Added a docker image containg a Py4J server.

src/main/java/com/naveensundarg/planner/Py4JServer.java

@@ -0,0 +1,86 @@
+package com.naveensundarg.planner;
+
+import com.naveensundarg.planner.utils.PlanningProblem;
+import com.naveensundarg.shadow.prover.core.ccprovers.CognitiveCalculusProver;
+import com.naveensundarg.shadow.prover.core.proof.Justification;
+import com.naveensundarg.shadow.prover.representations.formula.Formula;
+import com.naveensundarg.shadow.prover.utils.Problem;
+import com.naveensundarg.shadow.prover.utils.ProblemReader;
+import com.naveensundarg.shadow.prover.utils.Reader;
+import py4j.GatewayServer;
+
+import java.io.ByteArrayInputStream;
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.*;
+import java.util.stream.Collectors;
+
+
+public final class Py4JServer {
+
+
+    private DepthFirstPlanner depthFirstPlanner;
+
+
+    public Py4JServer(){
+
+        depthFirstPlanner = new DepthFirstPlanner();
+
+    }
+
+
+    public Planner getPlanner(){
+        return depthFirstPlanner;
+    }
+
+    public static void main(String[] args) throws UnknownHostException {
+
+        System.out.println("--------------- Starting GatewayServer --------------- ");
+        System.out.println("--------------- Started Py4J Gateway   --------------- ");
+
+        InetAddress addr;
+        System.setProperty("java.net.preferIPv4Stack", "true");
+        addr = Inet4Address.getByName("0.0.0.0");
+        GatewayServer server = new GatewayServer(new Py4JServer(),25333, 25334, addr,addr, 0, 0, null);
+        System.out.println("--------------- Started Py4J Gateway   --------------- ");
+
+        server.start();
+
+    }
+
+    public ArrayList newEmptyList(){
+
+        return new ArrayList();
+    }
+
+    public String proveFromDescription(String fileString){
+        try {
+
+            List<PlanningProblem> planningProblemList = (PlanningProblem.readFromFile(new ByteArrayInputStream(fileString.getBytes())));
+
+            Planner depthFirstPlanner = new DepthFirstPlanner();
+
+            PlanningProblem planningProblem = planningProblemList.get(0);
+
+
+            Optional<Set<Plan>> optionalPlans = depthFirstPlanner.plan(
+                    planningProblem.getBackground(),
+                    planningProblem.getActions(),
+                    planningProblem.getStart(),
+                    planningProblem.getGoal());
+
+            if(optionalPlans.isPresent()) {
+                return optionalPlans.get().toString();
+            }
+            else {
+                return "FAILED";
+            }
+
+        } catch (Reader.ParsingException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+}