001package org.apache.maven.wagon.providers.http;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *   http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import org.apache.http.HttpEntity;
023import org.apache.http.HttpException;
024import org.apache.http.HttpStatus;
025import org.apache.http.client.methods.CloseableHttpResponse;
026import org.apache.http.client.methods.HttpGet;
027import org.apache.maven.wagon.ResourceDoesNotExistException;
028import org.apache.maven.wagon.TransferFailedException;
029import org.apache.maven.wagon.authorization.AuthorizationException;
030import org.apache.maven.wagon.shared.http.AbstractHttpClientWagon;
031import org.apache.maven.wagon.shared.http.HtmlFileListParser;
032import org.apache.maven.wagon.shared.http.HttpMessageUtils;
033
034import java.io.IOException;
035import java.util.Collections;
036import java.util.List;
037
038import static org.apache.maven.wagon.shared.http.HttpMessageUtils.formatResourceDoesNotExistMessage;
039import static org.apache.maven.wagon.shared.http.HttpMessageUtils.formatTransferDebugMessage;
040import static org.apache.maven.wagon.shared.http.HttpMessageUtils.formatTransferFailedMessage;
041
042/**
043 * @author <a href="michal.maczka@dimatics.com">Michal Maczka</a>
044 */
045public class HttpWagon
046    extends AbstractHttpClientWagon
047{
048
049    public List<String> getFileList( String destinationDirectory )
050        throws AuthorizationException, ResourceDoesNotExistException, TransferFailedException
051    {
052        return getFileList( getInitialBackoffSeconds(), destinationDirectory );
053    }
054
055    private List<String> getFileList( int wait, String destinationDirectory )
056        throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException
057    {
058        if ( destinationDirectory.length() > 0 && !destinationDirectory.endsWith( "/" ) )
059        {
060            destinationDirectory += "/";
061        }
062
063        String url = getRepository().getUrl() + "/" + destinationDirectory;
064
065        HttpGet getMethod = new HttpGet( url );
066
067        try
068        {
069            CloseableHttpResponse response = execute( getMethod );
070            try
071            {
072                String reasonPhrase = response.getStatusLine().getReasonPhrase();
073                int statusCode = response.getStatusLine().getStatusCode();
074
075                fireTransferDebug( formatTransferDebugMessage( url, statusCode, reasonPhrase, getProxyInfo() ) );
076
077                switch ( statusCode )
078                {
079                    case HttpStatus.SC_OK:
080                        break;
081
082                    case HttpStatus.SC_FORBIDDEN:
083                    case HttpStatus.SC_UNAUTHORIZED:
084                    case HttpStatus.SC_PROXY_AUTHENTICATION_REQUIRED:
085                        throw new AuthorizationException( HttpMessageUtils.formatAuthorizationMessage( url, statusCode,
086                                reasonPhrase, getProxyInfo() ) );
087
088                    case HttpStatus.SC_NOT_FOUND:
089                        throw new ResourceDoesNotExistException( formatResourceDoesNotExistMessage( url, statusCode,
090                                reasonPhrase, getProxyInfo() ) );
091
092                    case SC_TOO_MANY_REQUESTS:
093                        return getFileList( backoff( wait, url ), destinationDirectory );
094
095                    //add more entries here
096                    default:
097                        throw new TransferFailedException( formatTransferFailedMessage( url, statusCode, reasonPhrase,
098                                getProxyInfo() ) );
099                }
100                HttpEntity entity = response.getEntity();
101                if ( entity != null )
102                {
103                    return HtmlFileListParser.parseFileList( url, entity.getContent() );
104                }
105                else
106                {
107                    return Collections.emptyList();
108                }
109
110            }
111            finally
112            {
113                response.close();
114            }
115        }
116        catch ( IOException e )
117        {
118            throw new TransferFailedException( "Could not read response body.", e );
119        }
120        catch ( HttpException e )
121        {
122            throw new TransferFailedException( "Could not read response body.", e );
123        }
124        catch ( InterruptedException e )
125        {
126            throw new TransferFailedException( "Unable to wait for resource.", e );
127        }
128    }
129
130}