bundleplugin/src/main/java/org/apache/felix/bundleplugin/baseline/BaselinePlugin.java - onos-felix - Gitiles

 /*
  * 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.
  */
 package org.apache.felix.bundleplugin.baseline;

 import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.LineNumberReader;
 import java.io.StringReader;
 import java.util.Map;
 import java.util.Map.Entry;

 import org.codehaus.plexus.util.FileUtils;
 import org.codehaus.plexus.util.IOUtil;
 import org.codehaus.plexus.util.xml.PrettyPrintXMLWriter;
 import org.codehaus.plexus.util.xml.XMLWriter;
 import org.sonatype.plexus.build.incremental.BuildContext;

 import aQute.bnd.differ.Baseline.Info;
 import aQute.bnd.service.diff.Delta;
 import aQute.bnd.service.diff.Diff;
 import aQute.bnd.service.diff.Type;
 import aQute.bnd.version.Version;

 /**
  * BND Baseline check between two bundles.
  *
  * @goal baseline
  * @phase verify
  * @requiresDependencyResolution test
  * @threadSafe true
  * @since 2.4.1
  */
 public final class BaselinePlugin
     extends AbstractBaselinePlugin
 {

     private static final String TABLE_PATTERN = "%s %-50s %-10s %-10s %-10s %-10s %-10s";

     /**
      * An XML output file to render to <code>${project.build.directory}/baseline.xml</code>.
      *
      * @parameter expression="${project.build.directory}/baseline.xml"
      */
     private File xmlOutputFile;

     /**
      * Whether to log the results to the console or not, true by default.
      *
      * @parameter expression="${logResults}" default-value="true"
      */
     private boolean logResults;

     /**
      * @component
      */
     private BuildContext buildContext;

     private static final class Context {
         public FileWriter writer;
         public XMLWriter xmlWriter;
     }

     @Override
     protected Object init(final Object noContext)
     {
         if ( xmlOutputFile != null )
         {
             xmlOutputFile.getParentFile().mkdirs();
             try
             {
                 final Context ctx = new Context();
                 ctx.writer = new FileWriter( xmlOutputFile );
                 ctx.xmlWriter = new PrettyPrintXMLWriter( ctx.writer );
                 return ctx;
             }
             catch ( IOException e )
             {
                 getLog().warn( "No XML report will be produced, cannot write data to " + xmlOutputFile, e );
             }
         }
         return null;
     }

     @Override
     protected void close(final Object writer)
     {
         if ( writer != null )
         {
             try {

                 ((Context)writer).writer.close();
             }
             catch (IOException e)
             {
                 // ignore
             }
         }
     }
     @Override
     protected void startBaseline( Object context,
                                   String generationDate,
                                   String bundleName,
                                   String currentVersion,
                                   String previousVersion )
     {
         final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
         if ( isLoggingResults() )
         {
             log( "Baseline Report - Generated by Apache Felix Maven Bundle Plugin on %s based on Bnd - see http://www.aqute.biz/Bnd/Bnd",
                  generationDate );
             log( "Comparing bundle %s version %s to version %s", bundleName, currentVersion, previousVersion );
             log( "" );
             log( TABLE_PATTERN,
                  " ",
                  "PACKAGE_NAME",
                  "DELTA",
                  "CUR_VER",
                  "BASE_VER",
                  "REC_VER",
                  "WARNINGS",
                  "ATTRIBUTES" );
             log( TABLE_PATTERN,
                  "=",
                  "==================================================",
                  "==========",
                  "==========",
                  "==========",
                  "==========",
                  "==========",
                  "==========" );
         }

         if ( xmlWriter != null )
         {
             xmlWriter.startElement( "baseline" );
             xmlWriter.addAttribute( "version", "1.0.0" );
             xmlWriter.addAttribute( "vendor", "The Apache Software Foundation" );
             xmlWriter.addAttribute( "vendorURL", "http://www.apache.org/" );
             xmlWriter.addAttribute( "generator", "Apache Felix Maven Bundle Plugin" );
             xmlWriter.addAttribute( "generatorURL", "http://felix.apache.org/site/apache-felix-maven-bundle-plugin-bnd.html" );
             xmlWriter.addAttribute( "analyzer", "Bnd" );
             xmlWriter.addAttribute( "analyzerURL", "http://www.aqute.biz/Bnd/Bnd" );
             xmlWriter.addAttribute( "generatedOn", generationDate );
             xmlWriter.addAttribute( "bundleName", bundleName );
             xmlWriter.addAttribute( "currentVersion", currentVersion );
             xmlWriter.addAttribute( "previousVersion", previousVersion );
         }
     }

