/*
* 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.webconsole.plugins.packageadmin.internal;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.Map.Entry;
import org.apache.felix.webconsole.ConfigurationPrinter;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.service.packageadmin.ExportedPackage;
import org.osgi.service.packageadmin.PackageAdmin;
import org.osgi.util.tracker.ServiceTracker;
class WebConsolePrinter implements ConfigurationPrinter
{
private final ServiceTracker tracker;
private final BundleContext bc;
WebConsolePrinter(BundleContext bc, ServiceTracker tracker)
{
this.bc = bc;
this.tracker = tracker;
}
/**
* @see org.apache.felix.webconsole.ConfigurationPrinter#printConfiguration(java.io.PrintWriter)
*/
public void printConfiguration(PrintWriter pw)
{
final PackageAdmin pa = (PackageAdmin) tracker.getService();
if (pa == null)
{
pw.println("Status: PackageAdmin Service not registered");
return;
}
try
{
Map/*<String, Set<ExportedPackage>>*/exports = WebConsolePlugin.collectExportedPackages(
pa, bc);
pw.print("Status: PackageAdmin service reports ");
pw.print(String.valueOf(exports.size()));
pw.println(" exported packages.");
pw.println();
dumpDuplicatesAsTxt(pw, exports);
}
catch (Exception e)
{
pw.println("failure ...." + e);
}
}
private void dumpDuplicatesAsTxt(final PrintWriter pw,
final Map/*<String, Set<ExportedPackage>>*/exports)
{
pw.println("Duplicate Exported Packages");
pw.println("---------------------------");
final List/*<String[]>*/lines = new ArrayList/*<String[]>*/();
lines.add(new String[] { "Package", "Exports", "Imports" });
for (Iterator/*<Entry<String, Set<ExportedPackage>>>*/entriesIter = exports.entrySet().iterator(); entriesIter.hasNext();)
{
Entry/*<String, Set<ExportedPackage>>*/exportEntry = (Entry) entriesIter.next();
final Set/*<ExportedPackage>*/exportSet = (Set) exportEntry.getValue();
if (exportSet.size() > 1)
{
String firstCol = (String) exportEntry.getKey();
for (Iterator packageIter = exportSet.iterator(); packageIter.hasNext();)
{
ExportedPackage exportedPackage = (ExportedPackage) packageIter.next();
final Bundle[] importers = exportedPackage.getImportingBundles();
final String secondCol = "version=" + exportedPackage.getVersion()
+ ", Bundle " + exportedPackage.getExportingBundle();
if (importers != null && importers.length > 0)
{
boolean first = true;
for (int j = 0; j < importers.length; j++)
{
final Bundle bundle = importers[j];
if (first)
{
lines.add(new String[] { firstCol, secondCol,
bundle.toString() });
first = false;
}
else
{
lines.add(new String[] { "", "", bundle.toString() });
}
}
}
else
{
lines.add(new String[] { firstCol, secondCol, "" });
}
firstCol = "";
}
}
}
int maxFirst = 0, maxSecond = 0;
for (int i = 0; i < lines.size(); i++)
{
final String[] entry = (String[]) lines.get(i);
if (entry[0].length() > maxFirst)
{
maxFirst = entry[0].length();
}
if (entry[1].length() > maxSecond)
{
maxSecond = entry[1].length();
}
}
maxFirst += 2;
maxSecond += 2;
for (int i = 0; i < lines.size(); i++)
{
final String[] entry = (String[]) lines.get(i);
padText(pw, entry[0], maxFirst);
padText(pw, entry[1], maxSecond);
pw.println(entry[2]);
}
}
private static final void padText(final PrintWriter pw, final String text,
final int length)
{
pw.print(text);
final int padLength = length - text.length();
for (int i = 0; i < padLength; i++)
{
pw.print(' ');
}
}
/**
* @see org.apache.felix.webconsole.ConfigurationPrinter#getTitle()
*/
public String getTitle()
{
return "Duplicate Exports";
}
}