// =================================================================================================
// Copyright 2011 Twitter, Inc.
// -------------------------------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this work except in compliance with the License.
// You may obtain a copy of the License in the LICENSE file, or 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.twitter.common.thrift;
import static org.hamcrest.CoreMatchers.allOf;
import static org.hamcrest.CoreMatchers.not;
import static org.hamcrest.CoreMatchers.sameInstance;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.net.InetSocketAddress;
import org.apache.thrift.transport.TTransport;
import org.apache.thrift.transport.TTransportException;
import org.hamcrest.Matcher;
import org.junit.Test;
import com.twitter.common.net.pool.Connection;
import com.twitter.common.net.pool.ObjectPool;
import com.twitter.common.thrift.testing.MockTSocket;
/**
* @author John Sirois
*/
public class ThriftConnectionFactoryTest {
@Test
public void testPreconditions() {
try {
new ThriftConnectionFactory(null, 1, 1);
fail("a non-null host should be required");
} catch (NullPointerException e) {
// expected
}
try {
new ThriftConnectionFactory(" ", 1, 1);
fail("a non-blank host should be required");
} catch (IllegalArgumentException e) {
// expected
}
try {
new ThriftConnectionFactory("localhost", 0, 1);
fail("a valid concrete remote port should be required");
} catch (IllegalArgumentException e) {
// expected
}
try {
new ThriftConnectionFactory("localhost", 65536, 1);
fail("a valid port should be required");
} catch (IllegalArgumentException e) {
// expected
}
try {
new ThriftConnectionFactory("localhost", 65535, 0);
fail("a non-zero value for maxConnections should be required");
} catch (IllegalArgumentException e) {
// expected
}
}
@Test
public void testMaxConnections() throws TTransportException, IOException {
ThriftConnectionFactory thriftConnectionFactory = createConnectionFactory(2);
Connection<TTransport, InetSocketAddress> connection1 =
thriftConnectionFactory.create(ObjectPool.NO_TIMEOUT);
assertOpenConnection(connection1);
Connection<TTransport, InetSocketAddress> connection2 =
thriftConnectionFactory.create(ObjectPool.NO_TIMEOUT);
assertOpenConnection(connection2);
assertThat(connection1, not(sameInstance(connection2)));
assertNull("Should've reached maximum connections",
thriftConnectionFactory.create(ObjectPool.NO_TIMEOUT));
thriftConnectionFactory.destroy(connection1);
assertClosedConnection(connection1);
Connection<TTransport, InetSocketAddress> connection3 =
thriftConnectionFactory.create(ObjectPool.NO_TIMEOUT);
assertOpenConnection(connection3);
@SuppressWarnings("unchecked") // Needed because type information lost in vargs.
Matcher<Connection<TTransport, InetSocketAddress>> matcher =
allOf(not(sameInstance(connection1)), not(sameInstance(connection2)));
assertThat(connection3, matcher);
}
@Test(expected = IllegalArgumentException.class)
public void testInactiveConnectionReturn() {
createConnectionFactory(1).destroy(new TTransportConnection(new MockTSocket(),
InetSocketAddress.createUnresolved(MockTSocket.HOST, MockTSocket.PORT)));
}
@Test(expected = IllegalArgumentException.class)
public void testNullConnectionReturn() {
createConnectionFactory(1).destroy(null);
}
private void assertOpenConnection(Connection<TTransport, InetSocketAddress> connection) {
assertNotNull(connection);
assertTrue(connection.isValid());
assertTrue(connection.get().isOpen());
}
private void assertClosedConnection(Connection<TTransport, InetSocketAddress> connection) {
assertFalse(connection.isValid());
assertFalse(connection.get().isOpen());
}
private ThriftConnectionFactory createConnectionFactory(int maxConnections) {
return new ThriftConnectionFactory("foo", 1234, maxConnections) {
@Override TTransport createTransport(int timeoutMillis) throws TTransportException {
TTransport transport = new MockTSocket();
transport.open();
return transport;
}
};
}
}