/*
* 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.execution;
import com.facebook.presto.spi.QueryId;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
public class TestQueryIdGenerator
{
@Test
public void testCreateNextQueryId()
throws Exception
{
TestIdGenerator idGenerator = new TestIdGenerator();
long millis = new DateTime(2001, 7, 14, 1, 2, 3, 4, DateTimeZone.UTC).getMillis();
idGenerator.setNow(millis);
// generate ids to 99,999
for (int i = 0; i < 100_000; i++) {
assertEquals(idGenerator.createNextQueryId(), new QueryId(String.format("20010714_010203_%05d_%s", i, idGenerator.getCoordinatorId())));
}
// next id will cause counter to roll, but we need to add a second to the time or code will block for ever
millis += 1000;
idGenerator.setNow(millis);
for (int i = 0; i < 100_000; i++) {
assertEquals(idGenerator.createNextQueryId(), new QueryId(String.format("20010714_010204_%05d_%s", i, idGenerator.getCoordinatorId())));
}
// more forward one more second and generate 100 ids
millis += 1000;
idGenerator.setNow(millis);
for (int i = 0; i < 100; i++) {
assertEquals(idGenerator.createNextQueryId(), new QueryId(String.format("20010714_010205_%05d_%s", i, idGenerator.getCoordinatorId())));
}
// now we move to the start of the next day, and the counter should reset
millis = new DateTime(2001, 7, 15, 0, 0, 0, 0, DateTimeZone.UTC).getMillis();
idGenerator.setNow(millis);
for (int i = 0; i < 100_000; i++) {
assertEquals(idGenerator.createNextQueryId(), new QueryId(String.format("20010715_000000_%05d_%s", i, idGenerator.getCoordinatorId())));
}
}
private static class TestIdGenerator
extends QueryIdGenerator
{
private long now;
public void setNow(long now)
{
this.now = now;
}
@Override
protected long nowInMillis()
{
return now;
}
}
}