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

Example 91 with ServiceTracker

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

the class ResourceProviderTracker method activate.

public void activate(final BundleContext bundleContext, final EventAdmin eventAdmin, final ChangeListener listener) {
    this.bundleContext = bundleContext;
    this.eventAdmin = eventAdmin;
    this.listener = listener;
    this.tracker = new ServiceTracker(bundleContext, ResourceProvider.class.getName(), new ServiceTrackerCustomizer() {

        @Override
        public void removedService(final ServiceReference reference, final Object service) {
            final ServiceReference ref = (ServiceReference) service;
            final ResourceProviderInfo info = infos.remove(ref);
            if (info != null) {
                Object pid = ref.getProperty(Constants.SERVICE_PID);
                if (pid != null && !(pid instanceof String)) {
                    pid = null;
                }
                unregister(info, (String) pid);
            }
        }

        @Override
        public void modifiedService(final ServiceReference reference, final Object service) {
            removedService(reference, service);
            addingService(reference);
        }

        @Override
        public Object addingService(final ServiceReference reference) {
            final ResourceProviderInfo info = new ResourceProviderInfo(reference);
            infos.put(reference, info);
            register(info);
            return reference;
        }
    });
    this.tracker.open();
}

Example 92 with ServiceTracker

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

the class LogbackManager method shutdown.

public void shutdown() {
    if (bridgeHandlerInstalled) {
        SLF4JBridgeHandler.uninstall();
    }
    logConfigManager.close();
    for (ServiceTracker tracker : serviceTrackers) {
        tracker.close();
    }
    for (ServiceRegistration reg : registrations) {
        reg.unregister();
    }
    getLoggerContext().removeListener(osgiIntegrationListener);
    getLoggerContext().stop();
}

Example 93 with ServiceTracker

use of org.osgi.util.tracker.ServiceTracker in project ddf by codice.

the class MigrateCommand method getCatalogProviders.

private List<CatalogProvider> getCatalogProviders() {
    ServiceTracker st = new ServiceTracker(bundleContext, CatalogProvider.class.getName(), null);
    st.open();
    ServiceReference<CatalogProvider>[] serviceRefs = st.getServiceReferences();
    Map<ServiceReference<CatalogProvider>, CatalogProvider> map = new TreeMap<>(new ServiceComparator());
    if (null != serviceRefs) {
        for (ServiceReference<CatalogProvider> serviceReference : serviceRefs) {
            map.put(serviceReference, (CatalogProvider) st.getService(serviceReference));
        }
    }
    return new ArrayList<>(map.values());
}

Example 94 with ServiceTracker

use of org.osgi.util.tracker.ServiceTracker in project ddf by codice.

the class ConfigurationAdminExt method getService.

/**
     * Gets the service with the specified class name. Will create a new {@link ServiceTracker} if
     * the service is not already retrieved.
     *
     * @param serviceName the service name to obtain
     * @return the service or <code>null</code> if missing.
     */
final Object getService(String serviceName) {
    ServiceTracker serviceTracker = services.get(serviceName);
    if (serviceTracker == null) {
        serviceTracker = new ServiceTracker(getBundleContext(), serviceName, null);
        serviceTracker.open();
        services.put(serviceName, serviceTracker);
    }
    return serviceTracker.getService();
}

Example 95 with ServiceTracker

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

the class ReferencedSiteComponent method activate.

