Java Code Examples for org.osgi.framework.Bundle#adapt()

/**
 * @see org.osgi.service.packageadmin.PackageAdmin#getHosts(org.osgi.framework.Bundle)
 */
public Bundle[] getHosts(final Bundle bundle) {
	final BundleWiring wiring = bundle.adapt(BundleWiring.class);

	if (wiring == null) {
		return null;
	}

	final List<BundleWire> wires = wiring.getRequiredWires(HostNamespace.HOST_NAMESPACE);

	final ArrayList<Bundle> result = new ArrayList<Bundle>();

	for (final BundleWire wire : wires) {
		if (wire.getRequirer().getBundle() == bundle) {
			result.add(wire.getProvider().getBundle());
		}
	}

	return toArrayOrNull(result, Bundle.class);
}
 

/**
 * @see org.osgi.service.packageadmin.PackageAdmin#getRequiredBundles(java.lang.String)
 */
public RequiredBundle[] getRequiredBundles(final String symbolicName) {
	final Bundle[] bundles = context.getBundles();

	final ArrayList<RequiredBundle> result = new ArrayList<RequiredBundle>();

	for (final Bundle bundle : bundles) {
		if (bundle.getState() == Bundle.INSTALLED || bundle.getState() == Bundle.UNINSTALLED) {
			continue;
		}

		final BundleRevision rev = bundle.adapt(BundleRevision.class);
		if (isFragment(rev)) {
			continue;
		}

		if (symbolicName == null || symbolicName.equals(rev.getSymbolicName())) {
			result.add(new RequiredBundleImpl(rev));
		}
	}

	return toArrayOrNull(result, RequiredBundle.class);
}
 

private void prepareDependencies(final Bundle bundle) {
  final BundleWiring wiring = bundle.adapt(BundleWiring.class);
  final List<BundleWire> wires = wiring.getRequiredWires(BundleRevision.PACKAGE_NAMESPACE);
  if (wires != null) {
    for (final BundleWire wire : wires) {
      try {
        final Bundle dependency = wire.getProviderWiring().getBundle();
        if (!visited.contains(dependency.getSymbolicName()) && hasComponents(dependency)) {
          if (!live(dependency)) {
            dependency.start();
          }
          if (live(dependency)) {
            // pseudo-event to trigger bundle activation
            addingBundle(dependency, null /* unused */);
          }
        }
      }
      catch (final Exception e) {
        log.warn("MISSING {}", wire, e);
      }
    }
  }
}
 

public void setBundleStartLevel(long id, int startLevel) {
	Bundle b = context.getBundle(id);
	if(b == null)
		return;
	
	BundleStartLevel bsl = b.adapt(BundleStartLevel.class);
	bsl.setStartLevel(startLevel);
}
 

/**
 * @see org.osgi.service.packageadmin.PackageAdmin#getFragments(org.osgi.framework.Bundle)
 */
public Bundle[] getFragments(final Bundle bundle) {
	final BundleWiring wiring = bundle.adapt(BundleWiring.class);
	// this will happen if a bundle has no current revision, e.g.
	// is INSTALLED only
	if (wiring == null) {
		// System.err.println("o.e.c.service.packageadmin: getFragments has
		// no wiring for bundle "
		// + bundle.getSymbolicName());
		return null;
	}
	final List<BundleWire> wires = wiring.getProvidedWires(HostNamespace.HOST_NAMESPACE);

	if (wires == null || wires.isEmpty()) {
		return null;
	}

	final Bundle[] result = new Bundle[wires.size()];

	final Iterator<BundleWire> iter = wires.iterator();
	for (int i = 0; i < result.length; i++) {
		final BundleWire wire = iter.next();
		result[i] = wire.getRequirer().getBundle();
	}

	return result;
}
 

@Override
public Representation get(final Variant variant) {
	try {
		final Bundle bundle = getBundleFromKeys(RestService.BUNDLE_ID_KEY);
		if (bundle == null) {
			return ERROR(Status.CLIENT_ERROR_NOT_FOUND);
		}
		final BundleStartLevel bsl = bundle.adapt(BundleStartLevel.class);
		final BundleStartLevelPojo sl = new BundleStartLevelPojo(bsl);
		return getRepresentation(sl, variant);
	} catch (final Exception e) {
		return ERROR(e, variant);
	}
}
 

