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/*
* Copyright (C) 2013, 2014 Brett Wooldridge
*
* 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.zaxxer.hikari.pool;
import static com.zaxxer.hikari.pool.TestElf.newHikariConfig;
import static com.zaxxer.hikari.util.ClockSource.currentTime;
import static com.zaxxer.hikari.util.ClockSource.elapsedMillis;
import static com.zaxxer.hikari.util.UtilityElf.quietlySleep;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.when;
import java.sql.Connection;
import java.sql.SQLException;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
import com.zaxxer.hikari.mocks.MockDataSource;
/**
* Test for cases when db network connectivity goes down and close is called on existing connections. By default Hikari
* blocks longer than getMaximumTimeout (it can hang for a lot of time depending on driver timeout settings). Closing
* async the connections fixes this issue.
*
*/
public class TestConnectionCloseBlocking {
private static volatile boolean shouldFail = false;
// @Test
public void testConnectionCloseBlocking() throws SQLException {
HikariConfig config = newHikariConfig();
config.setMinimumIdle(0);
config.setMaximumPoolSize(1);
config.setConnectionTimeout(1500);
config.setDataSource(new CustomMockDataSource());
long start = currentTime();
try (HikariDataSource ds = new HikariDataSource(config);
Connection connection = ds.getConnection()) {
connection.close();
// Hikari only checks for validity for connections with lastAccess > 1000 ms so we sleep for 1001 ms to force
// Hikari to do a connection validation which will fail and will trigger the connection to be closed
quietlySleep(1100L);
shouldFail = true;
// on physical connection close we sleep 2 seconds
try (Connection connection2 = ds.getConnection()) {
assertTrue("Waited longer than timeout", (elapsedMillis(start) < config.getConnectionTimeout()));
}
} catch (SQLException e) {
assertTrue("getConnection failed because close connection took longer than timeout", (elapsedMillis(start) < config.getConnectionTimeout()));
}
}
private static class CustomMockDataSource extends MockDataSource {
@Override
public Connection getConnection() throws SQLException {
Connection mockConnection = super.getConnection();
when(mockConnection.isValid(anyInt())).thenReturn(!shouldFail);
doAnswer(new Answer<Void>() {
@Override
public Void answer(InvocationOnMock invocation) throws Throwable {
if (shouldFail) {
SECONDS.sleep(2);
}
return null;
}
}).when(mockConnection).close();
return mockConnection;
}
}
}
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