X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Ffilter_frontend_net.cpp;h=3fe53672dfada8c4ae36e54fcddd5a1ab3306973;hb=86b2928564b2701c34518f48244b830cc4647d7f;hp=b9526c5ad8a68f138c68afdd840fbe90b515c6bb;hpb=069d404cfe3b0d51d1b49edf57cdb3cec180afee;p=metaproxy-moved-to-github.git

diff --git a/src/filter_frontend_net.cpp b/src/filter_frontend_net.cpp
index b9526c5..3fe5367 100644
--- a/src/filter_frontend_net.cpp
+++ b/src/filter_frontend_net.cpp
@@ -1,5 +1,5 @@
 /* This file is part of Metaproxy.
-   Copyright (C) 2005-2012 Index Data
+   Copyright (C) Index Data
 
 Metaproxy 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
@@ -18,6 +18,9 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 #include "config.hpp"
 
+#if HAVE_GETRLIMIT
+#include <sys/resource.h>
+#endif
 #include <sstream>
 #include <iomanip>
 #include <metaproxy/util.hpp>
@@ -32,7 +35,9 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #include <yazpp/limit-connect.h>
 #include <yaz/timing.h>
 #include <yaz/log.h>
+#include <yaz/daemon.h>
 #include "gduutil.hpp"
+#include <signal.h>
 
 #include <iostream>
 
@@ -46,24 +51,31 @@ namespace metaproxy_1 {
             friend class FrontendNet;
             std::string port;
             std::string route;
+            std::string cert_fname;
+            int max_recv_bytes;
         };
         class FrontendNet::Rep {
             friend class FrontendNet;
 
             int m_no_threads;
+            int m_max_threads;
+            int m_stack_size;
             std::vector<Port> m_ports;
             int m_listen_duration;
             int m_session_timeout;
             int m_connect_max;
+            int m_http_req_max;
             std::string m_msg_config;
             std::string m_stat_req;
             yazpp_1::SocketManager mySocketManager;
             ZAssocServer **az;
+            yazpp_1::PDU_Assoc **pdu;
             int m_duration_freq[22];
             double m_duration_lim[22];
             double m_duration_max;
             double m_duration_min;
             double m_duration_total;
+            int m_stop_signo;
         public:
             Rep();
             ~Rep();
@@ -84,10 +96,11 @@ namespace metaproxy_1 {
             ZAssocChild(yazpp_1::IPDU_Observable *the_PDU_Observable,
                         mp::ThreadPoolSocketObserver *m_thread_pool_observer,
                         const mp::Package *package,
-                        std::string route,
-                        Rep *rep);
+                        Port *port,
+                        Rep *rep,
+                        yazpp_1::LimitConnect &limit_connect);
             int m_no_requests;
-            std::string m_route;
+            Port *m_port;
         private:
             yazpp_1::IPDU_Observer* sessionNotify(
                 yazpp_1::IPDU_Observable *the_PDU_Observable,
@@ -104,6 +117,7 @@ namespace metaproxy_1 {
             bool m_delete_flag;
             const mp::Package *m_package;
             Rep *m_p;
+            yazpp_1::LimitConnect &m_limit_connect;
         };
         class FrontendNet::ThreadPoolPackage : public mp::IThreadPoolMsg {
         public:
@@ -119,12 +133,12 @@ namespace metaproxy_1 {
             ZAssocChild *m_assoc_child;
             mp::Package *m_package;
             Rep *m_p;
-        }; 
+        };
         class FrontendNet::ZAssocServer : public yazpp_1::Z_Assoc {
         public:
             ~ZAssocServer();
             ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable,
-                         std::string route,
+                         FrontendNet::Port *port,
                          Rep *rep);
             void set_package(const mp::Package *package);
             void set_thread_pool(ThreadPoolSocketObserver *observer);
@@ -133,7 +147,7 @@ namespace metaproxy_1 {
                 yazpp_1::IPDU_Observable *the_PDU_Observable,
                 int fd);
             void recv_GDU(Z_GDU *apdu, int len);
-            
+
             void failNotify();
             void timeoutNotify();
             void connectNotify();
@@ -141,7 +155,7 @@ namespace metaproxy_1 {
             mp::ThreadPoolSocketObserver *m_thread_pool_observer;
             const mp::Package *m_package;
             yazpp_1::LimitConnect limit_connect;
-            std::string m_route;
+            Port *m_port;
             Rep *m_p;
         };
     }
@@ -181,7 +195,7 @@ void yf::FrontendNet::ThreadPoolPackage::result(const char *t_info)
 
