com.yahoo.jdisc.test.TestDriver Maven / Gradle / Ivy
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.test;
import com.google.inject.AbstractModule;
import com.google.inject.Module;
import com.google.inject.binder.AnnotatedBindingBuilder;
import com.yahoo.jdisc.Container;
import com.yahoo.jdisc.Request;
import com.yahoo.jdisc.Response;
import com.yahoo.jdisc.application.Application;
import com.yahoo.jdisc.application.ContainerActivator;
import com.yahoo.jdisc.application.ContainerBuilder;
import com.yahoo.jdisc.application.DeactivatedContainer;
import com.yahoo.jdisc.application.OsgiFramework;
import com.yahoo.jdisc.core.ApplicationLoader;
import com.yahoo.jdisc.core.BootstrapLoader;
import com.yahoo.jdisc.core.FelixFramework;
import com.yahoo.jdisc.core.FelixParams;
import com.yahoo.jdisc.handler.BindingNotFoundException;
import com.yahoo.jdisc.handler.CompletionHandler;
import com.yahoo.jdisc.handler.ContentChannel;
import com.yahoo.jdisc.handler.RequestDeniedException;
import com.yahoo.jdisc.handler.RequestDispatch;
import com.yahoo.jdisc.handler.RequestHandler;
import com.yahoo.jdisc.handler.ResponseHandler;
import com.yahoo.jdisc.service.CurrentContainer;
import java.net.URI;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.Future;
import java.util.concurrent.FutureTask;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicInteger;
/**
* This class provides a unified way to set up and run unit tests on jDISC components. In short, it is a programmable
* {@link BootstrapLoader} that provides convenient access to the {@link ContainerActivator} and {@link
* CurrentContainer} interfaces. A typical test case using this class looks as follows:
*
*{@literal @}Test
* public void requireThatMyComponentIsWellBehaved() {
* TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
* ContainerBuilder builder = driver.newContainerBuilder();
* (... configure builder ...)
* driver.activateContainer(builder);
* (... run tests ...)
* assertTrue(driver.close());
* }
*
* One of the most important things to remember when using this class is to always call {@link #close()} at the end
* of your test case. This ensures that the tested configuration does not prevent graceful shutdown. If close() returns
* FALSE, it means that either your components or the test case itself does not conform to the reference counting
* requirements of {@link Request}, {@link RequestHandler}, {@link ContentChannel}, or {@link CompletionHandler}.
*
* @author Simon Thoresen Hult
*/
public class TestDriver implements ContainerActivator, CurrentContainer {
private static final AtomicInteger testId = new AtomicInteger(0);
private final FutureTask closeTask = new FutureTask<>(new CloseTask());
private final ApplicationLoader loader;
private TestDriver(ApplicationLoader loader) {
this.loader = loader;
}
@Override
public ContainerBuilder newContainerBuilder() {
return loader.newContainerBuilder();
}
@Override
public DeactivatedContainer activateContainer(ContainerBuilder builder) {
return loader.activateContainer(builder);
}
@Override
public Container newReference(URI uri) {
return loader.newReference(uri);
}
/**
* Returns the {@link BootstrapLoader} used by this TestDriver. Use caution when invoking methods on the
* BootstrapLoader directly, since the lifecycle management done by this TestDriver may become corrupt.
*
* @return The BootstrapLoader.
*/
public BootstrapLoader bootstrapLoader() {
return loader;
}
/**
* Returns the {@link Application} loaded by this TestDriver. Until {@link #close()} is called, this method will
* never return null.
*
* @return The loaded Application.
*/
public Application application() {
return loader.application();
}
/**
* Returns the {@link OsgiFramework} created by this TestDriver. Although this method will never return null, it
* might return a {@link NonWorkingOsgiFramework} depending on the factory method used to instantiate it.
*
* @return The OSGi framework.
*/
public OsgiFramework osgiFramework() {
return loader.osgiFramework();
}
/**
* Convenience method to create and {@link Request#connect(ResponseHandler)} a {@link Request} on the {@link
* CurrentContainer}. This method will either return the corresponding {@link ContentChannel} or throw the
* appropriate exception (see {@link Request#connect(ResponseHandler)}).
*
* @param requestUri The URI string to parse and pass to the Request constructor.
* @param responseHandler The ResponseHandler to pass to {@link Request#connect(ResponseHandler)}.
* @return The ContentChannel returned by {@link Request#connect(ResponseHandler)}.
* @throws NullPointerException If the URI string or the {@link ResponseHandler} is null.
* @throws IllegalArgumentException If the URI string violates RFC 2396.
* @throws BindingNotFoundException If the corresponding call to {@link Container#resolveHandler(Request)}
* returns null.
* @throws RequestDeniedException If the corresponding call to {@link RequestHandler#handleRequest(Request,
* ResponseHandler)} returns null.
