/*  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.aries.blueprint.itests;

import static org.junit.Assert.assertNotNull;
import static org.ops4j.pax.exam.CoreOptions.bootDelegationPackages;
import static org.ops4j.pax.exam.CoreOptions.equinox;
import static org.ops4j.pax.exam.CoreOptions.options;
import static org.ops4j.pax.exam.CoreOptions.systemProperty;
import static org.ops4j.pax.exam.CoreOptions.wrappedBundle;
import static org.ops4j.pax.exam.OptionUtils.combine;
import static org.ops4j.pax.exam.container.def.PaxRunnerOptions.vmOption;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import junit.framework.Assert;

import org.apache.aries.blueprint.testquiescebundle.TestBean;
import org.apache.aries.quiesce.manager.QuiesceCallback;
import org.apache.aries.quiesce.participant.QuiesceParticipant;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.ops4j.pax.exam.CoreOptions;
import org.ops4j.pax.exam.Inject;
import org.ops4j.pax.exam.Option;
import org.ops4j.pax.exam.container.def.options.VMOption;
import org.ops4j.pax.exam.junit.JUnit4TestRunner;
import org.ops4j.pax.exam.options.BootDelegationOption;
import org.ops4j.pax.exam.options.MavenArtifactProvisionOption;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.Filter;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.Version;
import org.osgi.util.tracker.ServiceTracker;

@RunWith(JUnit4TestRunner.class)
public class QuiesceBlueprintTest extends AbstractIntegrationTest{

  private static class TestQuiesceCallback implements QuiesceCallback
  {
    private int calls = 0;

	public void bundleQuiesced(Bundle... bundlesQuiesced) {
		System.out.println("bundleQuiesced "+ bundlesQuiesced);
	      calls++;
	}
	
	public int getCalls() {
		return calls;
	}
  }
  
  @Inject
  protected BundleContext bundleContext;
 
  
  private QuiesceParticipant getParticipant(String bundleName) throws InvalidSyntaxException {
    ServiceReference[] refs = bundleContext.getServiceReferences(QuiesceParticipant.class.getName(), null);
    
    if(refs != null) {
      for(ServiceReference ref : refs) {
        if(ref.getBundle().getSymbolicName().equals(bundleName))
          return (QuiesceParticipant) bundleContext.getService(ref);
        else System.out.println(ref.getBundle().getSymbolicName());
      }
    }
    