         yaz_timing_stop(timer);
         double duration = yaz_timing_get_real(timer);
-        
+
         size_t ent = 0;
         while (m_p->m_duration_lim[ent] != 0.0 && duration > m_p->m_duration_lim[ent])
             ent++;
@@ -191,24 +205,24 @@ void yf::FrontendNet::ThreadPoolPackage::result(const char *t_info)
 
         if (m_p->m_duration_max < duration)
             m_p->m_duration_max = duration;
-          
+
         if (m_p->m_duration_min == 0.0 || m_p->m_duration_min > duration)
             m_p->m_duration_min = duration;
-            
+
         if (m_p->m_msg_config.length())
         {
             Z_GDU *z_gdu = gdu->get();
-            
+
             std::ostringstream os;
             os  << m_p->m_msg_config << " "
                 << *m_package << " "
                 << std::fixed << std::setprecision (6) << duration << " ";
-            
-            if (z_gdu) 
+
+            if (z_gdu)
                 os << *z_gdu;
             else
                 os << "-";
-            
+
             yaz_log(YLOG_LOG, "%s %s", os.str().c_str(), t_info);
         }
     }
@@ -224,7 +238,7 @@ void yf::FrontendNet::ThreadPoolPackage::result(const char *t_info)
             mp::odr odr;
             int len;
             Z_APDU *apdu_response = odr.create_close(
-                z_gdu->u.z3950, Z_Close_systemProblem, 
+                z_gdu->u.z3950, Z_Close_systemProblem,
                 "unhandled Z39.50 request");
 
             m_assoc_child->send_Z_PDU(apdu_response, &len);
@@ -234,8 +248,8 @@ void yf::FrontendNet::ThreadPoolPackage::result(const char *t_info)
             // For HTTP, respond with Server Error
             int len;
             mp::odr odr;
-            Z_GDU *zgdu_res 
-                = odr.create_HTTP_Response(m_package->session(), 
+            Z_GDU *zgdu_res
+                = odr.create_HTTP_Response(m_package->session(),
                                            z_gdu->u.HTTP_Request, 500);
             m_assoc_child->send_GDU(zgdu_res, &len);
         }
@@ -246,14 +260,14 @@ void yf::FrontendNet::ThreadPoolPackage::result(const char *t_info)
     {
         m_assoc_child->close();
     }
-    
+
 
     delete this;
 }
 
-mp::IThreadPoolMsg *yf::FrontendNet::ThreadPoolPackage::handle() 
+mp::IThreadPoolMsg *yf::FrontendNet::ThreadPoolPackage::handle()
 {
-    m_package->move(m_assoc_child->m_route);
+    m_package->move(m_assoc_child->m_port->route);
     return this;
 }
 
@@ -261,18 +275,29 @@ yf::FrontendNet::ZAssocChild::ZAssocChild(
     yazpp_1::IPDU_Observable *PDU_Observable,
     mp::ThreadPoolSocketObserver *my_thread_pool,
     const mp::Package *package,
-    std::string route, Rep *rep)
-    :  Z_Assoc(PDU_Observable), m_p(rep)
+    Port *port, Rep *rep,
+    yazpp_1::LimitConnect &limit_connect)
+    :  Z_Assoc(PDU_Observable), m_p(rep), m_limit_connect(limit_connect)
 {
     m_thread_pool_observer = my_thread_pool;
     m_no_requests = 0;
     m_delete_flag = false;
     m_package = package;
-    m_route = route;
+    m_port = port;
     const char *peername = PDU_Observable->getpeername();
     if (!peername)
         peername = "unknown";
-    m_origin.set_tcpip_address(std::string(peername), m_session.id());
+    else
+    {
+        const char *cp = strchr(peername, ':');
+        if (cp)
+            peername = cp + 1;
+    }
+    std::string addr;
+    addr.append(peername);
+    addr.append(" ");
+    addr.append(port->port);
+    m_origin.set_tcpip_address(addr, m_session.id());
     timeout(m_p->m_session_timeout);
 }
 