@Override
public synchronized Map<Resource, Wiring> getWirings() { 
	if(wirings == null) {
		Map<Resource, Wiring> ws = new HashMap<Resource, Wiring>();
		Bundle[] bs = bc.getBundles();
		for(Bundle b : bs) {
			BundleRevision br = b.adapt(BundleRevision.class);
			ws.put(br, br.getWiring());
		}
		wirings = Collections.unmodifiableMap(ws);
	}
	return wirings;
}
 

public BundleDTO uninstallBundle(long id) throws BundleException {
	Bundle b  = context.getBundle(id);
	if(b == null)
		return null;
	
	b.uninstall();
	return b.adapt(BundleDTO.class);
}
 

private void debugBundle(Bundle b) {
    BundleRevision br = b.adapt(BundleRevision.class);

    br.getCapabilities(null).forEach(System.out::println);

    b.adapt(BundleWiring.class).getProvidedWires(null).forEach(System.out::println);
    ;
}
 

private void collectClassPathForBundle(Bundle bundle, List<URL> classPath,
		List<String> compilerClassPath) {
	try {
		File file = FileLocator.getBundleFile(bundle);
		URL url = file.toURI().toURL();

		if (classPath.contains(url)) {
			return; // kill infinite loop
		}
		classPath.add(0, url);
		compilerClassPath.add(0, file.getAbsolutePath());
		
		BundleWiring wiring = bundle.adapt(BundleWiring.class);
		for (BundleWire dep : wiring.getRequiredWires(null)) {
			collectClassPathForBundle(dep.getProviderWiring().getBundle(),
					classPath, compilerClassPath);
		}

		List<String> requiredLibs = new RascalBundleManifest().getRequiredLibraries(bundle);
		if (requiredLibs != null) {
			for (String lib : requiredLibs) {
				classPath.add(bundle.getResource(lib));
			}
		}

	} 
	catch (IOException e) {
		Rasctivator.logException("error while tracing dependencies", e);
	} 
}
 

/**
 * Get bundle class loader at Class.getSystemClassLoader() calls.
 */
public static ClassLoader getSystemClassLoaderWrapper(long bid, Object context) {
  Bundle b = getBundle(bid);
  if (b == null) {
    throw new IllegalStateException("Undefined bid=" + bid);
  }
  BundleWiring bw = b.adapt(BundleWiring.class);
  if (bw == null) {
    throw new RuntimeException("Unable to adapt Bundle to a BundleWiring" + bid);
  }
  return bw.getClassLoader();
}
 

/**
 * Get header text for selected bundle page.
 */
public static String getBundleSelectedHeader(Bundle b)
{
  final BundleRevision rev = b.adapt(BundleRevision.class);
  final boolean isFragment =
    rev != null
      ? (rev.getTypes() & BundleRevision.TYPE_FRAGMENT) != 0
      : false;

  return "#" + b.getBundleId() + "  " + Util.getBundleName(b)
         + (isFragment ? "  (fragment)" : "");
}
 

private FrameworkStartLevel getFrameworkStartLevel0(){
	Bundle bundle = context.getBundle(0);
	return bundle.adapt(FrameworkStartLevel.class);
}
 

void updateLevelItems()
{
  final FrameworkStartLevel fsl = getFrameworkStartLevel();
  if (fsl == null) {
    // No start level service present.
    return;
  }
  levelMax = Math.max(levelMax, fsl.getStartLevel());
  levelItems = new String[levelMax - levelMin + 1];

  final Bundle[] bundles = Activator.getTargetBC().getBundles();
  final StringBuffer sb = new StringBuffer();
  for (final Bundle bundle : bundles) {
    final BundleStartLevel bsl = bundle.adapt(BundleStartLevel.class);
    if (bsl != null) {
      final int ix = bsl.getStartLevel() - levelMin;
      if (0 <= ix && ix < levelItems.length) {
        sb.setLength(0);
        if (levelItems[ix] != null) {
          sb.append(levelItems[ix]);
        }
        if (sb.length() > 0) {
          sb.append(", ");
        }
        final String name = Util.getBundleName(bundle);
        sb.append(name);
        levelItems[ix] = sb.toString();
      }
    }
  }

