use new signal node-type to simplify demo setup

docker-compose.yml

@@ -61,22 +61,7 @@ services:
   node:
     image: villas/node:latest
     privileged: true
-    command: node /etc/villas/node/websocket.conf
-    expose:
-      - "12000/udp"
-    ports:
-      - "8081:80/tcp"
-    volumes:
-      - "./etc/node/:/etc/villas/node/"
-    networks:
-      villas:
-
-  # Generate random data and send it via UDP to the 'node' service
-  signal:
-    image: villas/node:latest
-    privileged: true
-    entrypoint: bash
-    command: -c 'villas signal mixed -v4 | villas pipe -x /etc/villas/node/websocket.conf udp_1'
+    command: node /etc/villas/node/websocket-demo.conf
     volumes:
       - "./etc/node/:/etc/villas/node/"
     networks:

etc/node/websocket-demo.conf

@@ -0,0 +1,60 @@
+/** Example configuration file for VILLASnode.
+ *
+ * The syntax of this file is similar to JSON.
+ * A detailed description of the format can be found here:
+ *   http://www.hyperrealm.com/libconfig/libconfig_manual.html#Configuration-Files
+ *
+ * @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
+ * @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
+ * @license GNU General Public License (version 3)
+ *
+ * VILLASnode
+ *
+ * This program 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 3 of the License, or
+ * any later version.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *********************************************************************************/
+
+nodes = {
+	sig_1 = {
+		type = "signal",
+		
+		signal = "mixed",
+		values = 4,
+		rate = 25
+	},
+	ws_1 = {
+		type = "websocket",
+		description = "Demo Channel",
+		vectorize = 10,
+		source = {
+			simulator = "OP5600",
+			location = "ACS lab"
+		},
+		series = (
+			{ label = "Random walk", unit = "V" },
+			{ label = "Sine",        unit = "A" },
+			{ label = "Rect",        unit = "Var"},
+			{ label = "Ramp",        unit = "°C" }
+		)
+	}
+};
+
+############       List of paths       ############
+
+paths = (
+	{
+		in = "sig_1",
+		out = "ws_1",
+		reverse = false
+	}
+);