@@ -289,20 +314,20 @@ yf::FrontendNet::ZAssocChild::~ZAssocChild()
 void yf::FrontendNet::ZAssocChild::report(Z_HTTP_Request *hreq)
 {
     mp::odr o;
-    
+
     Z_GDU *gdu_res = o.create_HTTP_Response(m_session, hreq, 200);
-    
+
     Z_HTTP_Response *hres = gdu_res->u.HTTP_Response;
-    
+
     mp::wrbuf w;
     size_t i;
     int number_total = 0;
-    
+
     for (i = 0; m_p->m_duration_lim[i] != 0.0; i++)
         number_total += m_p->m_duration_freq[i];
     number_total += m_p->m_duration_freq[i];
-    
-    wrbuf_puts(w, "<?xml version=\"1.0\">\n");
+
+    wrbuf_puts(w, "<?xml version=\"1.0\"?>\n");
     wrbuf_puts(w, "<frontend_net>\n");
     wrbuf_printf(w, "  <responses frequency=\"%d\">\n", number_total);
     for (i = 0; m_p->m_duration_lim[i] != 0.0; i++)
@@ -314,7 +339,7 @@ void yf::FrontendNet::ZAssocChild::report(Z_HTTP_Request *hreq)
                 i > 0 ? m_p->m_duration_lim[i - 1] : 0.0,
                 m_p->m_duration_lim[i], m_p->m_duration_freq[i]);
     }
-    
+
     if (m_p->m_duration_freq[i] > 0)
         wrbuf_printf(
             w, "    <response duration_start=\"%f\" frequency=\"%d\"/>\n",
@@ -332,13 +357,21 @@ void yf::FrontendNet::ZAssocChild::report(Z_HTTP_Request *hreq)
         wrbuf_printf(
             w, "    <response duration_average=\"%f\"/>\n",
             m_p->m_duration_total / number_total);
-       
+
     wrbuf_puts(w, " </responses>\n");
+
+    int thread_busy;
+    int thread_total;
+    m_thread_pool_observer->get_thread_info(thread_busy, thread_total);
+
+    wrbuf_printf(w, " <thread_info busy=\"%d\" total=\"%d\"/>\n",
+                 thread_busy, thread_total);
+
     wrbuf_puts(w, "</frontend_net>\n");
-    
+
     hres->content_len = w.len();
     hres->content_buf = (char *) w.buf();
-    
+
     int len;
     send_GDU(gdu_res, &len);
 }
@@ -353,12 +386,30 @@ void yf::FrontendNet::ZAssocChild::recv_GDU(Z_GDU *z_pdu, int len)
     {
         Z_HTTP_Request *hreq = z_pdu->u.HTTP_Request;
 
+        const char *f = z_HTTP_header_lookup(hreq->headers, "X-Forwarded-For");
+        if (f)
+            p->origin().set_tcpip_address(std::string(f), m_session.id());
+
         if (m_p->m_stat_req.length()
             && !strcmp(hreq->path, m_p->m_stat_req.c_str()))
         {
             report(hreq);
             return;
         }
+        std::string peername = p->origin().get_address();
+
+        m_limit_connect.add_connect(peername.c_str());
+        m_limit_connect.cleanup(false);
+        int con_sz = m_limit_connect.get_total(peername.c_str());
+
+        if (m_p->m_http_req_max && con_sz >= m_p->m_http_req_max)
+        {
+            mp::odr o;
+            Z_GDU *gdu_res = o.create_HTTP_Response(m_session, hreq, 500);
+            int len;
+            send_GDU(gdu_res, &len);
+            return;
+        }
     }
 