  final int maxItemLen = 70;
  for (int level = levelMin; level <= levelMax; level++) {
    sb.setLength(0);
    final String levelBundles = levelItems[level - levelMin];
    sb.append("<html><b>");
    sb.append(level);
    sb.append("</b><font size=\"-2\" color=\"#666666\">");
    if (levelBundles != null) {
      sb.append("<font size=\"-2\">&nbsp;[");
      if (levelBundles.length() > maxItemLen) {
        sb.append(levelBundles.subSequence(0, maxItemLen));
        sb.append("...");
      } else {
        sb.append(levelBundles);
      }
      sb.append("]</font>");
    }
    sb.append("</html>");
    levelItems[level - levelMin] = sb.toString();
  }

  if (levelBox != null) {
    final DefaultComboBoxModel model = new DefaultComboBoxModel(levelItems);
    levelBox.setModel(model);
    // Avoid a lot of whitespace to the right of any "..."
    levelBox.setMaximumSize(levelBox.getPreferredSize());
  }
}
 

@Override
public Object getValueAt(int row, int column)
{
  final Bundle b = getBundle(row);

  switch (column) {
  case COL_LOCATION:
    return Util.shortLocation(b.getLocation());
  case COL_ID:
    // return Long.toString(b.getBundleId());
    return Long.valueOf(b.getBundleId());
  case COL_STATE:
    return Util.stateName(b.getState());
  case COL_STARTLEVEL: {
    final BundleStartLevel bsl = b.adapt(BundleStartLevel.class);

    if (null != bsl) {
      try {
        final int n = bsl.getStartLevel();
        return Integer.valueOf(n);
      } catch (final Exception e) {
        // not managed, indicate with -1
        return Integer.valueOf(-1);
      }
    } else {
      // No start level adaptation available, indicate with -2
      return Integer.valueOf(-2);
    }
  }
  case COL_DESC:
    return Util.getHeader(b, Constants.BUNDLE_DESCRIPTION);
  case COL_NAME:
    return Util.getHeader(b, Constants.BUNDLE_NAME);
  case COL_VENDOR:
    return Util.getHeader(b, Constants.BUNDLE_VENDOR);
  case COL_SYMBOLIC_NAME:
    return b.getSymbolicName();
  case COL_VERSION:
    return b.getVersion();
  default:
    return null;
  }
}
 

public int cmdCapability(Dictionary<String, ?> opts,
                         Reader in,
                         PrintWriter out,
                         Session session)
{
  final Bundle[] b = getBundles((String[]) opts.get("bundle"),
                          opts.get("-i") != null);
  final boolean doRequirements = opts.get("-r")!=null;
  final boolean doProvides = opts.get("-p")!=null;
  final boolean doDetailed = opts.get("-l")!=null;
  final boolean doDeclared = opts.get("-d")!=null;

  boolean found = false;
  for (final Bundle element : b) {
    if (element != null) {
      out.println("Bundle: " + showBundle(element));
      found = true;
      final BundleRevision rev = element.adapt(BundleRevision.class);
      final BundleWiring wiring = rev.getWiring();
      if (!doDeclared && wiring == null) {
        out.println("  Bundle is unresolved, only declared capabilites are available.");
      } else {
        final String prefix = doDeclared ? "  Declared " : "  ";

        if (doRequirements || !doProvides) {
          out.print(prefix);
          out.println("Requirements: ");
          final List<BundleRequirement> reqs = doDeclared
            ? rev.getDeclaredRequirements(null)
            : rev.getWiring().getRequirements(null);
          for (final BundleRequirement req : reqs) {
            out.print("    ");
            out.print(req.getNamespace());
            out.print("  ");
            if (!doDetailed) {
              final String f = req.getDirectives().get(Constants.FILTER_DIRECTIVE);
              out.println(f != null ? f : "NO FILTER");
            } else {
              out.println(req.getDirectives());
            }
          }
        }

        if (doProvides || !doRequirements) {
          out.print(prefix);
          out.println("Capabilites: ");
          final List<BundleCapability> caps = doDeclared
            ? rev.getDeclaredCapabilities(null)
            : rev.getWiring().getCapabilities(null);
          for (final BundleCapability bc : caps) {
            out.print("    ");
            out.print(bc.getNamespace());
            out.print("  ");
            out.print(bc.getAttributes());
            if (doDetailed) {
              out.print(" ");
              out.print(bc.getDirectives());
            }
            out.println();
          }
        }
      }
    }
  }
  if (!found) {
    out.println("ERROR! No matching bundle");
    return 1;
  }
  return 0;
}
 

private BundleStartLevel getBundleStartLevel0(Bundle bundle){
	return bundle.adapt(BundleStartLevel.class);
}
 

void stopBundle(final Bundle b)
{
  // Fragments can not be stopped
  final BundleRevision br = b.adapt(BundleRevision.class);
  if ((br.getTypes() & BundleRevision.TYPE_FRAGMENT) != 0) {
    return;
  }

