package org.apache.archiva.redback.keys.cached;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  import java.util.List;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  
  import org.apache.archiva.redback.components.cache.Cache;
  import org.apache.archiva.redback.keys.AbstractKeyManager;
  import org.apache.archiva.redback.keys.AuthenticationKey;
  import org.apache.archiva.redback.keys.KeyManager;
  import org.apache.archiva.redback.keys.KeyManagerException;
  import org.apache.archiva.redback.keys.KeyNotFoundException;
  import org.springframework.stereotype.Service;
  
  /**
   * CachedKeyManager
   *
   * @author <a href="mailto:joakim@erdfelt.com">Joakim Erdfelt</a>
   */
  @Service("keyManager#cached")
  public class CachedKeyManager
      extends AbstractKeyManager
      implements KeyManager
  {
      @Inject
      @Named(value = "keyManager#jdo")
      private KeyManager keyImpl;
  
      @Inject
      @Named(value = "cache#keys")
      private Cache<String, AuthenticationKey> keysCache;
  
      public AuthenticationKey addKey( AuthenticationKey key )
      {
          if ( key != null )
          {
              keysCache.remove( key.getKey() );
          }
          return this.keyImpl.addKey( key );
      }
  
      public AuthenticationKey createKey( String principal, String purpose, int expirationMinutes )
          throws KeyManagerException
      {
          AuthenticationKey authkey = this.keyImpl.createKey( principal, purpose, expirationMinutes );
          keysCache.remove( authkey.getKey() );
          return authkey;
      }
  
      public void deleteKey( AuthenticationKey key )
          throws KeyManagerException
      {
          keysCache.remove( key.getKey() );
          this.keyImpl.deleteKey( key );
      }
  
      public void deleteKey( String key )
          throws KeyManagerException
      {
          keysCache.remove( key );
          this.keyImpl.deleteKey( key );
      }
  
      public void eraseDatabase()
      {
          try
          {
              this.keyImpl.eraseDatabase();
          }
          finally
          {
              this.keysCache.clear();
          }
      }
  
      public AuthenticationKey findKey( String key )
          throws KeyNotFoundException, KeyManagerException
      {
          try
         {
             AuthenticationKey authkey = keysCache.get( key );
             if ( authkey != null )
             {
                 assertNotExpired( authkey );
                 return authkey;
             }
             else
             {
                 authkey = this.keyImpl.findKey( key );
                 keysCache.put( key, authkey );
                 return authkey;
             }
         }
         catch ( KeyNotFoundException knfe )
         {
             // this is done to remove keys that have been expired.
             // TODO: need to make a listener for the key manager.
             keysCache.remove( key );
             throw knfe;
         }
     }
 
     public List<AuthenticationKey> getAllKeys()
     {
         log.debug( "NOT CACHED - .getAllKeys()" );
         return this.keyImpl.getAllKeys();
     }
 
     public String getId()
     {
         return "Cached Key Manager [" + this.keyImpl.getId() + "]";
     }
 
     public KeyManager getKeyImpl()
     {
         return keyImpl;
     }
 
     public void setKeyImpl( KeyManager keyImpl )
     {
         this.keyImpl = keyImpl;
     }
 
     public Cache getKeysCache()
     {
         return keysCache;
     }
 
     public void setKeysCache( Cache keysCache )
     {
         this.keysCache = keysCache;
     }
 }