/**
*
* 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.
*/
package org.apache.airavata.credential.store.util;

import java.security.PrivateKey;
import java.util.HashMap;
import java.util.Map;

/**
 * User: AmilaJ (amilaj@apache.org)
 * Date: 9/5/13
 * Time: 6:47 PM
 */
public class PrivateKeyStore {

    private Map<String, PrivateKey> privateKeyMap;

    private static PrivateKeyStore privateKeyStore = null;

    private PrivateKeyStore() {
        privateKeyMap = new HashMap<String, PrivateKey>();
    }

    public static PrivateKeyStore getPrivateKeyStore() {

        if (privateKeyStore == null) {
            privateKeyStore = new PrivateKeyStore();
        }

        return privateKeyStore;
    }

    public synchronized void addKey(String tokenId, PrivateKey privateKey) {

        privateKeyMap.put(tokenId, privateKey);
    }

    public synchronized PrivateKey getKey(String tokenId) {

        PrivateKey privateKey = privateKeyMap.get(tokenId);

        if (privateKey != null) {
            privateKeyMap.remove(tokenId);
        }

        return privateKey;
    }
}
