io.wcm.testing.mock.osgi.MockBundleContext.java Source code

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Here is the source code for io.wcm.testing.mock.osgi.MockBundleContext.java

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/*
 * #%L
 * wcm.io
 * %%
 * Copyright (C) 2014 wcm.io
 * %%
 * 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.
 * #L%
 */
package io.wcm.testing.mock.osgi;

import java.io.File;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Dictionary;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;

import org.apache.commons.lang3.StringUtils;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleListener;
import org.osgi.framework.Filter;
import org.osgi.framework.FrameworkListener;
import org.osgi.framework.ServiceEvent;
import org.osgi.framework.ServiceListener;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;

/**
 * Mock {@link BundleContext} implementation.
 */
class MockBundleContext implements BundleContext {

    private final MockBundle bundle;
    private final List<MockServiceRegistration> registeredServices = new ArrayList<>();
    private final List<ServiceListener> serviceListeners = new ArrayList<>();

    public MockBundleContext(final MockBundle bundle) {
        this.bundle = bundle;
    }

    @Override
    public Bundle getBundle() {
        return this.bundle;
    }

    @Override
    public Filter createFilter(final String s) {
        // return filter that denies all
        return new MockFilter();
    }

    @Override
    public ServiceRegistration registerService(final String clazz, final Object service,
            final Dictionary properties) {
        String[] clazzes;
        if (StringUtils.isBlank(clazz)) {
            clazzes = new String[0];
        } else {
            clazzes = new String[] { clazz };
        }
        return registerService(clazzes, service, properties);
    }

    @SuppressWarnings("unchecked")
    @Override
    public ServiceRegistration registerService(final String[] clazzes, final Object service,
            final Dictionary properties) {
        MockServiceRegistration registration = new MockServiceRegistration(this.bundle, clazzes, service,
                properties);
        this.registeredServices.add(registration);
        notifyServiceListeners(ServiceEvent.REGISTERED, registration.getReference());
        return registration;
    }

    @Override
    public ServiceReference getServiceReference(final String clazz) {
        ServiceReference[] serviceRefs = getServiceReferences(clazz, null);
        if (serviceRefs != null && serviceRefs.length > 0) {
            return serviceRefs[0];
        } else {
            return null;
        }
    }

    @Override
    public ServiceReference[] getServiceReferences(final String clazz, final String filter) {
        Set<ServiceReference> result = new TreeSet<>();
        for (MockServiceRegistration serviceRegistration : this.registeredServices) {
            if (serviceRegistration.matches(clazz, filter)) {
                result.add(serviceRegistration.getReference());
            }
        }
        if (result.size() == 0) {
            return null;
        } else {
            return result.toArray(new ServiceReference[result.size()]);
        }
    }

    @Override
    public ServiceReference[] getAllServiceReferences(final String clazz, final String filter) {
        // for now just do the same as getServiceReferences
        return getServiceReferences(clazz, filter);
    }

    @Override
    public Object getService(final ServiceReference serviceReference) {
        return ((MockServiceReference) serviceReference).getService();
    }

    @Override
    public boolean ungetService(final ServiceReference serviceReference) {
        // do nothing for now
        return false;
    }

    @Override
    public void addServiceListener(final ServiceListener serviceListener) {
        addServiceListener(serviceListener, null);
    }

    @Override
    public void addServiceListener(final ServiceListener serviceListener, final String s) {
        if (!serviceListeners.contains(serviceListener)) {
            serviceListeners.add(serviceListener);
        }
    }

    @Override
    public void removeServiceListener(final ServiceListener serviceListener) {
        serviceListeners.remove(serviceListener);
    }

    private void notifyServiceListeners(int eventType, ServiceReference serviceReference) {
        final ServiceEvent event = new ServiceEvent(eventType, serviceReference);
        for (ServiceListener serviceListener : serviceListeners) {
            serviceListener.serviceChanged(event);
        }
    }

    @Override
    public void addBundleListener(final BundleListener bundleListener) {
        // accept method, but ignore it
    }

    @Override
    public void removeBundleListener(final BundleListener bundleListener) {
        // accept method, but ignore it
    }

    @Override
    public void addFrameworkListener(final FrameworkListener frameworkListener) {
        // accept method, but ignore it
    }

    @Override
    public void removeFrameworkListener(final FrameworkListener frameworkListener) {
        // accept method, but ignore it
    }

    Object locateService(final String name, final ServiceReference reference) {
        for (MockServiceRegistration serviceRegistration : this.registeredServices) {
            if (serviceRegistration.getReference() == reference) {
                return serviceRegistration.getService();
            }
        }
        return null;
    }

    @Override
    public Bundle[] getBundles() {
        return new Bundle[0];
    }

    // --- unsupported operations ---
    @Override
    public String getProperty(final String s) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Bundle installBundle(final String s) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Bundle installBundle(final String s, final InputStream inputStream) {
        throw new UnsupportedOperationException();
    }

    @Override
    public Bundle getBundle(final long l) {
        throw new UnsupportedOperationException();
    }

    @Override
    public File getDataFile(final String s) {
        throw new UnsupportedOperationException();
    }

}