     @Override
     protected void startPackage( Object context,
                                  boolean mismatch,
                                  String name,
                                  String shortDelta,
                                  String delta,
                                  Version newerVersion,
                                  Version olderVersion,
                                  Version suggestedVersion,
                                  DiffMessage diffMessage,
                                  Map<String,String> attributes )
     {
         final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
         if ( isLoggingResults() )
         {
             log( TABLE_PATTERN,
                  mismatch ? '*' : shortDelta,
                  name,
                  delta,
                  newerVersion,
                  olderVersion,
                  suggestedVersion,
                  diffMessage != null ? diffMessage : '-',
                  attributes );
         }

         if ( xmlWriter != null )
         {
             xmlWriter.startElement( "package" );
             xmlWriter.addAttribute( "name", name );
             xmlWriter.addAttribute( "delta", delta );
             simpleElement( xmlWriter, "mismatch", String.valueOf( mismatch ) );
             simpleElement( xmlWriter, "newerVersion", newerVersion.toString() );
             simpleElement( xmlWriter, "olderVersion", olderVersion.toString() );
             if ( suggestedVersion != null )
             {
                 simpleElement( xmlWriter, "suggestedVersion", suggestedVersion.toString() );
             }

             if ( diffMessage != null )
             {
                 simpleElement( xmlWriter, diffMessage.getType().name(), diffMessage.getMessage() );
             }

             xmlWriter.startElement( "attributes" );
             if (attributes != null)
             {
                 for (Entry<String, String> attribute : attributes.entrySet())
                 {
                     String attributeName = attribute.getKey();
                     if (':' == attributeName.charAt(attributeName.length() - 1))
                     {
                         attributeName = attributeName.substring(0, attributeName.length() - 1);
                     }
                     String attributeValue = attribute.getValue();

                     xmlWriter.startElement(attributeName);
                     xmlWriter.writeText(attributeValue);
                     xmlWriter.endElement();
                 }
             }
             xmlWriter.endElement();
         }
     }

     @Override
     protected void startDiff( Object context, int depth, String type, String name, String delta, String shortDelta )
     {
         final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
         if ( isLoggingResults() )
         {
             log( "%-" + (depth * 4) + "s %s %s %s",
                  "",
                  shortDelta,
                  type,
                  name );
         }

         if ( xmlWriter != null )
         {
             xmlWriter.startElement( type );
             xmlWriter.addAttribute( "name", name );
             xmlWriter.addAttribute( "delta", delta );
         }
     }

     @Override
     protected void endDiff( Object context, int depth )
     {
         final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
         if ( xmlWriter != null )
         {
             xmlWriter.endElement();
         }
     }

     @Override
     protected void endPackage(Object context)
     {
         final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
         if ( isLoggingResults() )
         {
             log( "-----------------------------------------------------------------------------------------------------------" );
         }

         if ( xmlWriter != null )
         {
             xmlWriter.endElement();
         }
     }

     @Override
     protected void endBaseline(Object context)
     {
         final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
         if ( xmlWriter != null )
         {
             xmlWriter.endElement();
         }
     }

     private boolean isLoggingResults()
     {
         return logResults && getLog().isInfoEnabled();
     }

     private void log( String format, Object...args )
     {
         getLog().info( String.format( format, args ) );
     }

     private void simpleElement( XMLWriter xmlWriter, String name, String value )
     {
         xmlWriter.startElement( name );
         xmlWriter.writeText( value );
         xmlWriter.endElement();
     }

