package com.squareup.rack.examples.guice;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Module;
import com.google.inject.Provides;
import com.google.inject.Singleton;
import com.google.inject.servlet.GuiceFilter;
import com.google.inject.servlet.GuiceServletContextListener;
import com.google.inject.servlet.ServletModule;
import com.squareup.rack.jruby.JRubyRackApplication;
import com.squareup.rack.servlet.RackServlet;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.EnumSet;
import javax.servlet.DispatcherType;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.eclipse.jetty.server.Connector;
import org.eclipse.jetty.server.NetworkConnector;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.DefaultServlet;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.jruby.embed.ScriptingContainer;
import org.jruby.runtime.builtin.IRubyObject;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.fest.assertions.api.Assertions.assertThat;
import static org.slf4j.impl.SimpleLogger.DEFAULT_LOG_LEVEL_KEY;
public class ExampleServerTest {
private HttpClient client;
private HttpHost localhost;
private ExampleServer server;
@Before public void setUp() throws Exception {
// Silence logging.
System.setProperty(DEFAULT_LOG_LEVEL_KEY, "WARN");
server = new ExampleServer(new RackModule());
server.start();
client = new DefaultHttpClient();
localhost = new HttpHost("localhost", server.getPort());
}
@After public void tearDown() throws Exception {
server.stop();
}
@Test public void get() throws IOException {
HttpResponse response = get("/anything");
assertThat(response.getStatusLine().getStatusCode()).isEqualTo(200);
assertThat(response.getEntity().getContent()).hasContentEqualTo(streamOf("Hello, World!"));
}
private HttpResponse get(String path) throws IOException {
return client.execute(localhost, new HttpGet(path));
}
private InputStream streamOf(String contents) {
return new ByteArrayInputStream(contents.getBytes());
}
private static class ExampleServer {
private final Server server;
public ExampleServer(Module... modules) {
ServletContextHandler handler = new ServletContextHandler();
handler.setContextPath("/");
handler.addEventListener(new GuiceInjectorServletContextListener(modules));
handler.addFilter(GuiceFilter.class, "/*", EnumSet.allOf(DispatcherType.class));
handler.addServlet(DefaultServlet.class, "/");
server = new Server(0);
server.setHandler(handler);
}
public void start() throws Exception {
server.start();
}
public int getPort() {
Connector[] connectors = server.getConnectors();
NetworkConnector connector = (NetworkConnector) connectors[0];
return connector.getLocalPort();
}
public void stop() throws Exception {
server.stop();
}
}
private static class GuiceInjectorServletContextListener extends GuiceServletContextListener {
private final Injector injector;
public GuiceInjectorServletContextListener(Module... modules) {
injector = Guice.createInjector(modules);
}
@Override protected Injector getInjector() {
return injector;
}
}
private static class RackModule extends ServletModule {
@Override protected void configureServlets() {
serve("/*").with(RackServlet.class);
}
@Provides @Singleton RackServlet provideRackServlet(IRubyObject application) {
return new RackServlet(new JRubyRackApplication(application));
}
@Provides IRubyObject provideApplication() {
ScriptingContainer ruby = new ScriptingContainer();
return ruby.parse("lambda { |env| [200, {}, ['Hello, World!']] }").run();
}
}
}