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FlowControlEventStatsTest.java
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FlowControlEventStatsTest.java
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/*
* Copyright 2021 Google LLC
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.google.api.gax.batching;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;
import com.google.api.gax.batching.FlowControlEventStats.FlowControlEvent;
import com.google.api.gax.batching.FlowController.MaxOutstandingRequestBytesReachedException;
import java.util.concurrent.TimeUnit;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
@RunWith(JUnit4.class)
public class FlowControlEventStatsTest {
@Test
public void testCreateEvent() {
long timestamp = 12345, throttledTimeMs = 5000;
FlowControlEvent event = FlowControlEvent.createReserveDelayed(timestamp, throttledTimeMs);
assertEquals(event.getTimestampMs(), event.getTimestampMs());
assertEquals(throttledTimeMs / 1000, event.getThrottledTime(TimeUnit.SECONDS).longValue());
assertNull(event.getException());
MaxOutstandingRequestBytesReachedException exception =
new MaxOutstandingRequestBytesReachedException(100);
event = FlowControlEvent.createReserveDenied(timestamp, exception);
assertEquals(timestamp, event.getTimestampMs());
assertNotNull(event.getException());
assertEquals(exception, event.getException());
assertNull(event.getThrottledTime(TimeUnit.MILLISECONDS));
try {
event = FlowControlEvent.createReserveDenied(null);
fail("FlowControlEvent did not throw exception");
} catch (NullPointerException e) {
// expected, ignore
}
}
@Test
public void testGetLastEvent() {
FlowControlEventStats stats = new FlowControlEventStats();
long currentTime = System.currentTimeMillis();
for (int i = 1; i <= 10; i++) {
int timeElapsed = i;
stats.recordFlowControlEvent(
FlowControlEvent.createReserveDelayed(currentTime + timeElapsed, timeElapsed));
}
assertEquals(currentTime + 10, stats.getLastFlowControlEvent().getTimestampMs());
assertEquals(
10, stats.getLastFlowControlEvent().getThrottledTime(TimeUnit.MILLISECONDS).longValue());
}
}