redback-keys/redback-keys-providers/redback-keys-cached/src/main/java/org/apache/archiva/redback/keys/cached/CachedKeyManager.java

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#jpa")
    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;
    }
}