001package org.eclipse.aether.transport.wagon;
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 java.io.ByteArrayInputStream;
023import java.io.ByteArrayOutputStream;
024import java.io.File;
025import java.io.InputStream;
026import java.io.OutputStream;
027import java.net.URI;
028import java.nio.charset.StandardCharsets;
029import java.util.Map;
030import java.util.Properties;
031
032import org.apache.maven.wagon.AbstractWagon;
033import org.apache.maven.wagon.ConnectionException;
034import org.apache.maven.wagon.InputData;
035import org.apache.maven.wagon.OutputData;
036import org.apache.maven.wagon.ResourceDoesNotExistException;
037import org.apache.maven.wagon.TransferFailedException;
038import org.apache.maven.wagon.authentication.AuthenticationException;
039import org.apache.maven.wagon.authorization.AuthorizationException;
040import org.apache.maven.wagon.events.TransferEvent;
041import org.apache.maven.wagon.resource.Resource;
042
043/**
044 */
045public class MemWagon
046    extends AbstractWagon
047    implements Configurable
048{
049
050    private Map<String, String> fs;
051
052    private Properties headers;
053
054    private Object config;
055
056    public void setConfiguration( Object config )
057    {
058        this.config = config;
059    }
060
061    public Object getConfiguration()
062    {
063        return config;
064    }
065
066    public void setHttpHeaders( Properties httpHeaders )
067    {
068        headers = httpHeaders;
069    }
070
071    @Override
072    protected void openConnectionInternal()
073        throws ConnectionException, AuthenticationException
074    {
075        fs =
076            MemWagonUtils.openConnection( this, getAuthenticationInfo(),
077                                          getProxyInfo( "mem", getRepository().getHost() ), headers );
078    }
079
080    @Override
081    protected void closeConnection()
082        throws ConnectionException
083    {
084        fs = null;
085    }
086
087    private String getData( String resource )
088    {
089        return fs.get( URI.create( resource ).getSchemeSpecificPart() );
090    }
091
092    @Override
093    public boolean resourceExists( String resourceName )
094        throws TransferFailedException, AuthorizationException
095    {
096        String data = getData( resourceName );
097        return data != null;
098    }
099
100    @Override
101    public void get( String resourceName, File destination )
102        throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException
103    {
104        getIfNewer( resourceName, destination, 0 );
105    }
106
107    @Override
108    public boolean getIfNewer( String resourceName, File destination, long timestamp )
109        throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException
110    {
111        Resource resource = new Resource( resourceName );
112        fireGetInitiated( resource, destination );
113        resource.setLastModified( timestamp );
114        getTransfer( resource, destination, getInputStream( resource ) );
115        return true;
116    }
117
118    protected InputStream getInputStream( Resource resource )
119        throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException
120    {
121        InputData inputData = new InputData();
122        inputData.setResource( resource );
123        try
124        {
125            fillInputData( inputData );
126        }
127        catch ( TransferFailedException | AuthorizationException | ResourceDoesNotExistException e )
128        {
129            fireTransferError( resource, e, TransferEvent.REQUEST_GET );
130            cleanupGetTransfer( resource );
131            throw e;
132        }
133        finally
134        {
135            if ( inputData.getInputStream() == null )
136            {
137                cleanupGetTransfer( resource );
138            }
139        }
140        return inputData.getInputStream();
141    }
142
143    protected void fillInputData( InputData inputData )
144        throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException
145    {
146        String data = getData( inputData.getResource().getName() );
147        if ( data == null )
148        {
149            throw new ResourceDoesNotExistException( "Missing resource: " + inputData.getResource().getName() );
150        }
151        byte[] bytes = data.getBytes( StandardCharsets.UTF_8 );
152        inputData.getResource().setContentLength( bytes.length );
153        inputData.setInputStream( new ByteArrayInputStream( bytes ) );
154    }
155
156    @Override
157    public void put( File source, String resourceName )
158        throws TransferFailedException, ResourceDoesNotExistException, AuthorizationException
159    {
160        Resource resource = new Resource( resourceName );
161        firePutInitiated( resource, source );
162        resource.setContentLength( source.length() );
163        resource.setLastModified( source.lastModified() );
164        OutputStream os = getOutputStream( resource );
165        putTransfer( resource, source, os, true );
166    }
167
168    protected OutputStream getOutputStream( Resource resource )
169        throws TransferFailedException
170    {
171        OutputData outputData = new OutputData();
172        outputData.setResource( resource );
173        try
174        {
175            fillOutputData( outputData );
176        }
177        catch ( TransferFailedException e )
178        {
179            fireTransferError( resource, e, TransferEvent.REQUEST_PUT );
180            throw e;
181        }
182        finally
183        {
184            if ( outputData.getOutputStream() == null )
185            {
186                cleanupPutTransfer( resource );
187            }
188        }
189
190        return outputData.getOutputStream();
191    }
192
193    protected void fillOutputData( OutputData outputData )
194        throws TransferFailedException
195    {
196        outputData.setOutputStream( new ByteArrayOutputStream() );
197    }
198
199    @Override
200    protected void finishPutTransfer( Resource resource, InputStream input, OutputStream output )
201        throws TransferFailedException, AuthorizationException, ResourceDoesNotExistException
202    {
203        String data = new String( ( (ByteArrayOutputStream) output ).toByteArray(), StandardCharsets.UTF_8 );
204        fs.put( URI.create( resource.getName() ).getSchemeSpecificPart(), data );
205    }
206
207}