     @Override
     protected void reportErrors(final Info[] infos)
     throws IOException
     {
         for ( final Info info : infos )
         {
             // clear previous messages
             final FileMarker packageMarker = findMarkerLocationForPackage(info.packageName);

             if ( info.suggestedVersion != null )
             {
                 if ( info.newerVersion.compareTo( info.suggestedVersion ) > 0 )
                 {
                     final String msg = "Excessive version increase: detected " + info.newerVersion + ", suggested " + info.suggestedVersion;

                     this.buildContext.addMessage(packageMarker.file, packageMarker.line, packageMarker.col, msg, BuildContext.SEVERITY_WARNING, null);
                 }
                 else if ( info.newerVersion.compareTo( info.suggestedVersion ) < 0 )
                 {
                     final String msg = "Version increase required: detected " + info.newerVersion + ", suggested " + info.suggestedVersion;

                     this.buildContext.addMessage(packageMarker.file, packageMarker.line, packageMarker.col, msg, BuildContext.SEVERITY_ERROR, null);
                 }
             }

             if ( info.packageDiff.getDelta() == Delta.UNCHANGED && info.newerVersion.compareTo( info.suggestedVersion ) != 0 )
             {
                 final String msg = "Version has been increased but analysis detected no changes: detected " + info.newerVersion + ", suggested " + info.suggestedVersion;
                 this.buildContext.addMessage(packageMarker.file, packageMarker.line, packageMarker.col, msg, BuildContext.SEVERITY_WARNING, null);
             }
             generateStructuralChangeMarkers(info);
         }
     }

     private File getPackageFile(final String packageName)
     {
         final String sourceDir = this.project.getBuild().getSourceDirectory();
         final File packageDir = new File((sourceDir + '/' + packageName.replace('.', '/')).replace('/', File.separatorChar));

         return packageDir;
     }

     private File getSourceFile(final String className)
     {
         final String sourceDir = this.project.getBuild().getSourceDirectory();
         final File packageDir = new File((sourceDir + '/' + className.replace('.', '/') + ".java").replace('/', File.separatorChar));

         return packageDir;
     }

     private static final class FileMarker
     {
         public File file;
         public int  line;
         public int  col;
     }

     /**
      * Find marker location for a package
      * and clear old markers.
      */
     private FileMarker findMarkerLocationForPackage(final String packageName)
     throws IOException
     {
         final File packageDir = getPackageFile(packageName);
         this.buildContext.removeMessages(packageDir);

         final File packageInfoFile = new File(packageDir, "packageinfo");
         this.buildContext.removeMessages(packageInfoFile);

         final File packageInfoJavaFile = new File(packageDir, "package-info.java");
         this.buildContext.removeMessages(packageInfoJavaFile);

         // package-info.java has precedence
         if ( packageInfoJavaFile != null && packageInfoJavaFile.exists() )
         {
             return findVersionLocationInPackageInfoJava(packageInfoJavaFile);
         }
         // packageinfo next
         if ( packageInfoFile != null && packageInfoFile.exists() )
         {
             return findVersionLocationInPackageInfo(packageInfoFile);
         }

         final FileMarker defaultMarker = new FileMarker();
         defaultMarker.file = packageDir;

         return defaultMarker;
     }

     private FileMarker findVersionLocationInPackageInfo(final File file)
     throws IOException
     {
         final FileMarker marker = new FileMarker();
         marker.file = file;
         final String contents = FileUtils.fileRead(file);
         final LineNumberReader reader = new LineNumberReader(new StringReader(contents));
         try
         {
             String line;
             while ( (line = reader.readLine()) != null )
             {
                 final int pos = line.indexOf("version ");
                 if ( pos > -1 )
                 {
                     marker.col = pos;
                     marker.line = reader.getLineNumber();

                     break;
                 }
             }
         }
         finally
         {
             IOUtil.close(reader);
         }
         return marker;
     }

     private FileMarker findVersionLocationInPackageInfoJava(final File file)
     throws IOException
     {
         final FileMarker marker = new FileMarker();
         marker.file = file;
         final String contents = FileUtils.fileRead(file);
         final LineNumberReader reader = new LineNumberReader(new StringReader(contents));
         try
         {
             String line;
             while ( (line = reader.readLine()) != null )
             {
                 final int pos = line.indexOf("@Version");
                 if ( pos > -1 )
                 {
                     marker.col = pos;
                     marker.line = reader.getLineNumber();

                     break;
                 }
             }
         }
         finally
         {
             IOUtil.close(reader);
         }
         return marker;
     }

    private void generateStructuralChangeMarkers(final Info baselineInfo)
    {
         final Delta packageDelta = baselineInfo.packageDiff.getDelta();