     ThreadPoolPackage *tp = new ThreadPoolPackage(p, this, m_p);
@@ -367,17 +418,17 @@ void yf::FrontendNet::ZAssocChild::recv_GDU(Z_GDU *z_pdu, int len)
 
     if (m_p->m_msg_config.length())
     {
-        if (z_pdu)          
+        if (z_pdu)
         {
             std::ostringstream os;
             os  << m_p->m_msg_config << " "
                 << *p << " "
-                << "0.000000" << " " 
+                << "0.000000" << " "
                 << *z_pdu;
             yaz_log(YLOG_LOG, "%s", os.str().c_str());
         }
     }
-    m_thread_pool_observer->put(tp);  
+    m_thread_pool_observer->put(tp);
 }
 
 void yf::FrontendNet::ZAssocChild::failNotify()
@@ -413,10 +464,10 @@ void yf::FrontendNet::ZAssocChild::connectNotify()
 
 yf::FrontendNet::ZAssocServer::ZAssocServer(
     yazpp_1::IPDU_Observable *PDU_Observable,
-    std::string route,
+    Port *port,
     Rep *rep)
-    : 
-    Z_Assoc(PDU_Observable), m_route(route), m_p(rep)
+    :
+    Z_Assoc(PDU_Observable), m_port(port), m_p(rep)
 {
     m_package = 0;
 }
@@ -428,7 +479,7 @@ void yf::FrontendNet::ZAssocServer::set_package(const mp::Package *package)
 }
 
 void yf::FrontendNet::ZAssocServer::set_thread_pool(
-    ThreadPoolSocketObserver *observer)
+    mp::ThreadPoolSocketObserver *observer)
 {
     m_thread_pool_observer = observer;
 }
@@ -448,7 +499,7 @@ yazpp_1::IPDU_Observer *yf::FrontendNet::ZAssocServer::sessionNotify(
     }
     ZAssocChild *my = new ZAssocChild(the_PDU_Observable,
                                       m_thread_pool_observer,
-                                      m_package, m_route, m_p);
+                                      m_package, m_port, m_p, limit_connect);
     return my;
 }
 
@@ -478,10 +529,12 @@ yf::FrontendNet::FrontendNet() : m_p(new Rep)
 
 yf::FrontendNet::Rep::Rep()
 {
-    m_no_threads = 5;
+    m_max_threads = m_no_threads = 5;
+    m_stack_size = 0;
     m_listen_duration = 0;
     m_session_timeout = 300; // 5 minutes
     m_connect_max = 0;
+    m_http_req_max = 0;
     az = 0;
     size_t i;
     for (i = 0; i < 22; i++)
@@ -511,6 +564,7 @@ yf::FrontendNet::Rep::Rep()
     m_duration_max = 0.0;
     m_duration_min = 0.0;
     m_duration_total = 0.0;
+    m_stop_signo = 0;
 }
 
 yf::FrontendNet::Rep::~Rep()
@@ -521,6 +575,7 @@ yf::FrontendNet::Rep::~Rep()
         for (i = 0; i < m_ports.size(); i++)
             delete az[i];
         delete [] az;
+        delete [] pdu;
     }
     az = 0;
 }
@@ -529,14 +584,19 @@ yf::FrontendNet::~FrontendNet()
 {
 }
 
-void yf::FrontendNet::stop() const
+void yf::FrontendNet::stop(int signo) const
 {
-    if (m_p->az)
-    {
-        size_t i;
-        for (i = 0; i < m_p->m_ports.size(); i++)
-            m_p->az[i]->server("");
-    }
+    m_p->m_stop_signo = signo;
+}
+
+void yf::FrontendNet::start() const
+{
+#if HAVE_GETRLIMIT
+    struct rlimit limit_data;
+    getrlimit(RLIMIT_NOFILE, &limit_data);
+    yaz_log(YLOG_LOG, "getrlimit NOFILE cur=%ld max=%ld",
+            (long) limit_data.rlim_cur, (long) limit_data.rlim_max);
+#endif
 }
 