*/
public ContentChannel connectRequest(String requestUri, ResponseHandler responseHandler) {
return newRequestDispatch(requestUri, responseHandler).connect();
}
/**
* Convenience method to create a {@link Request}, connect it to a {@link RequestHandler}, and close the returned
* {@link ContentChannel}. This is the same as calling:
*
* connectRequest(uri, responseHandler).close(null);
*
*
* @param requestUri The URI string to parse and pass to the Request constructor.
* @param responseHandler The ResponseHandler to pass to {@link Request#connect(ResponseHandler)}.
* @return A waitable Future that provides access to the corresponding {@link Response}.
* @throws NullPointerException If the URI string or the {@link ResponseHandler} is null.
* @throws IllegalArgumentException If the URI string violates RFC 2396.
* @throws BindingNotFoundException If the corresponding call to {@link Container#resolveHandler(Request)}
* returns null.
* @throws RequestDeniedException If the corresponding call to {@link RequestHandler#handleRequest(Request,
* ResponseHandler)} returns null.
*/
public Future dispatchRequest(String requestUri, ResponseHandler responseHandler) {
return newRequestDispatch(requestUri, responseHandler).dispatch();
}
/**
* Initiates the shut down of this TestDriver in another thread. By doing this in a separate thread, it allows
* other code to monitor its progress. Unless you need the added monitoring capability, you should use {@link
* #close()} instead.
*
* @see #awaitClose(long, TimeUnit)
*/
public void scheduleClose() {
new Thread(closeTask, "TestDriver.Closer").start();
}
/**
* Waits for shut down of this TestDriver to complete. This call must be preceded by a call to {@link
* #scheduleClose()}.
*
* @param timeout The maximum time to wait.
* @param unit The time unit of the timeout argument.
* @return True if shut down completed within the allocated time.
*/
public boolean awaitClose(long timeout, TimeUnit unit) {
try {
closeTask.get(timeout, unit);
return true;
} catch (TimeoutException e) {
return false;
} catch (Exception e) {
throw e instanceof RuntimeException ? (RuntimeException)e : new RuntimeException(e);
}
}
/**
* Initiatiates shut down of this TestDriver and waits for it to complete. If shut down fails to complete within
* 60 seconds, this method throws an exception.
*
* @return True if shut down completed within the allocated time.
* @throws IllegalStateException If shut down failed to complete within the allocated time.
*/
public boolean close() {
scheduleClose();
if ( ! awaitClose(600, TimeUnit.SECONDS)) {
throw new IllegalStateException("Application failed to terminate within allocated time.");
}
return true;
}
/**
* Creates a new {@link RequestDispatch} that dispatches a {@link Request} with the given URI and {@link
* ResponseHandler}.
*
* @param requestUri The uri of the Request to create.
* @param responseHandler The ResponseHandler to use for the dispather.
* @return The created RequestDispatch.
*/
public RequestDispatch newRequestDispatch(final String requestUri, final ResponseHandler responseHandler) {
return new RequestDispatch() {
@Override
protected Request newRequest() {
return new Request(loader, URI.create(requestUri));
}
@Override
public ContentChannel handleResponse(Response response) {
return responseHandler.handleResponse(response);
}
};
}
/**
* Creates a new TestDriver with an injected {@link Application}.
*
* @param appClass The Application class to inject.
* @param guiceModules The Guice {@link Module Modules} to install prior to startup.
* @return The created TestDriver.
*/
public static TestDriver newInjectedApplicationInstance(Class appClass,
Module... guiceModules) {
return newInstance(newOsgiFramework(), null, false,
newModuleList(null, appClass, guiceModules));
}
/**
* Creates a new TestDriver with an injected {@link Application}, but without OSGi support.
*
* @param appClass The Application class to inject.
* @param guiceModules The Guice {@link Module Modules} to install prior to startup.
* @return The created TestDriver.
* @see #newInjectedApplicationInstance(Class, Module...)
* @see #newNonWorkingOsgiFramework()
*/
public static TestDriver newInjectedApplicationInstanceWithoutOsgi(Class appClass,
Module... guiceModules) {
return newInstance(newNonWorkingOsgiFramework(), null, false,
newModuleList(null, appClass, guiceModules));
}
/**
* Creates a new TestDriver with an injected {@link Application}.
*
* @param app The Application to inject.
* @param guiceModules The Guice {@link Module Modules} to install prior to startup.
* @return The created TestDriver.
*/
public static TestDriver newInjectedApplicationInstance(Application app, Module... guiceModules) {
return newInstance(newOsgiFramework(), null, false, newModuleList(app, null, guiceModules));
}
/**
* Creates a new TestDriver with an injected {@link Application}, but without OSGi support.
*
* @param app The Application to inject.
* @param guiceModules The Guice {@link Module Modules} to install prior to startup.
* @return The created TestDriver.
* @see #newInjectedApplicationInstance(Application, Module...)