         // Iterate into the package member diffs
         for (final Diff pkgMemberDiff : baselineInfo.packageDiff.getChildren())
         {
             // only deal with interfaces and classes
             if ( pkgMemberDiff.getType() != Type.INTERFACE && pkgMemberDiff.getType() != Type.CLASS )
             {
                 continue;
             }

             // clear old marker
             final String className = pkgMemberDiff.getName();
             final File classFile = this.getSourceFile(className);
             this.buildContext.removeMessages(classFile);

             // Skip deltas that have lesser significance than the overall package delta
             if (pkgMemberDiff.getDelta().ordinal() < packageDelta.ordinal())
             {
                 continue;
             }

             if (Delta.ADDED == pkgMemberDiff.getDelta())
             {
                 // TODO
             }
             else if (Delta.REMOVED == pkgMemberDiff.getDelta())
             {
                 // TODO
             }
             else
             {
                 // Iterate into the class member diffs
                 for (final Diff classMemberDiff : pkgMemberDiff.getChildren())
                 {
                     // Skip deltas that have lesser significance than the overall package delta (again)
                     if (classMemberDiff.getDelta().ordinal() < packageDelta.ordinal())
                         continue;

                     if (Delta.ADDED == classMemberDiff.getDelta())
                     {
                         addAddedMarker(classFile, classMemberDiff);
                     }
                     else if (Delta.REMOVED == classMemberDiff.getDelta())
                     {
                         addRemovedMarker(classFile, classMemberDiff);
                     }
                     else if (Delta.CHANGED == classMemberDiff.getDelta())
                     {
                         addChangedMarker(classFile, classMemberDiff);
                     }
                 }
             }
         }
     }

    private void addAddedMarker(final File classFile, final Diff diff)
    {
        this.buildContext.addMessage(classFile, 0, 0, diff.getType() + " " + diff.getName() + " has been added.", BuildContext.SEVERITY_ERROR, null);
    }

    private void addRemovedMarker(final File classFile, final Diff diff)
    {
        this.buildContext.addMessage(classFile, 0, 0, diff.getType() + " " + diff.getName() + " has been removed.", BuildContext.SEVERITY_ERROR, null);
    }

    private void addChangedMarker(final File classFile, final Diff diff)
    {
        this.buildContext.addMessage(classFile, 0, 0, diff.getType() + " " + diff.getName() + " has been changed.", BuildContext.SEVERITY_ERROR, null);
    }
 }
	/*
	* 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.
	*/
	package org.apache.felix.bundleplugin.baseline;

	import java.io.File;
	import java.io.FileWriter;
	import java.io.IOException;
	import java.io.LineNumberReader;
	import java.io.StringReader;
	import java.util.Map;
	import java.util.Map.Entry;

	import org.codehaus.plexus.util.FileUtils;
	import org.codehaus.plexus.util.IOUtil;
	import org.codehaus.plexus.util.xml.PrettyPrintXMLWriter;
	import org.codehaus.plexus.util.xml.XMLWriter;
	import org.sonatype.plexus.build.incremental.BuildContext;

	import aQute.bnd.differ.Baseline.Info;
	import aQute.bnd.service.diff.Delta;
	import aQute.bnd.service.diff.Diff;
	import aQute.bnd.service.diff.Type;
	import aQute.bnd.version.Version;

	/**
	* BND Baseline check between two bundles.
	*
	* @goal baseline
	* @phase verify
	* @requiresDependencyResolution test
	* @threadSafe true
	* @since 2.4.1
	*/
	public final class BaselinePlugin
	extends AbstractBaselinePlugin
	{

	private static final String TABLE_PATTERN = "%s %-50s %-10s %-10s %-10s %-10s %-10s";

	/**
	* An XML output file to render to <code>${project.build.directory}/baseline.xml</code>.
	*
	* @parameter expression="${project.build.directory}/baseline.xml"
	*/
	private File xmlOutputFile;

	/**
	* Whether to log the results to the console or not, true by default.
	*
	* @parameter expression="${logResults}" default-value="true"
	*/
	private boolean logResults;

	/**
	* @component
	*/
	private BuildContext buildContext;

	private static final class Context {
	public FileWriter writer;
	public XMLWriter xmlWriter;
	}

