X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Frouter_flexml.cpp;h=54232de4682896b5563e3bed92b54f47094914cc;hb=9fcdfa67cc281509e0f11e1f2aba255718a80cbd;hp=914868e7b15a58465360704d8aa93ac325fe01b4;hpb=c859210e9c315c0f15c93fc6f65477a6c3e65d14;p=metaproxy-moved-to-github.git

diff --git a/src/router_flexml.cpp b/src/router_flexml.cpp
index 914868e..54232de 100644
--- a/src/router_flexml.cpp
+++ b/src/router_flexml.cpp
@@ -1,19 +1,541 @@
-/* $Id: router_flexml.cpp,v 1.1 2005-10-26 14:12:00 marc Exp $
-   Copyright (c) 2005, Index Data.
+/* This file is part of Metaproxy.
+   Copyright (C) Index Data
 
-%LICENSE%
- */
+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
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
 
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
 
+#include "config.hpp"
+#include <metaproxy/xmlutil.hpp>
+#include <string.h>
 #include "router_flexml.hpp"
+#include "factory_filter.hpp"
+#include "factory_static.hpp"
+
+#include <iostream>
+#include <map>
+#include <list>
+#include <yaz/log.h>
+#include <yaz/xml_include.h>
+
+#include <boost/shared_ptr.hpp>
+
+#include <libxml/xmlversion.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+
+namespace mp = metaproxy_1;
+
+namespace metaproxy_1 {
+    class RouterFleXML::Route {
+        friend class RouterFleXML::Rep;
+        friend class RouterFleXML::Pos;
+        friend class RouterFleXML;
+        std::list<boost::shared_ptr<const mp::filter::Base> > m_list;
+    };
+    class RouterFleXML::Rep {
+        friend class RouterFleXML;
+        friend class RouterFleXML::Pos;
+        Rep();
+
+        void base(xmlDocPtr doc, mp::FactoryFilter &factory, bool test_only,
+                  const char *file_include_path);
+
+        typedef std::map<std::string,
+                         boost::shared_ptr<const mp::filter::Base > >
+                         IdFilterMap ;
+
+        IdFilterMap m_id_filter_map;
+
+        std::map<std::string,RouterFleXML::Route> m_routes;
+
+        std::string m_start_route;
+
+        std::string m_dl_path;
+
+        void parse_xml_config_dom(xmlDocPtr doc, bool test_only,
+                                  const char *file_include_path);
+
+        void parse_xml_filters(xmlDocPtr doc, const xmlNode *node,
+                               bool test_only, const char *file_include_path);
+        void parse_xml_filters1(xmlDocPtr doc, const xmlNode *node,
+                                bool test_only, const char *file_include_path,
+                                Route &route);
+        void parse_xml_routes(xmlDocPtr doc, const xmlNode *node,
+                              bool test_only, const char *file_include_path);
+        void check_routes_in_filters(const xmlNode *n);
+
+        bool m_xinclude;
+    private:
+        FactoryFilter *m_factory; // TODO shared_ptr
+    };
+
+    class RouterFleXML::Pos : public RoutePos {
+    public:
+        virtual const filter::Base *move(const char *route);
+        virtual RoutePos *clone();
+        virtual ~Pos();
+        mp::RouterFleXML::Rep *m_p;
+
+        std::map<std::string,
+                 RouterFleXML::Route>::iterator m_route_it;
+        std::list<boost::shared_ptr <const mp::filter::Base> >::iterator m_filter_it;
+    };
+}
+
+void mp::RouterFleXML::Rep::parse_xml_filters(xmlDocPtr doc,
+                                              const xmlNode *node,
+                                              bool test_only,
+                                              const char *file_include_path)
+{
+    unsigned int filter_nr = 0;
+    while (node && mp::xml::check_element_mp(node, "filter"))
+    {
+        filter_nr++;
+
+        const struct _xmlAttr *attr;
+        std::string id_value;
+        std::string type_value;
+        for (attr = node->properties; attr; attr = attr->next)
+        {
+            std::string name = std::string((const char *) attr->name);
+            std::string value;
+
+            if (attr->children && attr->children->type == XML_TEXT_NODE)
+                value = std::string((const char *)attr->children->content);
+
+            if (name == "id")
+                id_value = value;
+            else if (name == "type")
+                type_value = value;
+            else if (name == "base")
+                ;// Ignore XInclude base attribute.
