TestOptionalMultipleExport.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.
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package org.apache.felix.ipojo.runtime.core.exporter;

import org.apache.felix.ipojo.ComponentInstance;
import org.apache.felix.ipojo.Factory;
import org.apache.felix.ipojo.runtime.core.Common;
import org.apache.felix.ipojo.runtime.core.services.BazService;
import org.apache.felix.ipojo.runtime.core.services.FooService;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.osgi.framework.ServiceReference;

import java.util.Properties;

import static org.junit.Assert.*;

public class TestOptionalMultipleExport extends Common {

    ComponentInstance export3;
    Factory fooProvider;
    ComponentInstance foo1 = null, foo2 = null;

    @Before
    public void setUp() {
        fooProvider = ipojoHelper.getFactory("BazProviderType");
        assertNotNull("Check fooProvider availability", fooProvider);

        Properties p1 = new Properties();
        p1.put("instance.name", "foo1");
        Properties p2 = new Properties();
        p2.put("instance.name", "foo2");

        try {
            foo1 = fooProvider.createComponentInstance(p1);
            foo2 = fooProvider.createComponentInstance(p2);
        } catch (Exception e) {
            fail("Fail to create foos : " + e.getMessage());
        }

        foo1.stop();
        foo2.stop();

        Factory factory = ipojoHelper.getFactory("composite.export.4");
        Properties props = new Properties();
        props.put("instance.name", "export");
        try {
            export3 = factory.createComponentInstance(props);
        } catch (Exception e) {
            fail("Fail to instantiate exporter " + e.getMessage());
        }
    }

    @After
    public void tearDown() {
        foo1.dispose();
        foo2.dispose();
        export3.dispose();
        foo1 = null;
        foo2 = null;
        export3 = null;
    }

    @Test
    public void test1() {
        export3.start();

        // Check that no foo service are available
        assertEquals("Check no foo service", osgiHelper.getServiceReferences(FooService.class.getName(), null).length, 0);

        // Test invalidity
        assertTrue("Check validity - 0", export3.getState() == ComponentInstance.VALID);
        assertFalse("Check providing - 0", isFooServiceProvided());
        assertEquals("Check number of provides - 0", countFooServiceProvided(), 0);

        foo1.start();
        assertTrue("Check validity - 1", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 1", isFooServiceProvided());
        assertEquals("Check number of provides - 1", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 1", invoke(1));

        foo2.start();
        assertTrue("Check validity - 2", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 2", isFooServiceProvided());
        assertEquals("Check number of provides - 2", countFooServiceProvided(), 2);
        assertTrue("Check invocation - 2", invoke(2));

        foo1.stop();
        assertTrue("Check validity - 3", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 3", isFooServiceProvided());
        assertEquals("Check number of provides - 3 (" + countFooServiceProvided() + ")", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 3", invoke(1));

        foo2.stop();
        assertTrue("Check validity - 4", export3.getState() == ComponentInstance.VALID);
        assertFalse("Check providing - 4", isFooServiceProvided());
        assertEquals("Check number of provides - 4", countFooServiceProvided(), 0);

        foo2.start();
        assertTrue("Check validity - 5", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 5", isFooServiceProvided());
        assertEquals("Check number of provides - 5", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 5", invoke(1));
    }

    @Test
    public void test2() {
        export3.start();

        // Test invalidity
        assertTrue("Check validity - 0", export3.getState() == ComponentInstance.VALID);
        assertFalse("Check providing - 0", isFooServiceProvided());
        assertEquals("Check number of provides - 0", countFooServiceProvided(), 0);

        foo1.start();
        assertTrue("Check validity - 1", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 1", isFooServiceProvided());
        assertEquals("Check number of provides - 1", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 1", invoke());

        foo2.start();
        assertTrue("Check validity - 2", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 2", isFooServiceProvided());
        assertEquals("Check number of provides - 2", countFooServiceProvided(), 2);
        assertTrue("Check invocation - 2", invoke(2));

