Esempio n. 1
0
  /**
   * This is the first thing done to instantiate all service instances needed, so that they all can
   * be injected later.
   *
   * @param managedClass The manages class to create instances of.
   * @param context The bundles context.
   * @throws Exception
   */
  protected void handleServiceInstances(Class managedClass, BundleContext context)
      throws Exception {
    OSGiServiceProvider serviceProvider =
        (OSGiServiceProvider) managedClass.getAnnotation(OSGiServiceProvider.class);
    if (serviceProvider != null) {
      int noInstances = 1;

      if (serviceProvider.instances().length > 0) {
        noInstances = serviceProvider.instances().length;
      } else if (!serviceProvider.instanceFactoryClass().equals(InstanceFactory.class)) {
        InstanceFactory instanceFactory =
            (InstanceFactory) getManagedInstance(serviceProvider.instanceFactoryClass());
        if (instanceFactory == null) {
          instanceFactory = serviceProvider.instanceFactoryClass().newInstance();
        }
        noInstances = instanceFactory.getPropertiesPerInstance().size();
      }

      // This will just instantiate and cache the number of instances. Right now we don't care
      // about the instances themselves.
      getManagedInstances(managedClass, noInstances);
    }
  }
Esempio n. 2
0
  /**
   * Registers/publishes services annotated with @OSGiServiceProvider.
   *
   * @param managedClass The managed class to instantiate and register as an OSGi service.
   * @param context The bundle context.
   * @param serviceRegs The list to save all service registrations to for later unregistration.
   * @throws Exception
   */
  protected void registerServices(
      Class managedClass, BundleContext context, List<ServiceRegistration> serviceRegs)
      throws Exception {
    OSGiServiceProvider serviceProvider =
        (OSGiServiceProvider) managedClass.getAnnotation(OSGiServiceProvider.class);
    if (serviceProvider != null) {
      List<Tuple3<Properties, Object, List<String>>> serviceInstData = new LinkedList<>();

      if (serviceProvider.properties().length > 0) {
        Tuple3<Properties, Object, List<String>> sd = new Tuple3<>();
        sd.t1 = osgiPropertiesToProperties(serviceProvider.properties());
        serviceInstData.add(sd);
      } else if (serviceProvider.instances().length > 0) {
        for (OSGiServiceInstance serviceInst : serviceProvider.instances()) {
          Tuple3<Properties, Object, List<String>> sd = new Tuple3<>();
          sd.t1 = osgiPropertiesToProperties(serviceInst.properties());
          serviceInstData.add(sd);
        }
      } else if (!serviceProvider.instanceFactoryClass().equals(InstanceFactory.class)) {
        InstanceFactory instanceFactory =
            (InstanceFactory) getManagedInstance(serviceProvider.instanceFactoryClass());
        if (instanceFactory == null) {
          instanceFactory = serviceProvider.instanceFactoryClass().newInstance();
        }
        for (Properties props : instanceFactory.getPropertiesPerInstance()) {
          Tuple3<Properties, Object, List<String>> sd = new Tuple3<>();
          sd.t1 = props;
          serviceInstData.add(sd);
        }
      } else {
        Tuple3<Properties, Object, List<String>> sd = new Tuple3<>();
        sd.t1 = new Properties();
        serviceInstData.add(sd);
      }

      // The number of managedInstances and serviceInstData will always be the same. They both
      // originate
      // from the same information.
      List<Object> managedInstances = getManagedInstances(managedClass);
      for (int i = 0; i < serviceInstData.size(); i++) {

        List<String> serviceAPIs = new LinkedList<>();

        if (serviceProvider.serviceAPIs().length > 0) {
          for (Class svcAPI : serviceProvider.serviceAPIs()) {
            serviceAPIs.add(svcAPI.getName());
          }
        } else if (serviceProvider.instances().length > 0) {
          OSGiServiceInstance svsInstAnn = serviceProvider.instances()[i];
          for (Class svcAPI : svsInstAnn.serviceAPIs()) {
            serviceAPIs.add(svcAPI.getName());
          }
        } else if (!serviceProvider.instanceFactoryClass().equals(InstanceFactory.class)) {
          String svcAPIList =
              serviceInstData.get(i).t1.getProperty(InstanceFactory.SERVICE_API_CLASSES_PROPERTY);
          if (svcAPIList != null) {
            for (String svcAPI : svcAPIList.split(":")) {
              serviceAPIs.add(svcAPI);
            }
          } else {
            Class[] interfaces = managedClass.getInterfaces();
            if (interfaces != null && interfaces.length > 0) {
              serviceAPIs.add(interfaces[0].getName());
            }
          }
        } else {
          Class[] interfaces = managedClass.getInterfaces();
          if (interfaces != null && interfaces.length > 0) {
            serviceAPIs.add(interfaces[0].getName());
          }
        }

        Tuple3<Properties, Object, List<String>> sd = serviceInstData.get(i);
        sd.t3 = serviceAPIs;
        sd.t2 = managedInstances.get(i);
      }

      for (Tuple3<Properties, Object, List<String>> sd : serviceInstData) {
        sd.t1.put(Constants.SERVICE_PID, managedClass.getName());
        if (!sd.t3.isEmpty()) {
          injectInstanceProps(sd.t2, sd.t1);
          for (String svcAPI : sd.t3) {
            ServiceRegistration serviceReg = context.registerService(svcAPI, sd.t2, sd.t1);

            serviceRegs.add(serviceReg);
            this.activatorLogger.info(
                "Registered '"
                    + managedClass.getName()
                    + "' as a service provider of '"
                    + svcAPI
                    + "' for bundle: "
                    + context.getBundle().getSymbolicName()
                    + "!");
          }
        } else {
          throw new IllegalArgumentException(
              "The @OSGiServiceProvider annotated service of class '"
                  + managedClass.getName()
                  + "' does not implement a service interface!");
        }
      }
    }
  }