/* This file is part of Metaproxy.
- Copyright (C) 2005-2009 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
*/
#include "config.hpp"
-#include "session.hpp"
-#include "package.hpp"
-#include "filter.hpp"
+#include <metaproxy/package.hpp>
+#include <metaproxy/filter.hpp>
#include "filter_load_balance.hpp"
-#include "util.hpp"
+#include <metaproxy/util.hpp>
#include <boost/thread/mutex.hpp>
#undef max
#endif
-//#include <iostream>
#include <list>
#include <map>
#include <limits>
void process(metaproxy_1::Package & package);
void configure(const xmlNode * ptr);
private:
- // statistic manipulating functions,
+ // statistic manipulating functions,
void add_dead(unsigned long session_id);
//void clear_dead(unsigned long session_id);
void add_package(unsigned long session_id);
}
// define Pimpl wrapper forwarding to Impl
-
+
yf::LoadBalance::LoadBalance() : m_p(new Impl)
{
}
{ // must have a destructor because of boost::scoped_ptr
}
-void yf::LoadBalance::configure(const xmlNode *xmlnode, bool test_only)
+void yf::LoadBalance::configure(const xmlNode *xmlnode, bool test_only,
+ const char *path)
{
m_p->configure(xmlnode);
}
}
yf::LoadBalance::Impl::~Impl()
-{
+{
}
void yf::LoadBalance::Impl::configure(const xmlNode *xmlnode)
void yf::LoadBalance::Impl::process(mp::Package &package)
{
bool is_closed_front = false;
-
+
// checking for closed front end packages
if (package.session().is_closed())
{
is_closed_front = true;
- }
+ }
Z_GDU *gdu_req = package.request().get();
// they turn out to be bad..
while (1)
{
- std::string target;
std::list<std::string>::iterator ivh = vhosts.begin();
+ std::list<std::string>::iterator ivh_pick = vhosts.end();
Package init_pkg(package.session(), package.origin());
init_pkg.copy_filter(package);
unsigned int cost = std::numeric_limits<unsigned int>::max();
- {
+ {
boost::mutex::scoped_lock scoped_lock(m_mutex);
-
- for (; ivh != vhosts.end(); )
+
+ for (; ivh != vhosts.end(); ivh++)
{
if ((*ivh).size() != 0)
{
- unsigned int vhcost
+ unsigned int vhcost
= yf::LoadBalance::Impl::cost(*ivh);
yaz_log(YLOG_LOG, "Consider %s cost=%u vhcost=%u",
(*ivh).c_str(), cost, vhcost);
if (cost > vhcost)
{
+ ivh_pick = ivh;
cost = vhcost;
- target = *ivh;
- ivh = vhosts.erase(ivh);
}
- else
- ivh++;
}
- else
- ivh++;
}
}
- if (target.length() == 0)
+ if (ivh_pick == vhosts.end())
break;
+ std::string target = *ivh_pick;
+ vhosts.erase(ivh_pick);
// copying new target into init package
-
yazpp_1::GDU init_gdu(base_req);
Z_InitRequest *init_req = init_gdu.get()->u.z3950->u.initRequest;
-
- mp::util::set_vhost_otherinfo(&(init_req->otherInfo),
+
+ mp::util::set_vhost_otherinfo(&(init_req->otherInfo),
odr_en, target, 1);
-
+
init_pkg.request() = init_gdu;
-
- // moving all package types
+
+ // moving all package types
init_pkg.move();
-
+
// checking for closed back end packages
if (!init_pkg.session().is_closed())
{
else if (gdu_req->u.z3950->which == Z_APDU_close)
{
is_closed_front = true;
- boost::mutex::scoped_lock scoped_lock(m_mutex);
+ boost::mutex::scoped_lock scoped_lock(m_mutex);
add_package(package.session().id());
- }
+ }
// any other Z39.50 package is added to statistics
else
{
- boost::mutex::scoped_lock scoped_lock(m_mutex);
+ boost::mutex::scoped_lock scoped_lock(m_mutex);
add_package(package.session().id());
}
}
- // moving all package types
+ // moving all package types
package.move();
bool is_closed_back = false;
is_closed_back = true;
boost::mutex::scoped_lock scoped_lock(m_mutex);
remove_package(package.session().id());
- }
+ }
// any other Z39.50 package is removed from statistics
else
{
{
boost::mutex::scoped_lock scoped_lock(m_mutex);
- // marking backend dead if backend closed without fronted close
+ // marking backend dead if backend closed without fronted close
if (is_closed_front == false)
add_dead(package.session().id());
package.session().close();
}
}
-
-// statistic manipulating functions,
+
+// statistic manipulating functions,
void yf::LoadBalance::Impl::add_dead(unsigned long session_id)
{
std::string target = find_session_target(session_id);
if (target.size() != 0)
{
- std::map<std::string, TargetStat>::iterator itarg;
+ std::map<std::string, TargetStat>::iterator itarg;
itarg = m_target_stat.find(target);
if (itarg != m_target_stat.end()
&& itarg->second.deads < std::numeric_limits<unsigned int>::max())
{
itarg->second.deads += 1;
- // std:.cout << "add_dead " << session_id << " " << target
+ // std:.cout << "add_dead " << session_id << " " << target
// << " d:" << itarg->second.deads << "\n";
}
}
if (target.size() != 0)
{
- std::map<std::string, TargetStat>::iterator itarg;
+ std::map<std::string, TargetStat>::iterator itarg;
itarg = m_target_stat.find(target);
if (itarg != m_target_stat.end()
- && itarg->second.packages
+ && itarg->second.packages
< std::numeric_limits<unsigned int>::max())
{
itarg->second.packages += 1;
if (target.size() != 0)
{
- std::map<std::string, TargetStat>::iterator itarg;
+ std::map<std::string, TargetStat>::iterator itarg;
itarg = m_target_stat.find(target);
if (itarg != m_target_stat.end()
&& itarg->second.packages > 0)
}
}
-void yf::LoadBalance::Impl::add_session(unsigned long session_id,
+void yf::LoadBalance::Impl::add_session(unsigned long session_id,
std::string target)
{
// finding and adding session
stat.packages = 0;
stat.deads = 0;
m_target_stat.insert(std::make_pair(target, stat));
- }
+ }
else if (itarg->second.sessions < std::numeric_limits<unsigned int>::max())
{
itarg->second.sessions += 1;
m_session_target.erase(isess);
return;
}
-
+
// counting session down
if (itarg->second.sessions > 0)
itarg->second.sessions -= 1;
if (target.size() != 0)
{
- std::map<std::string, TargetStat>::iterator itarg;
+ std::map<std::string, TargetStat>::iterator itarg;
itarg = m_target_stat.find(target);
if (itarg != m_target_stat.end())
cost = itarg->second.cost();
if (target.size() != 0)
{
- std::map<std::string, TargetStat>::iterator itarg;
+ std::map<std::string, TargetStat>::iterator itarg;
itarg = m_target_stat.find(target);
if (itarg != m_target_stat.end())
dead = itarg->second.deads;
projects / metaproxy-moved-to-github.git / blobdiff