From 3426556541256f93d2cba65df3b9c8d1d1772861 Mon Sep 17 00:00:00 2001 From: platania Date: Thu, 16 Feb 2017 11:20:22 -0500 Subject: Initial OpenECOMP Demo commit Change-Id: Ibf8696196a7ac2c84ac8aa7cde1982c9c89fb64d Signed-off-by: platania --- vnfs/vLB/DNSClient/src/main/.DS_Store | Bin 0 -> 6148 bytes vnfs/vLB/DNSClient/src/main/java/.DS_Store | Bin 0 -> 6148 bytes vnfs/vLB/DNSClient/src/main/java/DNSServer.java | 85 ++++++++++++++++++++++++ vnfs/vLB/DNSClient/src/main/java/FDClient.java | 73 ++++++++++++++++++++ 4 files changed, 158 insertions(+) create mode 100644 vnfs/vLB/DNSClient/src/main/.DS_Store create mode 100644 vnfs/vLB/DNSClient/src/main/java/.DS_Store create mode 100644 vnfs/vLB/DNSClient/src/main/java/DNSServer.java create mode 100644 vnfs/vLB/DNSClient/src/main/java/FDClient.java (limited to 'vnfs/vLB/DNSClient/src/main') diff --git a/vnfs/vLB/DNSClient/src/main/.DS_Store b/vnfs/vLB/DNSClient/src/main/.DS_Store new file mode 100644 index 00000000..9206bc71 Binary files /dev/null and b/vnfs/vLB/DNSClient/src/main/.DS_Store differ diff --git a/vnfs/vLB/DNSClient/src/main/java/.DS_Store b/vnfs/vLB/DNSClient/src/main/java/.DS_Store new file mode 100644 index 00000000..05c35472 Binary files /dev/null and b/vnfs/vLB/DNSClient/src/main/java/.DS_Store differ diff --git a/vnfs/vLB/DNSClient/src/main/java/DNSServer.java b/vnfs/vLB/DNSClient/src/main/java/DNSServer.java new file mode 100644 index 00000000..483819f3 --- /dev/null +++ b/vnfs/vLB/DNSClient/src/main/java/DNSServer.java @@ -0,0 +1,85 @@ + +/*************************************************************************//** + * + * Copyright © 2017 AT&T Intellectual Property. All rights reserved. + * + * Licensed 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 main.java; + +import java.io.IOException; +import java.net.DatagramPacket; +import java.net.DatagramSocket; + +/* + * Client-side Failure Detector (FD) implementation. + * @param server_addr: IP address of the remote server + * @param port: the port that the FD service listens for incoming UDP packets + * @param timeout: how often the FD checks the status of client processes + * @param debug: debug mode on/off + */ + +public class DNSServer { + + public static void main(String[] args) throws IOException { + if(args.length != 5) { + System.out.println("Missing input parameters"); + System.out.println("Usage:"); + System.out.print("\t- java FDClient [process ID] [server IP address] [server port] [timeout (sec)] [debug]\n"); + System.exit(0); + } + // IP address and port of the remote server + String PID = args[0]; + String SERVER_ADDR = args[1]; + int PORT = Integer.parseInt(args[2]); + long TIMEOUT = Long.parseLong(args[3]) * 1000; // convert the FD timeout to milliseconds + int debug = Integer.parseInt(args[4]); + boolean DEBUG; + if(debug <= 0) + DEBUG = false; + else + DEBUG = true; + + // Run FD client + new FDClient(PID, SERVER_ADDR, PORT, TIMEOUT, DEBUG); + + // Listen for reply messages + @SuppressWarnings("resource") + DatagramSocket sock = new DatagramSocket(PORT); + byte[] buffer = new byte[256]; + boolean gre_tunnel_enabled = false; + + while(true) { + DatagramPacket packet = new DatagramPacket(buffer, buffer.length); + sock.receive(packet); + String[] content = new String(packet.getData()).trim().split(":"); // Remove leading and trailing spaces + String msg_type = content[0]; + String ip = content[1]; + // Process only PING UDP packets + if(msg_type.equals("PONG")) { + if(DEBUG) System.out.println("Reply message received from process " + ip); + if(!gre_tunnel_enabled) { + // Set GRE tunnel towards load balancer + String script = new String("bash /opt/FDclient/set_gre_tunnel.sh " + ip); + Runtime.getRuntime().exec(script); + if(DEBUG) System.out.println("GRE tunnel towards load balancer " + ip + " done"); + gre_tunnel_enabled = true; + } + } + else { + if(DEBUG) System.out.println("The received message is not a PONG. Received content: " + content); + } + } + } +} diff --git a/vnfs/vLB/DNSClient/src/main/java/FDClient.java b/vnfs/vLB/DNSClient/src/main/java/FDClient.java new file mode 100644 index 00000000..8665937a --- /dev/null +++ b/vnfs/vLB/DNSClient/src/main/java/FDClient.java @@ -0,0 +1,73 @@ + +/*************************************************************************//** + * + * Copyright © 2017 AT&T Intellectual Property. All rights reserved. + * + * Licensed 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 main.java; + +import java.io.*; +import java.net.*; + +/* + * Client-side Failure Detector (FD) implementation. + * @param server_addr: IP address of the remote server + * @param port: the port that the FD service listens for incoming UDP packets + * @param timeout: how often the FD checks the status of client processes + * @param debug: debug mode on/off + */ + +public class FDClient implements Runnable { + private String PID; + private String SERVER_ADDR; + private int PORT; + private long TIMEOUT; + private boolean DEBUG; + + public FDClient(String pid, String server_addr, int port, long timeout, boolean debug) throws IOException { + PID = pid; + SERVER_ADDR = server_addr; + PORT = port; + TIMEOUT = timeout; + DEBUG = debug; + (new Thread(this)).start(); + } + + @SuppressWarnings("resource") + @Override + public void run() { + // Define a DatagramSocket object to send packets to the server + try { + DatagramSocket sock = new DatagramSocket(); + InetAddress IPAddress = InetAddress.getByName(SERVER_ADDR); + + // Allocate buffer for the PING message + String content = "PING:" + PID; + byte[] buffer = content.getBytes(); + + // Sent a PING message every TIMEOUT milliseconds + while(true) { + DatagramPacket packet = new DatagramPacket(buffer, buffer.length, IPAddress, PORT); + sock.send(packet); + + if(DEBUG) System.out.println("Sent PING message to server " + SERVER_ADDR + ":" + PORT); + try { + Thread.sleep(TIMEOUT); + } + catch(InterruptedException e) {} + } + } catch(IOException e) {} + } +} -- cgit 1.2.3-korg