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/*
* Copyright 2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.mockftpserver.stub.command;
import org.mockftpserver.core.command.Command;
import org.mockftpserver.core.command.CommandHandler;
import org.mockftpserver.core.command.InvocationRecord;
import org.mockftpserver.core.session.Session;
import org.mockftpserver.core.util.Assert;
/**
* CommandHandler for the RETR (Retrieve) command. Return the configured file contents on the data
* connection, along with two replies on the control connection: a reply code of 150 and
* another of 226. By default, return an empty file (i.e., a zero-length byte[]). You can
* customize the returned file contents by setting the <code>fileContents</code> property,
* specified either as a String or as a byte array.
* <p/>
* Each invocation record stored by this CommandHandler includes the following data element key/values:
* <ul>
* <li>{@link #PATHNAME_KEY} ("pathname") - the pathname of the file submitted on the invocation (the first command parameter)
* </ul>
*
* @author Chris Mair
* @version $Revision$ - $Date$
*/
public class RetrCommandHandler extends AbstractStubDataCommandHandler implements CommandHandler {
public static final String PATHNAME_KEY = "pathname";
private byte[] fileContents = new byte[0];
/**
* Create new uninitialized instance
*/
public RetrCommandHandler() {
}
/**
* Create new instance using the specified fileContents
*
* @param fileContents - the file contents
* @throws org.mockftpserver.core.util.AssertFailedException
* - if the fileContents is null
*/
public RetrCommandHandler(String fileContents) {
setFileContents(fileContents);
}
/**
* Create new instance using the specified fileContents
*
* @param fileContents - the file contents
* @throws org.mockftpserver.core.util.AssertFailedException
* - if the fileContents is null
*/
public RetrCommandHandler(byte[] fileContents) {
setFileContents(fileContents);
}
/**
* @see org.mockftpserver.stub.command.AbstractStubDataCommandHandler#beforeProcessData(org.mockftpserver.core.command.Command, org.mockftpserver.core.session.Session, org.mockftpserver.core.command.InvocationRecord)
*/
protected void beforeProcessData(Command command, Session session, InvocationRecord invocationRecord) throws Exception {
String filename = command.getRequiredParameter(0);
invocationRecord.set(PATHNAME_KEY, filename);
}
/**
* @see org.mockftpserver.stub.command.AbstractStubDataCommandHandler#processData(org.mockftpserver.core.command.Command, org.mockftpserver.core.session.Session, org.mockftpserver.core.command.InvocationRecord)
*/
protected void processData(Command command, Session session, InvocationRecord invocationRecord) {
LOG.info("Sending " + fileContents.length + " bytes");
session.sendData(fileContents, fileContents.length);
}
/**
* Set the file contents to return from subsequent command invocations
*
* @param fileContents - the fileContents to set
* @throws org.mockftpserver.core.util.AssertFailedException
* - if the fileContents is null
*/
public void setFileContents(String fileContents) {
Assert.notNull(fileContents, "fileContents");
setFileContents(fileContents.getBytes());
}
/**
* Set the file contents to return from subsequent command invocations
*
* @param fileContents - the file contents
* @throws org.mockftpserver.core.util.AssertFailedException
* - if the fileContents is null
*/
public void setFileContents(byte[] fileContents) {
Assert.notNull(fileContents, "fileContents");
this.fileContents = fileContents;
}
}
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