| package org.apache.maven.archiva.web.tags; |
| |
| /* |
| * 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.util.ArrayList; |
| import java.util.List; |
| import java.util.Stack; |
| |
| import javax.servlet.jsp.PageContext; |
| |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.maven.archiva.common.ArchivaException; |
| import org.apache.maven.archiva.dependency.DependencyGraphFactory; |
| import org.apache.maven.archiva.dependency.graph.DependencyGraph; |
| import org.apache.maven.archiva.dependency.graph.DependencyGraphBuilder; |
| import org.apache.maven.archiva.dependency.graph.DependencyGraphEdge; |
| import org.apache.maven.archiva.dependency.graph.DependencyGraphNode; |
| import org.apache.maven.archiva.dependency.graph.GraphTaskException; |
| import org.apache.maven.archiva.dependency.graph.walk.BaseVisitor; |
| import org.apache.maven.archiva.dependency.graph.walk.DependencyGraphWalker; |
| import org.apache.maven.archiva.dependency.graph.walk.WalkDepthFirstSearch; |
| import org.apache.maven.archiva.model.ArtifactReference; |
| import org.apache.maven.archiva.model.DependencyScope; |
| import org.apache.maven.archiva.model.Keys; |
| import org.apache.maven.archiva.model.VersionedReference; |
| import org.codehaus.plexus.personality.plexus.lifecycle.phase.Initializable; |
| import org.codehaus.plexus.personality.plexus.lifecycle.phase.InitializationException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * DependencyTree |
| * |
| * @author <a href="mailto:joakime@apache.org">Joakim Erdfelt</a> |
| * @version $Id$ |
| * |
| * @plexus.component role="org.apache.maven.archiva.web.tags.DependencyTree" |
| */ |
| public class DependencyTree |
| implements Initializable |
| { |
| private Logger log = LoggerFactory.getLogger( DependencyTree.class ); |
| |
| /** |
| * @plexus.requirement |
| * role="org.apache.maven.archiva.dependency.graph.DependencyGraphBuilder" |
| * role-hint="project-model" |
| */ |
| private DependencyGraphBuilder graphBuilder; |
| |
| private DependencyGraphFactory graphFactory = new DependencyGraphFactory(); |
| |
| public class TreeEntry |
| { |
| private String pre = ""; |
| |
| private String post = ""; |
| |
| private ArtifactReference artifact; |
| |
| public void setArtifact( ArtifactReference artifact ) |
| { |
| this.artifact = artifact; |
| } |
| |
| public ArtifactReference getArtifact() |
| { |
| return artifact; |
| } |
| |
| public String getPost() |
| { |
| return post; |
| } |
| |
| public void setPost( String post ) |
| { |
| this.post = post; |
| } |
| |
| public String getPre() |
| { |
| return pre; |
| } |
| |
| public void setPre( String pre ) |
| { |
| this.pre = pre; |
| } |
| |
| public void appendPre( String string ) |
| { |
| this.pre += string; |
| } |
| |
| public void appendPost( String string ) |
| { |
| this.post += string; |
| } |
| } |
| |
| public List<TreeEntry> gatherTreeList( String groupId, String artifactId, String modelVersion, String nodevar, |
| PageContext pageContext ) throws ArchivaException |
| { |
| if ( StringUtils.isBlank( groupId ) ) |
| { |
| String emsg = "Error generating dependency tree [" + Keys.toKey( groupId, artifactId, modelVersion ) |
| + "]: groupId is blank."; |
| log.error( emsg ); |
| throw new ArchivaException( emsg ); |
| } |
| |
| if ( StringUtils.isBlank( artifactId ) ) |
| { |
