com.spotify.apollo.httpservice.HttpServiceTest.java Source code

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Here is the source code for com.spotify.apollo.httpservice.HttpServiceTest.java

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/*
 * -\-\-
 * Spotify Apollo HTTP Service
 * --
 * Copyright (C) 2013 - 2015 Spotify AB
 * --
 * Licensed 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 com.spotify.apollo.httpservice;

import com.spotify.apollo.AppInit;
import com.spotify.apollo.Environment;
import com.spotify.apollo.RequestMetadata;
import com.spotify.apollo.Response;
import com.spotify.apollo.core.Service;
import com.spotify.apollo.http.server.HttpRequestMetadata;
import com.spotify.apollo.route.AsyncHandler;
import com.spotify.apollo.route.Route;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;

import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;

import okio.ByteString;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;

public class HttpServiceTest {

    // we need a static counter in order to be able to use the Class overload of
    // HttpService.boot
    private static final AtomicInteger counter = new AtomicInteger();

    @Rule
    public ExpectedException exception = ExpectedException.none();

    private final ExecutorService executorService = Executors.newSingleThreadExecutor();

    @Before
    public void setUp() throws Exception {
        counter.set(0);
    }

    @Test
    public void testCreateWithAppInit() throws Exception {
        final InstanceWaiter waiter = new InstanceWaiter();
        final CountDownLatch closed = new CountDownLatch(1);
        final AppInit appInit = env -> {
            counter.incrementAndGet();
            env.closer().register(closed::countDown);
        };

        new Thread(() -> {
            try {
                HttpService.boot(appInit, "test", waiter, "run", "foo");
            } catch (LoadingException e) {
                e.printStackTrace();
                fail(e.getMessage());
            }
        }).start();

        final Service.Instance instance = waiter.waitForInstance();
        instance.getSignaller().signalShutdown();
        instance.waitForShutdown();

        closed.await(5000, TimeUnit.SECONDS);
        assertEquals(1, counter.get());
    }

    @Test
    public void testBrokenServiceSimple() throws Exception {
        exception.expect(LoadingException.class);
        HttpService.boot(new BrokenService(), "test", "run", "foo");
    }

    @Test
    public void testBrokenService() throws Exception {
        final Service service = HttpService.usingAppInit(new BrokenService(), "test").build();

        exception.expect(LoadingException.class);
        HttpService.boot(service, "run", "foo");
    }

    @Test
    public void shouldPopulateRequestMetadata() throws Exception {
        AtomicReference<RequestMetadata> metadataReference = new AtomicReference<>();

        final InstanceWaiter waiter = new InstanceWaiter();

        Future<?> future = executorService.submit(() -> {
            try {
                HttpService.boot(
                        environment -> environment.routingEngine()
                                .registerRoute(Route.async("GET", "/meta", trackMeta(metadataReference))),
                        "metadatatest", waiter);
            } catch (LoadingException e) {
                throw new RuntimeException(e);
            }
        });

        final Service.Instance instance = waiter.waitForInstance();

        Request httpRequest = new Request.Builder().url("http://localhost:29432/meta").build();

        new OkHttpClient().newCall(httpRequest).execute();

        assertThat(((HttpRequestMetadata) metadataReference.get()).httpVersion(), is("HTTP/1.1"));

        instance.getSignaller().signalShutdown();
        instance.waitForShutdown();
        future.get();
    }

    private AsyncHandler<Response<ByteString>> trackMeta(AtomicReference<RequestMetadata> metadata) {
        return requestContext -> {
            System.out.println("meta: " + requestContext.metadata());
            metadata.set(requestContext.metadata());
            return CompletableFuture.completedFuture(Response.<ByteString>ok());
        };
    }

    private static class BrokenService implements AppInit {

        @Override
        public void create(Environment environment) {
            throw new RuntimeException("I'm bork");
        }
    }

    private static class InstanceWaiter implements InstanceListener {

        private final CountDownLatch latch = new CountDownLatch(1);

        private volatile Service.Instance instance;

        @Override
        public void instanceCreated(Service.Instance instance) {
            assertNull(this.instance);
            this.instance = instance;
            latch.countDown();
        }

        Service.Instance waitForInstance() throws InterruptedException {
            latch.await();
            assertNotNull(instance);
            return instance;
        }
    }
}