scr/state/src/main/java/org/apache/karaf/scr/state/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.karaf.scr.state;

import org.apache.karaf.bundle.core.BundleStateService;
import org.apache.karaf.util.tracker.BaseActivator;
import org.apache.karaf.util.tracker.annotation.ProvideService;
import org.apache.karaf.util.tracker.annotation.RequireService;
import org.apache.karaf.util.tracker.annotation.Services;
import org.osgi.service.component.runtime.ServiceComponentRuntime;

@Services(requires = @RequireService(ServiceComponentRuntime.class),
          provides = @ProvideService(BundleStateService.class))
public class Activator extends BaseActivator {

    @Override
    protected void doStart() throws Exception {
        ServiceComponentRuntime scr = getTrackedService(ServiceComponentRuntime.class);
        if (scr != null) {
            register(BundleStateService.class, new ScrBundleStateService(scr));
        }
    }

}