org.sonar.plugins.buildstability.ci.jenkins.JenkinsUtils.java Source code

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Here is the source code for org.sonar.plugins.buildstability.ci.jenkins.JenkinsUtils.java

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/*
 * Sonar Build Stability Plugin
 * Copyright (C) 2010 SonarSource
 * dev@sonar.codehaus.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.plugins.buildstability.ci.jenkins;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * @author Evgeny Mandrikov
 */
public final class JenkinsUtils {
    /**
     * Hide utility-class constructor.
     */
    private JenkinsUtils() {
    }

    public static void doLogin(HttpClient client, String hostName, String username, String password)
            throws IOException {
        String hudsonLoginEntryUrl = hostName + "/login";
        HttpGet loginLink = new HttpGet(hudsonLoginEntryUrl);
        HttpResponse response = client.execute(loginLink);
        checkResult(response.getStatusLine().getStatusCode(), hudsonLoginEntryUrl);
        EntityUtils.consume(response.getEntity());

        String location = hostName + "/j_acegi_security_check";
        boolean loggedIn = false;
        while (!loggedIn) {
            HttpPost loginMethod = new HttpPost(location);
            List<NameValuePair> nvps = new ArrayList<NameValuePair>();
            nvps.add(new BasicNameValuePair("j_username", username));
            nvps.add(new BasicNameValuePair("j_password", password));
            nvps.add(new BasicNameValuePair("action", "login"));
            loginMethod.setEntity(new UrlEncodedFormEntity(nvps));
            try {
                HttpResponse response2 = client.execute(loginMethod);
                if (response2.getStatusLine().getStatusCode() / 100 == 3) {
                    // Commons HTTP client refuses to handle redirects for POST
                    // so we have to do it manually.
                    location = response2.getFirstHeader("Location").getValue();
                } else {
                    checkResult(response2.getStatusLine().getStatusCode(), location);
                    loggedIn = true;
                }
                EntityUtils.consume(response2.getEntity());
            } finally {
                loginMethod.releaseConnection();
            }
        }
    }

    private static void checkResult(int httpStatusCode, String hudsonLoginEntryUrl) throws IOException {
        if (httpStatusCode != 200) {
            throw new IllegalStateException("Unable to access the Hudson page : " + hudsonLoginEntryUrl
                    + ". HTTP status code: " + httpStatusCode);
        }
    }
}