sli/provider/src/main/java/org/onap/ccsdk/sli/core/sli/provider/SvcLogicClassResolver.java

   1 package org.onap.ccsdk.sli.core.sli.provider;
   2
   3 import org.osgi.framework.Bundle;
   4 import org.osgi.framework.BundleContext;
   5 import org.osgi.framework.FrameworkUtil;
   6 import org.osgi.framework.ServiceReference;
   7 import org.slf4j.Logger;
   8 import org.slf4j.LoggerFactory;
   9
  10 public class SvcLogicClassResolver {
  11     private static final Logger LOG = LoggerFactory.getLogger(SvcLogicClassResolver.class);
  12
  13     public static Object resolve(String className) {
  14
  15         Bundle bundle = FrameworkUtil.getBundle(SvcLogicClassResolver.class);
  16
  17         if (bundle == null) {
  18             // Running outside OSGi container (e.g. jUnit).  Use Reflection
  19             // to resolve class
  20             try {
  21                 return(Class.forName(className).newInstance());
  22             } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) {
  23
  24                 LOG.error("Could not resolve class "+className, e);
  25                 return null;
  26             }
  27
  28         } else {
  29             BundleContext bctx = bundle.getBundleContext();
  30             ServiceReference sref = bctx.getServiceReference(className);
  31             if (sref != null) {
  32                 return bctx.getService(sref);
  33             } else {
  34
  35                 LOG.warn("Could not find service reference object for class " + className);
  36                 return null;
  37             }
  38         }
  39     }
  40
  41 }