/*
 * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.controller.config.manager.impl;

import org.opendaylight.controller.config.api.DynamicMBeanWithInstance;
import org.opendaylight.controller.config.api.ModuleIdentifier;
import org.opendaylight.controller.config.spi.Module;

public abstract class AbstractMockedModule implements Module {

    protected final AutoCloseable instance;
    private final ModuleIdentifier id;

    protected abstract AutoCloseable prepareMockedInstance() throws Exception;

    public AbstractMockedModule(DynamicMBeanWithInstance old, ModuleIdentifier id) {
        if(old!=null)
            instance = old.getInstance();
        else
            try {
                instance = prepareMockedInstance();
            } catch (Exception e) {
                throw new RuntimeException(e);
            }

        this.id = id==null ? new ModuleIdentifier(getClass().getCanonicalName(), "mock") : id;
    }


    @Override
    public boolean canReuse(Module oldModule) {
        return instance!=null;
    }

    @Override
    public void validate() {
    }

    @Override
    public AutoCloseable getInstance() {
        return instance;
    }

    @Override
    public ModuleIdentifier getIdentifier() {
        return id;
    }

}