Examples with FrameworkListener org.osgi.framework.FrameworkListener used on opensource projects

Example 6 with FrameworkListener

use of org.osgi.framework.FrameworkListener in project aries by apache.

the class BundleFrameworkImpl method increaseStartLevel.

private void increaseStartLevel(BundleContext context) {
    /*
       * Algorithm for doing this
       * 
       * 1. Set up a framework listener that will tell us when the start level has been set.
       * 
       * 2. Change the start level. This is asynchronous so by the time the method returned the event 
       *    could have been sent. This is why we set up the listener in step 1.
       * 
       * 3. Wait until the start level has been set appropriately. At this stage all the bundles are startable
       *    and some have been started (most notably lazy activated bundles it appears). Other bundles are still
       *    in resolved state.
       */
    ServiceReference ref = context.getServiceReference(StartLevel.class.getName());
    if (ref != null) {
        StartLevel sl = (StartLevel) context.getService(ref);
        if (sl != null) {
            final Semaphore waitForStartLevelChangedEventToOccur = new Semaphore(0);
            // step 1
            FrameworkListener listener = new FrameworkListener() {

                public void frameworkEvent(FrameworkEvent event) {
                    if (event.getType() == FrameworkEvent.STARTLEVEL_CHANGED) {
                        waitForStartLevelChangedEventToOccur.release();
                    }
                }
            };
            context.addFrameworkListener(listener);
            // step 2
            sl.setStartLevel(sl.getStartLevel() + 1);
            // step 3
            try {
                if (!!!waitForStartLevelChangedEventToOccur.tryAcquire(60, TimeUnit.SECONDS)) {
                    LOGGER.debug("Starting CBA child bundles took longer than 60 seconds");
                }
            } catch (InterruptedException e) {
                // restore the interrupted status
                Thread.currentThread().interrupt();
            }
            context.removeFrameworkListener(listener);
        }
        context.ungetService(ref);
    }
}

Example 7 with FrameworkListener

use of org.osgi.framework.FrameworkListener in project aries by apache.

the class BundleFrameworkManagerImpl method uninstallBundle.

public void uninstallBundle(Bundle b) throws BundleException {
    synchronized (BundleFrameworkManager.SHARED_FRAMEWORK_LOCK) {
        BundleFramework framework = getBundleFramework(b);
        if (framework != null) {
            for (Bundle bundle : new ArrayList<Bundle>(framework.getBundles())) {
                framework.uninstall(bundle);
            }
            BundleContext ctx = framework.getIsolatedBundleContext();
            ServiceReference ref = ctx.getServiceReference(PackageAdmin.class.getName());
            if (ref != null) {
                try {
                    PackageAdmin pa = (PackageAdmin) ctx.getService(ref);
                    if (pa != null) {
                        final Semaphore sem = new Semaphore(0);
                        FrameworkListener listener = new FrameworkListener() {

                            public void frameworkEvent(FrameworkEvent event) {
                                if (event.getType() == FrameworkEvent.PACKAGES_REFRESHED) {
                                    sem.release();
                                }
                            }
                        };
                        ctx.addFrameworkListener(listener);
                        pa.refreshPackages(null);
                        try {
                            sem.tryAcquire(60, TimeUnit.SECONDS);
                        } catch (InterruptedException ie) {
                        }
                        ctx.removeFrameworkListener(listener);
                    }
                } finally {
                    ctx.ungetService(ref);
                }
            }
            framework.close();
            // clean up our maps so we don't leak memory
            _frameworks.remove(b);
            Iterator<BundleFramework> it = _frameworksByAppScope.values().iterator();
            while (it.hasNext()) {
                if (it.next().equals(framework))
                    it.remove();
            }
        }
    }
}

Example 8 with FrameworkListener

use of org.osgi.framework.FrameworkListener in project aries by apache.

the class Framework method refreshBundlesAndWait.

private void refreshBundlesAndWait(long[] bundleIdentifiers, Bundle[] bundles) throws IOException {
    final CountDownLatch latch = new CountDownLatch(1);
    FrameworkListener listener = new FrameworkListener() {

        public void frameworkEvent(FrameworkEvent event) {
            if (FrameworkEvent.PACKAGES_REFRESHED == event.getType()) {
                latch.countDown();
            }
        }
    };
    try {
        context.addFrameworkListener(listener);
        try {
            if (bundles != null) {
                for (int i = 0; i < bundleIdentifiers.length; i++) {
                    bundles[i] = FrameworkUtils.resolveBundle(context, bundleIdentifiers[i]);
                }
            }
            packageAdmin.refreshPackages(bundles);
            if (latch.await(30, TimeUnit.SECONDS))
                return;
            else
                throw new IOException("Refresh operation timed out");
        } catch (InterruptedException e) {
            IOException ex = new IOException();
            ex.initCause(e);
            throw ex;
        }
    } finally {
        context.removeFrameworkListener(listener);
    }
}

Example 9 with FrameworkListener

use of org.osgi.framework.FrameworkListener in project karaf by apache.

the class BundleInstallSupportImpl method refreshPackages.

