+yf::SRUtoZ3950::Frontend::Frontend() : m_in_use(true)
+{
+}
+
+yf::SRUtoZ3950::Frontend::~Frontend()
+{
+}
+
+
+yf::SRUtoZ3950::FrontendPtr yf::SRUtoZ3950::Impl::get_frontend(
+ mp::Package &package)
+{
+ boost::mutex::scoped_lock lock(m_mutex_session);
+
+ std::map<mp::Session,yf::SRUtoZ3950::FrontendPtr>::iterator it;
+
+ while (true)
+ {
+ it = m_clients.find(package.session());
+ if (it == m_clients.end())
+ break;
+
+ if (!it->second->m_in_use)
+ {
+ it->second->m_in_use = true;
+ return it->second;
+ }
+ m_cond_session_ready.wait(lock);
+ }
+ FrontendPtr f(new Frontend);
+ m_clients[package.session()] = f;
+ f->m_in_use = true;
+ return f;
+}
+
+void yf::SRUtoZ3950::Impl::release_frontend(mp::Package &package)
+{
+ boost::mutex::scoped_lock lock(m_mutex_session);
+ std::map<mp::Session,FrontendPtr>::iterator it;
+
+ it = m_clients.find(package.session());
+ if (it != m_clients.end())
+ {
+ if (package.session().is_closed())
+ {
+ m_clients.erase(it);
+ }
+ else
+ {
+ it->second->m_in_use = false;
+ }
+ m_cond_session_ready.notify_all();
+ }
+}
+
+void yf::SRUtoZ3950::Impl::process(mp::Package &package)
+{
+ FrontendPtr f = get_frontend(package);
+
+ Z_GDU *zgdu_req = package.request().get();
+
+ if (zgdu_req && zgdu_req->which == Z_GDU_HTTP_Request)
+ {
+ if (zgdu_req->u.HTTP_Request->content_len == 0)
+ {
+ const char *path = zgdu_req->u.HTTP_Request->path;
+ boost::mutex::scoped_lock lock(m_url_mutex);
+ while (1)
+ {
+ ActiveUrlMap::iterator it = m_active_urls.find(path);
+ if (it == m_active_urls.end())
+ {
+ m_active_urls[path] = 1;
+ break;
+ }
+ yaz_log(YLOG_LOG, "Waiting for %s to complete", path);
+ m_cond_url_ready.wait(lock);
+ }
+ }
+ sru(package, zgdu_req);
+ if (zgdu_req && zgdu_req->u.HTTP_Request->content_len == 0)
+ {
+ const char *path = zgdu_req->u.HTTP_Request->path;
+ boost::mutex::scoped_lock lock(m_url_mutex);
+
+ ActiveUrlMap::iterator it = m_active_urls.find(path);
+
+ m_active_urls.erase(it);
+ m_cond_url_ready.notify_all();
+ }
+ }
+ else
+ {
+ package.move();
+ }
+ release_frontend(package);
+}