Coverage report

  %line %branch
org.apache.jcs.auxiliary.lateral.LateralCacheRestore
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 1  
 package org.apache.jcs.auxiliary.lateral;
 2  
 
 3  
 /*
 4  
  * Licensed to the Apache Software Foundation (ASF) under one
 5  
  * or more contributor license agreements.  See the NOTICE file
 6  
  * distributed with this work for additional information
 7  
  * regarding copyright ownership.  The ASF licenses this file
 8  
  * to you under the Apache License, Version 2.0 (the
 9  
  * "License"); you may not use this file except in compliance
 10  
  * with the License.  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,
 15  
  * software distributed under the License is distributed on an
 16  
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 17  
  * KIND, either express or implied.  See the License for the
 18  
  * specific language governing permissions and limitations
 19  
  * under the License.
 20  
  */
 21  
 
 22  
 import org.apache.commons.logging.Log;
 23  
 import org.apache.commons.logging.LogFactory;
 24  
 import org.apache.jcs.auxiliary.lateral.behavior.ILateralCacheManager;
 25  
 import org.apache.jcs.auxiliary.lateral.behavior.ILateralCacheObserver;
 26  
 import org.apache.jcs.auxiliary.lateral.behavior.ILateralCacheService;
 27  
 import org.apache.jcs.engine.behavior.ICacheRestore;
 28  
 
 29  
 /**
 30  
  * Used to repair the lateral caches managed by the associated instance of
 31  
  * LateralCacheManager.
 32  
  *
 33  
  */
 34  
 public class LateralCacheRestore
 35  
     implements ICacheRestore
 36  
 {
 37  0
     private final static Log log = LogFactory.getLog( LateralCacheRestore.class );
 38  
 
 39  
     private final ILateralCacheManager lcm;
 40  
 
 41  0
     private boolean canFix = true;
 42  
 
 43  
     private Object lateralObj;
 44  
 
 45  
     /**
 46  
      * Constructs with the given instance of LateralCacheManager.
 47  
      *
 48  
      * @param lcm
 49  
      */
 50  
     public LateralCacheRestore( ILateralCacheManager lcm )
 51  0
     {
 52  0
         this.lcm = lcm;
 53  0
     }
 54  
 
 55  
     /**
 56  
      * Returns true iff the connection to the lateral host for the corresponding
 57  
      * cache manager can be successfully re-established.
 58  
      *
 59  
      * @return whether or not the cache can be fixed.
 60  
      */
 61  
     public boolean canFix()
 62  
     {
 63  0
         if ( !canFix )
 64  
         {
 65  0
             return canFix;
 66  
         }
 67  
 
 68  
         try
 69  
         {
 70  0
             lateralObj = lcm.fixService();
 71  
         }
 72  0
         catch ( Exception ex )
 73  
         {
 74  0
             log.error( "Can't fix " + ex.getMessage() );
 75  0
             canFix = false;
 76  0
         }
 77  
 
 78  0
         return canFix;
 79  
     }
 80  
 
 81  
     /**
 82  
      * Fixes up all the caches managed by the associated cache manager.
 83  
      */
 84  
     public void fix()
 85  
     {
 86  0
         if ( !canFix )
 87  
         {
 88  0
             return;
 89  
         }
 90  0
         lcm.fixCaches( (ILateralCacheService) lateralObj, (ILateralCacheObserver) lateralObj );
 91  0
         String msg = "Lateral connection resumed.";
 92  0
         log.info( msg );
 93  0
         log.debug( msg );
 94  0
     }
 95  
 }

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