Implement basic graphviz networkmap. #252

lib/extension/networkMap.js

@@ -14,6 +14,7 @@ class NetworkMap {
         // Set supported formats
         this.supportedFormats = {
             'raw': this.raw,
+            'graphviz': this.graphviz,
         };
     }
 
@@ -33,6 +34,18 @@ class NetworkMap {
     raw(topology) {
         return JSON.stringify(topology);
     }
+
+    graphviz(topology) {
+        let text = 'digraph G {\n';
+        topology.forEach((item) => {
+            text += `  "${item.ieeeAddr}" [label="${item.ieeeAddr} (${item.status})"];\n`;
+            text += `  "${item.ieeeAddr}" -> "${item.parent}" [label="${item.lqi}"]\n`;
+        });
+
+        text += '}';
+
+        return text;
+    }
 }
 
 module.exports = NetworkMap;