+            else
+                throw mp::XMLError("Only attribute id or type allowed"
+                                    " in filter element. Got " + name);
+        }
+
+        if (!m_factory->exist(type_value))
+        {
+            yaz_log(YLOG_LOG, "Loading %s (dlpath %s)",
+                    type_value.c_str(), m_dl_path.c_str());
+            m_factory->add_creator_dl(type_value, m_dl_path);
+        }
+        boost::shared_ptr<mp::filter::Base> fb(m_factory->create(type_value));
+
+        fb->configure(node, test_only, file_include_path);
+
+        if (m_id_filter_map.find(id_value) != m_id_filter_map.end())
+            throw mp::XMLError("Filter " + id_value + " already defined");
+
+        m_id_filter_map[id_value] = fb;
+
+        node = mp::xml::jump_to_next(node, XML_ELEMENT_NODE);
+    }
+}
+
+void mp::RouterFleXML::Rep::parse_xml_filters1(xmlDocPtr doc,
+                                              const xmlNode *node,
+                                              bool test_only,
+                                              const char *file_include_path,
+                                              Route &route)
+{
+    while (node)
+    {
+        if (mp::xml::is_element_mp(node, "filters"))
+        {
+            const xmlNode* node1 =
+                mp::xml::jump_to_children(node, XML_ELEMENT_NODE);
+
+            parse_xml_filters1(doc, node1, test_only, file_include_path, route);
+        }
+        else if (mp::xml::check_element_mp(node, "filter"))
+        {
+            const struct _xmlAttr *attr;
+            std::string refid_value;
+            std::string type_value;
+            for (attr = node->properties; attr; attr = attr->next)
+            {
+                std::string name = std::string((const char *) attr->name);
+                std::string value;
+
+                if (attr->children && attr->children->type == XML_TEXT_NODE)
+                    value = std::string((const char *)attr->children->content);
+
+                if (name == "refid")
+                    refid_value = value;
+                else if (name == "type")
+                    type_value = value;
+                else if (name == "base")
+                    ;// Ignore XInclude base attribute.
+                else
+                    throw mp::XMLError("Only attribute 'refid' or 'type'"
+                                       " allowed for element 'filter'."
+                                       " Got " + name);
+            }
+            if (refid_value.length())
+            {
+                std::map<std::string,
+                         boost::shared_ptr<const mp::filter::Base > >::iterator it;
+                it = m_id_filter_map.find(refid_value);
+                if (it == m_id_filter_map.end())
+                    throw mp::XMLError("Unknown filter refid "
+                                       + refid_value);
+                else
+                    route.m_list.push_back(it->second);
+            }
+            else if (type_value.length())
+            {
+                if (!m_factory->exist(type_value))
+                {
+                    yaz_log(YLOG_LOG, "Loading %s (dlpath %s)",
+                            type_value.c_str(), m_dl_path.c_str());
+                    m_factory->add_creator_dl(type_value, m_dl_path);
+                }
+                mp::filter::Base* filter_base = m_factory->create(type_value);
+
+                filter_base->configure(node, test_only, file_include_path);
+
+                route.m_list.push_back(
+                    boost::shared_ptr<mp::filter::Base>(filter_base));
+            }
+
+        }
+        node = mp::xml::jump_to_next(node, XML_ELEMENT_NODE);
+    }
+}
+
+
+void mp::RouterFleXML::Rep::parse_xml_routes(xmlDocPtr doc,
+                                             const xmlNode *node,
+                                             bool test_only,
+                                             const char *file_include_path)
+{
+    mp::xml::check_element_mp(node, "route");
+
+    unsigned int route_nr = 0;
+    while (mp::xml::is_element_mp(node, "route"))
+    {
+        route_nr++;
+
+        const struct _xmlAttr *attr;
+        std::string id_value;
+        for (attr = node->properties; attr; attr = attr->next)
+        {
+            std::string name = std::string((const char *) attr->name);
+            std::string value;
+
+            if (attr->children && attr->children->type == XML_TEXT_NODE)
+                value = std::string((const char *)attr->children->content);
+
+            if (name == "id")
+                id_value = value;
+            else if (name == "base")
+                ;// Ignore XInclude base attribute.
+            else
+                throw mp::XMLError("Only attribute 'id' allowed for"
+                                    " element 'route'."
