org.apache.nutch.protocol.webdriver.HttpWebClient.java Source code

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Here is the source code for org.apache.nutch.protocol.webdriver.HttpWebClient.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;

import org.apache.hadoop.conf.Configuration;
import org.apache.nutch.protocol.webdriver.driver.NutchDriverService;
import org.apache.nutch.protocol.webdriver.driver.NutchFirefoxDriver;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxProfile;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.service.DriverService;
import org.openqa.selenium.support.ui.WebDriverWait;

/**
 * This class is used for extract content from given url using WebDriver. It
 * allows configure the marionette service port to request webdriver commands
 * via {@link org.openqa.selenium.remote.HttpCommandExecutor}
 * 
 * @author Kiyonari Harigae
 *
 */
public class HttpWebClient {

    public static String getHtmlPage(String url, Configuration conf) {
        WebDriver driver = null;

        try {
            FirefoxProfile profile = new FirefoxProfile();
            String proxyHost = conf.get("http.proxy.host");
            int proxyPort = conf.getInt("http.proxy.port", 8080);
            if (proxyHost != null && proxyHost.length() > 0) {
                profile.setPreference("network.proxy.type", 1);
                profile.setPreference("network.proxy.http", proxyHost);
                profile.setPreference("network.proxy.http_port", proxyPort);
            }

            DesiredCapabilities capabilities = DesiredCapabilities.firefox();
            capabilities.setCapability("marionette", true);
            capabilities.setCapability("firefox_profile", profile);

            int driverServicePort = conf.getInt("webdriver.service.port", 4444);
            DriverService ds = NutchDriverService.createDriverService(driverServicePort);
            driver = new NutchFirefoxDriver(ds, capabilities);

            driver.get(url);
            // Wait for the page to load, timeout after 3 seconds
            new WebDriverWait(driver, 3);

            // Extract body
            String innerHtml = driver.findElement(By.tagName("body")).getAttribute("innerHTML");
            return innerHtml;
            // I'm sure this catch statement is a code smell ; borrowing it from
            // lib-htmlunit
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            if (driver != null)
                try {
                    driver.quit();
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
        }
    };

    public static String getHtmlPage(String url) {
        return getHtmlPage(url, null);
    }
}