GetOrCreateKeyAction.java

/*
 * 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.nifi.admin.service.action;

import org.apache.nifi.admin.dao.DAOFactory;
import org.apache.nifi.admin.dao.KeyDAO;
import org.apache.nifi.key.Key;

/**
 * Gets a key for the specified user identity.
 */
public class GetOrCreateKeyAction implements AdministrationAction<Key> {

    private final String identity;

    public GetOrCreateKeyAction(String identity) {
        this.identity = identity;
    }

    @Override
    public Key execute(DAOFactory daoFactory) {
        final KeyDAO keyDao = daoFactory.getKeyDAO();

        Key key = keyDao.findLatestKeyByIdentity(identity);
        if (key == null) {
            key = keyDao.createKey(identity);
        }

        return key;
    }

}