+                                    " Got " + name);
+        }
+
+        Route route;
 
+        // process <filter> / <filters> nodes in third level
+        const xmlNode* node3 = mp::xml::jump_to_children(node, XML_ELEMENT_NODE);
+
+
+
+        parse_xml_filters1(doc, node3, test_only, file_include_path, route);
+
+        std::map<std::string,RouterFleXML::Route>::iterator it;
+        it = m_routes.find(id_value);
+        if (it != m_routes.end())
+            throw mp::XMLError("Route id='" + id_value
+                                + "' already exist");
+        else
+            m_routes[id_value] = route;
+        node = mp::xml::jump_to_next(node, XML_ELEMENT_NODE);
+    }
+}
+
+void mp::RouterFleXML::Rep::check_routes_in_filters(const xmlNode *node)
+{
+    while (node)
+    {
+        if (mp::xml::is_element_mp(node, "filters"))
+        {
+            const xmlNode *n =
+                mp::xml::jump_to_children(node, XML_ELEMENT_NODE);
+            check_routes_in_filters(n);
+        }
+        else if (mp::xml::is_element_mp(node, "filter"))
+        {
+            const xmlNode *n =
+                mp::xml::jump_to_children(node, XML_ELEMENT_NODE);
+            while (n)
+            {
+                const struct _xmlAttr *attr;
+                // we assume thar that route attribute is only at one level
+                // below filter.. At least that works for multi and virt_db.
+                for (attr = n->properties; attr; attr = attr->next)
+                {
+                    if (!strcmp((const char *) attr->name, "route"))
+                    {
+                        std::string value;
+
+                        if (attr->children && attr->children->type == XML_TEXT_NODE)
+                            value = std::string((const char *)attr->children->content);
+
+                        std::map<std::string,RouterFleXML::Route>::iterator it;
+                        it = m_routes.find(value);
+                        if (it == m_routes.end())
+                        {
+                            throw mp::XMLError("Route '" + value + "' does not exist");
+                        }
+                    }
+                }
+                n = mp::xml::jump_to_next(n, XML_ELEMENT_NODE);
+            }
+        }
+        node = mp::xml::jump_to_next(node, XML_ELEMENT_NODE);
+    }
+}
+
+void mp::RouterFleXML::Rep::parse_xml_config_dom(xmlDocPtr doc,
+                                                 bool test_only,
+                                                 const char *file_include_path)
+{
+    if (!doc)
+        throw mp::XMLError("Empty XML Document");
+
+    const xmlNode* root = xmlDocGetRootElement(doc);
+
+    if (file_include_path)
+    {
+        int r = yaz_xml_include_glob((xmlNode *) root, file_include_path,
+            YAZ_FILE_GLOB_FAIL_NOTEXIST);
+        if (r)
+            throw mp::XMLError("YAZ XML Include failed");
+    }
+
+    mp::xml::check_element_mp(root,  "metaproxy");
+
+    const xmlNode* node = mp::xml::jump_to_children(root, XML_ELEMENT_NODE);
+
+    if (mp::xml::is_element_mp(node, "dlpath"))
+    {
+        m_dl_path = mp::xml::get_text(node);
+        node = mp::xml::jump_to_next(node, XML_ELEMENT_NODE);
+    }
+    // process <start> node which is expected first element node
+    if (mp::xml::check_element_mp(node, "start"))
+    {
+        const struct _xmlAttr *attr;
+        for (attr = node->properties; attr; attr = attr->next)
+        {
+            std::string name = std::string((const char *) attr->name);
+            std::string value;
+
+            if (attr->children && attr->children->type == XML_TEXT_NODE)
+                value = std::string((const char *)attr->children->content);
+
+            if (name == "route")
+                m_start_route = value;
+            else if (name == "base")
+                ;// Ignore XInclude base attribute.
+            else
+                throw mp::XMLError("Only attribute route allowed"
+                                    " in element 'start'. Got " + name);
+        }
+        node = mp::xml::jump_to_next(node, XML_ELEMENT_NODE);
+    }
+    // process <filters> node if given
+    if (mp::xml::is_element_mp(node, "filters"))
+    {
+        parse_xml_filters(doc, mp::xml::jump_to_children(node,
+                                                         XML_ELEMENT_NODE),
+                          test_only, file_include_path);
+
+        node = mp::xml::jump_to_next(node, XML_ELEMENT_NODE);
+    }
+    // process <routes> node which is expected third element node
+    mp::xml::check_element_mp(node, "routes");
+
+    parse_xml_routes(doc, mp::xml::jump_to_children(node, XML_ELEMENT_NODE),
