG, "%sOptimizing search for large set",
m_session_str);
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
new_apdu->u.searchResponse->referenceId = sr->referenceId;
if (m_client->m_cache.lookup (odr_encode(), &npr, 1, toget,
sr->preferredRecordSyntax, comp))
{
- yaz_log (LOG_LOG, "%s Returned cache records for small set",
+ yaz_log (LOG_LOG, "%sReturned cached records for small set",
m_session_str);
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
new_apdu->u.searchResponse->referenceId = sr->referenceId;
}
else
{
- yaz_log (LOG_LOG, "%s Optimizing search for small set",
+ yaz_log (LOG_LOG, "%sOptimizing search for small set",
m_session_str);
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentRequest);
Z_PresentRequest *pr = new_apdu->u.presentRequest;
}
}
}
- else
+ else // query doesn't match
{
delete m_client->m_last_query;
m_client->m_last_query = this_query;
void Yaz_Proxy::recv_Z_PDU(Z_APDU *apdu, int len)
{
+ char *cp = strchr(m_session_str, ' ');
+ m_request_no++;
+ if (cp)
+ sprintf(cp+1, "%d ", m_request_no);
+
int reduce = 0;
m_bytes_recv += len;
- yaz_log (LOG_LOG, "%s Receiving %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();
int bw_total = m_bw_stat.get_total();
int pdu_total = m_pdu_stat.get_total();
- yaz_log(LOG_LOG, "%s stat bw=%d pdu=%d limit-bw=%d limit-pdu=%d",
+ yaz_log(LOG_LOG, "%sstat bw=%d pdu=%d limit-bw=%d limit-pdu=%d",
m_session_str, bw_total, pdu_total, m_bw_max, m_pdu_max);
if (m_bw_max)
{
}
if (reduce)
{
- yaz_log(LOG_LOG, "%s Limit delay=%d", m_session_str, reduce);
+ yaz_log(LOG_LOG, "%sLimit delay=%d", m_session_str, reduce);
m_bw_hold_PDU = apdu; // save PDU and signal "on hold"
timeout(reduce); // call us reduce seconds later
}
if (apdu->which == Z_APDU_searchRequest)
{
Z_SearchRequest *sr = apdu->u.searchRequest;
- int err;
+ int err = 0;
char *addinfo = 0;
- err = m_config.check_query(odr_encode(), m_default_target, sr->query,
- &addinfo);
+
+ Yaz_ProxyConfig *cfg = check_reconfigure();
+ if (cfg)
+ err = cfg->check_query(odr_encode(), m_default_target,
+ sr->query, &addinfo);
if (err)
{
Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
- int *nulint = odr_intdup (odr_encode(), 0);
new_apdu->u.searchResponse->referenceId = sr->referenceId;
new_apdu->u.searchResponse->records =
create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
- new_apdu->u.searchResponse->searchStatus = nulint;
- new_apdu->u.searchResponse->resultCount = nulint;
+ *new_apdu->u.searchResponse->searchStatus = 0;
send_to_client(new_apdu);
return apdu;
}
+Z_APDU *Yaz_Proxy::handle_syntax_validation(Z_APDU *apdu)
+{
+ m_marcxml_flag = 0;
+ if (apdu->which == Z_APDU_searchRequest)
+ {
+ Z_SearchRequest *sr = apdu->u.searchRequest;
+ int err = 0;
+ char *addinfo = 0;
+ Yaz_ProxyConfig *cfg = check_reconfigure();
+
+ if (cfg)
+ err = cfg->check_syntax(odr_encode(),
+ m_default_target,
+ sr->preferredRecordSyntax,
+ &addinfo);
+ if (err == -1)
+ {
+ sr->preferredRecordSyntax =
+ yaz_oidval_to_z3950oid(odr_decode(), CLASS_RECSYN,
+ VAL_USMARC);
+ m_marcxml_flag = 1;
+ }
+ else if (err)
+ {
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_searchResponse);
+
+ new_apdu->u.searchResponse->referenceId = sr->referenceId;
+ new_apdu->u.searchResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
+ *new_apdu->u.searchResponse->searchStatus = 0;
+
+ send_to_client(new_apdu);
+
+ return 0;
+ }
+ }
+ else if (apdu->which == Z_APDU_presentRequest)
+ {
+ Z_PresentRequest *pr = apdu->u.presentRequest;
+ int err = 0;
+ char *addinfo = 0;
+ Yaz_ProxyConfig *cfg = check_reconfigure();
+
+ if (cfg)
+ err = cfg->check_syntax(odr_encode(), m_default_target,
+ pr->preferredRecordSyntax,
+ &addinfo);
+ if (err == -1)
+ {
+ pr->preferredRecordSyntax =
+ yaz_oidval_to_z3950oid(odr_decode(), CLASS_RECSYN,
+ VAL_USMARC);
+ m_marcxml_flag = 1;
+ }
+ else if (err)
+ {
+ Z_APDU *new_apdu = create_Z_PDU(Z_APDU_presentResponse);
+
+ new_apdu->u.presentResponse->referenceId = pr->referenceId;
+ new_apdu->u.presentResponse->records =
+ create_nonSurrogateDiagnostics(odr_encode(), err, addinfo);
+ *new_apdu->u.presentResponse->presentStatus =
+ Z_PresentStatus_failure;
+
+ send_to_client(new_apdu);
+
+ return 0;
+ }
+ }
+ return apdu;
+}
+
void Yaz_Proxy::recv_Z_PDU_0(Z_APDU *apdu)
{
// Determine our client.
