components/camel-test-karaf/src/main/java/org/apache/camel/test/karaf/CamelKarafTestSupport.java - camel - Git at Google

 /*
  * 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.camel.test.karaf;

 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.PrintStream;
 import java.net.URL;
 import java.security.Principal;
 import java.security.PrivilegedExceptionAction;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Dictionary;
 import java.util.Enumeration;
 import java.util.HashSet;
 import java.util.Hashtable;
 import java.util.Set;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.FutureTask;
 import java.util.concurrent.TimeUnit;
 import javax.inject.Inject;
 import javax.management.remote.JMXConnector;
 import javax.management.remote.JMXConnectorFactory;
 import javax.management.remote.JMXServiceURL;
 import javax.security.auth.Subject;

 import org.apache.camel.RuntimeCamelException;
 import org.apache.camel.test.junit4.CamelTestSupport;
 import org.apache.felix.service.command.CommandProcessor;
 import org.apache.felix.service.command.CommandSession;
 import org.apache.karaf.features.Feature;
 import org.apache.karaf.features.FeaturesService;
 import org.ops4j.pax.exam.Option;
 import org.ops4j.pax.exam.ProbeBuilder;
 import org.ops4j.pax.exam.TestProbeBuilder;
 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.util.tracker.ServiceTracker;

 public class CamelKarafTestSupport extends CamelTestSupport {

     static final Long COMMAND_TIMEOUT = 30000L;
     static final Long SERVICE_TIMEOUT = 30000L;

     protected ExecutorService executor = Executors.newCachedThreadPool();

     @Inject
     protected BundleContext bundleContext;

     @Inject
     protected FeaturesService featuresService;

     @ProbeBuilder
     public TestProbeBuilder probeConfiguration(TestProbeBuilder probe) {
         probe.setHeader(Constants.DYNAMICIMPORT_PACKAGE, "*,org.apache.felix.service.*;status=provisional");
         return probe;
     }

     public File getConfigFile(String path) {
         URL res = this.getClass().getResource(path);
         if (res == null) {
             throw new RuntimeException("Config resource " + path + " not found");
         }
         return new File(res.getFile());
     }

     public static Option[] configure(String... extra) {
         return AbstractFeatureTest.configure(extra);
     }

     /**
      * Executes a shell command and returns output as a String.
      * Commands have a default timeout of 10 seconds.
      *
      * @param command The command to execute
      * @param principals The principals (e.g. RolePrincipal objects) to run the command under
      */
     protected String executeCommand(final String command, Principal... principals) {
         return executeCommand(command, COMMAND_TIMEOUT, false, principals);
     }

     /**
      * Executes a shell command and returns output as a String.
      * Commands have a default timeout of 10 seconds.
      *
      * @param command    The command to execute.
      * @param timeout    The amount of time in millis to wait for the command to execute.
      * @param silent     Specifies if the command should be displayed in the screen.
      * @param principals The principals (e.g. RolePrincipal objects) to run the command under
      */
     protected String executeCommand(final String command, final Long timeout, final Boolean silent, final Principal... principals) {

         waitForCommandService(command);
         String response;
         final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
         final PrintStream printStream = new PrintStream(byteArrayOutputStream);
         final Callable<String> commandCallable = new Callable<String>() {
             @Override
             public String call() throws Exception {
                 try {
                     if (!silent) {
                         System.err.println(command);
                     }
                     final CommandProcessor commandProcessor = getOsgiService(CommandProcessor.class);
                     final CommandSession commandSession = commandProcessor.createSession(System.in, printStream, System.err);
                     commandSession.execute(command);
                 } catch (Exception e) {
                     throw new RuntimeException(e.getMessage(), e);
                 }
                 printStream.flush();
                 return byteArrayOutputStream.toString();
             }
         };

