/**
 * Copyright (C) FuseSource, Inc.
 * http://fusesource.com
 *
 * Licensed 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.fusesource.fabric.service;

import java.io.IOException;
import javax.management.remote.JMXConnector;

import org.fusesource.fabric.api.FabricException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This implementation closes the connector down after each operation; so only really intended for web applications.
 *
 * @author ldywicki
 */
public abstract class NonCachingJmxTemplate extends JmxTemplateSupport {

    private static final Logger LOGGER = LoggerFactory.getLogger(NonCachingJmxTemplate.class);

    public <T> T execute(JmxConnectorCallback<T> callback) {
        JMXConnector connector = createConnector();
        if (connector == null) {
            throw new IllegalStateException("JMX connector can not be created");
        }
        try {
            return callback.doWithJmxConnector(connector);
        } catch (FabricException e) {
            throw e;
        } catch (Exception e) {
            throw new FabricException(e);
        } finally {
            try {
                connector.close();
            } catch (IOException e) {
            }
        }
    }

    protected abstract JMXConnector createConnector();

}
