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package org.apache.commons.messenger.tool; |
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import java.io.FileReader; |
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import java.io.FileWriter; |
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import java.io.InputStreamReader; |
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import java.io.OutputStreamWriter; |
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import java.io.PrintWriter; |
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import java.io.Reader; |
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import java.io.Writer; |
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import javax.jms.Destination; |
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import javax.jms.JMSException; |
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import javax.jms.Message; |
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import javax.jms.TextMessage; |
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import org.apache.commons.messenger.MessengerManager; |
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33 | 0 | public class Caller extends Producer { |
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public static void main(String[] args) { |
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try { |
37 | 0 | Caller client = new Caller(); |
38 | 0 | client.run( args ); |
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} |
40 | 0 | catch (JMSException e) { |
41 | 0 | System.out.println( "Caught: " + e ); |
42 | 0 | Exception linked = e.getLinkedException(); |
43 | 0 | if ( linked != null ) { |
44 | 0 | System.out.println( "Underlying exception: " + linked ); |
45 | 0 | linked.printStackTrace(); |
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} |
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else { |
48 | 0 | e.printStackTrace(); |
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} |
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} |
51 | 0 | catch (Exception e) { |
52 | 0 | System.out.println( "Caught: " + e ); |
53 | 0 | e.printStackTrace(); |
54 | 0 | } |
55 | 0 | } |
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public void run(String[] args) throws Exception { |
58 | 0 | if ( args.length < 2 ) { |
59 | 0 | System.out.println( "Usage: Caller messengerName destination [inputFileName] [outputFileName]" ); |
60 | 0 | System.out.println( "If no input file is used then System.in is used." ); |
61 | 0 | System.out.println( "If no output file is used then System.out is used." ); |
62 | 0 | return; |
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} |
64 | 0 | String name = args[0]; |
65 | 0 | String subject = args[1]; |
66 | 0 | messenger = MessengerManager.get( name ); |
67 | 0 | if ( messenger == null ) { |
68 | 0 | throw new JMSException( "No such messenger called: " + name ); |
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} |
70 | 0 | Destination destination = messenger.getDestination( subject ); |
71 | 0 | if ( destination == null ) { |
72 | 0 | throw new JMSException( "Could not find destination: " + subject ); |
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} |
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75 | 0 | Reader reader = ( args.length > 2 ) |
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? new FileReader( args[2] ) |
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: new InputStreamReader( System.in ); |
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79 | 0 | Writer writer = ( args.length > 3 ) |
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? new FileWriter( args[3] ) |
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: new OutputStreamWriter( System.out ); |
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83 | 0 | call( destination, reader, writer ); |
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86 | 0 | messenger.close(); |
87 | 0 | } |
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protected void call( Destination destination, Reader reader, Writer writer ) throws Exception { |
90 | 0 | Message request = createMessage( reader ); |
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92 | 0 | Message response = messenger.call( destination, request ); |
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94 | 0 | writeMessage( response, writer ); |
95 | 0 | } |
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protected void writeMessage(Message message, Writer out) throws Exception { |
100 | 0 | PrintWriter writer = new PrintWriter(out); |
101 | 0 | if ( message instanceof TextMessage ) { |
102 | 0 | TextMessage textMessage = (TextMessage) message; |
103 | 0 | writer.println( textMessage.getText() ); |
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} |
105 | 0 | writer.close(); |
106 | 0 | } |
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} |
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