         FutureTask<String> commandFuture;
         if (principals.length == 0) {
             commandFuture = new FutureTask<>(commandCallable);
         } else {
             // If principals are defined, run the command callable via Subject.doAs()
             commandFuture = new FutureTask<>(new Callable<String>() {
                 @Override
                 public String call() throws Exception {
                     Subject subject = new Subject();
                     subject.getPrincipals().addAll(Arrays.asList(principals));
                     return Subject.doAs(subject, new PrivilegedExceptionAction<String>() {
                         @Override
                         public String run() throws Exception {
                             return commandCallable.call();
                         }
                     });
                 }
             });
         }


         try {
             executor.submit(commandFuture);
             response = commandFuture.get(timeout, TimeUnit.MILLISECONDS);
         } catch (Exception e) {
             e.printStackTrace(System.err);
             response = "SHELL COMMAND TIMED OUT: ";
         }

         return response;
     }

     private void waitForCommandService(String command) {
         // the commands are represented by services. Due to the asynchronous nature of services they may not be
         // immediately available. This code waits the services to be available, in their secured form. It
         // means that the code waits for the command service to appear with the roles defined.

         if (command == null || command.length() == 0) {
             return;
         }

         int spaceIdx = command.indexOf(' ');
         if (spaceIdx > 0) {
             command = command.substring(0, spaceIdx);
         }
         int colonIndx = command.indexOf(':');

         try {
             if (colonIndx > 0) {
                 String scope = command.substring(0, colonIndx);
                 String function = command.substring(colonIndx + 1);
                 waitForService("(&(osgi.command.scope=" + scope + ")(osgi.command.function=" + function + "))", SERVICE_TIMEOUT);
             } else {
                 waitForService("(osgi.command.function=" + command + ")", SERVICE_TIMEOUT);
             }
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
     }

     @SuppressWarnings("unchecked")
     private void waitForService(String filter, long timeout) throws InvalidSyntaxException,
         InterruptedException {

         ServiceTracker st = new ServiceTracker(bundleContext,
                                                bundleContext.createFilter(filter),
                                                null);
         try {
             st.open();
             st.waitForService(timeout);
         } finally {
             st.close();
         }
     }

     protected <T> T getOsgiService(Class<T> type, long timeout) {
         return getOsgiService(type, null, timeout);
     }

     protected <T> T getOsgiService(Class<T> type) {
         return getOsgiService(type, null, SERVICE_TIMEOUT);
     }

     @SuppressWarnings("unchecked")
     protected <T> T getOsgiService(Class<T> type, String filter, long timeout) {
         ServiceTracker tracker = null;
         try {
             String flt;
             if (filter != null) {
                 if (filter.startsWith("(")) {
                     flt = "(&(" + Constants.OBJECTCLASS + "=" + type.getName() + ")" + filter + ")";
                 } else {
                     flt = "(&(" + Constants.OBJECTCLASS + "=" + type.getName() + ")(" + filter + "))";
                 }
             } else {
                 flt = "(" + Constants.OBJECTCLASS + "=" + type.getName() + ")";
             }
             Filter osgiFilter = FrameworkUtil.createFilter(flt);
             tracker = new ServiceTracker(bundleContext, osgiFilter, null);
             tracker.open(true);
             // Note that the tracker is not closed to keep the reference
             // This is buggy, as the service reference may change i think
             Object svc = type.cast(tracker.waitForService(timeout));
             if (svc == null) {
                 Dictionary dic = bundleContext.getBundle().getHeaders();
                 System.err.println("Test bundle headers: " + explode(dic));

                 for (ServiceReference ref : asCollection(bundleContext.getAllServiceReferences(null, null))) {
                     System.err.println("ServiceReference: " + ref);
                 }

                 for (ServiceReference ref : asCollection(bundleContext.getAllServiceReferences(null, flt))) {
                     System.err.println("Filtered ServiceReference: " + ref);
                 }

                 throw new RuntimeException("Gave up waiting for service " + flt);
             }
             return type.cast(svc);
         } catch (InvalidSyntaxException e) {
             throw new IllegalArgumentException("Invalid filter", e);
         } catch (InterruptedException e) {
             throw new RuntimeException(e);
         }
     }

     /*
     * Explode the dictionary into a ,-delimited list of key=value pairs
     */
     private static String explode(Dictionary dictionary) {
         Enumeration keys = dictionary.keys();
         StringBuilder sb = new StringBuilder();
         while (keys.hasMoreElements()) {
             Object key = keys.nextElement();
             sb.append(String.format("%s=%s", key, dictionary.get(key)));
             if (keys.hasMoreElements()) {
                 sb.append(", ");
             }
         }
         return sb.toString();
     }