    
    return null;
  }

  @org.ops4j.pax.exam.junit.Configuration
  public static Option[] configuration() {
    Option[] options = options(
        bootDelegationPackages("javax.transaction", "javax.transaction.*"),
        vmOption("-Dorg.osgi.framework.system.packages=javax.accessibility,javax.activation,javax.activity,javax.annotation,javax.annotation.processing,javax.crypto,javax.crypto.interfaces,javax.crypto.spec,javax.imageio,javax.imageio.event,javax.imageio.metadata,javax.imageio.plugins.bmp,javax.imageio.plugins.jpeg,javax.imageio.spi,javax.imageio.stream,javax.jws,javax.jws.soap,javax.lang.model,javax.lang.model.element,javax.lang.model.type,javax.lang.model.util,javax.management,javax.management.loading,javax.management.modelmbean,javax.management.monitor,javax.management.openmbean,javax.management.relation,javax.management.remote,javax.management.remote.rmi,javax.management.timer,javax.naming,javax.naming.directory,javax.naming.event,javax.naming.ldap,javax.naming.spi,javax.net,javax.net.ssl,javax.print,javax.print.attribute,javax.print.attribute.standard,javax.print.event,javax.rmi,javax.rmi.CORBA,javax.rmi.ssl,javax.script,javax.security.auth,javax.security.auth.callback,javax.security.auth.kerberos,javax.security.auth.login,javax.security.auth.spi,javax.security.auth.x500,javax.security.cert,javax.security.sasl,javax.sound.midi,javax.sound.midi.spi,javax.sound.sampled,javax.sound.sampled.spi,javax.sql,javax.sql.rowset,javax.sql.rowset.serial,javax.sql.rowset.spi,javax.swing,javax.swing.border,javax.swing.colorchooser,javax.swing.event,javax.swing.filechooser,javax.swing.plaf,javax.swing.plaf.basic,javax.swing.plaf.metal,javax.swing.plaf.multi,javax.swing.plaf.synth,javax.swing.table,javax.swing.text,javax.swing.text.html,javax.swing.text.html.parser,javax.swing.text.rtf,javax.swing.tree,javax.swing.undo,javax.tools,javax.xml,javax.xml.bind,javax.xml.bind.annotation,javax.xml.bind.annotation.adapters,javax.xml.bind.attachment,javax.xml.bind.helpers,javax.xml.bind.util,javax.xml.crypto,javax.xml.crypto.dom,javax.xml.crypto.dsig,javax.xml.crypto.dsig.dom,javax.xml.crypto.dsig.keyinfo,javax.xml.crypto.dsig.spec,javax.xml.datatype,javax.xml.namespace,javax.xml.parsers,javax.xml.soap,javax.xml.stream,javax.xml.stream.events,javax.xml.stream.util,javax.xml.transform,javax.xml.transform.dom,javax.xml.transform.sax,javax.xml.transform.stax,javax.xml.transform.stream,javax.xml.validation,javax.xml.ws,javax.xml.ws.handler,javax.xml.ws.handler.soap,javax.xml.ws.http,javax.xml.ws.soap,javax.xml.ws.spi,javax.xml.xpath,org.ietf.jgss,org.omg.CORBA,org.omg.CORBA.DynAnyPackage,org.omg.CORBA.ORBPackage,org.omg.CORBA.TypeCodePackage,org.omg.CORBA.portable,org.omg.CORBA_2_3,org.omg.CORBA_2_3.portable,org.omg.CosNaming,org.omg.CosNaming.NamingContextExtPackage,org.omg.CosNaming.NamingContextPackage,org.omg.Dynamic,org.omg.DynamicAny,org.omg.DynamicAny.DynAnyFactoryPackage,org.omg.DynamicAny.DynAnyPackage,org.omg.IOP,org.omg.IOP.CodecFactoryPackage,org.omg.IOP.CodecPackage,org.omg.Messaging,org.omg.PortableInterceptor,org.omg.PortableInterceptor.ORBInitInfoPackage,org.omg.PortableServer,org.omg.PortableServer.CurrentPackage,org.omg.PortableServer.POAManagerPackage,org.omg.PortableServer.POAPackage,org.omg.PortableServer.ServantLocatorPackage,org.omg.PortableServer.portable,org.omg.SendingContext,org.omg.stub.java.rmi,org.w3c.dom,org.w3c.dom.bootstrap,org.w3c.dom.css,org.w3c.dom.events,org.w3c.dom.html,org.w3c.dom.ls,org.w3c.dom.ranges,org.w3c.dom.stylesheets,org.w3c.dom.traversal,org.w3c.dom.views,org.xml.sax,org.xml.sax.ext,org.xml.sax.helpers,javax.transaction;partial=true;mandatory:=partial,javax.transaction.xa;partial=true;mandatory:=partial"),
        
        // Log
        mavenBundle("org.ops4j.pax.logging", "pax-logging-api"),
        mavenBundle("org.ops4j.pax.logging", "pax-logging-service"),
        // Felix Config Admin
        mavenBundle("org.apache.felix", "org.apache.felix.configadmin"),
        // Felix mvn url handler
        mavenBundle("org.ops4j.pax.url", "pax-url-mvn"),

        // this is how you set the default log level when using pax
        // logging (logProfile)
        systemProperty("org.ops4j.pax.logging.DefaultServiceLog.level").value("DEBUG"),

        // Bundles
        mavenBundle("asm","asm-all"),
        
        mavenBundle("org.apache.aries.quiesce", "org.apache.aries.quiesce.api"),
        mavenBundle("org.apache.aries", "org.apache.aries.util"),
        mavenBundle("org.apache.aries.proxy", "org.apache.aries.proxy"),
        mavenBundle("asm", "asm-all"),
        mavenBundle("org.apache.aries.blueprint", "org.apache.aries.blueprint"), 
        mavenBundle("org.apache.aries.blueprint", "org.apache.aries.blueprint.testbundlea").noStart(),
        mavenBundle("org.apache.aries.blueprint", "org.apache.aries.blueprint.testbundleb").noStart(),
        mavenBundle("org.apache.aries.blueprint", "org.apache.aries.blueprint.testquiescebundle"),
        //mavenBundle("org.apache.aries.blueprint", "org.apache.aries.blueprint.cm"),
        mavenBundle("org.osgi", "org.osgi.compendium"),
        
