From 4708ba199166d777d0b60879398a8e000f7aaf56 Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Thu, 14 Nov 2019 19:13:32 +0100
Subject: Setup simple api

---
 build.gradle                                       |  5 +++
 scripts/registry                                   |  4 ++
 .../java/pl/edu/mimuw/cloudatlas/agent/Agent.java  | 22 ++++++++++
 .../java/pl/edu/mimuw/cloudatlas/agent/Api.java    | 11 +++++
 .../mimuw/cloudatlas/agent/ApiImplementation.java  | 23 ++++++++++
 .../pl/edu/mimuw/cloudatlas/agent/AgentTest.java   | 50 ++++++++++++++++++++++
 6 files changed, 115 insertions(+)
 create mode 100755 scripts/registry
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/Agent.java
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/Api.java
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/ApiImplementation.java
 create mode 100644 src/test/java/pl/edu/mimuw/cloudatlas/agent/AgentTest.java

diff --git a/build.gradle b/build.gradle
index 34701c0..8294b27 100644
--- a/build.gradle
+++ b/build.gradle
@@ -42,3 +42,8 @@ application {
 run {
     standardInput = System.in
 }
+
+task runAgent(type: JavaExec) {
+    classpath = sourceSets.main.runtimeClasspath
+    main = 'pl.edu.mimuw.cloudatlas.agent.Agent'
+}
diff --git a/scripts/registry b/scripts/registry
new file mode 100755
index 0000000..afca7d6
--- /dev/null
+++ b/scripts/registry
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+cd build/classes/java/main
+rmiregistry -J-Djava.rmi.server.codebase="http://localhost:1099/"
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/Agent.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/Agent.java
new file mode 100644
index 0000000..79df04e
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/Agent.java
@@ -0,0 +1,22 @@
+package pl.edu.mimuw.cloudatlas.agent;
+
+import java.rmi.RemoteException;
+import java.rmi.registry.LocateRegistry;
+import java.rmi.registry.Registry;
+import java.rmi.server.UnicastRemoteObject;
+
+public class Agent {
+    public static void main(String[] args) {
+		try {
+			ApiImplementation api = new ApiImplementation();
+			Api apiStub =
+				(Api) UnicastRemoteObject.exportObject(api, 0);
+			Registry registry = LocateRegistry.getRegistry();
+			registry.rebind("Api", apiStub);
+			System.out.println("Api bound");
+		} catch (Exception e) {
+			System.err.println("Agent exception:");
+			e.printStackTrace();
+		}
+    }
+}
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/Api.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/Api.java
new file mode 100644
index 0000000..c0003a8
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/Api.java
@@ -0,0 +1,11 @@
+package pl.edu.mimuw.cloudatlas.agent;
+
+import java.rmi.Remote;
+import java.rmi.RemoteException;
+
+import pl.edu.mimuw.cloudatlas.model.ValueSet;
+
+public interface Api extends Remote {
+	public int ping(int n) throws RemoteException;
+    public ValueSet getZones() throws RemoteException;
+}
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/ApiImplementation.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/ApiImplementation.java
new file mode 100644
index 0000000..fc7532d
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/ApiImplementation.java
@@ -0,0 +1,23 @@
+package pl.edu.mimuw.cloudatlas.agent;
+
+import java.rmi.RemoteException;
+
+import java.util.Set;
+import java.util.HashSet;
+
+import pl.edu.mimuw.cloudatlas.model.Value;
+import pl.edu.mimuw.cloudatlas.model.ValueSet;
+import pl.edu.mimuw.cloudatlas.model.ValueNull;
+import pl.edu.mimuw.cloudatlas.model.TypePrimitive;
+
+public class ApiImplementation implements Api {
+    public int ping(int n) throws RemoteException {
+        return n + 1;
+    }
+
+    public ValueSet getZones() throws RemoteException {
+        Set<Value> set = new HashSet();
+        set.add(ValueNull.getInstance());
+        return new ValueSet(set, TypePrimitive.STRING);
+    }
+}
diff --git a/src/test/java/pl/edu/mimuw/cloudatlas/agent/AgentTest.java b/src/test/java/pl/edu/mimuw/cloudatlas/agent/AgentTest.java
new file mode 100644
index 0000000..a185649
--- /dev/null
+++ b/src/test/java/pl/edu/mimuw/cloudatlas/agent/AgentTest.java
@@ -0,0 +1,50 @@
+package pl.edu.mimuw.cloudatlas.agent;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+import java.lang.Runtime;
+import java.lang.Process;
+import java.lang.Thread;
+
+import java.io.InputStream;
+
+import java.rmi.registry.LocateRegistry;
+import java.rmi.RemoteException;
+import java.rmi.registry.Registry;
+import java.math.BigDecimal;
+
+public class AgentTest {
+    private static Process registryProcess;
+    private static Process agentProcess;
+
+    @BeforeClass
+    public static void bindApi() throws Exception {
+        registryProcess = Runtime.getRuntime().exec("./scripts/registry");
+        Thread.sleep(1000);
+        agentProcess = Runtime.getRuntime().exec("./gradlew runAgent");
+        Thread.sleep(1000);
+    }
+
+    @AfterClass
+    public static void killProcesses() throws Exception {
+        registryProcess.destroy();
+        agentProcess.destroy();
+    }
+
+    @Test
+    public void testPing() {
+		try {
+			Registry registry = LocateRegistry.getRegistry("localhost");
+			Api api = (Api) registry.lookup("Api");
+			int res = api.ping(10);
+            assertEquals(11, res);
+		} catch (Exception e) {
+			System.err.println("FibonacciClient exception:");
+			e.printStackTrace();
+            assertTrue(false);
+		}
+    }
+}
-- 
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