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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.endpoint.UMOEndpointURI; |
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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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|
47 | 0 | protected final Set scheduledFiles = Collections.synchronizedSet(new HashSet()); |
48 | 0 | 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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{ |
55 | 0 | super(connector, component, endpoint); |
56 | 0 | this.setFrequency(frequency); |
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|
58 | 0 | this.connector = (FtpConnector)connector; |
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|
60 | 0 | if (endpoint.getFilter() instanceof FilenameFilter) |
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{ |
62 | 0 | this.filenameFilter = (FilenameFilter)endpoint.getFilter(); |
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} |
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else |
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{ |
66 | 0 | this.filenameFilter = null; |
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} |
68 | 0 | } |
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|
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public void poll() throws Exception |
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{ |
72 | 0 | FTPFile[] files = listFiles(); |
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|
74 | 0 | synchronized (scheduledFiles) |
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{ |
76 | 0 | for (int i = 0; i < files.length; i++) |
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{ |
78 | 0 | final FTPFile file = files[i]; |
79 | 0 | final String fileName = file.getName(); |
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|
81 | 0 | if (!scheduledFiles.contains(fileName) && !currentFiles.contains(fileName)) |
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{ |
83 | 0 | scheduledFiles.add(fileName); |
84 | 0 | getWorkManager().scheduleWork(new FtpWork(fileName, file)); |
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} |
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} |
87 | 0 | } |
88 | 0 | } |
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|
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protected FTPFile[] listFiles() throws Exception |
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{ |
92 | 0 | final UMOEndpointURI uri = endpoint.getEndpointURI(); |
93 | 0 | FTPClient client = connector.getFtp(uri); |
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|
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try |
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{ |
97 | 0 | connector.enterActiveOrPassiveMode(client, endpoint); |
98 | 0 | connector.setupFileType(client, endpoint); |
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|
100 | 0 | final String path = uri.getPath(); |
101 | 0 | if (!client.changeWorkingDirectory(path)) |
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{ |
103 | 0 | throw new IOException(MessageFormat.format("Failed to change working directory to {0}. Ftp error: {1}", |
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new Object[] {path, new Integer(client.getReplyCode())})); |
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} |
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|
107 | 0 | FTPFile[] files = client.listFiles(); |
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|
109 | 0 | if (!FTPReply.isPositiveCompletion(client.getReplyCode())) |
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{ |
111 | 0 | throw new IOException("Failed to list files. Ftp error: " + client.getReplyCode()); |
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} |
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|
114 | 0 | if (files == null || files.length == 0) |
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{ |
116 | 0 | return files; |
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} |
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|
119 | 0 | List v = new ArrayList(); |
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|
121 | 0 | for (int i = 0; i < files.length; i++) |
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{ |
123 | 0 | if (files[i].isFile()) |
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{ |
125 | 0 | if (filenameFilter == null || filenameFilter.accept(null, files[i].getName())) |
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{ |
127 | 0 | v.add(files[i]); |
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} |
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} |
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} |
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|
132 | 0 | return (FTPFile[]) v.toArray(new FTPFile[v.size()]); |
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} |
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finally |
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{ |
136 | 0 | connector.releaseFtp(uri, client); |
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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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{ |
142 | 0 | logger.debug("entering processFile()"); |
143 | 0 | UMOEndpointURI uri = endpoint.getEndpointURI(); |
144 | 0 | FTPClient client = connector.getFtp(uri); |
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|
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try |
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{ |
148 | 0 | connector.enterActiveOrPassiveMode(client, endpoint); |
149 | 0 | connector.setupFileType(client, endpoint); |
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|
151 | 0 | final String fileName = file.getName(); |
152 | 0 | final String path = uri.getPath(); |
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|
154 | 0 | if (!client.changeWorkingDirectory(path)) |
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{ |
156 | 0 | throw new IOException(MessageFormat.format("Failed to change working directory to {0}. Ftp error: {1}", |
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new Object[] {path, new Integer(client.getReplyCode())})); } |
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|
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UMOMessage message; |
160 | 0 | if (endpoint.isStreaming()) |
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{ |
162 | 0 | 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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{ |
167 | 0 | ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
168 | 0 | if (!client.retrieveFile(fileName, baos)) |
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{ |
170 | 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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} |
173 | 0 | message = new MuleMessage(connector.getMessageAdapter(baos.toByteArray())); |
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} |
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|
176 | 0 | message.setProperty(FileConnector.PROPERTY_ORIGINAL_FILENAME, fileName); |
177 | 0 | routeMessage(message); |
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|
179 | 0 | if (!client.deleteFile(fileName)) |
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{ |
181 | 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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} |
184 | 0 | } |
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finally |
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{ |
187 | 0 | logger.debug("leaving processFile()"); |
188 | 0 | connector.releaseFtp(uri, client); |
189 | 0 | } |
190 | 0 | } |
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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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|
196 | 0 | } |
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|
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protected void doDisconnect() throws Exception |
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{ |
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|
201 | 0 | } |
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|
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protected void doDispose() |
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{ |
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|
206 | 0 | } |
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|
208 | 0 | 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) |
214 | 0 | { |
215 | 0 | this.name = name; |
216 | 0 | this.file = file; |
217 | 0 | } |
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|
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public void run() |
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{ |
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try |
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{ |
223 | 0 | currentFiles.add(name); |
224 | 0 | processFile(file); |
225 | 0 | } |
226 | 0 | catch (Exception e) |
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{ |
228 | 0 | connector.handleException(e); |
229 | 0 | } |
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finally |
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{ |
232 | 0 | currentFiles.remove(name); |
233 | 0 | scheduledFiles.remove(name); |
234 | 0 | } |
235 | 0 | } |
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|
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public void release() |
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{ |
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|
240 | 0 | } |
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} |
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|
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} |