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package org.mule.transport.ftp; |
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import org.mule.api.MuleMessage; |
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import org.mule.api.endpoint.EndpointURI; |
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import org.mule.api.endpoint.InboundEndpoint; |
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import org.mule.api.lifecycle.CreateException; |
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import org.mule.api.lifecycle.InitialisationException; |
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import org.mule.transport.AbstractMessageRequester; |
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import java.io.File; |
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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 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.FTPListParseEngine; |
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import org.apache.commons.net.ftp.FTPReply; |
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public class FtpMessageRequester extends AbstractMessageRequester |
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{ |
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private final static int FTP_LIST_PAGE_SIZE = 25; |
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protected final FtpConnector connector; |
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public FtpMessageRequester(InboundEndpoint endpoint) |
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{ |
33 | 0 | super(endpoint); |
34 | 0 | this.connector = (FtpConnector) endpoint.getConnector(); |
35 | 0 | } |
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@Override |
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protected void doDispose() |
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{ |
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41 | 0 | } |
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@Override |
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protected void doConnect() throws Exception |
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{ |
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47 | 0 | } |
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@Override |
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protected void doDisconnect() throws Exception |
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{ |
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try |
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{ |
54 | 0 | EndpointURI uri = endpoint.getEndpointURI(); |
55 | 0 | FTPClient client = connector.getFtp(uri); |
56 | 0 | connector.destroyFtp(uri, client); |
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} |
58 | 0 | catch (Exception e) |
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{ |
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61 | 0 | } |
62 | 0 | } |
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@Override |
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protected MuleMessage doRequest(long timeout) throws Exception |
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{ |
78 | 0 | FTPClient client = null; |
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try |
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{ |
81 | 0 | client = connector.createFtpClient(endpoint); |
82 | 0 | FTPFile fileToProcess = findFileToProcess(client); |
83 | 0 | if (fileToProcess == null) |
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{ |
85 | 0 | return null; |
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} |
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|
88 | 0 | fileToProcess = prepareFile(client, fileToProcess); |
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90 | 0 | FtpMuleMessageFactory messageFactory = createMuleMessageFactory(client); |
91 | 0 | MuleMessage message = messageFactory.create(fileToProcess, endpoint.getEncoding()); |
92 | 0 | postProcess(client, fileToProcess, message); |
93 | 0 | return message; |
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} |
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finally |
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{ |
97 | 0 | connector.releaseFtp(endpoint.getEndpointURI(), client); |
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} |
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} |
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protected void postProcess(FTPClient client, FTPFile file, MuleMessage message) throws Exception |
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{ |
103 | 0 | if (!connector.isStreaming()) |
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{ |
105 | 0 | if (!client.deleteFile(file.getName())) |
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{ |
107 | 0 | throw new IOException(MessageFormat.format("Failed to delete file {0}. Ftp error: {1}", file.getName(), client.getReplyCode())); |
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} |
109 | 0 | if (logger.isDebugEnabled()) |
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{ |
111 | 0 | logger.debug("Deleted file " + file.getName()); |
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} |
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} |
114 | 0 | } |
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@Override |
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protected void initializeMessageFactory() throws InitialisationException |
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{ |
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122 | 0 | } |
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protected FtpMuleMessageFactory createMuleMessageFactory(FTPClient client) throws CreateException |
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{ |
126 | 0 | FtpMuleMessageFactory factory = (FtpMuleMessageFactory) createMuleMessageFactory(); |
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|
128 | 0 | factory.setStreaming(false); |
129 | 0 | factory.setFtpClient(client); |
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|
131 | 0 | return factory; |
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} |
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protected FTPFile prepareFile(FTPClient client, FTPFile file) throws IOException |
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{ |
136 | 0 | return file; |
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} |
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protected FTPFile findFileToProcess(FTPClient client) throws Exception |
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{ |
141 | 0 | FTPListParseEngine engine = client.initiateListParsing(); |
142 | 0 | FTPFile[] files = null; |
143 | 0 | while (engine.hasNext()) |
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{ |
145 | 0 | files = engine.getNext(FTP_LIST_PAGE_SIZE); |
146 | 0 | if (files == null) |
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{ |
148 | 0 | break; |
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} |
150 | 0 | FilenameFilter filenameFilter = getFilenameFilter(); |
151 | 0 | for (int i = 0; i < files.length; i++) |
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{ |
153 | 0 | FTPFile file = files[i]; |
154 | 0 | if (file.isFile()) |
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{ |
156 | 0 | if (filenameFilter.accept(null, file.getName())) |
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{ |
158 | 0 | if (connector.validateFile(file)) |
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{ |
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161 | 0 | return file; |
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} |
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} |
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} |
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} |
166 | 0 | } |
167 | 0 | if (!FTPReply.isPositiveCompletion(client.getReplyCode())) |
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{ |
169 | 0 | throw new IOException("Ftp error: " + client.getReplyCode()); |
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} |
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172 | 0 | return null; |
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} |
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protected FTPFile[] listFiles(FTPClient client) throws IOException |
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{ |
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178 | 0 | return null; |
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} |
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protected FilenameFilter getFilenameFilter() |
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{ |
183 | 0 | if (endpoint.getFilter() instanceof FilenameFilter) |
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{ |
185 | 0 | return (FilenameFilter) endpoint.getFilter(); |
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} |
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188 | 0 | return new AcceptAllFilenameFilter(); |
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} |
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private static class AcceptAllFilenameFilter implements FilenameFilter |
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{ |
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public AcceptAllFilenameFilter() |
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{ |
195 | 0 | super(); |
196 | 0 | } |
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public boolean accept(File dir, String name) |
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{ |
200 | 0 | return true; |
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} |
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} |
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} |