1 /*
2 $Id: GroovySocketServer.java,v 1.6 2005/04/05 09:15:35 jez Exp $
3
4 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
5
6 Redistribution and use of this software and associated documentation
7 ("Software"), with or without modification, are permitted provided
8 that the following conditions are met:
9
10 1. Redistributions of source code must retain copyright
11 statements and notices. Redistributions must also contain a
12 copy of this document.
13
14 2. Redistributions in binary form must reproduce the
15 above copyright notice, this list of conditions and the
16 following disclaimer in the documentation and/or other
17 materials provided with the distribution.
18
19 3. The name "groovy" must not be used to endorse or promote
20 products derived from this Software without prior written
21 permission of The Codehaus. For written permission,
22 please contact info@codehaus.org.
23
24 4. Products derived from this Software may not be called "groovy"
25 nor may "groovy" appear in their names without prior written
26 permission of The Codehaus. "groovy" is a registered
27 trademark of The Codehaus.
28
29 5. Due credit should be given to The Codehaus -
30 http://groovy.codehaus.org/
31
32 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
33 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
34 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
35 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
36 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
37 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
43 OF THE POSSIBILITY OF SUCH DAMAGE.
44
45 */
46
47 package groovy.ui;
48 import groovy.lang.*;
49 import java.io.*;
50 import java.net.*;
51
52 /***
53 * Simple server that executes supplied script against a socket
54 * @author Jeremy Rayner
55 */
56
57 public class GroovySocketServer implements Runnable {
58 private URL url;
59 private GroovyShell groovy;
60 private boolean isScriptFile;
61 private String scriptFilenameOrText;
62 private boolean autoOutput;
63
64 public GroovySocketServer(GroovyShell groovy, boolean isScriptFile, String scriptFilenameOrText, boolean autoOutput, int port) {
65 this.groovy = groovy;
66 this.isScriptFile = isScriptFile;
67 this.scriptFilenameOrText = scriptFilenameOrText;
68 this.autoOutput = autoOutput;
69 try {
70 url = new URL("http", InetAddress.getLocalHost().getHostAddress(), port, "/");
71 System.out.println("groovy is listening on port " + port);
72 } catch (IOException e) {
73 e.printStackTrace();
74 }
75 new Thread(this).start();
76 }
77
78 public void run() {
79 try {
80 ServerSocket serverSocket = new ServerSocket(url.getPort());
81 while (true) {
82 // Create one script per socket connection.
83 // This is purposefully not caching the Script
84 // so that the script source file can be changed on the fly,
85 // as each connection is made to the server.
86 Script script;
87 if (isScriptFile) {
88 GroovyMain gm = new GroovyMain();
89 script = groovy.parse(new FileInputStream(gm.huntForTheScriptFile(scriptFilenameOrText)));
90 } else {
91 script = groovy.parse(scriptFilenameOrText);
92 }
93 new GroovyClientConnection(script, autoOutput, serverSocket.accept());
94 }
95 } catch (Exception e) {
96 e.printStackTrace();
97 }
98 }
99
100 class GroovyClientConnection implements Runnable {
101 private Script script;
102 private Socket socket;
103 private BufferedReader reader;
104 private PrintWriter writer;
105 private boolean autoOutput;
106
107 GroovyClientConnection(Script script, boolean autoOutput,Socket socket) throws IOException {
108 this.script = script;
109 this.autoOutput = autoOutput;
110 this.socket = socket;
111 reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
112 writer = new PrintWriter(socket.getOutputStream());
113 new Thread(this, "Groovy client connection - " + socket.getInetAddress().getHostAddress()).start();
114 }
115 public void run() {
116 try {
117 String line = null;
118 script.setProperty("out", writer);
119 script.setProperty("socket", socket);
120 script.setProperty("init", Boolean.TRUE);
121 while ((line = reader.readLine()) != null) {
122 // System.out.println(line);
123 script.setProperty("line", line);
124 Object o = script.run();
125 script.setProperty("init", Boolean.FALSE);
126 if (o != null) {
127 if ("success".equals(o)) {
128 break; // to close sockets gracefully etc...
129 } else {
130 if (autoOutput) {
131 writer.println(o);
132 }
133 }
134 }
135 writer.flush();
136 }
137 } catch (IOException e) {
138 e.printStackTrace();
139 } finally {
140 try {
141 writer.flush();
142 writer.close();
143 } finally {
144 try {
145 socket.close();
146 } catch (IOException e3) {
147 e3.printStackTrace();
148 }
149 }
150 }
151 }
152 }
153 }