| String emsg = "Error generating dependency tree [" + Keys.toKey( groupId, artifactId, modelVersion ) |
| + "]: artifactId is blank."; |
| log.error( emsg ); |
| throw new ArchivaException( emsg ); |
| } |
| |
| if ( StringUtils.isBlank( modelVersion ) ) |
| { |
| String emsg = "Error generating dependency tree [" + Keys.toKey( groupId, artifactId, modelVersion ) |
| + "]: version is blank."; |
| log.error( emsg ); |
| throw new ArchivaException( emsg ); |
| } |
| |
| DependencyGraph graph = fetchGraph( groupId, artifactId, modelVersion ); |
| |
| if ( graph == null ) |
| { |
| throw new ArchivaException( "Graph is unexpectedly null." ); |
| } |
| |
| TreeListVisitor treeListVisitor = new TreeListVisitor(); |
| DependencyGraphWalker walker = new WalkDepthFirstSearch(); |
| walker.visit( graph, treeListVisitor ); |
| |
| return treeListVisitor.getList(); |
| } |
| |
| class TreeListVisitor |
| extends BaseVisitor |
| { |
| private List<TreeEntry> list; |
| |
| private int walkDepth; |
| |
| private int outputDepth; |
| |
| private Stack<TreeEntry> entryStack = new Stack<TreeEntry>(); |
| |
| private TreeEntry currentEntry; |
| |
| public TreeListVisitor() |
| { |
| this.list = new ArrayList<TreeEntry>(); |
| } |
| |
| public List<TreeEntry> getList() |
| { |
| return this.list; |
| } |
| |
| public void discoverGraph( DependencyGraph graph ) |
| { |
| super.discoverGraph( graph ); |
| this.list.clear(); |
| this.entryStack.clear(); |
| walkDepth = 0; |
| outputDepth = -1; |
| } |
| |
| public void discoverNode( DependencyGraphNode node ) |
| { |
| super.discoverNode( node ); |
| currentEntry = new TreeEntry(); |
| |
| while ( walkDepth > outputDepth ) |
| { |
| currentEntry.appendPre( "<ul>" ); |
| outputDepth++; |
| } |
| currentEntry.appendPre( "<li>" ); |
| currentEntry.setArtifact( node.getArtifact() ); |
| currentEntry.appendPost( "</li>" ); |
| this.list.add( currentEntry ); |
| this.entryStack.push( currentEntry ); |
| } |
| |
| public void finishNode( DependencyGraphNode node ) |
| { |
| super.finishNode( node ); |
| |
| while ( walkDepth < outputDepth ) |
| { |
| currentEntry.appendPost( "</ul>" ); |
| outputDepth--; |
| } |
| |
| this.entryStack.pop(); |
| } |
| |
| public void discoverEdge( DependencyGraphEdge edge ) |
| { |
| super.discoverEdge( edge ); |
| walkDepth++; |
| } |
| |
| public void finishEdge( DependencyGraphEdge edge ) |
| { |
| super.finishEdge( edge ); |
| walkDepth--; |
| } |
| } |
| |
| private DependencyGraph fetchGraph( String groupId, String artifactId, String modelVersion ) |
| throws ArchivaException |
| { |
| // TODO Cache the results to disk, in XML format, in the same place as the artifact is located. |
| |
| VersionedReference projectRef = new VersionedReference(); |
| projectRef.setGroupId( groupId ); |
| projectRef.setArtifactId( artifactId ); |
| projectRef.setVersion( modelVersion ); |
| |
| try |
| { |
| DependencyGraph depGraph = graphFactory.getGraph( projectRef ); |
| |
| return depGraph; |
| } |
| catch ( GraphTaskException e ) |
| { |
| String emsg = "Unable to generate graph for [" + Keys.toKey( projectRef ) + "] : " + e.getMessage(); |
| log.warn( emsg, e ); |
| throw new ArchivaException( emsg, e ); |
| } |
| } |
| |
| public void initialize() |
| throws InitializationException |
| { |
| this.graphFactory.setGraphBuilder( graphBuilder ); |
| this.graphFactory.setDesiredScope( DependencyScope.TEST ); |
| } |
| } |