+                     test_only, file_include_path);
+
+    node = mp::xml::jump_to_next(node, XML_ELEMENT_NODE);
+    if (node)
+    {
+        throw mp::XMLError("Unexpected element "
+                            + std::string((const char *)node->name));
+    }
+
+    node = mp::xml::jump_to_children(root, XML_ELEMENT_NODE);
+    while (node)
+    {
+        if (mp::xml::is_element_mp(node, "filters"))
+            check_routes_in_filters(
+                mp::xml::jump_to_children(node,
+                                          XML_ELEMENT_NODE));
+        else if (mp::xml::is_element_mp(node, "routes"))
+        {
+            const xmlNode* n = mp::xml::jump_to_children(node,
+                                                         XML_ELEMENT_NODE);
+            while (n)
+            {
+                if (mp::xml::is_element_mp(n, "route"))
+                {
+                    check_routes_in_filters(
+                        mp::xml::jump_to_children(n, XML_ELEMENT_NODE));
+
+                }
+                n = mp::xml::jump_to_next(n, XML_ELEMENT_NODE);
+            }
+        }
+        node = mp::xml::jump_to_next(node, XML_ELEMENT_NODE);
+    }
+}
+
+mp::RouterFleXML::Rep::Rep() : m_xinclude(false)
+{
+}
+
+void mp::RouterFleXML::Rep::base(xmlDocPtr doc, mp::FactoryFilter &factory,
+                                 bool test_only, const char *file_include_path)
+{
+    m_factory = &factory;
+    parse_xml_config_dom(doc, test_only, file_include_path);
+    m_start_route = "start";
+}
+
+mp::RouterFleXML::RouterFleXML(xmlDocPtr doc, mp::FactoryFilter &factory,
+                               bool test_only, const char *file_include_path)
+    : m_p(new Rep)
+{
+    m_p->base(doc, factory, test_only, file_include_path);
+}
+
+mp::RouterFleXML::RouterFleXML(std::string xmlconf, mp::FactoryFilter &factory,
+    bool test_only)
+    : m_p(new Rep)
+{
+    xmlDocPtr doc = xmlParseMemory(xmlconf.c_str(),
+                                   xmlconf.size());
+    if (!doc)
+        throw mp::XMLError("xmlParseMemory failed");
+    else
+    {
+        m_p->base(doc, factory, test_only, 0);
+        xmlFreeDoc(doc);
+    }
+}
+
+mp::RouterFleXML::~RouterFleXML()
+{
+}
+
+const mp::filter::Base *mp::RouterFleXML::Pos::move(const char *route)
+{
+    if (route && *route)
+    {
+        //std::cout << "move to " << route << "\n";
+        m_route_it = m_p->m_routes.find(route);
+        if (m_route_it == m_p->m_routes.end())
+        {
+            std::cout << "no such route " << route << "\n";
+            throw mp::XMLError("bad route " + std::string(route));
+        }
+        m_filter_it = m_route_it->second.m_list.begin();
+    }
+    if (m_filter_it == m_route_it->second.m_list.end())
+        return 0;
+    const mp::filter::Base *f = (*m_filter_it).get();
+    m_filter_it++;
+    return f;
+}
+
+mp::RoutePos *mp::RouterFleXML::createpos() const
+{
+    mp::RouterFleXML::Pos *p = new mp::RouterFleXML::Pos;
+
+    p->m_route_it = m_p->m_routes.find(m_p->m_start_route);
+    if (p->m_route_it == m_p->m_routes.end())
+    {
+        delete p;
+        return 0;
+    }
+    p->m_filter_it = p->m_route_it->second.m_list.begin();
+    p->m_p = m_p.get();
+    return p;
+}
+
+mp::RoutePos *mp::RouterFleXML::Pos::clone()
+{
+    mp::RouterFleXML::Pos *p = new mp::RouterFleXML::Pos;
+    p->m_filter_it = m_filter_it;
+    p->m_route_it = m_route_it;
+    p->m_p = m_p;
+    return p;
+}
+
+mp::RouterFleXML::Pos::~Pos()
+{
+}
+
+
+void mp::RouterFleXML::start()
+{
+    std::map<std::string,RouterFleXML::Route>::iterator route_it;
+
+    route_it = m_p->m_routes.begin();
+    while (route_it != m_p->m_routes.end())
+    {
+        RouterFleXML::Route route = route_it->second;
+
+        std::list<boost::shared_ptr<const mp::filter::Base> >::iterator it;
+
+        for (it = route.m_list.begin(); it != route.m_list.end(); it++)
+            (*it)->start();
+        route_it++;
+    }
+}
+
+void mp::RouterFleXML::stop(int signo)
+{
+    std::map<std::string,RouterFleXML::Route>::iterator route_it;
+
+    route_it = m_p->m_routes.begin();
+    while (route_it != m_p->m_routes.end())
+    {
+        RouterFleXML::Route route = route_it->second;
+
+        std::list<boost::shared_ptr<const mp::filter::Base> >::iterator it;
+
+        for (it = route.m_list.begin(); it != route.m_list.end(); it++)
+            (*it)->stop(signo);
+        route_it++;
+    }
+}
 
 
 /*
  * Local variables:
  * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
  * indent-tabs-mode: nil
- * c-file-style: "stroustrup"
  * End:
  * vim: shiftwidth=4 tabstop=8 expandtab
  */
+