com.github.mmatczuk.ablb.benchmark.OkHttpAsync.java Source code

Introduction

Here is the source code for com.github.mmatczuk.ablb.benchmark.OkHttpAsync.java

Source

/*
 * Copyright (C) 2014 Square, Inc.
 *
 * 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.github.mmatczuk.ablb.benchmark;

import java.io.IOException;
import java.io.InputStream;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

import com.squareup.okhttp.Callback;
import com.squareup.okhttp.Dispatcher;
import com.squareup.okhttp.HttpUrl;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;
import com.squareup.okhttp.ResponseBody;

class OkHttpAsync implements HttpClient {
    private static final boolean VERBOSE = false;
    private final AtomicInteger requestsInFlight = new AtomicInteger();

    private OkHttpClient client;
    private Callback callback;
    private int concurrencyLevel;
    private int targetBacklog;

    private static long readAllAndClose(InputStream in) throws IOException {
        byte[] buffer = new byte[1024];
        long total = 0;
        for (int count; (count = in.read(buffer)) != -1;) {
            total += count;
        }
        in.close();
        return total;
    }

    @Override
    public void prepare(final Benchmark benchmark) {
        concurrencyLevel = benchmark.concurrencyLevel;
        targetBacklog = benchmark.targetBacklog;

        client = new OkHttpClient();
        client.setDispatcher(new Dispatcher(new ThreadPoolExecutor(benchmark.concurrencyLevel,
                benchmark.concurrencyLevel, 60, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>())));

        callback = new Callback() {
            @Override
            public void onFailure(Request request, IOException e) {
                System.out.println("Failed: " + e);
            }

            @Override
            public void onResponse(Response response) throws IOException {
                ResponseBody body = response.body();
                long total = readAllAndClose(body.byteStream());
                long finish = System.nanoTime();
                if (VERBOSE) {
                    long start = (Long) response.request().tag();
                    System.out.printf("Transferred % 8d bytes in %4d ms%n", total,
                            TimeUnit.NANOSECONDS.toMillis(finish - start));
                }
                requestsInFlight.decrementAndGet();
            }
        };
    }

    @Override
    public void enqueue(HttpUrl url) throws Exception {
        requestsInFlight.incrementAndGet();
        client.newCall(new Request.Builder().tag(System.nanoTime()).url(url).build()).enqueue(callback);
    }

    @Override
    public synchronized boolean acceptingJobs() {
        return requestsInFlight.get() < (concurrencyLevel + targetBacklog);
    }
}