view launcher/src/test/java/com/redhat/thermostat/launcher/internal/DbServiceTest.java @ 636:9e4437930235

Add DB connection service This should improve usability of the Thermostat shell. In particular in a remote setup. The current situation is that if a shell is fired up it does not make a connection to storage. So if a user has storage set up to bind to a "public" IP, 192.1.1.129 say, then mongo requires username/password for connections. This results in bad usability of the shell: ./bin/thermostat shell Thermostat > ping Could not connect to db mongodb://192.168.1.14:27518 (creds are missing or incorrect host IP in user prefs) Thermostat > ping --username blah --password blah -d mongodb://example.org (works) Thermostat > list-vms --username blah --password blah -d ... (i.e. a user needs to pass credential info for every command on the shell). This patch introduces a "connect" and "disconnect" command which establishes a DB connection on demand and registers a DbService. The above shell session becomes: ./bin/thermostat shell Thermostat > ping Could not connect to db mongodb://192.168.1.14:27518 Thermostat > connect -d mongodb://192.168.1.14:27518 -u blah -p blah Thermostat > ping agent-id (works) Thermostat > list-vms (works) Thermostat > disconnect (disconnects from mongo storage at 192.168.1.14:27518) Thermostat > ping Could not connect to db mongodb://192.168.1.14:27518 Details of the patch: ----------------------------------------------------------------- 1. It removes AppContextSetup/AppContextSetupImpl 2. Modifies LauncherImpl in order to use the new DbService (i.e. other use cases remain the same) 3. OSGIUtils now returns the ServiceRegistration for registered services. 4. Added a method which allows services to be null to OSGIUtils. Existing getService() throws a NPE if the service reference is null (bundleContext.getServiceReference(clazz)). 5. Adds ConnectCommand ("connect" on shell) 6. Adds DisconnectCommand ("disconnect" on shell) 7. Tests Reviewed-by: omajid Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2012-September/003341.html PR1164
author Severin Gehwolf <sgehwolf@redhat.com>
date Fri, 21 Sep 2012 18:17:41 +0200
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/*
 * Copyright 2012 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2, or (at your
 * option) any later version.
 *
 * Thermostat 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.launcher.internal;

import static org.junit.Assert.fail;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.redhat.thermostat.launcher.DbService;

public class DbServiceTest {
    
    private DbService dbService;
    
    @Before
    public void setup() {
        String dbUrl = "mongodb://testhost.example.com:19223";
        dbService = new DbServiceImpl("tester", "testerpassword", dbUrl);
    }
    
    @After
    public void teardown() {
        dbService = null;
    }
    
    @Test
    public void testSetRegistrationRegistryThrowsException() {
        try {
            dbService.setServiceRegistration(null);
            fail("Null registrations not allowed");
        } catch (Exception e) {
            // pass
        }
    }

}