 bool yf::FrontendNet::My_Timer_Thread::timeout()
@@ -546,7 +606,7 @@ bool yf::FrontendNet::My_Timer_Thread::timeout()
 
 yf::FrontendNet::My_Timer_Thread::My_Timer_Thread(
     yazpp_1::ISocketObservable *obs,
-    int duration) : 
+    int duration) :
     m_obs(obs), m_pipe(9123), m_timeout(false)
 {
     obs->addObserver(m_pipe.read_fd(), this);
@@ -560,7 +620,7 @@ void yf::FrontendNet::My_Timer_Thread::socketNotify(int event)
     m_obs->deleteObserver(this);
 }
 
-void yf::FrontendNet::process(Package &package) const
+void yf::FrontendNet::process(mp::Package &package) const
 {
     if (m_p->az == 0)
         return;
@@ -570,8 +630,10 @@ void yf::FrontendNet::process(Package &package) const
     if (m_p->m_listen_duration)
         tt = new My_Timer_Thread(&m_p->mySocketManager,
                                  m_p->m_listen_duration);
-    
-    ThreadPoolSocketObserver tp(&m_p->mySocketManager, m_p->m_no_threads);
+
+    ThreadPoolSocketObserver tp(&m_p->mySocketManager, m_p->m_no_threads,
+                                m_p->m_max_threads,
+                                m_p->m_stack_size);
 