     /**
      * Provides an iterable collection of references, even if the original array is null
      */
     private static Collection<ServiceReference> asCollection(ServiceReference[] references) {
         return references != null ? Arrays.asList(references) : Collections.<ServiceReference>emptyList();
     }

     public JMXConnector getJMXConnector() throws Exception {
         return getJMXConnector("karaf", "karaf");
     }

     public JMXConnector getJMXConnector(String userName, String passWord) throws Exception {
         JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:1099/karaf-root");
         Hashtable<String, Object> env = new Hashtable<>();
         String[] credentials = new String[]{userName, passWord};
         env.put("jmx.remote.credentials", credentials);
         JMXConnector connector = JMXConnectorFactory.connect(url, env);
         return connector;
     }

     public void assertFeatureInstalled(String featureName) {
         try {
             Feature[] features = featuresService.listInstalledFeatures();
             for (Feature feature : features) {
                 if (featureName.equals(feature.getName())) {
                     return;
                 }
             }
             fail("Feature " + featureName + " should be installed but is not");
         } catch (Exception e) {
             throw RuntimeCamelException.wrapRuntimeCamelException(e);
         }
     }

     public void assertFeatureInstalled(String featureName, String featureVersion) {
         try {
             Feature[] features = featuresService.listInstalledFeatures();
             for (Feature feature : features) {
                 if (featureName.equals(feature.getName()) && featureVersion.equals(feature.getVersion())) {
                     return;
                 }
             }
             fail("Feature " + featureName + "/" + featureVersion + " should be installed but is not");
         } catch (Exception e) {
             throw RuntimeCamelException.wrapRuntimeCamelException(e);
         }
     }

     protected void installAndAssertFeature(String feature) throws Exception {
         featuresService.installFeature(feature);
         assertFeatureInstalled(feature);
     }

     protected void installAndAssertFeature(String feature, String version) throws Exception {
         featuresService.installFeature(feature, version);
         assertFeatureInstalled(feature, version);
     }

     protected void installAssertAndUninstallFeature(String feature) throws Exception {
         Set<Feature> featuresBefore = new HashSet<>(Arrays.asList(featuresService.listInstalledFeatures()));
         try {
             featuresService.installFeature(feature);
             assertFeatureInstalled(feature);
         } finally {
             uninstallNewFeatures(featuresBefore);
         }
     }

     protected void installAssertAndUninstallFeature(String feature, String version) throws Exception {
         Set<Feature> featuresBefore = new HashSet<>(Arrays.asList(featuresService.listInstalledFeatures()));
         try {
             featuresService.installFeature(feature, version);
             assertFeatureInstalled(feature, version);
         } finally {
             uninstallNewFeatures(featuresBefore);
         }
     }

     protected void installAssertAndUninstallFeatures(String... feature) throws Exception {
         Set<Feature> featuresBefore = new HashSet<>(Arrays.asList(featuresService.listInstalledFeatures()));
         try {
             for (String curFeature : feature) {
                 featuresService.installFeature(curFeature);
                 assertFeatureInstalled(curFeature);
             }
         } finally {
             uninstallNewFeatures(featuresBefore);
         }
     }

     /**
      * The feature service does not uninstall feature dependencies when uninstalling a single feature.
      * So we need to make sure we uninstall all features that were newly installed.
      */
     protected void uninstallNewFeatures(Set<Feature> featuresBefore) {
         try {
             Feature[] features = featuresService.listInstalledFeatures();
             for (Feature curFeature : features) {
                 if (!featuresBefore.contains(curFeature)) {
                     try {
                         System.out.println("Uninstalling " + curFeature.getName());
                         featuresService.uninstallFeature(curFeature.getName(), curFeature.getVersion());
                     } catch (Exception e) {
                         // ignore
                     }
                 }
             }
         } catch (Exception e) {
             throw RuntimeCamelException.wrapRuntimeCamelException(e);
         }
     }