        foo2.stop();
        assertTrue("Check validity - 3", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 3", isFooServiceProvided());
        assertEquals("Check number of provides - 3", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 3", invoke(1));

        foo1.stop();
        assertTrue("Check validity - 4", export3.getState() == ComponentInstance.VALID);
        assertFalse("Check providing - 4", isFooServiceProvided());
        assertEquals("Check number of provides - 4", countFooServiceProvided(), 0);

        foo1.start();
        assertTrue("Check validity - 5", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 5", isFooServiceProvided());
        assertEquals("Check number of provides - 5", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 5", invoke(1));
    }

    @Test
    public void test3() {
        foo1.start();
        foo2.start();

        export3.start();
        assertTrue("Check validity - 1", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 1", isFooServiceProvided());
        assertEquals("Check number of provides - 1", countFooServiceProvided(), 2);
        assertTrue("Check invocation - 1", invoke(2));

        foo1.stop();
        assertTrue("Check validity - 2", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 2", isFooServiceProvided());
        assertEquals("Check number of provides - 2", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 2", invoke(1));

        foo2.stop();
        assertTrue("Check validity - 3", export3.getState() == ComponentInstance.VALID);
        assertFalse("Check providing - 3", isFooServiceProvided());
        assertEquals("Check number of provides - 3", countFooServiceProvided(), 0);

        foo1.start();
        assertTrue("Check validity - 4", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 4", isFooServiceProvided());
        assertEquals("Check number of provides - 4", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 4", invoke(1));
    }

    @Test
    public void test4() {
        foo1.start();
        foo2.start();

        export3.start();
        assertTrue("Check validity - 1", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 1", isFooServiceProvided());
        assertEquals("Check number of provides - 1", countFooServiceProvided(), 2);
        assertTrue("Check invocation - 1", invoke(2));

        foo2.stop();
        assertTrue("Check validity - 2", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 2", isFooServiceProvided());
        assertEquals("Check number of provides - 2", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 2", invoke(1));

        foo1.stop();
        assertTrue("Check validity - 3", export3.getState() == ComponentInstance.VALID);
        assertFalse("Check providing - 3", isFooServiceProvided());
        assertEquals("Check number of provides - 3", countFooServiceProvided(), 0);

        foo2.start();
        assertTrue("Check validity - 4", export3.getState() == ComponentInstance.VALID);
        assertTrue("Check providing - 4", isFooServiceProvided());
        assertEquals("Check number of provides - 4", countFooServiceProvided(), 1);
        assertTrue("Check invocation - 4", invoke(1));
    }


    private boolean isFooServiceProvided() {
        ServiceReference ref = ipojoHelper.getServiceReferenceByName(BazService.class.getName(), export3.getInstanceName());
        return ref != null;
    }

    private int countFooServiceProvided() {
        ServiceReference[] refs = osgiHelper.getServiceReferences(BazService.class.getName(), "(instance.name=" + export3.getInstanceName() + ")");
        return refs.length;
    }

    private boolean invoke() {
        ServiceReference ref = ipojoHelper.getServiceReferenceByName(BazService.class.getName(), export3.getInstanceName());
        if (ref == null) {
            return false;
        }
        BazService fs = (BazService) getContext().getService(ref);
        getContext().ungetService(ref);
        return fs.foo();
    }

    private boolean invoke(int nb) {
        ServiceReference[] refs = osgiHelper.getServiceReferences(BazService.class.getName(), "(instance.name=" + export3.getInstanceName() + ")");
        if (refs == null) {
            return false;
        }
        if (nb > refs.length) {
            return false;
        }
        for (int i = 0; i < nb; i++) {
            BazService fs = (BazService) getContext().getService(refs[i]);
            getContext().ungetService(refs[i]);
            if (!fs.foo()) {
                return false;
            }
        }
        return true;
    }


}