/*
* 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.facebook.presto.raptor.metadata;
import com.facebook.presto.spi.ErrorCodeSupplier;
import com.facebook.presto.spi.PrestoException;
import com.google.common.collect.ImmutableSet;
import io.airlift.testing.TestingTicker;
import io.airlift.units.Duration;
import org.testng.annotations.Test;
import static com.facebook.presto.raptor.RaptorErrorCode.RAPTOR_REASSIGNMENT_DELAY;
import static com.facebook.presto.raptor.RaptorErrorCode.RAPTOR_REASSIGNMENT_THROTTLE;
import static java.util.concurrent.TimeUnit.MINUTES;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.fail;
public class TestAssignmentLimiter
{
@Test
public void testLimiter()
{
TestingTicker ticker = new TestingTicker();
AssignmentLimiter limiter = new AssignmentLimiter(
ImmutableSet::of,
ticker,
new Duration(5, MINUTES),
new Duration(10, MINUTES));
// 4:00
assertCheckFails(limiter, "A", RAPTOR_REASSIGNMENT_DELAY);
// 4:01
ticker.increment(1, MINUTES);
assertCheckFails(limiter, "A", RAPTOR_REASSIGNMENT_DELAY);
assertCheckFails(limiter, "B", RAPTOR_REASSIGNMENT_DELAY);
// 4:05
ticker.increment(4, MINUTES);
limiter.checkAssignFrom("A");
assertCheckFails(limiter, "B", RAPTOR_REASSIGNMENT_DELAY);
// 4:06
ticker.increment(1, MINUTES);
assertCheckFails(limiter, "B", RAPTOR_REASSIGNMENT_THROTTLE);
assertCheckFails(limiter, "C", RAPTOR_REASSIGNMENT_DELAY);
// 4:14
ticker.increment(8, MINUTES);
assertCheckFails(limiter, "B", RAPTOR_REASSIGNMENT_THROTTLE);
assertCheckFails(limiter, "C", RAPTOR_REASSIGNMENT_THROTTLE);
// 4:15
ticker.increment(1, MINUTES);
limiter.checkAssignFrom("B");
assertCheckFails(limiter, "C", RAPTOR_REASSIGNMENT_THROTTLE);
// 4:24
ticker.increment(9, MINUTES);
assertCheckFails(limiter, "C", RAPTOR_REASSIGNMENT_THROTTLE);
// 4:25
ticker.increment(1, MINUTES);
limiter.checkAssignFrom("A");
// 4:30
ticker.increment(5, MINUTES);
limiter.checkAssignFrom("A");
limiter.checkAssignFrom("B");
limiter.checkAssignFrom("C");
}
private static void assertCheckFails(AssignmentLimiter limiter, String node, ErrorCodeSupplier expected)
{
try {
limiter.checkAssignFrom(node);
fail("expected exception");
}
catch (PrestoException e) {
assertEquals(e.getErrorCode(), expected.toErrorCode());
}
}
}