Examples with ServiceTracker org.osgi.util.tracker.ServiceTracker used on opensource projects

Example 81 with ServiceTracker

use of org.osgi.util.tracker.ServiceTracker in project aries by apache.

the class Activator method start.

public void start(final BundleContext bc) {
    tracker = new ServiceTracker(bc, GreeterService.class.getName(), null) {

        @Override
        public Object addingService(ServiceReference reference) {
            Object result = super.addingService(reference);
            useService(bc, reference);
            return result;
        }
    };
    tracker.open();
}

Example 82 with ServiceTracker

use of org.osgi.util.tracker.ServiceTracker in project aries by apache.

the class ConfigAdminPropsFileContentHandlerTest method testConfigurationContentHandler.

@Test
public void testConfigurationContentHandler() throws Exception {
    // This test works as follows: it first installs a subsystem (cmContent.esa)
    // that contains two configuration files (org.foo.Bar.cfg and com.blah.Blah.cfg)
    // These configuration files are marked as 'osgi.config' content type.
    // The ConfigAdminContentHandler handles the installation of this content
    // and registers them as configuration with the Config Admin Service.
    // The .esa file also contains an ordinary bundle that registers two
    // Config Admin ManagedServices. Each registerd under one of the PIDs.
    // Once they receive the expected configuration they each register a String
    // service to mark that they have.
    // After starting the subsystem this test waits for these 'String' services
    // to appear so that it knows that the whole process worked.
    Subsystem subsystem = installSubsystemFromFile("cmContent.esa");
    subsystem.start();
    // Now check that both Managed Services (Config Admin services) have been configured
    // If they are configured correctly they will register a marker String service to
    // indicate this.
    Filter f = bundleContext.createFilter("(&(objectClass=java.lang.String)(test.pid=org.foo.Bar))");
    ServiceTracker<String, String> barTracker = new ServiceTracker<String, String>(bundleContext, f, null);
    try {
        barTracker.open();
        String blahSvc = barTracker.waitForService(2000);
        assertEquals("Bar!", blahSvc);
    } finally {
        barTracker.close();
    }
    Filter f2 = bundleContext.createFilter("(&(objectClass=java.lang.String)(test.pid=com.blah.Blah))");
    ServiceTracker<String, String> blahTracker = new ServiceTracker<String, String>(bundleContext, f2, null);
    try {
        blahTracker.open();
        String blahSvc = blahTracker.waitForService(2000);
        assertEquals("Blah!", blahSvc);
    } finally {
        blahTracker.close();
    }
    stopAndUninstallSubsystemSilently(subsystem);
}

Example 83 with ServiceTracker

use of org.osgi.util.tracker.ServiceTracker in project aries by apache.

the class RichBundleContext method getService.

public <T> T getService(Class<T> type, String filter, long timeout) {
    ServiceTracker tracker = null;
    try {
        String flt;
        if (filter != null) {
            if (filter.startsWith("(")) {
                flt = "(&(" + Constants.OBJECTCLASS + "=" + type.getName() + ")" + filter + ")";
            } else {
                flt = "(&(" + Constants.OBJECTCLASS + "=" + type.getName() + ")(" + filter + "))";
            }
        } else {
            flt = "(" + Constants.OBJECTCLASS + "=" + type.getName() + ")";
        }
        Filter osgiFilter = FrameworkUtil.createFilter(flt);
        tracker = new ServiceTracker(delegate, osgiFilter, null);
        tracker.open();
        Object svc = type.cast(tracker.waitForService(timeout));
        if (svc == null) {
            System.out.println("Could not obtain a service in time, service-ref=" + tracker.getServiceReference() + ", time=" + System.currentTimeMillis());
            throw new RuntimeException("Gave up waiting for service " + flt);
        }
        return type.cast(svc);
    } catch (InvalidSyntaxException e) {
        throw new IllegalArgumentException("Invalid filter", e);
    } catch (InterruptedException e) {
        throw new RuntimeException(e);
    }
}

Example 84 with ServiceTracker

use of org.osgi.util.tracker.ServiceTracker in project aries by apache.

the class AbstractTransactionTest method getService.

private <T> T getService(Class<T> clazz, String filter, long timeout) throws InvalidSyntaxException {
    Filter f = FrameworkUtil.createFilter(filter == null ? "(|(foo=bar)(!(foo=bar)))" : filter);
    ServiceTracker<T, T> tracker = new ServiceTracker<T, T>(context, clazz, null) {

        @Override
        public T addingService(ServiceReference<T> reference) {
            return f.match(reference) ? super.addingService(reference) : null;
        }
    };
    tracker.open();
    try {
        T t = tracker.waitForService(timeout);
        if (t == null) {
            throw new NoSuchElementException(clazz.getName());
        }
        return t;
    } catch (InterruptedException e) {
        throw new RuntimeException("Error waiting for service " + clazz.getName(), e);
    } finally {
        trackers.add(tracker);
    }
}

Example 85 with ServiceTracker

use of org.osgi.util.tracker.ServiceTracker in project aries by apache.

the class Helper method getOsgiService.

public static <T> T getOsgiService(BundleContext bundleContext, Class<T> type, String filter, long timeout) {
    ServiceTracker tracker = null;
    try {
        String flt;
        if (filter != null) {
            if (filter.startsWith("(")) {
                flt = "(&(" + Constants.OBJECTCLASS + "=" + type.getName() + ")" + filter + ")";
            } else {
                flt = "(&(" + Constants.OBJECTCLASS + "=" + type.getName() + ")(" + filter + "))";
            }
        } else {
            flt = "(" + Constants.OBJECTCLASS + "=" + type.getName() + ")";
        }
        Filter osgiFilter = FrameworkUtil.createFilter(flt);
        tracker = new ServiceTracker(bundleContext, osgiFilter, null);
        tracker.open(true);
        // Note that the tracker is not closed to keep the reference
        // This is buggy, as the service reference may change i think
        Object svc = tracker.waitForService(timeout);
        if (svc == null) {
            Dictionary<?, ?> dic = bundleContext.getBundle().getHeaders();
            System.err.println("Test bundle headers: " + explode(dic));
            for (ServiceReference ref : asCollection(bundleContext.getAllServiceReferences(null, null))) {
                System.err.println("ServiceReference: " + ref + ", bundle: " + ref.getBundle() + ", symbolicName: " + ref.getBundle().getSymbolicName());
            }
            for (ServiceReference ref : asCollection(bundleContext.getAllServiceReferences(null, flt))) {
                System.err.println("Filtered ServiceReference: " + ref + ", bundle: " + ref.getBundle() + ", symbolicName: " + ref.getBundle().getSymbolicName());
            }
            throw new RuntimeException("Gave up waiting for service " + flt);
        }
        return type.cast(svc);
    } catch (InvalidSyntaxException e) {
        throw new IllegalArgumentException("Invalid filter", e);
    } catch (InterruptedException e) {
        throw new RuntimeException(e);
    }
}