| package org.apache.maven.repository.internal; |
| |
| /* |
| * 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 org.apache.maven.artifact.repository.metadata.Metadata; |
| 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.ReaderFactory; |
| import org.codehaus.plexus.util.WriterFactory; |
| import org.codehaus.plexus.util.xml.pull.XmlPullParserException; |
| import org.eclipse.aether.RepositoryException; |
| import org.eclipse.aether.metadata.AbstractMetadata; |
| import org.eclipse.aether.metadata.MergeableMetadata; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.io.Writer; |
| import java.util.Collections; |
| import java.util.Date; |
| import java.util.Map; |
| |
| /** |
| * @author Benjamin Bentmann |
| */ |
| abstract class MavenMetadata |
| extends AbstractMetadata |
| implements MergeableMetadata |
| { |
| |
| static final String MAVEN_METADATA_XML = "maven-metadata.xml"; |
| |
| protected Metadata metadata; |
| |
| private final File file; |
| |
| protected final Date timestamp; |
| |
| private boolean merged; |
| |
| protected MavenMetadata( Metadata metadata, File file, Date timestamp ) |
| { |
| this.metadata = metadata; |
| this.file = file; |
| this.timestamp = timestamp; |
| } |
| |
| public String getType() |
| { |
| return MAVEN_METADATA_XML; |
| } |
| |
| public File getFile() |
| { |
| return file; |
| } |
| |
| public void merge( File existing, File result ) |
| throws RepositoryException |
| { |
| Metadata recessive = read( existing ); |
| |
| merge( recessive ); |
| |
| write( result, metadata ); |
| |
| merged = true; |
| } |
| |
| public boolean isMerged() |
| { |
| return merged; |
| } |
| |
| protected abstract void merge( Metadata recessive ); |
| |
| static Metadata read( File metadataFile ) |
| throws RepositoryException |
| { |
| if ( metadataFile.length() <= 0 ) |
| { |
| return new Metadata(); |
| } |
| |
| try ( Reader reader = ReaderFactory.newXmlReader( metadataFile ) ) |
| { |
| return new MetadataXpp3Reader().read( reader, false ); |
| } |
| catch ( IOException e ) |
| { |
| throw new RepositoryException( "Could not read metadata " + metadataFile + ": " + e.getMessage(), e ); |
| } |
| catch ( XmlPullParserException e ) |
| { |
| throw new RepositoryException( "Could not parse metadata " + metadataFile + ": " + e.getMessage(), e ); |
| } |
| } |
| |
| private void write( File metadataFile, Metadata metadata ) |
| throws RepositoryException |
| { |
| metadataFile.getParentFile().mkdirs(); |
| try ( Writer writer = WriterFactory.newXmlWriter( metadataFile ) ) |
| { |
| new MetadataXpp3Writer().write( writer, metadata ); |
| } |
| catch ( IOException e ) |
| { |
| throw new RepositoryException( "Could not write metadata " + metadataFile + ": " + e.getMessage(), e ); |
| } |
| } |
| |
| public Map<String, String> getProperties() |
| { |
| return Collections.emptyMap(); |
| } |
| |
| @Override |
| public org.eclipse.aether.metadata.Metadata setProperties( Map<String, String> properties ) |
| { |
| return this; |
| } |
| |
| } |