	@Override
	protected Object init(final Object noContext)
	{
	if ( xmlOutputFile != null )
	{
	xmlOutputFile.getParentFile().mkdirs();
	try
	{
	final Context ctx = new Context();
	ctx.writer = new FileWriter( xmlOutputFile );
	ctx.xmlWriter = new PrettyPrintXMLWriter( ctx.writer );
	return ctx;
	}
	catch ( IOException e )
	{
	getLog().warn( "No XML report will be produced, cannot write data to " + xmlOutputFile, e );
	}
	}
	return null;
	}

	@Override
	protected void close(final Object writer)
	{
	if ( writer != null )
	{
	try {

	((Context)writer).writer.close();
	}
	catch (IOException e)
	{
	// ignore
	}
	}
	}
	@Override
	protected void startBaseline( Object context,
	String generationDate,
	String bundleName,
	String currentVersion,
	String previousVersion )
	{
	final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
	if ( isLoggingResults() )
	{
	log( "Baseline Report - Generated by Apache Felix Maven Bundle Plugin on %s based on Bnd - see http://www.aqute.biz/Bnd/Bnd",
	generationDate );
	log( "Comparing bundle %s version %s to version %s", bundleName, currentVersion, previousVersion );
	log( "" );
	log( TABLE_PATTERN,
	" ",
	"PACKAGE_NAME",
	"DELTA",
	"CUR_VER",
	"BASE_VER",
	"REC_VER",
	"WARNINGS",
	"ATTRIBUTES" );
	log( TABLE_PATTERN,
	"=",
	"==================================================",
	"==========",
	"==========",
	"==========",
	"==========",
	"==========",
	"==========" );
	}

	if ( xmlWriter != null )
	{
	xmlWriter.startElement( "baseline" );
	xmlWriter.addAttribute( "version", "1.0.0" );
	xmlWriter.addAttribute( "vendor", "The Apache Software Foundation" );
	xmlWriter.addAttribute( "vendorURL", "http://www.apache.org/" );
	xmlWriter.addAttribute( "generator", "Apache Felix Maven Bundle Plugin" );
	xmlWriter.addAttribute( "generatorURL", "http://felix.apache.org/site/apache-felix-maven-bundle-plugin-bnd.html" );
	xmlWriter.addAttribute( "analyzer", "Bnd" );
	xmlWriter.addAttribute( "analyzerURL", "http://www.aqute.biz/Bnd/Bnd" );
	xmlWriter.addAttribute( "generatedOn", generationDate );
	xmlWriter.addAttribute( "bundleName", bundleName );
	xmlWriter.addAttribute( "currentVersion", currentVersion );
	xmlWriter.addAttribute( "previousVersion", previousVersion );
	}
	}

	@Override
	protected void startPackage( Object context,
	boolean mismatch,
	String name,
	String shortDelta,
	String delta,
	Version newerVersion,
	Version olderVersion,
	Version suggestedVersion,
	DiffMessage diffMessage,
	Map<String,String> attributes )
	{
	final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
	if ( isLoggingResults() )
	{
	log( TABLE_PATTERN,
	mismatch ? '*' : shortDelta,
	name,
	delta,
	newerVersion,
	olderVersion,
	suggestedVersion,
	diffMessage != null ? diffMessage : '-',
	attributes );
	}

	if ( xmlWriter != null )
	{
	xmlWriter.startElement( "package" );
	xmlWriter.addAttribute( "name", name );
	xmlWriter.addAttribute( "delta", delta );
	simpleElement( xmlWriter, "mismatch", String.valueOf( mismatch ) );
	simpleElement( xmlWriter, "newerVersion", newerVersion.toString() );
	simpleElement( xmlWriter, "olderVersion", olderVersion.toString() );
	if ( suggestedVersion != null )
	{
	simpleElement( xmlWriter, "suggestedVersion", suggestedVersion.toString() );
	}

	if ( diffMessage != null )
	{
	simpleElement( xmlWriter, diffMessage.getType().name(), diffMessage.getMessage() );
	}

	xmlWriter.startElement( "attributes" );
	if (attributes != null)
	{
	for (Entry<String, String> attribute : attributes.entrySet())
	{
	String attributeName = attribute.getKey();
	if (':' == attributeName.charAt(attributeName.length() - 1))
	{
	attributeName = attributeName.substring(0, attributeName.length() - 1);
	}
	String attributeValue = attribute.getValue();

	xmlWriter.startElement(attributeName);
	xmlWriter.writeText(attributeValue);
	xmlWriter.endElement();
	}
	}
	xmlWriter.endElement();
	}
	}

