initial elasticache implementation

VerteilteSysteme-Examples/.classpath

@@ -1,23 +1,24 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
-	<classpathentry kind="src" path="src"/>
-	<classpathentry kind="lib" path="lib/grizzly-http-all-2.4.2.jar"/>
-	<classpathentry kind="lib" path="lib/hk2-api-2.5.0-b42.jar"/>
-	<classpathentry kind="lib" path="lib/hk2-locator-2.5.0-b42.jar"/>
-	<classpathentry kind="lib" path="lib/hk2-utils-2.5.0-b42.jar"/>
-	<classpathentry kind="lib" path="lib/javax.annotation-api-1.2.jar"/>
-	<classpathentry kind="lib" path="lib/javax.inject-2.5.0-b42.jar"/>
-	<classpathentry kind="lib" path="lib/javax.json.bind-api-1.0.jar"/>
-	<classpathentry kind="lib" path="lib/javax.ws.rs-api-2.1.jar"/>
-	<classpathentry kind="lib" path="lib/jersey-client.jar"/>
-	<classpathentry kind="lib" path="lib/jersey-common.jar"/>
-	<classpathentry kind="lib" path="lib/jersey-container-grizzly2-http-2.26.jar"/>
-	<classpathentry kind="lib" path="lib/jersey-hk2.jar"/>
-	<classpathentry kind="lib" path="lib/jersey-server.jar"/>
-	<classpathentry kind="lib" path="lib/validation-api-1.1.0.Final.jar"/>
-	<classpathentry kind="lib" path="lib/activemq-all-5.15.2.jar"/>
-	<classpathentry kind="lib" path="lib-aws/aws-java-sdk-ec2-1.11.257.jar"/>
-	<classpathentry kind="lib" path="lib-aws/aws-java-sdk-core-1.11.257.jar"/>
-	<classpathentry kind="output" path="bin"/>
-</classpath>
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="lib" path="lib/grizzly-http-all-2.4.2.jar"/>
+	<classpathentry kind="lib" path="lib/hk2-api-2.5.0-b42.jar"/>
+	<classpathentry kind="lib" path="lib/hk2-locator-2.5.0-b42.jar"/>
+	<classpathentry kind="lib" path="lib/hk2-utils-2.5.0-b42.jar"/>
+	<classpathentry kind="lib" path="lib/javax.annotation-api-1.2.jar"/>
+	<classpathentry kind="lib" path="lib/javax.inject-2.5.0-b42.jar"/>
+	<classpathentry kind="lib" path="lib/javax.json.bind-api-1.0.jar"/>
+	<classpathentry kind="lib" path="lib/javax.ws.rs-api-2.1.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-client.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-common.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-container-grizzly2-http-2.26.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-hk2.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-server.jar"/>
+	<classpathentry kind="lib" path="lib/validation-api-1.1.0.Final.jar"/>
+	<classpathentry kind="lib" path="lib/activemq-all-5.15.2.jar"/>
+	<classpathentry kind="lib" path="lib-aws/aws-java-sdk-ec2-1.11.257.jar"/>
+	<classpathentry kind="lib" path="lib-aws/aws-java-sdk-core-1.11.257.jar"/>
+	<classpathentry kind="lib" path="lib-aws/jedis-2.9.0.jar"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

VerteilteSysteme-Examples/src/verteiltesysteme/aws/TCPTimeCounterServer.java

@@ -9,14 +9,12 @@ import java.net.Socket;
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 import java.util.Date;
+import redis.clients.jedis.Jedis;
 
 class TCPTimeCounterServer {
-	// Variable für Zählerstand des Servers, dieser Zähler wird durch Anfragen der
-	// Clients erhöht
-	private static long counter = 0;
-
 	public static void main(String args[]) throws Exception {
 		int tcpPort = 36038;
+		String redisClusterURL = "vertsys-ec1-0001-002.71rxr9.0001.euc1.cache.amazonaws.com";
 		DateFormat df = new SimpleDateFormat("dd.MM.yyyy HH:mm:ss");
 
 		// Socket erzeugen
@@ -35,8 +33,20 @@ class TCPTimeCounterServer {
 
 			// Vom Client gesendete Zahl einlesen und auf aktuellen Zählerstand addieren
 			long number = new Long(new String(inFromClient.readLine()));
-			counter += number;
 
+			// Verbindung zum Redis Cluster (Amazon ElastiCache)
+			Jedis jedis = new Jedis(redisClusterURL, 6379);
+            System.out.println("Connected to redis server");
+            // check whether server is running or not
+            //System.out.println("redis server is running: " + jedis.ping());
+			//System.out.println("redis server cluster info: " + jedis.clusterInfo());
+			// Variable für Zählerstand des Servers, dieser Zähler wird durch Anfragen der
+			// Clients erhöht
+			jedis.incrBy("vertsys-counter", number);
+			long counter = new Long(jedis.get("vertsys-counter"));
+			jedis.close();
+			
+			System.out.println("TTL:" + jedis.ttl("vertsys-counter"));
 			System.out.println("Anfrage von Client " + connectionSocket.getInetAddress() + ":" + connectionSocket.getPort() + " Zahl: " + number + " Zählerstand: " + counter);
 			
 			// Try/Catch hinzugefügt, nachdem bei Einsatz Amazon AWS (Healthcheck des ELB) clientSentence null war  
@@ -51,7 +61,7 @@ class TCPTimeCounterServer {
 				ioe.printStackTrace();
 			} catch (NullPointerException npe) {
 				npe.printStackTrace();
-			}			
+			}		
 		}
 	}
 }