//        new VMOption( "-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000" ),
        
        equinox().version("3.5.0"));
    options = updateOptions(options);
    return options;
  }
  
  
  protected Bundle getBundle(String symbolicName) {
    return getBundle(symbolicName, null);
  }

  protected Bundle getBundle(String bundleSymbolicName, String version) {
    Bundle result = null;
    for (Bundle b : bundleContext.getBundles()) {
      if (b.getSymbolicName().equals(bundleSymbolicName)) {
        if (version == null
            || b.getVersion().equals(Version.parseVersion(version))) {
          result = b;
          break;
        }
      }
    }
    return result;
  }

  public static BootDelegationOption bootDelegation() {
    return new BootDelegationOption("org.apache.aries.unittest.fixture");
  }
  
  public static MavenArtifactProvisionOption mavenBundle(String groupId,
      String artifactId) {
    return CoreOptions.mavenBundle().groupId(groupId).artifactId(artifactId)
        .versionAsInProject();
  }

  @Test
  public void testBasicQuieseEmptyCounter() throws Exception 
  {
	  //This test checks that a single bundle when called will not quiesce while 
	  //there is an active request (method sleeps), but will quiesce after the 
	  //request is completed. 
	  
	System.out.println("In testBasicQuieseEmptyCounter");
	Object obj = getOsgiService(TestBean.class);
	
	if (obj != null)
	{
	  QuiesceParticipant participant = getParticipant("org.apache.aries.blueprint");
	  
	  if (participant != null)
	  {
	    System.out.println(obj.getClass().getName());

	    TestQuiesceCallback callback = new TestQuiesceCallback();
	    
	    Bundle bundle = getBundle("org.apache.aries.blueprint.testquiescebundle");
	    
	    System.out.println("Got the bundle");
	    
	    List<Bundle> bundles = new ArrayList<Bundle>();
	    bundles.add(bundle);
	    
	    Thread t = new Thread(new TestBeanClient((TestBean)obj, 2000));
	    t.start();

	    System.out.println("Thread Started");
	    
	    participant.quiesce(callback, bundles);
	    
	    System.out.println("Called Quiesce");
	    
	    Thread.sleep(1000);
	    
	    Assert.assertTrue("Quiesce callback should not have occurred yet; calls should be 0, but it is "+callback.getCalls(), callback.getCalls()==0);
	    
	    Thread.sleep(1500);
	    
	    System.out.println("After second sleep");
	    
	    Assert.assertTrue("Quiesce callback should have occurred once; calls should be 1, but it is "+callback.getCalls(), callback.getCalls()==1);
	    
 	  }
  	  else
	  {
		throw new Exception("No Quiesce Participant found for the blueprint service");
	  }
  
	  System.out.println("done");
	}
	else
	{
		throw new Exception("No Service returned for " + TestBean.class);
	}
  }
  
  @Test
  public void testNoServicesQuiesce() throws Exception {
   
   //This test covers the case where one of the bundles being asked to quiesce has no 
   //services. It should be quiesced immediately.
	  
   System.out.println("In testNoServicesQuiesce");
	Object obj = getOsgiService(TestBean.class);
	
	if (obj != null)
	{    
		QuiesceParticipant participant = getParticipant("org.apache.aries.blueprint");
		
		if (participant != null)
		{
			TestQuiesceCallback callbackA = new TestQuiesceCallback();
			TestQuiesceCallback callbackB = new TestQuiesceCallback();
		    
			//bundlea provides the ns handlers, bean processors, interceptors etc for this test.
	        Bundle bundlea = getBundle("org.apache.aries.blueprint.testbundlea");
	        assertNotNull(bundlea);
	        bundlea.start();
	        
	        //bundleb has no services and makes use of the extensions provided by bundlea
	        Bundle bundleb = getBundle("org.apache.aries.blueprint.testbundleb");
	        assertNotNull(bundleb);
	        bundleb.start();
	        
			participant.quiesce(callbackB, Collections.singletonList(getBundle(
				"org.apache.aries.blueprint.testbundleb")));
			
		    System.out.println("Called Quiesce");
		    
		    Thread.sleep(200);
		    
		    Assert.assertTrue("Quiesce callback B should have occurred; calls should be 1, but it is "+callbackB.getCalls(), callbackB.getCalls()==1);
		    Assert.assertTrue("Quiesce callback A should not have occurred yet; calls should be 0, but it is "+callbackA.getCalls(), callbackA.getCalls()==0);
		    
		    participant.quiesce(callbackA, Collections.singletonList(getBundle(
			"org.apache.aries.blueprint.testbundlea")));
				    
		    Thread.sleep(1000);
		    
		    System.out.println("After second sleep");
		    
		    Assert.assertTrue("Quiesce callback A should have occurred once; calls should be 1, but it is "+callbackA.getCalls(), callbackA.getCalls()==1);
		    Assert.assertTrue("Quiesce callback B should have occurred once; calls should be 1, but it is "+callbackB.getCalls(), callbackB.getCalls()==1);
		    
		}else{
			throw new Exception("No Quiesce Participant found for the blueprint service");
		}
	}else{
		throw new Exception("No Service returned for " + TestBean.class);
	}
  }

  @Test
  public void testMultiBundleQuiesce() throws Exception {
   
   //This test covers the case where two bundles are quiesced at the same time. 
   //Bundle A should quiesce immediately, quiesce bundle should quiesce after the 
   //request has completed.
	  
