/*
* 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.geronimo.gshell.obr;
import java.io.PrintWriter;
import java.util.List;
import org.apache.geronimo.gshell.support.OsgiCommandSupport;
import org.osgi.framework.Bundle;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.Version;
import org.osgi.service.obr.RepositoryAdmin;
import org.osgi.service.obr.Requirement;
import org.osgi.service.obr.Resolver;
import org.osgi.service.obr.Resource;
/**
* Created by IntelliJ IDEA.
* User: gnodet
* Date: Nov 29, 2007
* Time: 4:51:56 PM
* To change this template use File | Settings | File Templates.
*/
public abstract class ObrCommandSupport extends OsgiCommandSupport {
protected static final char VERSION_DELIM = ',';
protected Object doExecute() throws Exception {
// Get repository admin service.
ServiceReference ref = getBundleContext().getServiceReference(RepositoryAdmin.class.getName());
if (ref == null) {
io.out.println("RepositoryAdmin service is unavailable.");
return null;
}
try {
RepositoryAdmin admin = (RepositoryAdmin) getBundleContext().getService(ref);
if (admin == null) {
io.out.println("RepositoryAdmin service is unavailable.");
return null;
}
doExecute(admin);
}
finally {
getBundleContext().ungetService(ref);
}
return null;
}
protected abstract void doExecute(RepositoryAdmin admin) throws Exception;
protected Resource[] searchRepository(RepositoryAdmin admin, String targetId, String targetVersion)
{
// Try to see if the targetId is a bundle ID.
try
{
Bundle bundle = getBundleContext().getBundle(Long.parseLong(targetId));
targetId = bundle.getSymbolicName();
}
catch (NumberFormatException ex)
{
// It was not a number, so ignore.
}
// The targetId may be a bundle name or a bundle symbolic name,
// so create the appropriate LDAP query.
StringBuffer sb = new StringBuffer("(|(presentationname=");
sb.append(targetId);
sb.append(")(symbolicname=");
sb.append(targetId);
sb.append("))");
if (targetVersion != null)
{
sb.insert(0, "(&");
sb.append("(version=");
sb.append(targetVersion);
sb.append("))");
}
return admin.discoverResources(sb.toString());
}
public Resource selectNewestVersion(Resource[] resources)
{
int idx = -1;
Version v = null;
for (int i = 0; (resources != null) && (i < resources.length); i++)
{
if (i == 0)
{
idx = 0;
v = resources[i].getVersion();
}
else
{
Version vtmp = resources[i].getVersion();
if (vtmp.compareTo(v) > 0)
{
idx = i;
v = vtmp;
}
}
}
return (idx < 0) ? null : resources[idx];
}
protected String[] getTarget(String bundle) {
String[] target;
int idx = bundle.indexOf(VERSION_DELIM);
if (idx > 0) {
target = new String[] { bundle.substring(0, idx), bundle.substring(idx) };
}
else
{
target = new String[] { bundle, null };
}
return target;
}
protected void printUnderline(PrintWriter out, int length)
{
for (int i = 0; i < length; i++)
{
out.print('-');
}
out.println("");
}
protected void doDeploy(RepositoryAdmin admin, List<String> bundles, boolean start) throws Exception {
Resolver resolver = admin.resolver();
for (String bundle : bundles) {
String[] target = getTarget(bundle);
Resource resource = selectNewestVersion(searchRepository(admin, target[0], target[1]));
if (resource != null)
{
resolver.add(resource);
}
else
{
io.err.println("Unknown bundle - " + target[0]);
}
}
if ((resolver.getAddedResources() != null) &&
(resolver.getAddedResources().length > 0))
{
if (resolver.resolve())
{
io.out.println("Target resource(s):");
printUnderline(io.out, 19);
Resource[] resources = resolver.getAddedResources();
for (int resIdx = 0; (resources != null) && (resIdx < resources.length); resIdx++)
{
io.out.println(" " + resources[resIdx].getPresentationName()
+ " (" + resources[resIdx].getVersion() + ")");
}
resources = resolver.getRequiredResources();
if ((resources != null) && (resources.length > 0))
{
io.out.println("\nRequired resource(s):");
printUnderline(io.out, 21);
for (int resIdx = 0; resIdx < resources.length; resIdx++)
{
io.out.println(" " + resources[resIdx].getPresentationName()
+ " (" + resources[resIdx].getVersion() + ")");
}
}
resources = resolver.getOptionalResources();
if ((resources != null) && (resources.length > 0))
{
io.out.println("\nOptional resource(s):");
printUnderline(io.out, 21);
for (int resIdx = 0; resIdx < resources.length; resIdx++)
{
io.out.println(" " + resources[resIdx].getPresentationName()
+ " (" + resources[resIdx].getVersion() + ")");
}
}
try
{
io.out.print("\nDeploying...");
resolver.deploy(start);
io.out.println("done.");
}
catch (IllegalStateException ex)
{
io.err.println(ex);
}
}
else
{
Requirement[] reqs = resolver.getUnsatisfiedRequirements();
if ((reqs != null) && (reqs.length > 0))
{
io.out.println("Unsatisfied requirement(s):");
printUnderline(io.out, 27);
for (int reqIdx = 0; reqIdx < reqs.length; reqIdx++)
{
io.out.println(" " + reqs[reqIdx].getFilter());
Resource[] resources = resolver.getResources(reqs[reqIdx]);
for (int resIdx = 0; resIdx < resources.length; resIdx++)
{
io.out.println(" " + resources[resIdx].getPresentationName());
}
}
}
else
{
io.out.println("Could not resolve targets.");
}
}
}
}
}