 }
	/*
	* 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.camel.test.karaf;

	import java.io.ByteArrayOutputStream;
	import java.io.File;
	import java.io.PrintStream;
	import java.net.URL;
	import java.security.Principal;
	import java.security.PrivilegedExceptionAction;
	import java.util.Arrays;
	import java.util.Collection;
	import java.util.Collections;
	import java.util.Dictionary;
	import java.util.Enumeration;
	import java.util.HashSet;
	import java.util.Hashtable;
	import java.util.Set;
	import java.util.concurrent.Callable;
	import java.util.concurrent.ExecutorService;
	import java.util.concurrent.Executors;
	import java.util.concurrent.FutureTask;
	import java.util.concurrent.TimeUnit;
	import javax.inject.Inject;
	import javax.management.remote.JMXConnector;
	import javax.management.remote.JMXConnectorFactory;
	import javax.management.remote.JMXServiceURL;
	import javax.security.auth.Subject;

	import org.apache.camel.RuntimeCamelException;
	import org.apache.camel.test.junit4.CamelTestSupport;
	import org.apache.felix.service.command.CommandProcessor;
	import org.apache.felix.service.command.CommandSession;
	import org.apache.karaf.features.Feature;
	import org.apache.karaf.features.FeaturesService;
	import org.ops4j.pax.exam.Option;
	import org.ops4j.pax.exam.ProbeBuilder;
	import org.ops4j.pax.exam.TestProbeBuilder;
	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.util.tracker.ServiceTracker;

	public class CamelKarafTestSupport extends CamelTestSupport {

	static final Long COMMAND_TIMEOUT = 30000L;
	static final Long SERVICE_TIMEOUT = 30000L;

	protected ExecutorService executor = Executors.newCachedThreadPool();

	@Inject
	protected BundleContext bundleContext;

	@Inject
	protected FeaturesService featuresService;

	@ProbeBuilder
	public TestProbeBuilder probeConfiguration(TestProbeBuilder probe) {
	probe.setHeader(Constants.DYNAMICIMPORT_PACKAGE, ",org.apache.felix.service.;status=provisional");
	return probe;
	}

	public File getConfigFile(String path) {
	URL res = this.getClass().getResource(path);
	if (res == null) {
	throw new RuntimeException("Config resource " + path + " not found");
	}
	return new File(res.getFile());
	}

	public static Option[] configure(String... extra) {
	return AbstractFeatureTest.configure(extra);
	}

	/**
	* Executes a shell command and returns output as a String.
	* Commands have a default timeout of 10 seconds.
	*
	* @param command The command to execute
	* @param principals The principals (e.g. RolePrincipal objects) to run the command under
	*/
	protected String executeCommand(final String command, Principal... principals) {
	return executeCommand(command, COMMAND_TIMEOUT, false, principals);
	}

	/**
	* Executes a shell command and returns output as a String.
	* Commands have a default timeout of 10 seconds.
	*
	* @param command The command to execute.
	* @param timeout The amount of time in millis to wait for the command to execute.
	* @param silent Specifies if the command should be displayed in the screen.
	* @param principals The principals (e.g. RolePrincipal objects) to run the command under
	*/
	protected String executeCommand(final String command, final Long timeout, final Boolean silent, final Principal... principals) {

	waitForCommandService(command);
	String response;
	final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
	final PrintStream printStream = new PrintStream(byteArrayOutputStream);
	final Callable<String> commandCallable = new Callable<String>() {
	@Override
	public String call() throws Exception {
	try {
	if (!silent) {
	System.err.println(command);
	}
	final CommandProcessor commandProcessor = getOsgiService(CommandProcessor.class);
	final CommandSession commandSession = commandProcessor.createSession(System.in, printStream, System.err);
	commandSession.execute(command);
	} catch (Exception e) {
	throw new RuntimeException(e.getMessage(), e);
	}
	printStream.flush();
	return byteArrayOutputStream.toString();
	}
	};

