| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.beam.sdk.io.kafka; |
| |
| import static org.hamcrest.core.Is.is; |
| import static org.junit.Assert.assertThat; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| import java.util.List; |
| import java.util.Optional; |
| import java.util.stream.Collectors; |
| import org.apache.beam.sdk.transforms.windowing.BoundedWindow; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableList; |
| import org.apache.kafka.common.header.internals.RecordHeaders; |
| import org.joda.time.Duration; |
| import org.joda.time.Instant; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link CustomTimestampPolicyWithLimitedDelay}. */ |
| @RunWith(JUnit4.class) |
| public class CustomTimestampPolicyWithLimitedDelayTest { |
| |
| // Takes offsets of timestamps from now returns the results as offsets from 'now'. |
| private static List<Long> getTimestampsForRecords( |
| TimestampPolicy<String, String> policy, Instant now, List<Long> timestampOffsets) { |
| |
| return timestampOffsets.stream() |
| .map( |
| ts -> { |
| Instant result = |
| policy.getTimestampForRecord( |
| null, |
| new KafkaRecord<>( |
| "topic", |
| 0, |
| 0, |
| now.getMillis() + ts, |
| KafkaTimestampType.CREATE_TIME, |
| new RecordHeaders(), |
| "key", |
| "value")); |
| return result.getMillis() - now.getMillis(); |
| }) |
| .collect(Collectors.toList()); |
| } |
| |
| @Test |
| public void testCustomTimestampPolicyWithLimitedDelay() { |
| // Verifies that max delay is applies appropriately for reporting watermark |
| |
| Duration maxDelay = Duration.standardSeconds(60); |
| |
| CustomTimestampPolicyWithLimitedDelay<String, String> policy = |
| new CustomTimestampPolicyWithLimitedDelay<>( |
| (record -> new Instant(record.getTimestamp())), maxDelay, Optional.empty()); |
| |
| Instant now = Instant.now(); |
| |
| TimestampPolicy.PartitionContext ctx = mock(TimestampPolicy.PartitionContext.class); |
| when(ctx.getMessageBacklog()).thenReturn(100L); |
| when(ctx.getBacklogCheckTime()).thenReturn(now); |
| |
| assertThat(policy.getWatermark(ctx), is(BoundedWindow.TIMESTAMP_MIN_VALUE)); |
| |
| // (1) Test simple case : watermark == max_timesatmp - max_delay |
| |
| List<Long> input = |
| ImmutableList.of( |
| -200_000L, -150_000L, -120_000L, -140_000L, -100_000L, // <<< Max timestamp |
| -110_000L); |
| assertThat(getTimestampsForRecords(policy, now, input), is(input)); |
| |
| // Watermark should be max_timestamp - maxDelay |
| assertThat( |
| policy.getWatermark(ctx), is(now.minus(Duration.standardSeconds(100)).minus(maxDelay))); |
| |
| // (2) Verify future timestamps |
| |
| input = |
| ImmutableList.of( |
| -200_000L, -150_000L, -120_000L, -140_000L, 100_000L, // <<< timestamp is in future |
| -100_000L, -110_000L); |
| |
| assertThat(getTimestampsForRecords(policy, now, input), is(input)); |
| |
| // Watermark should be now - max_delay (backlog in context still non zero) |
| assertThat(policy.getWatermark(ctx, now), is(now.minus(maxDelay))); |
| |
| // (3) Verify that Watermark advances when there is no backlog |
| |
| // advance current time by 5 minutes |
| now = now.plus(Duration.standardMinutes(5)); |
| Instant backlogCheckTime = now.minus(Duration.standardSeconds(10)); |
| |
| when(ctx.getMessageBacklog()).thenReturn(0L); |
| when(ctx.getBacklogCheckTime()).thenReturn(backlogCheckTime); |
| |
| assertThat(policy.getWatermark(ctx, now), is(backlogCheckTime.minus(maxDelay))); |
| } |
| } |