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The Core Camel Java DSL based router
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.view;
import java.io.PrintWriter;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.camel.model.FromDefinition;
import org.apache.camel.model.MulticastDefinition;
import org.apache.camel.model.ProcessorDefinition;
import org.apache.camel.model.RouteDefinition;
import static org.apache.camel.util.ObjectHelper.isNotEmpty;
/**
* A DOT file creator plugin which
* creates a DOT file showing the current routes
*
* @version
*/
@Deprecated
public class RouteDotGenerator extends GraphGeneratorSupport {
public RouteDotGenerator(String dir) {
super(dir, ".dot");
}
// Implementation methods
//-------------------------------------------------------------------------
protected void printRoutes(PrintWriter writer, Map> map) {
Set>> entries = map.entrySet();
for (Map.Entry> entry : entries) {
String group = entry.getKey();
printRoutes(writer, group, entry.getValue());
}
}
protected void printRoutes(PrintWriter writer, String group, List routes) {
if (group != null) {
writer.println("subgraph cluster_" + (clusterCounter++) + " {");
writer.println("label = \"" + group + "\";");
writer.println("color = grey;");
writer.println("style = \"dashed\";");
writer.println("URL = \"" + group + ".html\";");
writer.println();
}
for (RouteDefinition route : routes) {
List inputs = route.getInputs();
for (FromDefinition input : inputs) {
printRoute(writer, route, input);
}
writer.println();
}
if (group != null) {
writer.println("}");
writer.println();
}
}
protected void printRoute(PrintWriter writer, final RouteDefinition route, FromDefinition input) {
NodeData nodeData = getNodeData(input);
printNode(writer, nodeData);
NodeData from = nodeData;
for (ProcessorDefinition output : route.getOutputs()) {
NodeData newData = printNode(writer, from, output);
from = newData;
}
}
protected NodeData printNode(PrintWriter writer, NodeData fromData, ProcessorDefinition node) {
if (node instanceof MulticastDefinition) {
// no need for a multicast or interceptor node
List> outputs = node.getOutputs();
boolean isPipeline = isPipeline(node);
for (ProcessorDefinition output : outputs) {
NodeData out = printNode(writer, fromData, output);
// if in pipeline then we should move the from node to the next in the pipeline
if (isPipeline) {
fromData = out;
}
}
return fromData;
}
NodeData toData = getNodeData(node);
printNode(writer, toData);
if (fromData != null) {
writer.print(fromData.id);
writer.print(" -> ");
writer.print(toData.id);
writer.println(" [");
String label = fromData.edgeLabel;
if (isNotEmpty(label)) {
writer.println("label = \"" + label + "\"");
}
writer.println("];");
}
// now lets write any children
List> outputs = toData.outputs;
if (outputs != null) {
for (ProcessorDefinition output : outputs) {
NodeData newData = printNode(writer, toData, output);
if (!isMulticastNode(node)) {
toData = newData;
}
}
}
return toData;
}
protected void printNode(PrintWriter writer, NodeData data) {
if (!data.nodeWritten) {
data.nodeWritten = true;
writer.println();
writer.print(data.id);
writer.println(" [");
writer.println("label = \"" + data.label + "\"");
writer.println("tooltip = \"" + data.tooltop + "\"");
if (data.url != null) {
writer.println("URL = \"" + data.url + "\"");
}
String image = data.image;
if (image != null) {
writer.println("shapefile = \"" + image + "\"");
writer.println("peripheries=0");
}
String shape = data.shape;
if (shape == null && image != null) {
shape = "custom";
}
if (shape != null) {
writer.println("shape = \"" + shape + "\"");
}
writer.println("];");
writer.println();
}
}
protected void generateFile(PrintWriter writer, Map> map) {
writer.println("digraph CamelRoutes {");
writer.println();
writer.println("node [style = \"rounded,filled\", fillcolor = yellow, "
+ "fontname=\"Helvetica-Oblique\"];");
writer.println();
printRoutes(writer, map);
writer.println("}");
}
}