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package org.mule.providers.ftp; |
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|
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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.providers.file.FileConnector; |
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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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|
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import java.io.FilenameFilter; |
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import java.io.IOException; |
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import java.text.MessageFormat; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.HashSet; |
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import java.util.List; |
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import java.util.Set; |
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|
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import javax.resource.spi.work.Work; |
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|
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import org.apache.commons.io.output.ByteArrayOutputStream; |
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import org.apache.commons.net.ftp.FTPClient; |
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import org.apache.commons.net.ftp.FTPFile; |
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import org.apache.commons.net.ftp.FTPReply; |
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|
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public class FtpMessageReceiver extends AbstractPollingMessageReceiver |
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{ |
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protected final FtpConnector connector; |
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protected final FilenameFilter filenameFilter; |
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|
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|
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|
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|
46 | 10 | protected final Set scheduledFiles = Collections.synchronizedSet(new HashSet()); |
47 | 10 | protected final Set currentFiles = Collections.synchronizedSet(new HashSet()); |
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|
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public FtpMessageReceiver(UMOConnector connector, |
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UMOComponent component, |
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UMOEndpoint endpoint, |
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long frequency) throws InitialisationException |
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{ |
54 | 10 | super(connector, component, endpoint); |
55 | 10 | this.setFrequency(frequency); |
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|
57 | 10 | this.connector = (FtpConnector)connector; |
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|
59 | 10 | if (endpoint.getFilter() instanceof FilenameFilter) |
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{ |
61 | 0 | this.filenameFilter = (FilenameFilter)endpoint.getFilter(); |
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} |
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else |
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{ |
65 | 10 | this.filenameFilter = null; |
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} |
67 | 10 | } |
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|
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public void poll() throws Exception |
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{ |
71 | 10 | FTPFile[] files = listFiles(); |
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|
73 | 6 | synchronized (scheduledFiles) |
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{ |
75 | 12 | for (int i = 0; i < files.length; i++) |
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{ |
77 | 6 | final FTPFile file = files[i]; |
78 | 6 | final String fileName = file.getName(); |
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|
80 | 6 | if (!scheduledFiles.contains(fileName) && !currentFiles.contains(fileName)) |
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{ |
82 | 6 | scheduledFiles.add(fileName); |
83 | 6 | getWorkManager().scheduleWork(new FtpWork(fileName, file)); |
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} |
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} |
86 | 6 | } |
87 | 6 | } |
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|
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protected FTPFile[] listFiles() throws Exception |
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{ |
91 | 10 | FTPClient client = null; |
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try |
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{ |
94 | 10 | client = connector.createFtpClient(endpoint); |
95 | 6 | FTPFile[] files = client.listFiles(); |
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|
97 | 6 | if (!FTPReply.isPositiveCompletion(client.getReplyCode())) |
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{ |
99 | 0 | throw new IOException("Failed to list files. Ftp error: " + client.getReplyCode()); |
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} |
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|
102 | 6 | if (files == null || files.length == 0) |
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{ |
104 | 0 | return files; |
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} |
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|
107 | 6 | List v = new ArrayList(); |
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|
109 | 12 | for (int i = 0; i < files.length; i++) |
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{ |
111 | 6 | if (files[i].isFile()) |
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{ |
113 | 6 | if (filenameFilter == null || filenameFilter.accept(null, files[i].getName())) |
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{ |
115 | 6 | v.add(files[i]); |
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} |
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} |
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} |
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|
120 | 6 | return (FTPFile[]) v.toArray(new FTPFile[v.size()]); |
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} |
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finally |
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{ |
124 | 10 | if (client != null) |
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{ |
126 | 6 | connector.releaseFtp(endpoint.getEndpointURI(), client); |
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} |
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} |
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} |
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|
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protected void processFile(FTPFile file) throws Exception |
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{ |
133 | 6 | logger.debug("entering processFile()"); |
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|
135 | 6 | FTPClient client = null; |
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try |
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{ |
138 | 6 | client = connector.createFtpClient(endpoint); |
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|
140 | 6 | final String fileName = file.getName(); |
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|
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UMOMessage message; |
143 | 6 | if (endpoint.isStreaming()) |
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{ |
145 | 6 | message = new MuleMessage( |
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connector.getStreamMessageAdapter(client.retrieveFileStream(fileName), null)); |
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} |
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else |
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{ |
150 | 0 | ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
151 | 0 | if (!client.retrieveFile(fileName, baos)) |
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{ |
153 | 0 | throw new IOException(MessageFormat.format("Failed to retrieve file {0}. Ftp error: {1}", |
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new Object[] {fileName, new Integer(client.getReplyCode())})); |
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} |
156 | 0 | message = new MuleMessage(connector.getMessageAdapter(baos.toByteArray())); |
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} |
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|
159 | 6 | message.setProperty(FileConnector.PROPERTY_ORIGINAL_FILENAME, fileName); |
160 | 6 | message.setProperty(FileConnector.PROPERTY_FILE_SIZE, new Long(file.getSize())); |
161 | 6 | routeMessage(message); |
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|
163 | 6 | if (!client.deleteFile(fileName)) |
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{ |
165 | 0 | throw new IOException(MessageFormat.format("Failed to delete file {0}. Ftp error: {1}", |
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new Object[] {fileName, new Integer(client.getReplyCode())})); |
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} |
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} |
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finally |
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{ |
171 | 6 | logger.debug("leaving processFile()"); |
172 | 6 | if (client != null) |
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{ |
174 | 6 | connector.releaseFtp(endpoint.getEndpointURI(), client); |
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} |
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} |
177 | 6 | } |
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|
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protected void doConnect() throws Exception |
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{ |
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|
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|
183 | 4 | } |
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|
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protected void doDisconnect() throws Exception |
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{ |
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|
188 | 4 | } |
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|
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protected void doDispose() |
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{ |
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|
193 | 6 | } |
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|
195 | 6 | private final class FtpWork implements Work |
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{ |
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private final String name; |
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private final FTPFile file; |
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|
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private FtpWork(String name, FTPFile file) |
201 | 6 | { |
202 | 6 | this.name = name; |
203 | 6 | this.file = file; |
204 | 6 | } |
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|
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public void run() |
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{ |
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try |
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{ |
210 | 6 | currentFiles.add(name); |
211 | 6 | processFile(file); |
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} |
213 | 0 | catch (Exception e) |
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{ |
215 | 0 | connector.handleException(e); |
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} |
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finally |
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{ |
219 | 6 | currentFiles.remove(name); |
220 | 6 | scheduledFiles.remove(name); |
221 | 6 | } |
222 | 6 | } |
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|
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public void release() |
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{ |
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|
227 | 0 | } |
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} |
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|
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} |