   System.out.println("In testMultiBundleQuiesce");
	Object obj = getOsgiService(TestBean.class);
	
	if (obj != null)
	{    
		QuiesceParticipant participant = getParticipant("org.apache.aries.blueprint");
		
		if (participant != null)
		{
			TestQuiesceCallback callback = new TestQuiesceCallback();
		    
			//bundlea provides the ns handlers, bean processors, interceptors etc for this test.
	        Bundle bundlea = getBundle("org.apache.aries.blueprint.testbundlea");
	        assertNotNull(bundlea);
	        bundlea.start();
	        
	        //quiesce bundle will sleep for a second so will quiesce after that
		    Bundle bundleq = getBundle("org.apache.aries.blueprint.testquiescebundle");
		    
		    System.out.println("Got the bundle");
		    
		    List<Bundle> bundles = new ArrayList<Bundle>();
		    bundles.add(bundlea);
		    bundles.add(bundleq);
		    
		    Thread t = new Thread(new TestBeanClient((TestBean)obj, 1500));
		    t.start();
		    Thread.sleep(200);
	        
			participant.quiesce(callback, bundles);
			
		    System.out.println("Called Quiesce");
		    
		    Thread.sleep(500);
		    
		    Assert.assertTrue("Quiesce callback should have occurred once for bundle a but not for bundle q; calls should be 1, but it is "+callback.getCalls(), callback.getCalls()==1);
		    
		    Thread.sleep(1500);
		    
		    System.out.println("After second sleep");
		    
		    Assert.assertTrue("Quiesce callback should have occurred twice, once for bundle a and q respectively; calls should be 2, but it is "+callback.getCalls(), callback.getCalls()==2);
		    
		}else{
			throw new Exception("No Quiesce Participant found for the blueprint service");
		}
	}else{
		throw new Exception("No Service returned for " + TestBean.class);
	}
  }
  
  @Test
  public void testMultiRequestQuiesce() throws Exception {
   
   //This test covers the case where we have two active requests when 
   //the bundle is being quiesced.
	  
   System.out.println("In testMultiRequestQuiesce");
	Object obj = getOsgiService(TestBean.class);
	
	if (obj != null)
	{    
		QuiesceParticipant participant = getParticipant("org.apache.aries.blueprint");
		
		if (participant != null)
		{
			TestQuiesceCallback callback = new TestQuiesceCallback();
			TestBeanClient client =  new TestBeanClient((TestBean)obj, 1500);
		    

	        //quiesce bundle will sleep for a second so will quiesce after that
		    Bundle bundle = getBundle("org.apache.aries.blueprint.testquiescebundle");
		    
		    System.out.println("Got the bundle");
		    
		    List<Bundle> bundles = new ArrayList<Bundle>();
		    bundles.add(bundle);
		    
		    Thread t = new Thread(client);
		    t.start();
	        
			participant.quiesce(callback, bundles);
			
		    System.out.println("Called Quiesce, putting in a new request");
		    
		    Thread t2 = new Thread(client);
		    t2.start();
		    
		    Thread.sleep(5000);
		    
		    Assert.assertTrue("Quiesce callback should have occurred once; calls should be 1, but it is "+callback.getCalls(), callback.getCalls()==1);
		    
   
		}else{
			throw new Exception("No Quiesce Participant found for the blueprint service");
		}
	}else{
		throw new Exception("No Service returned for " + TestBean.class);
	}
  }
  
  
  private class TestBeanClient implements Runnable
  {
    private TestBean myService;
    private int time;
    
    public TestBeanClient(TestBean myService, int time)
    {
      this.myService = myService;
      this.time = time;
    }
	  
	public void run() 
	{
	  try
	  {
		System.out.println("In Test Bean Client - Sleeping zzzzzzz");
		myService.sleep(time);
		System.out.println("Woken up");
	  }
	  catch (InterruptedException ie)
	  {
		  ie.printStackTrace();
	  }
	}
	  
  }
}