appc-adapters/appc-iaas-adapter/appc-iaas-adapter-bundle/src/main/java/org/openecomp/appc/adapter/iaas/provider/operation/api/ProviderOperationFactory.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * openECOMP : APP-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.appc.adapter.iaas.provider.operation.api;
  23
  24 import org.openecomp.appc.adapter.iaas.provider.operation.impl.*;
  25 import org.openecomp.appc.adapter.iaas.provider.operation.common.enums.Operation;
  26 import org.openecomp.appc.exceptions.APPCException;
  27
  28 import java.util.HashMap;
  29 import java.util.Map;
  30
  31 /**
  32  * Singleton factory of provider operations objects with cache
  33  * @since September 26, 2016
  34  */
  35 public class ProviderOperationFactory {
  36
  37     /**
  38      * holds instance of the class
  39      */
  40     private static ProviderOperationFactory instance;
  41
  42     /**
  43      * holds concrete operations objects
  44      */
  45     private Map<Operation, IProviderOperation> operations;
  46
  47     /**
  48      * private constructor
  49      */
  50     private ProviderOperationFactory() {
  51         this.operations = new HashMap<>();
  52     }
  53
  54     /**
  55      * @return instance of the factory
  56      */
  57     public static ProviderOperationFactory getInstance() {
  58         if (instance == null) {
  59             instance = new ProviderOperationFactory();
  60         }
  61         return instance;
  62     }
  63
  64     /**
  65      * @param op
  66      * @return concrete operation impl
  67      */
  68     public IProviderOperation getOperationObject(Operation op) throws APPCException {
  69
  70         IProviderOperation opObject = operations.get(op);
  71         if (opObject == null) {
  72             switch (op) {
  73                 case EVACUATE_SERVICE:
  74                     opObject = new EvacuateServer();
  75                     break;
  76                 case MIGRATE_SERVICE:
  77                     opObject = new MigrateServer();
  78                     break;
  79                 case REBUILD_SERVICE:
  80                     opObject = new RebuildServer();
  81                     break;
  82                 case RESTART_SERVICE:
  83                     opObject = new RestartServer();
  84                     break;
  85                 case VMSTATUSCHECK_SERVICE:
  86                     opObject = new VmStatuschecker();
  87                     break;
  88                 case SNAPSHOT_SERVICE:
  89                     opObject = new CreateSnapshot();
  90                     break;
  91                 case TERMINATE_STACK:
  92                     opObject = new TerminateStack();
  93                     break;
  94                 case SNAPSHOT_STACK:
  95                     opObject = new SnapshotStack();
  96                     break;
  97                 case RESTORE_STACK:
  98                     opObject = new RestoreStack();
  99                     break;
 100                 case START_SERVICE:
 101                     opObject = new StartServer();
 102                     break;
 103                 case STOP_SERVICE:
 104                     opObject = new StopServer();
 105                     break;
 106                 case TERMINATE_SERVICE:
 107                     opObject = new TerminateServer();
 108                     break;
 109                 case LOOKUP_SERVICE:
 110                     opObject = new LookupServer();
 111                     break;
 112                 default:
 113                     throw new APPCException("Unsupported provider operation.");
 114             }
 115             operations.put(op,opObject);
 116         }
 117         return opObject;
 118     }
 119 }