org.apache.maven.wagon.providers.http.HttpWagon.java Source code

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Here is the source code for org.apache.maven.wagon.providers.http.HttpWagon.java

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package org.apache.maven.wagon.providers.http;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.maven.wagon.ResourceDoesNotExistException;
import org.apache.maven.wagon.TransferFailedException;
import org.apache.maven.wagon.authorization.AuthorizationException;
import org.apache.maven.wagon.shared.http.AbstractHttpClientWagon;
import org.apache.maven.wagon.shared.http.HtmlFileListParser;

/**
 * @author <a href="michal.maczka@dimatics.com">Michal Maczka</a>
 * @version $Id: HttpWagon.java 745730 2009-02-19 05:15:51Z brett $
 */
public class HttpWagon extends AbstractHttpClientWagon {
    public List getFileList(String destinationDirectory)
            throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException {
        if (destinationDirectory.length() > 0 && !destinationDirectory.endsWith("/")) {
            destinationDirectory += "/";
        }

        String url = getRepository().getUrl() + "/" + destinationDirectory;

        GetMethod getMethod = new GetMethod(url);

        try {
            int statusCode = execute(getMethod);

            fireTransferDebug(url + " - Status code: " + statusCode);

            // TODO [BP]: according to httpclient docs, really should swallow the output on error. verify if that is required
            switch (statusCode) {
            case HttpStatus.SC_OK:
                break;

            case SC_NULL:
                throw new TransferFailedException("Failed to transfer file: ");

            case HttpStatus.SC_FORBIDDEN:
                throw new AuthorizationException("Access denied to: " + url);

            case HttpStatus.SC_UNAUTHORIZED:
                throw new AuthorizationException("Not authorized.");

            case HttpStatus.SC_PROXY_AUTHENTICATION_REQUIRED:
                throw new AuthorizationException("Not authorized by proxy.");

            case HttpStatus.SC_NOT_FOUND:
                throw new ResourceDoesNotExistException("File: " + url + " does not exist");

                //add more entries here
            default:
                throw new TransferFailedException(
                        "Failed to transfer file: " + url + ". Return code is: " + statusCode);
            }

            InputStream is = null;

            is = getMethod.getResponseBodyAsStream();

            return HtmlFileListParser.parseFileList(url, is);
        } catch (IOException e) {
            throw new TransferFailedException("Could not read response body.", e);
        } finally {
            getMethod.releaseConnection();
        }
    }
}