* @see #newNonWorkingOsgiFramework()
*/
public static TestDriver newInjectedApplicationInstanceWithoutOsgi(Application app, Module... guiceModules) {
return newInstance(newNonWorkingOsgiFramework(), null, false, newModuleList(app, null, guiceModules));
}
/**
* Creates a new TestDriver with a predefined {@link Application} implementation. The injected Application class
* implements nothing but the bare minimum to conform to the Application interface.
*
* @param guiceModules The Guice {@link Module Modules} to install prior to startup.
* @return The created TestDriver.
*/
public static TestDriver newSimpleApplicationInstance(Module... guiceModules) {
return newInstance(newOsgiFramework(), null, false,
newModuleList(null, SimpleApplication.class, guiceModules));
}
/**
* Creates a new TestDriver with a predefined {@link Application} implementation, but without OSGi support. The
* injected Application class implements nothing but the bare minimum to conform to the Application interface.
*
* @param guiceModules The Guice {@link Module Modules} to install prior to startup.
* @return The created TestDriver.
* @see #newSimpleApplicationInstance(Module...)
* @see #newNonWorkingOsgiFramework()
*/
public static TestDriver newSimpleApplicationInstanceWithoutOsgi(Module... guiceModules) {
return newInstance(newNonWorkingOsgiFramework(), null, false,
newModuleList(null, SimpleApplication.class, guiceModules));
}
/**
* Creates a new TestDriver from an application bundle. This runs the same code path as the actual jDISC startup
* code. Note that the named bundle must have a "X-JDisc-Application" bundle instruction, or setup will fail.
*
* @param bundleLocation The location of the application bundle to load.
* @param privileged Whether or not privileges should be marked as available to the application bundle.
* @param guiceModules The Guice {@link Module Modules} to install prior to startup.
* @return The created TestDriver.
*/
public static TestDriver newApplicationBundleInstance(String bundleLocation, boolean privileged,
Module... guiceModules) {
return newInstance(newOsgiFramework(), bundleLocation, privileged, Arrays.asList(guiceModules));
}
/**
* Creates a new TestDriver with the given parameters. This is the factory method that all other factory methods
* call. It allows you to specify all parts of the TestDriver manually.
*
* @param osgiFramework The {@link OsgiFramework} to assign to the created TestDriver.
* @param bundleLocation The location of the application bundle to load, may be null.
* @param privileged Whether or not privileges should be marked as available to the application bundle.
* @param guiceModules The Guice {@link Module Modules} to install prior to startup.
* @return The created TestDriver.
*/
public static TestDriver newInstance(OsgiFramework osgiFramework, String bundleLocation, boolean privileged,
Module... guiceModules) {
return newInstance(osgiFramework, bundleLocation, privileged, Arrays.asList(guiceModules));
}
/**
* Factory method to create a working {@link OsgiFramework}. This method is used by all {@link TestDriver}
* factories that DO NOT have the "WithoutOsgi" suffix.
*
* @return A working OsgiFramework.
*/
public static FelixFramework newOsgiFramework() {
return new FelixFramework(new FelixParams().setCachePath("target/bundlecache" + testId.getAndIncrement()));
}
/**
* Factory method to create a light-weight {@link OsgiFramework} that throws {@link
* UnsupportedOperationException} if {@link OsgiFramework#installBundle(String)} or {@link
* OsgiFramework#startBundles(List, boolean)} is called. This allows for unit testing without the footprint of OSGi
* support. This method is used by {@link TestDriver} factories that have the "WithoutOsgi" suffix.
*
* @return A non-working OsgiFramework.
*/
public static OsgiFramework newNonWorkingOsgiFramework() {
return new NonWorkingOsgiFramework();
}
private class CloseTask implements Callable {
@Override
public Boolean call() throws Exception {
loader.stop();
loader.destroy();
return true;
}
}
private static TestDriver newInstance(OsgiFramework osgiFramework, String bundleLocation, boolean privileged,
Iterable guiceModules) {
ApplicationLoader loader = new ApplicationLoader(osgiFramework, guiceModules);
try {
loader.init(bundleLocation, privileged);
} catch (Exception e) {
throw e instanceof RuntimeException ? (RuntimeException)e : new RuntimeException(e);
}
try {
loader.start();
} catch (Exception e) {
loader.destroy();
throw e instanceof RuntimeException ? (RuntimeException)e : new RuntimeException(e);
}
return new TestDriver(loader);
}
private static List newModuleList(final Application app, final Class appClass,
Module... guiceModules) {
List lst = new LinkedList<>();
lst.addAll(Arrays.asList(guiceModules));
lst.add(new AbstractModule() {
@Override
public void configure() {
AnnotatedBindingBuilder builder = bind(Application.class);
if (app != null) {
builder.toInstance(app);
} else {
builder.to(appClass);
}
}
});
return lst;
}
private static class SimpleApplication implements Application {
@Override
public void start() {
}
@Override
public void stop() {
}
@Override
public void destroy() {
}
}
}