Addition of global Makefile

First example external module, testroute, has been added. This serves more as an example than a real router
Updated module loading to used fixed GetModuleObject route and addition of ModuleInit routine

modules/routing/testroute.c

@@ -0,0 +1,107 @@
+/*
+ * This file is distributed as part of the SkySQL Gateway.  It 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,
+ * version 2.
+ *
+ * This program 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright SkySQL Ab 2013
+ */
+#include <stdio.h>
+#include <router.h>
+
+static char *version_str = "V1.0.0";
+
+static	ROUTER	*createInstance(SERVICE *service);
+static	void	*newSession(ROUTER *instance, SESSION *session);
+static	void 	closeSession(ROUTER *instance, SESSION *session);
+static	int	routeQuery(ROUTER *instance, SESSION *session, GWBUF *queue);
+
+static ROUTER_OBJECT MyObject = { createInstance, newSession, closeSession, routeQuery };
+
+/*
+ * Implementation of the mandatory version entry point
+ *
+ * @return version string of the module
+ */
+char *
+version()
+{
+	return version_str;
+}
+
+/*
+ * The module initialisation routine, called when the module
+ * is first loaded.
+ */
+void
+ModuleInit()
+{
+	fprintf(stderr, "Initial test router module.\n");
+}
+
+/*
+ * The module entry point routine. It is this routine that
+ * must populate the structure that is referred to as the
+ * "module object", this is a structure with the set of
+ * external entry points for this module.
+ *
+ * @return The module object
+ */
+ROUTER_OBJECT *
+GetModuleObject()
+{
+	fprintf(stderr, "Returing test router module object.\n");
+	return &MyObject;
+}
+
+/*
+ * Create an instance of the router for a particular service
+ * within the gateway.
+ * 
+ * @param service	The service this router is being create for
+ *
+ * @return The instance data for this new instance
+ */
+static	ROUTER	*
+createInstance(SERVICE *service)
+{
+}
+
+/*
+ * Associate a new session with this instance of the router.
+ *
+ * @param instance	The router instance data
+ * @param session	The session itself
+ * @return Session specific data for this session
+ */
+static	void	*
+newSession(ROUTER *instance, SESSION *session)
+{
+}
+
+/*
+ * Close a session with the router, this is the mechanism
+ * by which a router may cleanup data structure etc.
+ *
+ * @param instance	The router instance data
+ * @param session	The session being closed
+ */
+static	void 	
+closeSession(ROUTER *instance, SESSION *session)
+{
+}
+
+
+static	int	
+routeQuery(ROUTER *instance, SESSION *session, GWBUF *queue)
+{
+}