utils/osgi/src/main/java/org/onlab/osgi/TestServiceDirectory.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.onlab.osgi;

import com.google.common.collect.ClassToInstanceMap;
import com.google.common.collect.MutableClassToInstanceMap;

/**
 * Service directory implementation suitable for testing.
 */
@SuppressWarnings("unchecked")
public class TestServiceDirectory implements ServiceDirectory {

    private ClassToInstanceMap<Object> services = MutableClassToInstanceMap.create();

    @Override
    public <T> T get(Class<T> serviceClass) {
        return services.getInstance(serviceClass);
    }

    /**
     * Adds a new service to the directory.
     *
     * @param serviceClass service class
     * @param service service instance
     * @return self
     */
    public TestServiceDirectory add(Class serviceClass, Object service) {
        services.putInstance(serviceClass, service);
        return this;
    }

}