logback/itests/standard-log4j2/src/main/java/org/apache/felix/logback/test/Activator.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.felix.logback.test;

import java.util.Dictionary;
import java.util.Hashtable;

import org.apache.logging.log4j.spi.Provider;
import org.apache.logging.slf4j.SLF4JProvider;
import org.osgi.annotation.bundle.Header;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceRegistration;

@Header(name = Constants.BUNDLE_ACTIVATOR, value = "${@class}")
public class Activator implements BundleActivator {

    @Override
    public void start(BundleContext bundleContext) throws Exception {
        Provider slf4jProvider = new SLF4JProvider();
        Dictionary<String, Object> properties = new Hashtable<>();
        properties.put("APIVersion", slf4jProvider.getVersions());
        serviceRegistration = bundleContext.registerService(Provider.class, slf4jProvider, properties);
    }

    @Override
    public void stop(BundleContext bundleContext) throws Exception {
        serviceRegistration.unregister();
    }

    private volatile ServiceRegistration<Provider> serviceRegistration;

}