@SuppressWarnings("unchecked")
@Activate
protected void activate(final ComponentContext ctx) throws ConfigurationException, YardException, InvalidSyntaxException {
    log.debug("in {} activate with properties {}", ReferencedSiteImpl.class.getSimpleName(), ctx.getProperties());
    if (ctx == null || ctx.getProperties() == null) {
        throw new IllegalStateException("No Component Context and/or Dictionary properties object parsed to the acticate methode");
    }
    this.cc = ctx;
    this.bc = ctx.getBundleContext();
    // create the SiteConfiguration based on the parsed properties
    // NOTE that the constructor also validation of the parsed configuration
    siteConfiguration = new ReferencedSiteConfigurationImpl(ctx.getProperties());
    if (PROHIBITED_SITE_IDS.contains(siteConfiguration.getId().toLowerCase())) {
        throw new ConfigurationException(SiteConfiguration.ID, String.format("The ID '%s' of this Referenced Site is one of the following " + "prohibited IDs: {} (case insensitive)", siteConfiguration.getId(), PROHIBITED_SITE_IDS));
    }
    log.info(" > initialise Referenced Site {}", siteConfiguration.getName());
    // if the accessUri is the same as the queryUri and both the
    // dereferencer and the entitySearcher uses the same component, than we 
    //need only one component for both dependencies.
    this.dereferencerEqualsEntitySearcherComponent = // (1) accessURI == queryURI
    siteConfiguration.getAccessUri() != null && siteConfiguration.getAccessUri().equals(siteConfiguration.getQueryUri()) && // (2) entity dereferencer == entity searcher
    siteConfiguration.getEntityDereferencerType() != null && siteConfiguration.getEntityDereferencerType().equals(siteConfiguration.getEntitySearcherType());
    // init the fieldMapper based on the configuration
    FieldMapper fieldMappings = new DefaultFieldMapperImpl(ValueConverterFactory.getDefaultInstance());
    if (siteConfiguration.getFieldMappings() != null) {
        log.debug(" > Initialise configured field mappings");
        for (String configuredMapping : siteConfiguration.getFieldMappings()) {
            FieldMapping mapping = FieldMappingUtils.parseFieldMapping(configuredMapping, nsPrefixService);
            if (mapping != null) {
                log.debug("   - add FieldMapping {}", mapping);
                fieldMappings.addMapping(mapping);
            }
        }
    }
    // now init the referenced Services
    initDereferencerAndEntitySearcher();
    // Reference to the cache!
    if (siteConfiguration.getCacheId() != null) {
        String cacheFilter = String.format("(&(%s=%s)(%s=%s))", Constants.OBJECTCLASS, Cache.class.getName(), Cache.CACHE_YARD, siteConfiguration.getCacheId());
        cacheTracker = new ServiceTracker(ctx.getBundleContext(), ctx.getBundleContext().createFilter(cacheFilter), new ServiceTrackerCustomizer() {

            @Override
            public void removedService(ServiceReference reference, Object service) {
                if (service.equals(cache)) {
                    cache = (Cache) cacheTracker.getService();
                    updateServiceRegistration(bc, siteConfiguration, dereferencerComponentInstance, entitySearcherComponentInstance, cache, nsPrefixService, offlineMode);
                }
                bc.ungetService(reference);
            }

            @Override
            public void modifiedService(ServiceReference reference, Object service) {
                //the service.ranking might have changed ... so check if the
                //top ranked Cache is a different one
                Cache newCache = (Cache) cacheTracker.getService();
                if (newCache == null || !newCache.equals(cache)) {
                    //set the new cahce
                    cache = newCache;
                    //and update the service registration
                    updateServiceRegistration(bc, siteConfiguration, dereferencerComponentInstance, entitySearcherComponentInstance, cache, nsPrefixService, offlineMode);
                }
            }

            @Override
            public Object addingService(ServiceReference reference) {
                Object service = bc.getService(reference);
                if (service != null) {
                    if (//the first added Service or
                    cacheTracker.getServiceReference() == null || //the new service as higher ranking as the current
                    (reference.compareTo(cacheTracker.getServiceReference()) > 0)) {
                        cache = (Cache) service;
                        updateServiceRegistration(bc, siteConfiguration, dereferencerComponentInstance, entitySearcherComponentInstance, cache, nsPrefixService, offlineMode);
                    }
                // else the new service has lower ranking as the currently use one
                }
                //else service == null -> ignore
                return service;
            }
        });
        cacheTracker.open();
    }
}