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ServerStateTest.java
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ServerStateTest.java
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/*
* Copyright (c) 2002-2018 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.causalclustering.net;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioSocketChannel;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.neo4j.causalclustering.helper.EnableableLifeCycleStateChangeTest;
import org.neo4j.causalclustering.helper.EnableableLifeCylcleEnableableStateChangeTest;
import org.neo4j.helpers.ListenSocketAddress;
import org.neo4j.logging.FormattedLogProvider;
import org.neo4j.logging.Level;
import org.neo4j.ports.allocation.PortAuthority;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
/**
* More generalized state tests of EnableableLifeCycle can be found {@link EnableableLifeCycleStateChangeTest} and
* {@link EnableableLifeCylcleEnableableStateChangeTest}
*/
public class ServerStateTest
{
private Server server;
private final EventLoopGroup clientGroup = new NioEventLoopGroup();
@Before
public void setUp() throws InterruptedException
{
server = createServer();
server.init();
assertFalse( canConnect( server.address(), clientGroup ) );
}
@After
public void tearDown()
{
server.stop();
server.shutdown();
}
@Test
public void shouldStartServerNormally() throws InterruptedException
{
server.start();
assertTrue( canConnect( server.address(), clientGroup ) );
}
@Test
public void canDisableAndEnableServer() throws InterruptedException
{
server.start();
assertTrue( canConnect( server.address(), clientGroup ) );
server.disable();
assertFalse( canConnect( server.address(), clientGroup ) );
server.enable();
assertTrue( canConnect( server.address(), clientGroup ) );
}
@Test
public void serverCannotBeEnabledIfLifeCycleHasNotStarted() throws InterruptedException
{
server.enable();
assertFalse( canConnect( server.address(), clientGroup ) );
server.start();
assertTrue( canConnect( server.address(), clientGroup ) );
}
@Test
public void serverCannotStartIfDisabled() throws InterruptedException
{
server.disable();
server.start();
assertFalse( canConnect( server.address(), clientGroup ) );
server.enable();
assertTrue( canConnect( server.address(), clientGroup ) );
}
private static Server createServer()
{
return new Server( channel ->
{
}, FormattedLogProvider.withDefaultLogLevel( Level.DEBUG ).toOutputStream( System.out ),
FormattedLogProvider.withDefaultLogLevel( Level.DEBUG ).toOutputStream( System.out ),
new ListenSocketAddress( "localhost", PortAuthority.allocatePort() ), "serverName" );
}
private static boolean canConnect( ListenSocketAddress socketAddress, EventLoopGroup eventExecutors ) throws InterruptedException
{
return new Bootstrap().group( eventExecutors ).channel( NioSocketChannel.class ).handler( new ChannelInitializer<NioSocketChannel>()
{
@Override
protected void initChannel( NioSocketChannel ch )
{
}
} ).connect( socketAddress.getHostname(), socketAddress.getPort() ).await().isSuccess();
}
}