	FutureTask<String> commandFuture;
	if (principals.length == 0) {
	commandFuture = new FutureTask<>(commandCallable);
	} else {
	// If principals are defined, run the command callable via Subject.doAs()
	commandFuture = new FutureTask<>(new Callable<String>() {
	@Override
	public String call() throws Exception {
	Subject subject = new Subject();
	subject.getPrincipals().addAll(Arrays.asList(principals));
	return Subject.doAs(subject, new PrivilegedExceptionAction<String>() {
	@Override
	public String run() throws Exception {
	return commandCallable.call();
	}
	});
	}
	});
	}


	try {
	executor.submit(commandFuture);
	response = commandFuture.get(timeout, TimeUnit.MILLISECONDS);
	} catch (Exception e) {
	e.printStackTrace(System.err);
	response = "SHELL COMMAND TIMED OUT: ";
	}

	return response;
	}

	private void waitForCommandService(String command) {
	// the commands are represented by services. Due to the asynchronous nature of services they may not be
	// immediately available. This code waits the services to be available, in their secured form. It
	// means that the code waits for the command service to appear with the roles defined.

	if (command == null \|\| command.length() == 0) {
	return;
	}

	int spaceIdx = command.indexOf(' ');
	if (spaceIdx > 0) {
	command = command.substring(0, spaceIdx);
	}
	int colonIndx = command.indexOf(':');

	try {
	if (colonIndx > 0) {
	String scope = command.substring(0, colonIndx);
	String function = command.substring(colonIndx + 1);
	waitForService("(&(osgi.command.scope=" + scope + ")(osgi.command.function=" + function + "))", SERVICE_TIMEOUT);
	} else {
	waitForService("(osgi.command.function=" + command + ")", SERVICE_TIMEOUT);
	}
	} catch (Exception e) {
	throw new RuntimeException(e);
	}
	}

	@SuppressWarnings("unchecked")
	private void waitForService(String filter, long timeout) throws InvalidSyntaxException,
	InterruptedException {

	ServiceTracker st = new ServiceTracker(bundleContext,
	bundleContext.createFilter(filter),
	null);
	try {
	st.open();
	st.waitForService(timeout);
	} finally {
	st.close();
	}
	}

	protected <T> T getOsgiService(Class<T> type, long timeout) {
	return getOsgiService(type, null, timeout);
	}

	protected <T> T getOsgiService(Class<T> type) {
	return getOsgiService(type, null, SERVICE_TIMEOUT);
	}

	@SuppressWarnings("unchecked")
	protected <T> T getOsgiService(Class<T> type, String filter, long timeout) {
	ServiceTracker tracker = null;
	try {
	String flt;
	if (filter != null) {
	if (filter.startsWith("(")) {
	flt = "(&(" + Constants.OBJECTCLASS + "=" + type.getName() + ")" + filter + ")";
	} else {
	flt = "(&(" + Constants.OBJECTCLASS + "=" + type.getName() + ")(" + filter + "))";
	}
	} else {
	flt = "(" + Constants.OBJECTCLASS + "=" + type.getName() + ")";
	}
	Filter osgiFilter = FrameworkUtil.createFilter(flt);
	tracker = new ServiceTracker(bundleContext, osgiFilter, null);
	tracker.open(true);
	// Note that the tracker is not closed to keep the reference
	// This is buggy, as the service reference may change i think
	Object svc = type.cast(tracker.waitForService(timeout));
	if (svc == null) {
	Dictionary dic = bundleContext.getBundle().getHeaders();
	System.err.println("Test bundle headers: " + explode(dic));

	for (ServiceReference ref : asCollection(bundleContext.getAllServiceReferences(null, null))) {
	System.err.println("ServiceReference: " + ref);
	}

	for (ServiceReference ref : asCollection(bundleContext.getAllServiceReferences(null, flt))) {
	System.err.println("Filtered ServiceReference: " + ref);
	}

	throw new RuntimeException("Gave up waiting for service " + flt);
	}
	return type.cast(svc);
	} catch (InvalidSyntaxException e) {
	throw new IllegalArgumentException("Invalid filter", e);
	} catch (InterruptedException e) {
	throw new RuntimeException(e);
	}
	}

