BundleProvider.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011, Red Hat Middleware LLC, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * 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.jboss.arquillian.testenricher.osgi;

import java.lang.annotation.Annotation;
import java.util.concurrent.atomic.AtomicBoolean;

import org.jboss.arquillian.container.test.impl.enricher.resource.OperatesOnDeploymentAwareProvider;
import org.jboss.arquillian.core.api.Instance;
import org.jboss.arquillian.core.api.InstanceProducer;
import org.jboss.arquillian.core.api.annotation.Inject;
import org.jboss.arquillian.test.api.ArquillianResource;
import org.jboss.arquillian.test.spi.annotation.TestScoped;
import org.jboss.arquillian.test.spi.enricher.resource.ResourceProvider;
import org.osgi.framework.Bundle;

/**
 * {@link OperatesOnDeploymentAwareProvider} implementation to
 * provide {@link Bundle} injection to {@link ArquillianResource}-
 * annotated fields.
 *
 * @author Thomas.Diesler@jboss.com
 * @since 15-Oct-2012
 */
public class BundleProvider implements ResourceProvider {

    private AtomicBoolean initialized = new AtomicBoolean();

    @Inject
    @TestScoped
    private InstanceProducer<Bundle> bundleProducer;

    @Inject
    private Instance<Bundle> bundle;

    @Override
    public boolean canProvide(final Class<?> type) {
        return type.isAssignableFrom(Bundle.class);
    }

    @Override
    public Object lookup(ArquillianResource resource, Annotation... qualifiers) {
        initialize();
        return bundle.get();
    }

    private void initialize() {
        if (initialized.compareAndSet(false, true)) {
            bundleProducer.set(getBundle());
        }
    }

    static Bundle getBundle() {
        return BundleAssociation.getBundle();
    }
}