if (apdu->which == Z_APDU_initRequest)
{
+ if (apdu->u.initRequest->implementationId)
+ yaz_log(LOG_LOG, "%simplementationId: %s",
+ m_session_str, apdu->u.initRequest->implementationId);
+ if (apdu->u.initRequest->implementationName)
+ yaz_log(LOG_LOG, "%simplementationName: %s",
+ m_session_str, apdu->u.initRequest->implementationName);
+ if (apdu->u.initRequest->implementationVersion)
+ yaz_log(LOG_LOG, "%simplementationVersion: %s",
+ m_session_str, apdu->u.initRequest->implementationVersion);
if (m_client->m_init_flag)
{
Z_APDU *apdu = m_client->m_initResponse;
handle_max_record_retrieve(apdu);
if (apdu)
+ apdu = handle_syntax_validation(apdu);
+
+ if (apdu)
apdu = handle_query_validation(apdu);
if (apdu)
void Yaz_Proxy::shutdown()
{
// only keep if keep_alive flag is set...
- if (m_keepalive && m_client && m_client->m_waiting == 0)
+ if (m_client &&
+ !m_invalid_session &&
+ m_client->m_pdu_recv < m_keepalive_limit_pdu &&
+ m_client->m_bytes_recv+m_client->m_bytes_sent < m_keepalive_limit_bw &&
+ m_client->m_waiting == 0)
{
- yaz_log (LOG_LOG, "%s Shutdown (client to proxy) keepalive %s",
+ yaz_log(LOG_LOG, "%sShutdown (client to proxy) keepalive %s",
m_session_str,
m_client->get_hostname());
+ yaz_log(LOG_LOG, "%sbw=%d pdu=%d limit-bw=%d limit-pdu=%d",
+ m_session_str, m_client->m_pdu_recv,
+ m_client->m_bytes_sent + m_client->m_bytes_recv,
+ m_keepalive_limit_bw, m_keepalive_limit_pdu);
assert (m_client->m_waiting != 2);
// Tell client (if any) that no server connection is there..
m_client->m_server = 0;
}
else if (m_client)
{
- yaz_log (LOG_LOG, "%s Shutdown (client to proxy) close %s",
+ yaz_log (LOG_LOG, "%sShutdown (client to proxy) close %s",
m_session_str,
m_client->get_hostname());
assert (m_client->m_waiting != 2);
}
else if (!m_parent)
{
- yaz_log (LOG_LOG, "%s shutdown (client to proxy) bad state",
+ yaz_log (LOG_LOG, "%sshutdown (client to proxy) bad state",
m_session_str);
assert (m_parent);
}
else
{
- yaz_log (LOG_LOG, "%s Shutdown (client to proxy)",
+ yaz_log (LOG_LOG, "%sShutdown (client to proxy)",
m_session_str);
}
+ if (m_parent)
+ m_parent->pre_init();
delete this;
}
const char *Yaz_ProxyClient::get_session_str()
{
if (!m_server)
- return "0";
+ return "0 ";
return m_server->get_session_str();
}
void Yaz_ProxyClient::shutdown()
{
- yaz_log (LOG_LOG, "%s Shutdown (proxy to target) %s", get_session_str(),
+ yaz_log (LOG_LOG, "%sShutdown (proxy to target) %s", get_session_str(),
get_hostname());
delete m_server;
delete this;
void Yaz_Proxy::failNotify()
{
- yaz_log (LOG_LOG, "%s Connection closed by client",
+ yaz_log (LOG_LOG, "%sConnection closed by client",
get_session_str());
shutdown();
}
void Yaz_ProxyClient::failNotify()
{
- yaz_log (LOG_LOG, "%s Connection closed by target %s",
+ yaz_log (LOG_LOG, "%sConnection closed by target %s",
get_session_str(), get_hostname());
shutdown();
}
void Yaz_ProxyClient::connectNotify()
{
- yaz_log (LOG_LOG, "%s Connection 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, "%spre-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, "%s Timeout (client to proxy)", m_session_str);
- shutdown();
+ timeout(600);
+ pre_init();
}
}
void Yaz_ProxyClient::timeoutNotify()
{
- yaz_log (LOG_LOG, "%s Timeout (proxy to target) %s", get_session_str(),
+ 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_initResponse = 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)
void Yaz_ProxyClient::recv_Z_PDU(Z_APDU *apdu, int len)
{
m_bytes_recv += len;
+ m_pdu_recv++;
m_waiting = 0;
- yaz_log (LOG_LOG, "%s Receiving %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();
}
}
+
+int Yaz_Proxy::server(const char *addr)
+{
+ int r = Yaz_Z_Assoc::server(addr);
+ if (!r)
+ {
+ yaz_log(LOG_LOG, "%sStarted listener on %s", m_session_str, addr);
+ timeout(1);
+ }
+ return r;
+}
+
projects / yazpp-moved-to-github.git / blobdiff