/* (non-Javadoc)
     * @see org.apache.karaf.features.internal.service.Regions#refreshPackages(java.util.Collection)
     */
@Override
public void refreshPackages(Collection<Bundle> bundles) throws InterruptedException {
    final CountDownLatch latch = new CountDownLatch(1);
    FrameworkWiring fw = systemBundleContext.getBundle().adapt(FrameworkWiring.class);
    fw.refreshBundles(bundles, (FrameworkListener) event -> {
        if (event.getType() == FrameworkEvent.ERROR) {
            LOGGER.error("Framework error", event.getThrowable());
        }
        latch.countDown();
    });
    latch.await();
}

Example 10 with FrameworkListener

use of org.osgi.framework.FrameworkListener in project karaf by apache.

the class LoadTest method execute.

@Override
public Object execute() throws Exception {
    if (!confirm(session)) {
        return null;
    }
    final BundleContext bundleContext = this.bundleContext.getBundle(0).getBundleContext();
    final FrameworkWiring wiring = bundleContext.getBundle().adapt(FrameworkWiring.class);
    final CountDownLatch latch = new CountDownLatch(threads);
    final Bundle[] bundles = bundleContext.getBundles();
    final AtomicBoolean[] locks = new AtomicBoolean[bundles.length];
    for (int b = 0; b < locks.length; b++) {
        locks[b] = new AtomicBoolean(true);
        // Avoid touching excluded bundles
        if (excludes.contains(Long.toString(bundles[b].getBundleId())) || excludes.contains(bundles[b].getSymbolicName())) {
            continue;
        }
        // Only touch active bundles
        if (bundles[b].getState() != Bundle.ACTIVE) {
            continue;
        }
        // Now set the lock to available
        locks[b].set(false);
    }
    for (int i = 0; i < threads; i++) {
        new Thread(() -> {
            try {
                Random rand = new Random();
                for (int j = 0; j < iterations; j++) {
                    for (; ; ) {
                        int b = rand.nextInt(bundles.length);
                        if (locks[b].compareAndSet(false, true)) {
                            try {
                                // Only touch active bundles
                                if (bundles[b].getState() != Bundle.ACTIVE) {
                                    continue;
                                }
                                if (rand.nextInt(100) < refresh) {
                                    try {
                                        bundles[b].update();
                                        final CountDownLatch latch1 = new CountDownLatch(1);
                                        wiring.refreshBundles(Collections.singletonList(bundles[b]), (FrameworkListener) event -> latch1.countDown());
                                        latch1.await();
                                    } finally {
                                        while (true) {
                                            try {
                                                bundles[b].start(Bundle.START_TRANSIENT);
                                                break;
                                            } catch (Exception e) {
                                                Thread.sleep(1);
                                            }
                                        }
                                    }
                                } else {
                                    try {
                                        bundles[b].stop(Bundle.STOP_TRANSIENT);
                                    } finally {
                                        while (true) {
                                            try {
                                                bundles[b].start(Bundle.START_TRANSIENT);
                                                break;
                                            } catch (Exception e) {
                                                Thread.sleep(1);
                                            }
                                        }
                                    }
                                }
                                Thread.sleep(rand.nextInt(delay));
                            } catch (Exception e) {
                                boolean ignore = false;
                                if (e instanceof BundleException && e.getMessage() != null) {
                                    String msg = e.getMessage();
                                    if ("Cannot acquire global lock to update the bundle.".equals(msg) || "Unable to acquire global lock for resolve.".equals(msg) || msg.matches("Bundle .* cannot be update, since it is either starting or stopping.")) {
                                        ignore = true;
                                    }
                                }
                                if (!ignore) {
                                    e.printStackTrace();
                                }
                            } finally {
                                locks[b].set(false);
                            }
                        }
                        break;
                    }
                }
            } catch (Throwable t) {
                t.printStackTrace();
            } finally {
                latch.countDown();
            }
        }).start();
    }
    new Thread(() -> {
        try {
            latch.await();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.err.println("Load test finished");
    }).start();
    return null;
}