sli/provider/src/main/java/org/openecomp/sdnc/sli/provider/SvcLogicAdaptorFactory.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * openECOMP : SDN-C
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights
   6  *                                              reserved.
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 package org.openecomp.sdnc.sli.provider;
  23
  24 import java.util.HashMap;
  25
  26 import org.openecomp.sdnc.sli.SvcLogicAdaptor;
  27 import org.osgi.framework.BundleContext;
  28 import org.osgi.framework.FrameworkUtil;
  29 import org.osgi.framework.ServiceReference;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public class SvcLogicAdaptorFactory {
  34
  35         private static final Logger LOG = LoggerFactory
  36                         .getLogger(SvcLogicAdaptorFactory.class);
  37
  38         private static HashMap<String, SvcLogicAdaptor> adaptorMap = new HashMap<String, SvcLogicAdaptor>();
  39
  40         public static void registerAdaptor(SvcLogicAdaptor adaptor) {
  41                 String name = adaptor.getClass().getName();
  42                 LOG.info("Registering adaptor " + name);
  43                 adaptorMap.put(name, adaptor);
  44
  45         }
  46
  47         public static void unregisterAdaptor(String name) {
  48                 if (adaptorMap.containsKey(name)) {
  49                         LOG.info("Unregistering " + name);
  50                         adaptorMap.remove(name);
  51                 }
  52         }
  53
  54         public static SvcLogicAdaptor getInstance(String name) {
  55                 if (adaptorMap.containsKey(name)) {
  56                         return (adaptorMap.get(name));
  57                 } else {
  58                         BundleContext bctx = null;
  59                         try
  60                         {
  61                          bctx = FrameworkUtil.getBundle(SvcLogicAdaptorFactory.class)
  62                                         .getBundleContext();
  63                         }
  64                         catch (Exception e)
  65                         {
  66                                 LOG.debug("Caught exception trying to locate device adaptor "+name, e);
  67                                 return(null);
  68                         }
  69
  70                         ServiceReference sref = bctx.getServiceReference(name);
  71
  72                         if (sref != null) {
  73                                 SvcLogicAdaptor adaptor = (SvcLogicAdaptor) bctx
  74                                                 .getService(sref);
  75
  76                                 if (adaptor != null) {
  77                                         registerAdaptor(adaptor);
  78
  79                                         return (adaptor);
  80                                 }
  81                                 return (null);
  82                         }
  83                 }
  84                 return(null);
  85         }
  86 }