mirror of https://github.com/apache/maven.git
o moving the snapshot handling to maven-artifact
git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@163455 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jason van Zyl
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defeadfd09
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package org.apache.maven.artifact;
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/* ====================================================================
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* Copyright 2001-2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* ====================================================================
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*/
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import org.apache.maven.artifact.repository.ArtifactRepository;
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import org.apache.maven.artifact.request.ArtifactRequestTransformation;
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import org.apache.maven.artifact.resolver.ArtifactResolver;
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import org.codehaus.plexus.util.FileUtils;
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import java.io.File;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Map;
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import java.util.Set;
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import java.util.TimeZone;
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/**
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* @author <a href="mailto:mmaczka@interia.pl">Michal Maczka</a>
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* @version $Id$
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*/
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public class SnapshotRequestTransformation
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implements ArtifactRequestTransformation
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{
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private ArtifactResolver artifactResolver;
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public Artifact transform( Artifact artifact,
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ArtifactRepository localRepository,
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Set repositories,
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Map parameters )
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throws Exception
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{
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Date localVersion = getLocalVersion( artifact, localRepository );
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Date remoteVersion = getRemoteVersion( artifact, repositories, localRepository );
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if ( remoteVersion != null )
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{
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//if local version is unknown (null) it means that
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//we don't have this file locally. so we will be happy
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// to have any snapshot.
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// we wil download in two cases:
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// a) we don't have any snapot in local repo
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// b) we have found newer version in remote repository
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if ( localVersion == null || localVersion.before( remoteVersion ) )
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{
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// here we know that we have artifact like foo-1.2-SNAPSHOT.jar
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// and the remote timestamp is something like 20010304.121212
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// so we might as well fetch foo-1.2-20010304.121212.jar
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// but we are just going to fetch foo-1.2-SNAPSHOT.jar.
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// We can change the strategy which is used here later on
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// @todo we will delete old file first.
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//it is not really a right thing to do. Artifact Dowloader should
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// fetch to temprary file and replace the old file with the new
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// one once download was finished
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artifact.getFile().delete();
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artifactResolver.resolve( artifact, repositories, localRepository );
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File snapshotVersionFile = getSnapshotVersionFile( artifact, localRepository );
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String timestamp = getTimestamp( remoteVersion );
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// delete old one
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if ( snapshotVersionFile.exists() )
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{
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snapshotVersionFile.delete();
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}
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FileUtils.fileWrite( snapshotVersionFile.getPath(), timestamp );
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}
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}
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return artifact;
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}
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private File getSnapshotVersionFile( Artifact artifact, ArtifactRepository localRepository )
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{
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return null;
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//return new File( localRepository.fullArtifactPath( artifact ) );
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}
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private Date getRemoteVersion( Artifact artifact, Set remoteRepositories, ArtifactRepository localRepository )
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throws Exception
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{
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Date retValue = null;
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artifactResolver.resolve( artifact, remoteRepositories, localRepository );
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String timestamp = FileUtils.fileRead( artifact.getPath() );
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retValue = parseTimestamp( timestamp );
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return retValue;
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}
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private Date getLocalVersion( Artifact artifact, ArtifactRepository localRepository )
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{
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//assert artifact.exists();
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Date retValue = null;
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try
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{
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File file = getSnapshotVersionFile( artifact, localRepository );
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if ( file.exists() )
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{
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String timestamp = FileUtils.fileRead( file );
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retValue = parseTimestamp( timestamp );
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}
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}
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catch ( Exception e )
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{
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// ignore
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}
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if ( retValue == null )
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{
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//try "traditional method" used in maven1 for obtaining snapshot version
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File file = artifact.getFile();
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if ( file.exists() )
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{
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retValue = new Date( file.lastModified() );
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//@todo we should "normalize" the time.
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/*TimeZone gmtTimeZone = TimeZone.getTimeZone( "GMT" );
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TimeZone userTimeZone = TimeZone.getDefault();
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long diff =
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*/
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}
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}
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return retValue;
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}
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private final static String DATE_FORMAT = "yyyyMMdd.HHmmss";
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private static SimpleDateFormat getFormatter()
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{
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SimpleDateFormat formatter = new SimpleDateFormat( DATE_FORMAT );
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formatter.setTimeZone( TimeZone.getTimeZone( "GMT" ) );
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return formatter;
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}
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public static String getTimestamp
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()
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{
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Date now = new Date();
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SimpleDateFormat formatter = getFormatter();
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String retValue = formatter.format( now );
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return retValue;
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}
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public static Date parseTimestamp ( String timestamp )
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throws ParseException
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{
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Date retValue = getFormatter().parse( timestamp );
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return retValue;
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}
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public static String getTimestamp ( Date snapshotVersion )
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{
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String retValue = getFormatter().format( snapshotVersion );
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return retValue;
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}
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}
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