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package com.zaxxer.hikari.pool;
import com.zaxxer.hikari.HikariDataSource;
import com.zaxxer.hikari.metrics.IMetricsTracker;
import com.zaxxer.hikari.mocks.StubDataSource;
import org.junit.Test;
import java.sql.Connection;
import java.sql.SQLTransientConnectionException;
import java.util.concurrent.TimeUnit;
import static com.zaxxer.hikari.pool.TestElf.newHikariDataSource;
import static junit.framework.TestCase.fail;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
/**
* @author wvuong@chariotsolutions.com on 2/16/17.
*/
public class MetricsTrackerTest
{
@Test(expected = SQLTransientConnectionException.class)
public void connectionTimeoutIsRecorded() throws Exception
{
int timeoutMillis = 1000;
int timeToCreateNewConnectionMillis = timeoutMillis * 2;
StubDataSource stubDataSource = new StubDataSource();
stubDataSource.setConnectionAcquistionTime(timeToCreateNewConnectionMillis);
StubMetricsTracker metricsTracker = new StubMetricsTracker();
try (HikariDataSource ds = newHikariDataSource()) {
ds.setMinimumIdle(0);
ds.setMaximumPoolSize(1);
ds.setConnectionTimeout(timeoutMillis);
ds.setDataSource(stubDataSource);
ds.setMetricsTrackerFactory((poolName, poolStats) -> metricsTracker);
try (Connection c = ds.getConnection()) {
fail("Connection shouldn't have been successfully created due to configured connection timeout");
} finally {
// assert that connection timeout was measured
assertThat(metricsTracker.connectionTimeoutRecorded, is(true));
// assert that measured time to acquire connection should be roughly equal or greater than the configured connection timeout time
assertTrue(metricsTracker.connectionAcquiredNanos >= TimeUnit.NANOSECONDS.convert(timeoutMillis, TimeUnit.MILLISECONDS));
}
}
}
private static class StubMetricsTracker implements IMetricsTracker
{
private Long connectionCreatedMillis;
private Long connectionAcquiredNanos;
private Long connectionBorrowedMillis;
private boolean connectionTimeoutRecorded;
@Override
public void recordConnectionCreatedMillis(long connectionCreatedMillis)
{
this.connectionCreatedMillis = connectionCreatedMillis;
}
@Override
public void recordConnectionAcquiredNanos(long elapsedAcquiredNanos)
{
this.connectionAcquiredNanos = elapsedAcquiredNanos;
}
@Override
public void recordConnectionUsageMillis(long elapsedBorrowedMillis)
{
this.connectionBorrowedMillis = elapsedBorrowedMillis;
}
@Override
public void recordConnectionTimeout()
{
this.connectionTimeoutRecorded = true;
}
}
}
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