	@Override
	protected void startDiff( Object context, int depth, String type, String name, String delta, String shortDelta )
	{
	final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
	if ( isLoggingResults() )
	{
	log( "%-" + (depth * 4) + "s %s %s %s",
	"",
	shortDelta,
	type,
	name );
	}

	if ( xmlWriter != null )
	{
	xmlWriter.startElement( type );
	xmlWriter.addAttribute( "name", name );
	xmlWriter.addAttribute( "delta", delta );
	}
	}

	@Override
	protected void endDiff( Object context, int depth )
	{
	final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
	if ( xmlWriter != null )
	{
	xmlWriter.endElement();
	}
	}

	@Override
	protected void endPackage(Object context)
	{
	final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
	if ( isLoggingResults() )
	{
	log( "-----------------------------------------------------------------------------------------------------------" );
	}

	if ( xmlWriter != null )
	{
	xmlWriter.endElement();
	}
	}

	@Override
	protected void endBaseline(Object context)
	{
	final XMLWriter xmlWriter = context == null ? null : ((Context)context).xmlWriter;
	if ( xmlWriter != null )
	{
	xmlWriter.endElement();
	}
	}

	private boolean isLoggingResults()
	{
	return logResults && getLog().isInfoEnabled();
	}

	private void log( String format, Object...args )
	{
	getLog().info( String.format( format, args ) );
	}

	private void simpleElement( XMLWriter xmlWriter, String name, String value )
	{
	xmlWriter.startElement( name );
	xmlWriter.writeText( value );
	xmlWriter.endElement();
	}

	@Override
	protected void reportErrors(final Info[] infos)
	throws IOException
	{
	for ( final Info info : infos )
	{
	// clear previous messages
	final FileMarker packageMarker = findMarkerLocationForPackage(info.packageName);

	if ( info.suggestedVersion != null )
	{
	if ( info.newerVersion.compareTo( info.suggestedVersion ) > 0 )
	{
	final String msg = "Excessive version increase: detected " + info.newerVersion + ", suggested " + info.suggestedVersion;

	this.buildContext.addMessage(packageMarker.file, packageMarker.line, packageMarker.col, msg, BuildContext.SEVERITY_WARNING, null);
	}
	else if ( info.newerVersion.compareTo( info.suggestedVersion ) < 0 )
	{
	final String msg = "Version increase required: detected " + info.newerVersion + ", suggested " + info.suggestedVersion;

	this.buildContext.addMessage(packageMarker.file, packageMarker.line, packageMarker.col, msg, BuildContext.SEVERITY_ERROR, null);
	}
	}

	if ( info.packageDiff.getDelta() == Delta.UNCHANGED && info.newerVersion.compareTo( info.suggestedVersion ) != 0 )
	{
	final String msg = "Version has been increased but analysis detected no changes: detected " + info.newerVersion + ", suggested " + info.suggestedVersion;
	this.buildContext.addMessage(packageMarker.file, packageMarker.line, packageMarker.col, msg, BuildContext.SEVERITY_WARNING, null);
	}
	generateStructuralChangeMarkers(info);
	}
	}

	private File getPackageFile(final String packageName)
	{
	final String sourceDir = this.project.getBuild().getSourceDirectory();
	final File packageDir = new File((sourceDir + '/' + packageName.replace('.', '/')).replace('/', File.separatorChar));

	return packageDir;
	}

	private File getSourceFile(final String className)
	{
	final String sourceDir = this.project.getBuild().getSourceDirectory();
	final File packageDir = new File((sourceDir + '/' + className.replace('.', '/') + ".java").replace('/', File.separatorChar));

	return packageDir;
	}

	private static final class FileMarker
	{
	public File file;
	public int line;
	public int col;
	}

	/**
	* Find marker location for a package
	* and clear old markers.
	*/
	private FileMarker findMarkerLocationForPackage(final String packageName)
	throws IOException
	{
	final File packageDir = getPackageFile(packageName);
	this.buildContext.removeMessages(packageDir);

	final File packageInfoFile = new File(packageDir, "packageinfo");
	this.buildContext.removeMessages(packageInfoFile);

	final File packageInfoJavaFile = new File(packageDir, "package-info.java");
	this.buildContext.removeMessages(packageInfoJavaFile);

