org.apache.nutch.protocol.webdriver.driver.NutchDriverService.java Source code

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Here is the source code for org.apache.nutch.protocol.webdriver.driver.NutchDriverService.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.nutch.protocol.webdriver.driver;

import java.io.File;
import java.io.IOException;
import java.util.concurrent.locks.ReentrantLock;

import org.openqa.selenium.WebDriverException;
import org.openqa.selenium.net.PortProber;
import org.openqa.selenium.remote.service.DriverService;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;

import static java.util.concurrent.TimeUnit.SECONDS;

/**
 * A driverService check the GeckoDriver process that used in this session is
 * already running. Manages the session life cycle by super class of
 * {@link DriverService}
 * 
 * @author Kiyonari Harigae
 *
 */
public class NutchDriverService extends DriverService {

    public static final String GECKO_DRIVER_EXE_PROPERTY = "webdriver.gecko.driver";

    private final ReentrantLock lock = new ReentrantLock();
    private boolean isRunning;

    @Override
    public boolean isRunning() {
        lock.lock();
        try {
            return isRunning;
        } finally {
            lock.unlock();
        }
    }

    @Override
    public void start() throws IOException {
        lock.lock();
        try {
            // TODO: Check port up
            PortProber.waitForPortUp(getUrl().getPort(), 20, SECONDS);
            isRunning = true;
        } finally {
            lock.unlock();
        }
    }

    @Override
    public void stop() {
        lock.lock();
        try {
            isRunning = false;
        } finally {
            lock.unlock();
        }
    }

    protected NutchDriverService(File executable, int port, ImmutableList<String> args,
            ImmutableMap<String, String> environment) throws IOException {
        super(executable, port, args, environment);
    }

    public static DriverService createDriverService(int port) {
        try {
            return new NutchDriverService(findDefaultExecutable(), port, null, null);
        } catch (IOException e) {
            throw new WebDriverException(e);
        }
    }

    private static File findDefaultExecutable() {
        return findExecutable("geckodriver", GECKO_DRIVER_EXE_PROPERTY, "https://github.com/mozilla/geckodriver",
                "https://github.com/mozilla/geckodriver/releases");
    }
}