     for (i = 0; i<m_p->m_ports.size(); i++)
     {
@@ -580,6 +642,35 @@ void yf::FrontendNet::process(Package &package) const
     }
     while (m_p->mySocketManager.processEvent() > 0)
     {
+        if (m_p->m_stop_signo == SIGTERM)
+        {
+            yaz_log(YLOG_LOG, "metaproxy received SIGTERM");
+            if (m_p->az)
+            {
+                size_t i;
+                for (i = 0; i < m_p->m_ports.size(); i++)
+                {
+                    m_p->pdu[i]->shutdown();
+                    m_p->az[i]->server("");
+                }
+                yaz_daemon_stop();
+            }
+            break; /* stop right away */
+        }
+#ifndef WIN32
+        if (m_p->m_stop_signo == SIGUSR1)
+        {    /* just stop listeners and cont till all sessions are done*/
+            yaz_log(YLOG_LOG, "metaproxy received SIGUSR1");
+            m_p->m_stop_signo = 0;
+            if (m_p->az)
+            {
+                size_t i;
+                for (i = 0; i < m_p->m_ports.size(); i++)
+                    m_p->az[i]->server("");
+                yaz_daemon_stop();
+            }
+        }
+#endif
         int no = m_p->mySocketManager.getNumberOfObservers();
         if (no <= 1)
             break;
@@ -604,31 +695,57 @@ void yf::FrontendNet::configure(const xmlNode * ptr, bool test_only,
         if (!strcmp((const char *) ptr->name, "port"))
         {
             Port port;
-            const struct _xmlAttr *attr;
-            for (attr = ptr->properties; attr; attr = attr->next)
-            {
-                if (!strcmp((const char *) attr->name, "route"))
-                    port.route = mp::xml::get_text(attr);
-            }
-            port.port = mp::xml::get_text(ptr);
+
+            const char *names[5] = {"route", "max_recv_bytes", "port",
+                                    "cert_fname", 0};
+            std::string values[4];
+
+            mp::xml::parse_attr(ptr, names, values);
+            port.route = values[0];
+            if (values[1].length() > 0)
+                port.max_recv_bytes = atoi(values[1].c_str());
+            else
+                port.max_recv_bytes = 0;
+            if (values[2].length() > 0)
+                port.port = values[2];
+            else
+                port.port = mp::xml::get_text(ptr);
+            port.cert_fname = values[3];
             ports.push_back(port);
-            
         }
         else if (!strcmp((const char *) ptr->name, "threads"))
         {
             std::string threads_str = mp::xml::get_text(ptr);
             int threads = atoi(threads_str.c_str());
             if (threads < 1)
-                throw yf::FilterException("Bad value for threads: " 
+                throw yf::FilterException("Bad value for threads: "
                                                    + threads_str);
             m_p->m_no_threads = threads;
         }
+        else if (!strcmp((const char *) ptr->name, "max-threads"))
+        {
+            std::string threads_str = mp::xml::get_text(ptr);
+            int threads = atoi(threads_str.c_str());
+            if (threads < 1)
+                throw yf::FilterException("Bad value for max-threads: "
+                                                   + threads_str);
+            m_p->m_max_threads = threads;
+        }
+        else if (!strcmp((const char *) ptr->name, "stack-size"))
+        {
+            std::string sz_str = mp::xml::get_text(ptr);
+            int sz = atoi(sz_str.c_str());
+            if (sz < 0)
+                throw yf::FilterException("Bad value for stack-size: "
+                                                   + sz_str);
+            m_p->m_stack_size = sz * 1024;
+        }
         else if (!strcmp((const char *) ptr->name, "timeout"))
         {
             std::string timeout_str = mp::xml::get_text(ptr);
             int timeout = atoi(timeout_str.c_str());
             if (timeout < 1)
-                throw yf::FilterException("Bad value for timeout: " 
+                throw yf::FilterException("Bad value for timeout: "
                                                    + timeout_str);
             m_p->m_session_timeout = timeout;
         }
@@ -636,6 +753,10 @@ void yf::FrontendNet::configure(const xmlNode * ptr, bool test_only,
         {
             m_p->m_connect_max = mp::xml::get_int(ptr, 0);
         }
+        else if (!strcmp((const char *) ptr->name, "http-req-max"))
+        {
+            m_p->m_http_req_max = mp::xml::get_int(ptr, 0);
+        }
         else if (!strcmp((const char *) ptr->name, "message"))
         {
             m_p->m_msg_config = mp::xml::get_text(ptr);
@@ -646,7 +767,7 @@ void yf::FrontendNet::configure(const xmlNode * ptr, bool test_only,
         }
         else
         {
-            throw yf::FilterException("Bad element " 
+            throw yf::FilterException("Bad element "
                                       + std::string((const char *)
                                                     ptr->name));
         }
@@ -676,24 +797,35 @@ void yf::FrontendNet::set_ports(std::vector<std::string> &ports)
 void yf::FrontendNet::set_ports(std::vector<Port> &ports)
 {
     m_p->m_ports = ports;
-    
+
     m_p->az = new yf::FrontendNet::ZAssocServer *[m_p->m_ports.size()];
-    
+    m_p->pdu = new yazpp_1::PDU_Assoc *[m_p->m_ports.size()];
+
     // Create yf::FrontendNet::ZAssocServer for each port
     size_t i;
-    for (i = 0; i<m_p->m_ports.size(); i++)
+    for (i = 0; i < m_p->m_ports.size(); i++)
+        m_p->az[i] = 0;
+    for (i = 0; i < m_p->m_ports.size(); i++)
     {
         // create a PDU assoc object (one per yf::FrontendNet::ZAssocServer)
         yazpp_1::PDU_Assoc *as = new yazpp_1::PDU_Assoc(&m_p->mySocketManager);
-        
+
+        if (m_p->m_ports[i].cert_fname.length())
+            as->set_cert_fname(m_p->m_ports[i].cert_fname.c_str());
         // create ZAssoc with PDU Assoc
+        m_p->pdu[i] = as;
         m_p->az[i] = new yf::FrontendNet::ZAssocServer(
-            as, m_p->m_ports[i].route, m_p.get());
+            as, &m_p->m_ports[i], m_p.get());
         if (m_p->az[i]->server(m_p->m_ports[i].port.c_str()))
         {
-            throw yf::FilterException("Unable to bind to address " 
+            throw yf::FilterException("Unable to bind to address "
                                       + std::string(m_p->m_ports[i].port));
         }
+        COMSTACK cs = as->get_comstack();
+
+        if (cs && m_p->m_ports[i].max_recv_bytes)
+            cs_set_max_recv_bytes(cs, m_p->m_ports[i].max_recv_bytes);
+
     }
 }