  // Special handling needed when stopping the desktop itself.
  final boolean stoppingSelf =
    b.getBundleId() == 0
        || b.getBundleId() == Activator.getTargetBC().getBundle()
            .getBundleId();

  int n = 0;
  if (stoppingSelf) {
    final Object[] options = { Strings.get("yes"), Strings.get("no") };
    n =
      JOptionPane.showOptionDialog(frame,
                                   Strings.fmt("fmt_q_stopdesktop",
                                               Util.getBundleName(b)),
                                   Strings.get("yes"),
                                   JOptionPane.YES_NO_OPTION,
                                   JOptionPane.QUESTION_MESSAGE, null,
                                   options, options[1]);
  }

  if (n == 0) {
    // Must not call stop() from the EDT, since that will block the
    // EDT untill the stop()-call completes.
    new Thread("Desktop-StopBundle " + b.getBundleId()) {
      @Override
      public void run()
      {
        try {
          b.stop(getStopOptions());
          updateBundleViewSelections();
        } catch (final Exception e) {
          showErr("Failed to stop bundle " + Util.getBundleName(b) + ": " + e,
                  e);
        }
      }
    }.start();
  }
}
 

private Set<Bundle> getBundlesInClassSpace(BundleContext context,
                                                  Bundle bundle, Set<Bundle> bundleSet) {
    Set<Bundle> bundles = new HashSet<>(); // The set containing the
    // bundles either being
    // imported or required
    if (bundle == null) {
        log.error("Incoming bundle is null");
        return bundles;
    }
    if (context == null) {
        log.error("Incoming context is null");
        return bundles;
    }

    BundleWiring bundleWiring = bundle.adapt(BundleWiring.class);
    if (bundleWiring == null) {
        log.error("BundleWiring is null for: " + bundle);
        return bundles;
    }

    // This will give us all required Wires (including require-bundle)
    List<BundleWire> requiredWires = bundleWiring.getRequiredWires(null);
    for (BundleWire bundleWire : requiredWires) {
        Bundle exportingBundle = bundleWire.getCapability().getRevision()
                .getBundle();

        if (exportingBundle.getBundleId() == 0) {
            continue; // system bundle is skipped this one isn't needed
        }
        if (!bundles.contains(exportingBundle)) {
            bundles.add(exportingBundle);
        }
    }

    if (!bundleSet.containsAll(bundles)) { // now let's scan transitively
        bundles.removeAll(bundleSet);
        bundleSet.addAll(bundles);
    }

    // Sanity checkpoint to remove uninstalled bundles
    bundleSet.removeIf(auxBundle -> auxBundle.getState() == Bundle.UNINSTALLED);

    return bundleSet;
}
 

public int cmdPending(Dictionary<String, ?> opts,
                      Reader in,
                      PrintWriter out,
                      Session session)
{
  final boolean doDetailed = opts.get("-l") != null;
  final Bundle systemBundle = bc.getBundle(0);
  final FrameworkWiring frameworkWiring =
      systemBundle.adapt(FrameworkWiring.class);

  Collection<Bundle> bundles = frameworkWiring.getRemovalPendingBundles();
  if (bundles.isEmpty()) {
    out.println("No removal pending.");
  } else {
    Bundle[] barr = bundles.toArray(new Bundle[bundles.size()]);
    if (opts.get("-i") != null) {
      Util.sortBundlesId(barr);
    }
    for (final Bundle element : barr) {
      out.println("Bundle: " + showBundle(element));
      if (doDetailed) {
        out.print("  Reason: ");
        final BundleRevisions brs = element.adapt(BundleRevisions.class);
        final List<BundleRevision> revs = brs.getRevisions();
        if (revs.isEmpty()) {
          out.println("Bundle became unused during command execution.");
        } else {
            switch (revs.get(0).getBundle().getState()) {
            case Bundle.INSTALLED:
              out.println("Bundle has been updated.");
              break;
            case Bundle.UNINSTALLED:
              out.println("Bundle has been uninstalled.");
              break;
            default:
              out.println("Bundle has been updated and resolved.");
          }
        }
      }
    }
  }
  return 0;
}