	/*
	* Explode the dictionary into a ,-delimited list of key=value pairs
	*/
	private static String explode(Dictionary dictionary) {
	Enumeration keys = dictionary.keys();
	StringBuilder sb = new StringBuilder();
	while (keys.hasMoreElements()) {
	Object key = keys.nextElement();
	sb.append(String.format("%s=%s", key, dictionary.get(key)));
	if (keys.hasMoreElements()) {
	sb.append(", ");
	}
	}
	return sb.toString();
	}

	/**
	* Provides an iterable collection of references, even if the original array is null
	*/
	private static Collection<ServiceReference> asCollection(ServiceReference[] references) {
	return references != null ? Arrays.asList(references) : Collections.<ServiceReference>emptyList();
	}

	public JMXConnector getJMXConnector() throws Exception {
	return getJMXConnector("karaf", "karaf");
	}

	public JMXConnector getJMXConnector(String userName, String passWord) throws Exception {
	JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:1099/karaf-root");
	Hashtable<String, Object> env = new Hashtable<>();
	String[] credentials = new String[]{userName, passWord};
	env.put("jmx.remote.credentials", credentials);
	JMXConnector connector = JMXConnectorFactory.connect(url, env);
	return connector;
	}

	public void assertFeatureInstalled(String featureName) {
	try {
	Feature[] features = featuresService.listInstalledFeatures();
	for (Feature feature : features) {
	if (featureName.equals(feature.getName())) {
	return;
	}
	}
	fail("Feature " + featureName + " should be installed but is not");
	} catch (Exception e) {
	throw RuntimeCamelException.wrapRuntimeCamelException(e);
	}
	}

	public void assertFeatureInstalled(String featureName, String featureVersion) {
	try {
	Feature[] features = featuresService.listInstalledFeatures();
	for (Feature feature : features) {
	if (featureName.equals(feature.getName()) && featureVersion.equals(feature.getVersion())) {
	return;
	}
	}
	fail("Feature " + featureName + "/" + featureVersion + " should be installed but is not");
	} catch (Exception e) {
	throw RuntimeCamelException.wrapRuntimeCamelException(e);
	}
	}

	protected void installAndAssertFeature(String feature) throws Exception {
	featuresService.installFeature(feature);
	assertFeatureInstalled(feature);
	}

	protected void installAndAssertFeature(String feature, String version) throws Exception {
	featuresService.installFeature(feature, version);
	assertFeatureInstalled(feature, version);
	}

	protected void installAssertAndUninstallFeature(String feature) throws Exception {
	Set<Feature> featuresBefore = new HashSet<>(Arrays.asList(featuresService.listInstalledFeatures()));
	try {
	featuresService.installFeature(feature);
	assertFeatureInstalled(feature);
	} finally {
	uninstallNewFeatures(featuresBefore);
	}
	}

	protected void installAssertAndUninstallFeature(String feature, String version) throws Exception {
	Set<Feature> featuresBefore = new HashSet<>(Arrays.asList(featuresService.listInstalledFeatures()));
	try {
	featuresService.installFeature(feature, version);
	assertFeatureInstalled(feature, version);
	} finally {
	uninstallNewFeatures(featuresBefore);
	}
	}

	protected void installAssertAndUninstallFeatures(String... feature) throws Exception {
	Set<Feature> featuresBefore = new HashSet<>(Arrays.asList(featuresService.listInstalledFeatures()));
	try {
	for (String curFeature : feature) {
	featuresService.installFeature(curFeature);
	assertFeatureInstalled(curFeature);
	}
	} finally {
	uninstallNewFeatures(featuresBefore);
	}
	}

	/**
	* The feature service does not uninstall feature dependencies when uninstalling a single feature.
	* So we need to make sure we uninstall all features that were newly installed.
	*/
	protected void uninstallNewFeatures(Set<Feature> featuresBefore) {
	try {
	Feature[] features = featuresService.listInstalledFeatures();
	for (Feature curFeature : features) {
	if (!featuresBefore.contains(curFeature)) {
	try {
	System.out.println("Uninstalling " + curFeature.getName());
	featuresService.uninstallFeature(curFeature.getName(), curFeature.getVersion());
	} catch (Exception e) {
	// ignore
	}
	}
	}
	} catch (Exception e) {
	throw RuntimeCamelException.wrapRuntimeCamelException(e);
	}
	}

	}