	// package-info.java has precedence
	if ( packageInfoJavaFile != null && packageInfoJavaFile.exists() )
	{
	return findVersionLocationInPackageInfoJava(packageInfoJavaFile);
	}
	// packageinfo next
	if ( packageInfoFile != null && packageInfoFile.exists() )
	{
	return findVersionLocationInPackageInfo(packageInfoFile);
	}

	final FileMarker defaultMarker = new FileMarker();
	defaultMarker.file = packageDir;

	return defaultMarker;
	}

	private FileMarker findVersionLocationInPackageInfo(final File file)
	throws IOException
	{
	final FileMarker marker = new FileMarker();
	marker.file = file;
	final String contents = FileUtils.fileRead(file);
	final LineNumberReader reader = new LineNumberReader(new StringReader(contents));
	try
	{
	String line;
	while ( (line = reader.readLine()) != null )
	{
	final int pos = line.indexOf("version ");
	if ( pos > -1 )
	{
	marker.col = pos;
	marker.line = reader.getLineNumber();

	break;
	}
	}
	}
	finally
	{
	IOUtil.close(reader);
	}
	return marker;
	}

	private FileMarker findVersionLocationInPackageInfoJava(final File file)
	throws IOException
	{
	final FileMarker marker = new FileMarker();
	marker.file = file;
	final String contents = FileUtils.fileRead(file);
	final LineNumberReader reader = new LineNumberReader(new StringReader(contents));
	try
	{
	String line;
	while ( (line = reader.readLine()) != null )
	{
	final int pos = line.indexOf("@Version");
	if ( pos > -1 )
	{
	marker.col = pos;
	marker.line = reader.getLineNumber();

	break;
	}
	}
	}
	finally
	{
	IOUtil.close(reader);
	}
	return marker;
	}

	private void generateStructuralChangeMarkers(final Info baselineInfo)
	{
	final Delta packageDelta = baselineInfo.packageDiff.getDelta();

	// Iterate into the package member diffs
	for (final Diff pkgMemberDiff : baselineInfo.packageDiff.getChildren())
	{
	// only deal with interfaces and classes
	if ( pkgMemberDiff.getType() != Type.INTERFACE && pkgMemberDiff.getType() != Type.CLASS )
	{
	continue;
	}

	// clear old marker
	final String className = pkgMemberDiff.getName();
	final File classFile = this.getSourceFile(className);
	this.buildContext.removeMessages(classFile);

	// Skip deltas that have lesser significance than the overall package delta
	if (pkgMemberDiff.getDelta().ordinal() < packageDelta.ordinal())
	{
	continue;
	}

	if (Delta.ADDED == pkgMemberDiff.getDelta())
	{
	// TODO
	}
	else if (Delta.REMOVED == pkgMemberDiff.getDelta())
	{
	// TODO
	}
	else
	{
	// Iterate into the class member diffs
	for (final Diff classMemberDiff : pkgMemberDiff.getChildren())
	{
	// Skip deltas that have lesser significance than the overall package delta (again)
	if (classMemberDiff.getDelta().ordinal() < packageDelta.ordinal())
	continue;

	if (Delta.ADDED == classMemberDiff.getDelta())
	{
	addAddedMarker(classFile, classMemberDiff);
	}
	else if (Delta.REMOVED == classMemberDiff.getDelta())
	{
	addRemovedMarker(classFile, classMemberDiff);
	}
	else if (Delta.CHANGED == classMemberDiff.getDelta())
	{
	addChangedMarker(classFile, classMemberDiff);
	}
	}
	}
	}
	}

	private void addAddedMarker(final File classFile, final Diff diff)
	{
	this.buildContext.addMessage(classFile, 0, 0, diff.getType() + " " + diff.getName() + " has been added.", BuildContext.SEVERITY_ERROR, null);
	}

	private void addRemovedMarker(final File classFile, final Diff diff)
	{
	this.buildContext.addMessage(classFile, 0, 0, diff.getType() + " " + diff.getName() + " has been removed.", BuildContext.SEVERITY_ERROR, null);
	}

	private void addChangedMarker(final File classFile, final Diff diff)
	{
	this.buildContext.addMessage(classFile, 0, 0, diff.getType() + " " + diff.getName() + " has been changed.", BuildContext.SEVERITY_ERROR, null);
	}
	}