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package org.mule.providers.stream; |
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import org.mule.impl.MuleMessage; |
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import org.mule.providers.AbstractPollingMessageReceiver; |
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import org.mule.umo.UMOComponent; |
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import org.mule.umo.UMOMessage; |
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import org.mule.umo.endpoint.UMOEndpoint; |
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import org.mule.umo.lifecycle.InitialisationException; |
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import org.mule.umo.provider.UMOConnector; |
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import org.mule.util.SystemUtils; |
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|
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import java.io.InputStream; |
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import java.io.PrintStream; |
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import java.io.PushbackInputStream; |
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public class StreamMessageReceiver extends AbstractPollingMessageReceiver |
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{ |
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public static final int DEFAULT_BUFFER_SIZE = 4096; |
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|
34 | 6 | private int bufferSize = DEFAULT_BUFFER_SIZE; |
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private InputStream inputStream; |
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private StreamConnector connector; |
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|
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public StreamMessageReceiver(UMOConnector connector, |
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UMOComponent component, |
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UMOEndpoint endpoint, |
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long checkFrequency) throws InitialisationException |
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{ |
43 | 6 | super(connector, component, endpoint); |
44 | 6 | this.setFrequency(checkFrequency); |
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|
46 | 6 | this.connector = (StreamConnector)connector; |
47 | 6 | String streamName = endpoint.getEndpointURI().getAddress(); |
48 | 6 | if (StreamConnector.STREAM_SYSTEM_IN.equalsIgnoreCase(streamName)) |
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{ |
50 | 0 | inputStream = System.in; |
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} |
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else |
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{ |
54 | 6 | inputStream = this.connector.getInputStream(); |
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} |
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|
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|
58 | 6 | if (connector instanceof SystemStreamConnector) |
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{ |
60 | 6 | SystemStreamConnector ssc = (SystemStreamConnector)connector; |
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|
62 | 6 | String promptMessage = (String)endpoint.getProperties().get("promptMessage"); |
63 | 6 | if (promptMessage != null) |
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{ |
65 | 0 | ssc.setPromptMessage(promptMessage); |
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} |
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} |
68 | 6 | } |
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|
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protected void doDispose() |
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{ |
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73 | 4 | } |
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|
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public void doConnect() throws Exception |
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{ |
77 | 0 | if (connector instanceof SystemStreamConnector) |
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{ |
79 | 0 | SystemStreamConnector ssc = (SystemStreamConnector)connector; |
80 | 0 | DelayedMessageWriter writer = new DelayedMessageWriter(ssc); |
81 | 0 | writer.start(); |
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} |
83 | 0 | } |
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|
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public void doDisconnect() throws Exception |
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{ |
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|
88 | 0 | } |
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public void poll() |
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{ |
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try |
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{ |
99 | 0 | if(endpoint.isStreaming()) |
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{ |
101 | 0 | PushbackInputStream in = new PushbackInputStream(inputStream); |
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|
104 | 0 | int i = in.read(); |
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|
106 | 0 | in.unread(i); |
107 | 0 | UMOMessage umoMessage = new MuleMessage(connector.getStreamMessageAdapter(in, null)); |
108 | 0 | routeMessage(umoMessage, endpoint.isSynchronous()); |
109 | 0 | } |
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else |
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{ |
112 | 0 | byte[] inputBuffer = new byte[bufferSize]; |
113 | 0 | int len = inputStream.read(inputBuffer); |
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|
115 | 0 | if (len == -1) |
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{ |
117 | 0 | return; |
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} |
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|
120 | 0 | StringBuffer fullBuffer = new StringBuffer(bufferSize); |
121 | 0 | while (len > 0) |
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{ |
123 | 0 | fullBuffer.append(new String(inputBuffer, 0, len)); |
124 | 0 | len = 0; |
125 | 0 | if (inputStream.available() > 0) |
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{ |
127 | 0 | len = inputStream.read(inputBuffer); |
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} |
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} |
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|
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String finalMessageString; |
133 | 0 | int noCRLFLength = fullBuffer.length() - SystemUtils.LINE_SEPARATOR.length(); |
134 | 0 | if (fullBuffer.indexOf(SystemUtils.LINE_SEPARATOR, noCRLFLength) != -1) |
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{ |
136 | 0 | finalMessageString = fullBuffer.substring(0, noCRLFLength); |
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} |
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else |
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{ |
140 | 0 | finalMessageString = fullBuffer.toString(); |
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} |
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|
143 | 0 | UMOMessage umoMessage = new MuleMessage(connector.getMessageAdapter(finalMessageString)); |
144 | 0 | routeMessage(umoMessage, endpoint.isSynchronous()); |
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} |
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|
147 | 0 | doConnect(); |
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} |
149 | 0 | catch (Exception e) |
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{ |
151 | 0 | handleException(e); |
152 | 0 | } |
153 | 0 | } |
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|
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public InputStream getInputStream() |
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{ |
157 | 0 | return inputStream; |
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} |
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|
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public void setInputStream(InputStream inputStream) |
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{ |
162 | 2 | this.inputStream = inputStream; |
163 | 2 | } |
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|
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public int getBufferSize() |
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{ |
167 | 0 | return bufferSize; |
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} |
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public void setBufferSize(int bufferSize) |
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{ |
172 | 0 | this.bufferSize = bufferSize; |
173 | 0 | } |
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private class DelayedMessageWriter extends Thread |
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{ |
177 | 0 | private long delay = 0; |
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private SystemStreamConnector ssc; |
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|
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public DelayedMessageWriter(SystemStreamConnector ssc) |
181 | 0 | { |
182 | 0 | this.delay = ssc.getMessageDelayTime(); |
183 | 0 | this.ssc = ssc; |
184 | 0 | } |
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|
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public void run() |
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{ |
188 | 0 | if (delay > 0) |
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{ |
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try |
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{ |
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|
193 | 0 | sleep(delay); |
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} |
195 | 0 | catch (InterruptedException e1) |
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{ |
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|
198 | 0 | } |
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} |
200 | 0 | ((PrintStream)ssc.getOutputStream()).println(); |
201 | 0 | ((PrintStream)ssc.getOutputStream()).print(ssc.getPromptMessage()); |
202 | 0 | } |
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} |
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} |