From 0ed2c1124cf1b9e49a2ec1fa0126a8df09f9e758 Mon Sep 17 00:00:00 2001
From: Andrew Branson <andrew.branson@cern.ch>
Date: Tue, 7 Oct 2014 09:18:11 +0200
Subject: Repackage to org.cristalise

---
 .../kernel/entity/proxy/ProxyServerConnection.java | 145 +++++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 src/main/java/org/cristalise/kernel/entity/proxy/ProxyServerConnection.java

(limited to 'src/main/java/org/cristalise/kernel/entity/proxy/ProxyServerConnection.java')

diff --git a/src/main/java/org/cristalise/kernel/entity/proxy/ProxyServerConnection.java b/src/main/java/org/cristalise/kernel/entity/proxy/ProxyServerConnection.java
new file mode 100644
index 0000000..1b4fba4
--- /dev/null
+++ b/src/main/java/org/cristalise/kernel/entity/proxy/ProxyServerConnection.java
@@ -0,0 +1,145 @@
+/**
+ * This file is part of the CRISTAL-iSE kernel.
+ * Copyright (c) 2001-2014 The CRISTAL Consortium. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * http://www.fsf.org/licensing/licenses/lgpl.html
+ */
+package org.cristalise.kernel.entity.proxy;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.InterruptedIOException;
+import java.io.PrintWriter;
+import java.net.Socket;
+
+import org.cristalise.kernel.common.InvalidDataException;
+import org.cristalise.kernel.utils.Logger;
+
+
+
+public class ProxyServerConnection extends Thread
+{
+
+    public boolean serverIsActive = true;
+    // proxy client details
+    String serverName;
+    int serverPort;
+    Socket serverConnection;
+    ProxyManager manager;
+    // for talking to the proxy server
+    PrintWriter serverStream;
+    boolean listening = false;
+    static boolean isServer = false;
+
+    /**
+     * Create an entity proxy manager to listen for proxy events and reap unused proxies
+     */
+    public ProxyServerConnection(String host, int port, ProxyManager manager)
+    {
+        Logger.msg(5, "ProxyServerConnection - Initialising connection to "+host+":"+port);
+        serverName = host;
+        serverPort = port;
+        this.manager = manager;
+        listening = true;
+        start();
+    }
+
+    @Override
+	public void run() {
+        Thread.currentThread().setName("Proxy Client Connection Listener to "+serverName+":"+serverPort);
+        while (listening) {
+            try {
+                if (serverConnection == null) connect();
+                if (serverConnection != null) {
+                    BufferedReader request = new BufferedReader(new InputStreamReader(serverConnection.getInputStream()));
+                    String input = null;
+                    ProxyMessage thisMessage;
+                    while (listening && serverConnection != null) {
+                        try {
+                            input = request.readLine();
+                            thisMessage = new ProxyMessage(input);
+                            thisMessage.setServer(serverName);
+                            manager.processMessage(thisMessage);
+                        } catch (InterruptedIOException ex) { // timeout - send a ping
+                            sendMessage(ProxyMessage.pingMessage);
+                        } catch (InvalidDataException ex) { // invalid proxy message
+                            if (input != null)
+                                Logger.error("EntityProxyManager - Invalid proxy message: "+input);
+                        }
+                    }
+                }
+            } catch (IOException ex) {
+                Logger.error("ProxyServerConnection - Disconnected from "+serverName+":"+serverPort);
+                try {
+                    serverStream.close();
+                    serverConnection.close();
+                } catch (IOException e1) { }
+
+
+                serverStream = null;
+                serverConnection = null;
+            }
+        }
+
+        if (serverStream != null) {
+            try {
+                Logger.msg(1, "Disconnecting from proxy server on "+serverName+":"+serverPort);
+                serverStream.println(ProxyMessage.byeMessage.toString());
+                serverStream.close();
+                serverConnection.close();
+                serverConnection = null;
+            } catch (Exception e) {
+                Logger.error("Error disconnecting from proxy server.");
+            }
+        }
+    }
+
+    public void connect() {
+        Logger.msg(3, "ProxyServerConnection - connecting to proxy server on "+serverName+":"+serverPort);
+        try {
+            serverConnection = new Socket(serverName, serverPort);
+            serverConnection.setKeepAlive(true);
+            serverIsActive = true;
+            serverConnection.setSoTimeout(5000);
+            serverStream = new PrintWriter(serverConnection.getOutputStream(), true);
+            Logger.msg("Connected to proxy server on "+serverName+":"+serverPort);
+            manager.resubscribe(this);
+        } catch (Exception e) {
+            Logger.msg(3, "Could not connect to proxy server. Retrying in 5s");
+            try { Thread.sleep(5000); } catch (InterruptedException ex) { }
+            serverStream = null;
+            serverConnection = null;
+            serverIsActive = false;
+        }
+    }
+
+    public void shutdown() {
+        Logger.msg("Proxy Client: flagging shutdown.");
+        listening = false;
+    }
+
+    /**
+     * @param sub
+     */
+    public void sendMessage(ProxyMessage sub) {
+        if (serverStream != null)
+            serverStream.println(sub);
+    }
+
+}
+
-- 
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