How to use org.jboss.windup.graph.renderer.dot

@Override
public void writeGraph(OutputStream os) throws IOException {
  writeDot(os);
}

public VizJSHtmlWriter(Graph graph) {
  this.writer = new DotWriter(graph, "G", "qualifiedName", DotGraphType.DIGRAPH, "8pt");
}

private void writeDot(OutputStream os) throws IOException {
  writeGraphTag(os);
}

private void writeGraphTag(OutputStream os) throws IOException {
  String name = this.getDotSafeName(graphName);
  IOUtils.write(graphType.getName()+" "+name+"{" + DotConstants.NL, os);
  
  writeGraphNodes(os);
  writeGraphEdges(os);
  
  IOUtils.write("}", os);
}

private void writeGraphEdge(String label, String source, String target, OutputStream os) throws IOException {
  final String startTag = getDotSafeName(source) + graphType.getEdge() + getDotSafeName(target);
  final String endTag = DotConstants.END_LINE;
  
  IOUtils.write(startTag, os);
  
  if(StringUtils.isNotBlank(label)) {
    writeOptions(os, new String[] {"label", label}, new String[]{"fontsize", fontSize});
  }
  
  IOUtils.write(endTag, os);
  
}

private void writeGraphNode(String id, String label, OutputStream os) throws IOException {
  final String tag = DotConstants.INDENT + getDotSafeName(id) + "[label = \""+label+"\", fontsize = \""+fontSize+"\"]" + DotConstants.END_LINE;
  IOUtils.write(tag, os);
}

private void writeOptions(OutputStream os, String[]... options) throws IOException {
  Map<String, String> map = new HashMap<String, String>();
  for(String[] option : options) {
    String key = option[0];
    String value = option[1];
    map.put(key, value);
    
  }
  writeOptions(map, os);
}

private void writeGraphEdges(OutputStream os) throws IOException {
  for(Edge edge : graph.getEdges()) {
    String label = edge.getLabel();
    String source = ""+edge.getVertex(Direction.IN).getId().hashCode();
    String target = ""+edge.getVertex(Direction.OUT).getId().hashCode();
    writeGraphEdge(label, source, target, os);
  }
}

private void writeGraphNodes(OutputStream os) throws IOException {
  //iterate the nodes.
  for(Vertex vertex : graph.getVertices()) {
    String id = ""+vertex.getId().hashCode();
    String label = vertex.getProperty(vertexLabelProperty);
    
    if(StringUtils.isBlank(label)) {
      label = vertex.toString();
    }
    writeGraphNode(id, label, os);
  }
  
}

  @Override
  public void writeGraph(OutputStream os) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    super.writeGraph(baos);

    try {
      StringBuilder builder = new StringBuilder();
      builder.append(IOUtils.toString(this.getClass().getClassLoader().getResourceAsStream("vizjs/viz.js")));
      builder.append("var result = new Viz(dotGraph);");
      
      String script = builder.toString();
      ScriptEngine engine =  new ScriptEngineManager().getEngineByName("JavaScript");
      Compilable compilingEngine = (Compilable) engine;
      CompiledScript cscript = compilingEngine.compile(script);

      //Bindings bindings = cscript.getEngine().createBindings();
      Bindings bindings = engine.getBindings(ScriptContext.ENGINE_SCOPE);
      for(Map.Entry me : bindings.entrySet()) {
        System.out.printf("%s: %s\n",me.getKey(),String.valueOf(me.getValue()));
      }
      bindings.put("dotGraph", baos.toString());
      //cscript.eval();
      Object result = cscript.eval(bindings);
      LOG.info("Result:" +ReflectionToStringBuilder.toString(result));
    } catch (Exception e) {
      throw new IOException("Exception generating graph.", e);
    }
  }
}

private void writeGraphTag(OutputStream os) throws IOException {
  String name = this.getDotSafeName(graphName);
  IOUtils.write(graphType.getName()+" "+name+"{" + DotConstants.NL, os);
  
  writeGraphNodes(os);
  writeGraphEdges(os);
  
  IOUtils.write("}", os);
}

private void writeGraphEdge(String label, String source, String target, OutputStream os) throws IOException {
  final String startTag = getDotSafeName(source) + graphType.getEdge() + getDotSafeName(target);
  final String endTag = DotConstants.END_LINE;
  
  IOUtils.write(startTag, os);
  
  if(StringUtils.isNotBlank(label)) {
    writeOptions(os, new String[] {"label", label}, new String[]{"fontsize", fontSize});
  }
  
  IOUtils.write(endTag, os);
  
}

@Override
public void writeGraph(OutputStream os) throws IOException {
  writeDot(os);
}

public VizJSHtmlWriter(Graph graph) {
  this.writer = new DotWriter(graph, "G", "qualifiedName", DotGraphType.DIGRAPH, "8pt");
}

private void writeDot(OutputStream os) throws IOException {
  writeGraphTag(os);
}

private void writeGraphNode(String id, String label, OutputStream os) throws IOException {
  final String tag = DotConstants.INDENT + getDotSafeName(id) + "[label = \""+label+"\", fontsize = \""+fontSize+"\"]" + DotConstants.END_LINE;
  IOUtils.write(tag, os);
}

private void writeOptions(OutputStream os, String[]... options) throws IOException {
  Map<String, String> map = new HashMap<String, String>();
  for(String[] option : options) {
    String key = option[0];
    String value = option[1];
    map.put(key, value);
    
  }
  writeOptions(map, os);
}

private void writeGraphEdges(OutputStream os) throws IOException {
  for(Edge edge : graph.getEdges()) {
    String label = edge.getLabel();
    String source = ""+edge.getVertex(Direction.IN).getId().hashCode();
    String target = ""+edge.getVertex(Direction.OUT).getId().hashCode();
    writeGraphEdge(label, source, target, os);
  }
}

private void writeGraphNodes(OutputStream os) throws IOException {
  //iterate the nodes.
  for(Vertex vertex : graph.getVertices()) {
    String id = ""+vertex.getId().hashCode();
    String label = vertex.getProperty(vertexLabelProperty);
    
    if(StringUtils.isBlank(label)) {
      label = vertex.toString();
    }
    writeGraphNode(id, label, os);
  }
  
}

  @Override
  public void writeGraph(OutputStream os) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    super.writeGraph(baos);

    try {
      StringBuilder builder = new StringBuilder();
      builder.append(IOUtils.toString(this.getClass().getClassLoader().getResourceAsStream("vizjs/viz.js")));
      builder.append("var result = new Viz(dotGraph);");
      
      String script = builder.toString();
      ScriptEngine engine =  new ScriptEngineManager().getEngineByName("JavaScript");
      Compilable compilingEngine = (Compilable) engine;
      CompiledScript cscript = compilingEngine.compile(script);

      //Bindings bindings = cscript.getEngine().createBindings();
      Bindings bindings = engine.getBindings(ScriptContext.ENGINE_SCOPE);
      for(Map.Entry me : bindings.entrySet()) {
        System.out.printf("%s: %s\n",me.getKey(),String.valueOf(me.getValue()));
      }
      bindings.put("dotGraph", baos.toString());
      //cscript.eval();
      Object result = cscript.eval(bindings);
      LOG.info("Result:" +ReflectionToStringBuilder.toString(result));
    } catch (Exception e) {
      throw new IOException("Exception generating graph.", e);
    }
  }
}