/*
* Copyright 2012 Netflix, 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.netflix.exhibitor.core.state;
import com.netflix.exhibitor.core.Exhibitor;
import com.netflix.exhibitor.core.config.ConfigManager;
import com.netflix.exhibitor.core.config.InstanceConfig;
import com.netflix.exhibitor.core.config.IntConfigs;
import com.netflix.exhibitor.core.config.StringConfigs;
import com.netflix.exhibitor.core.controlpanel.ControlPanelTypes;
import com.netflix.exhibitor.core.controlpanel.ControlPanelValues;
import org.mockito.Mockito;
import org.testng.Assert;
import org.testng.annotations.Test;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.prefs.Preferences;
public class TestMonitorRunningInstance
{
@Test
public void testTempDownInstance() throws Exception
{
final AtomicInteger checkMs = new AtomicInteger(10000);
InstanceConfig config = new InstanceConfig()
{
@Override
public String getString(StringConfigs config)
{
switch ( config )
{
case SERVERS_SPEC:
{
return "1:foo,2:bar";
}
case ZOOKEEPER_DATA_DIRECTORY:
case ZOOKEEPER_INSTALL_DIRECTORY:
{
return "/";
}
}
return null;
}
@Override
public int getInt(IntConfigs config)
{
switch ( config )
{
case CHECK_MS:
{
return checkMs.get();
}
}
return 0;
}
};
Preferences preferences = Mockito.mock(Preferences.class);
ControlPanelValues controlPanelValues = new ControlPanelValues(preferences)
{
@Override
public boolean isSet(ControlPanelTypes type) throws Exception
{
return true;
}
};
ConfigManager configManager = Mockito.mock(ConfigManager.class);
Mockito.when(configManager.getConfig()).thenReturn(config);
Exhibitor mockExhibitor = Mockito.mock(Exhibitor.class, Mockito.RETURNS_MOCKS);
Mockito.when(mockExhibitor.getConfigManager()).thenReturn(configManager);
Mockito.when(mockExhibitor.getThisJVMHostname()).thenReturn("foo");
Mockito.when(mockExhibitor.getControlPanelValues()).thenReturn(controlPanelValues);
final Semaphore semaphore = new Semaphore(0);
MonitorRunningInstance monitor = new MonitorRunningInstance(mockExhibitor)
{
@Override
protected void restartZooKeeper(InstanceState currentInstanceState) throws Exception
{
semaphore.release();
}
};
monitor.doWork();
Assert.assertTrue(semaphore.tryAcquire(10, TimeUnit.SECONDS));
monitor.doWork();
Assert.assertFalse(semaphore.tryAcquire(3, TimeUnit.SECONDS)); // no instance state change, should not try restart
checkMs.set(1);
monitor.doWork(); // should do restart now as 10 times checkMs has elapsed
Assert.assertTrue(semaphore.tryAcquire(10, TimeUnit.SECONDS));
}
}