package netflix.karyon.transport.http;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.TypeLiteral;
import com.netflix.governator.guice.LifecycleInjector;
import com.netflix.governator.lifecycle.LifecycleManager;
import io.netty.buffer.ByteBuf;
import io.netty.handler.codec.http.HttpMethod;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.reactivex.netty.RxNetty;
import io.reactivex.netty.protocol.http.client.HttpClientResponse;
import io.reactivex.netty.protocol.http.server.HttpServerRequest;
import io.reactivex.netty.protocol.http.server.HttpServerResponse;
import io.reactivex.netty.protocol.http.server.RequestHandler;
import io.reactivex.netty.server.RxServer;
import netflix.karyon.transport.interceptor.DuplexInterceptor;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import rx.Observable;
import rx.functions.Func1;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import static org.junit.Assert.assertEquals;
/**
* @author Tomasz Bak
*/
public class KaryonHttpModuleTest {
private static final Key<Map<String, RxServer>> RX_SERVERS_KEY = Key.get(new TypeLiteral<Map<String, RxServer>>() {
});
private Injector injector;
private LifecycleManager lifecycleManager;
private RxServer server;
@Before
public void setUp() throws Exception {
injector = LifecycleInjector.bootstrap(TestableHttpModule.class);
lifecycleManager = injector.getInstance(LifecycleManager.class);
lifecycleManager.start();
server = injector.getInstance(RX_SERVERS_KEY).values().iterator().next();
}
@After
public void tearDown() throws Exception {
if (lifecycleManager != null) {
lifecycleManager.close();
}
}
@Test
public void testHttpRouterAndInterceptorSupport() throws Exception {
int counterInitial = CountingInterceptor.counter.get();
HttpResponseStatus status = sendRequest("/sendOK", server);
assertEquals("Expected HTTP 200", HttpResponseStatus.OK, status);
status = sendRequest("/sendNotFound", server);
assertEquals("Expected HTTP NOT_FOUND", HttpResponseStatus.NOT_FOUND, status);
int counterFinal = CountingInterceptor.counter.get();
assertEquals("Invalid number of counting interceptor invocations", 4, counterFinal - counterInitial);
}
private HttpResponseStatus sendRequest(String path, RxServer server) throws Exception {
return (HttpResponseStatus) RxNetty.createHttpGet("http://localhost:" + server.getServerPort() + path)
.flatMap(new Func1<HttpClientResponse<ByteBuf>, Observable<?>>() {
@Override
public Observable<HttpResponseStatus> call(HttpClientResponse<ByteBuf> httpClientResponse) {
return Observable.just(httpClientResponse.getStatus());
}
}).single().toBlocking().toFuture().get(1, TimeUnit.SECONDS);
}
public static class TestableRequestRouter implements RequestHandler<ByteBuf, ByteBuf> {
@Override
public Observable<Void> handle(HttpServerRequest<ByteBuf> request, HttpServerResponse<ByteBuf> response) {
if (request.getPath().contains("/sendOK")) {
response.setStatus(HttpResponseStatus.OK);
} else if (request.getPath().contains("/sendNotFound")) {
response.setStatus(HttpResponseStatus.NOT_FOUND);
} else {
response.setStatus(HttpResponseStatus.INTERNAL_SERVER_ERROR);
}
return Observable.empty();
}
}
public static class TestableHttpModule extends KaryonHttpModule<ByteBuf, ByteBuf> {
public TestableHttpModule() {
super("testableHttpModule", ByteBuf.class, ByteBuf.class);
}
@Override
protected void configureServer() {
bindRouter().to(TestableRequestRouter.class);
interceptorSupport().forHttpMethod(HttpMethod.GET).intercept(CountingInterceptor.class);
server().port(0);
}
}
public static class CountingInterceptor implements DuplexInterceptor<HttpServerRequest<ByteBuf>, HttpServerResponse<ByteBuf>> {
static AtomicInteger counter = new AtomicInteger();
@Override
public Observable<Void> in(HttpServerRequest<ByteBuf> request, HttpServerResponse<ByteBuf> response) {
counter.incrementAndGet();
return Observable.empty();
}
@Override
public Observable<Void> out(HttpServerResponse<ByteBuf> response) {
counter.incrementAndGet();
return Observable.empty();
}
}
}