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package org.apache.maven.artifact.repository.metadata;
/*
* 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.File;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.metadata.ArtifactMetadata;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.repository.ArtifactRepositoryPolicy;
import org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Reader;
import org.apache.maven.artifact.repository.metadata.io.xpp3.MetadataXpp3Writer;
import org.codehaus.plexus.util.IOUtil;
import org.codehaus.plexus.util.ReaderFactory;
import org.codehaus.plexus.util.WriterFactory;
import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
/**
* Shared methods of the repository metadata handling.
*
* @author <a href="mailto:brett@apache.org">Brett Porter</a>
*/
public abstract class AbstractRepositoryMetadata
implements RepositoryMetadata
{
private Metadata metadata;
protected AbstractRepositoryMetadata( Metadata metadata )
{
this.metadata = metadata;
}
public String getRemoteFilename()
{
return "maven-metadata.xml";
}
public String getLocalFilename( ArtifactRepository repository )
{
return "maven-metadata-" + repository.getKey() + ".xml";
}
public void storeInLocalRepository( ArtifactRepository localRepository,
ArtifactRepository remoteRepository )
throws RepositoryMetadataStoreException
{
try
{
updateRepositoryMetadata( localRepository, remoteRepository );
}
catch ( IOException e )
{
throw new RepositoryMetadataStoreException( "Error updating group repository metadata", e );
}
catch ( XmlPullParserException e )
{
throw new RepositoryMetadataStoreException( "Error updating group repository metadata", e );
}
}
protected void updateRepositoryMetadata( ArtifactRepository localRepository,
ArtifactRepository remoteRepository )
throws IOException, XmlPullParserException
{
MetadataXpp3Reader mappingReader = new MetadataXpp3Reader();
Metadata metadata = null;
File metadataFile = new File( localRepository.getBasedir(),
localRepository.pathOfLocalRepositoryMetadata( this, remoteRepository ) );
if ( metadataFile.length() == 0 )
{
if ( !metadataFile.delete() )
{
// sleep for 10ms just in case this is windows holding a file lock
try
{
Thread.sleep( 10 );
}
catch ( InterruptedException e )
{
// ignore
}
metadataFile.delete(); // if this fails, forget about it, we'll try to overwrite it anyway so no need
// to delete on exit
}
}
else if ( metadataFile.exists() )
{
Reader reader = null;
try
{
reader = ReaderFactory.newXmlReader( metadataFile );
metadata = mappingReader.read( reader, false );
}
finally
{
IOUtil.close( reader );
}
}
boolean changed;
// If file could not be found or was not valid, start from scratch
if ( metadata == null )
{
metadata = this.metadata;
changed = true;
}
else
{
changed = metadata.merge( this.metadata );
}
// beware meta-versions!
String version = metadata.getVersion();
if ( version != null && ( Artifact.LATEST_VERSION.equals( version ) || Artifact.RELEASE_VERSION.equals(
version ) ) )
{
// meta-versions are not valid <version/> values...don't write them.
metadata.setVersion( null );
}
if ( changed || !metadataFile.exists() )
{
Writer writer = null;
try
{
metadataFile.getParentFile().mkdirs();
writer = WriterFactory.newXmlWriter( metadataFile );
MetadataXpp3Writer mappingWriter = new MetadataXpp3Writer();
mappingWriter.write( writer, metadata );
}
finally
{
IOUtil.close( writer );
}
}
else
{
metadataFile.setLastModified( System.currentTimeMillis() );
}
}
public String toString()
{
return "repository metadata for: \'" + getKey() + "\'";
}
protected static Metadata createMetadata( Artifact artifact,
Versioning versioning )
{
Metadata metadata = new Metadata();
metadata.setGroupId( artifact.getGroupId() );
metadata.setArtifactId( artifact.getArtifactId() );
metadata.setVersion( artifact.getVersion() );
metadata.setVersioning( versioning );
return metadata;
}
protected static Versioning createVersioning( Snapshot snapshot )
{
Versioning versioning = new Versioning();
versioning.setSnapshot( snapshot );
versioning.updateTimestamp();
return versioning;
}
public void setMetadata( Metadata metadata )
{
this.metadata = metadata;
}
public Metadata getMetadata()
{
return metadata;
}
public void merge( org.apache.maven.repository.legacy.metadata.ArtifactMetadata metadata )
{
// TODO: not sure that it should assume this, maybe the calls to addMetadata should pre-merge, then artifact replaces?
AbstractRepositoryMetadata repoMetadata = (AbstractRepositoryMetadata) metadata;
this.metadata.merge( repoMetadata.getMetadata() );
}
public void merge( ArtifactMetadata metadata )
{
// TODO: not sure that it should assume this, maybe the calls to addMetadata should pre-merge, then artifact replaces?
AbstractRepositoryMetadata repoMetadata = (AbstractRepositoryMetadata) metadata;
this.metadata.merge( repoMetadata.getMetadata() );
}
public String extendedToString()
{
StringBuilder buffer = new StringBuilder();
buffer.append( "\nRepository Metadata\n--------------------------" );
buffer.append( "\nGroupId: " ).append( getGroupId() );
buffer.append( "\nArtifactId: " ).append( getArtifactId() );
buffer.append( "\nMetadata Type: " ).append( getClass().getName() );
return buffer.toString();
}
public int getNature()
{
return RELEASE;
}
public ArtifactRepositoryPolicy getPolicy( ArtifactRepository repository )
{
int nature = getNature();
if ( ( nature & RepositoryMetadata.RELEASE_OR_SNAPSHOT ) == RepositoryMetadata.RELEASE_OR_SNAPSHOT )
{
ArtifactRepositoryPolicy policy = new ArtifactRepositoryPolicy( repository.getReleases() );
policy.merge( repository.getSnapshots() );
return policy;
}
else if ( ( nature & RepositoryMetadata.SNAPSHOT ) != 0 )
{
return repository.getSnapshots();
}
else
{
return repository.getReleases();
}
}
}
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