move files into modules

state_machine_exporter_spring_based/src/main/java/click/kamil/SpringExporter.java

@@ -0,0 +1,180 @@
+package click.kamil.springstatemachineexporter.springbased;
+
+import click.kamil.examples.statemachine.simple.OrderEvents;
+import click.kamil.examples.statemachine.simple.OrderStates;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.ApplicationArguments;
+import org.springframework.boot.ApplicationRunner;
+import org.springframework.statemachine.StateMachine;
+import org.springframework.statemachine.config.StateMachineFactory;
+import org.springframework.statemachine.state.PseudoStateKind;
+import org.springframework.statemachine.state.State;
+import org.springframework.statemachine.transition.Transition;
+import org.springframework.stereotype.Component;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+import java.io.File;
+import java.io.PrintWriter;
+
+public class SpringExporter {
+}
+
+@Component
+@Slf4j
+@RequiredArgsConstructor
+class Runner implements ApplicationRunner {
+
+    private final DotExporter dotExporter;
+    private final PlantUmlExporter plantUmlExporter;
+    private final ScxmlExporter scxmlExporter;
+
+    @Override
+    public void run(ApplicationArguments args) throws Exception {
+        dotExporter.export("stateMachine.dot");
+        plantUmlExporter.export("stateMachine.uml.dot");
+        scxmlExporter.export("stateMachine.scxml.xml");
+    }
+}
+
+abstract class BaseExporter {
+
+    protected final StateMachineFactory<OrderStates, OrderEvents> factory;
+
+    protected BaseExporter(@Qualifier("simpleEnumStateMachineFactory") StateMachineFactory<OrderStates, OrderEvents> factory) {
+        this.factory = factory;
+    }
+
+    abstract void export(String name) throws Exception;
+
+    protected StateMachine<OrderStates, OrderEvents> createStateMachine() {
+        return factory.getStateMachine("order");
+    }
+}
+
+@Component
+class DotExporter extends BaseExporter {
+
+    public DotExporter(@Qualifier("simpleEnumStateMachineFactory") StateMachineFactory<OrderStates, OrderEvents> factory) {
+        super(factory);
+    }
+
+    @Override
+    public void export(String filename) throws Exception {
+        try (PrintWriter writer = new PrintWriter(filename)) {
+            StateMachine<OrderStates, OrderEvents> machine = createStateMachine();
+            writer.println("digraph stateMachine {");
+
+            for (State<OrderStates, OrderEvents> state : machine.getStates()) {
+                writer.printf("    %s;%n", state.getId());
+            }
+
+            for (Transition<OrderStates, OrderEvents> transition : machine.getTransitions()) {
+                if (transition.getSource() != null && transition.getTarget() != null) {
+                    writer.printf("    %s -> %s [label=\"%s\"];%n",
+                            transition.getSource().getId(),
+                            transition.getTarget().getId(),
+                            transition.getTrigger() != null ? transition.getTrigger().getEvent() : "");
+                }
+            }
+
+            writer.println("}");
+        }
+    }
+}
+
+@Component
+class PlantUmlExporter extends BaseExporter {
+
+    public PlantUmlExporter(@Qualifier("simpleEnumStateMachineFactory") StateMachineFactory<OrderStates, OrderEvents> factory) {
+        super(factory);
+    }
+
+    @Override
+    public void export(String filename) throws Exception {
+        try (PrintWriter writer = new PrintWriter(filename)) {
+            StateMachine<OrderStates, OrderEvents> machine = createStateMachine();
+            writer.println("@startuml");
+            writer.println("[*] --> " + machine.getInitialState().getId());
+
+            for (Transition<OrderStates, OrderEvents> transition : machine.getTransitions()) {
+                if (transition.getSource() != null && transition.getTarget() != null) {
+                    String source = transition.getSource().getId().toString();
+                    String target = transition.getTarget().getId().toString();
+                    String label = "";
+
+                    if (transition.getTrigger() != null && transition.getTrigger().getEvent() != null) {
+                        label += transition.getTrigger().getEvent().toString();
+                    }
+
+                    if (transition.getGuard() != null) {
+                        if (!label.isEmpty()) label += " ";
+                        label += "[guard]";
+                    }
+
+                    writer.printf("%s --> %s%s%n", source, target, !label.isEmpty() ? " : " + label : "");
+                }
+            }
+
+            for (State<OrderStates, OrderEvents> state : machine.getStates()) {
+                if (state.getPseudoState() != null && state.getPseudoState().getKind() == PseudoStateKind.END) {
+                    writer.printf("%s --> [*]%n", state.getId());
+                }
+            }
+
+            writer.println("@enduml");
+        }
+    }
+}
+
+@Component
+class ScxmlExporter extends BaseExporter {
+
+    public ScxmlExporter(@Qualifier("simpleEnumStateMachineFactory") StateMachineFactory<OrderStates, OrderEvents> factory) {
+        super(factory);
+    }
+
+    @Override
+    public void export(String filename) throws Exception {
+        StateMachine<OrderStates, OrderEvents> machine = createStateMachine();
+
+        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
+        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
+        Document doc = dBuilder.newDocument();
+
+        Element scxml = doc.createElement("scxml");
+        scxml.setAttribute("version", "1.0");
+        doc.appendChild(scxml);
+
+        Element statesElement = doc.createElement("states");
+        scxml.appendChild(statesElement);
+
+        for (State<OrderStates, OrderEvents> state : machine.getStates()) {
+            Element stateEl = doc.createElement("state");
+            stateEl.setAttribute("id", state.getId().toString());
+            statesElement.appendChild(stateEl);
+        }
+
+        Element transitionsElement = doc.createElement("transitions");
+        scxml.appendChild(transitionsElement);
+
+        for (Transition<OrderStates, OrderEvents> transition : machine.getTransitions()) {
+            Element t = doc.createElement("transition");
+            t.setAttribute("from", transition.getSource().getId().toString());
+            t.setAttribute("to", transition.getTarget().getId().toString());
+            t.setAttribute("event", String.valueOf(transition.getTrigger()));
+            transitionsElement.appendChild(t);
+        }
+
+        Transformer transformer = TransformerFactory.newInstance().newTransformer();
+        transformer.transform(new DOMSource(doc), new StreamResult(new File(filename)));
+    }
+}

state_machine_exporter_spring_based/src/main/java/click/kamil/StatemachinedemoApplication.java

@@ -0,0 +1,13 @@
+package click.kamil.springstatemachineexporter;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+//import org.springframework.context.annotation.ComponentScan;
+
+@SpringBootApplication
+//@ComponentScan(basePackages = {"click.kamil."})
+class StatemachinedemoApplication {
+	public static void main(String[] args) {
+		SpringApplication.run(StatemachinedemoApplication.class, args);
+	}
+}

state_machine_exporter_spring_based/src/main/resources/application.properties

@@ -0,0 +1 @@
+spring.application.name=statemachinedemo