| /* |
| * 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.kinesis; |
| |
| import static org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkArgument; |
| |
| import com.google.auto.value.AutoValue; |
| import java.io.Serializable; |
| import org.apache.beam.sdk.transforms.SerializableFunction; |
| import org.apache.beam.sdk.transforms.windowing.BoundedWindow; |
| import org.joda.time.Duration; |
| import org.joda.time.Instant; |
| |
| /** {@code WatermarkParameters} contains the parameters used for watermark computation. */ |
| @AutoValue |
| public abstract class WatermarkParameters implements Serializable { |
| |
| private static final SerializableFunction<KinesisRecord, Instant> ARRIVAL_TIME_FN = |
| KinesisRecord::getApproximateArrivalTimestamp; |
| private static final Duration STANDARD_WATERMARK_IDLE_DURATION_THRESHOLD = |
| Duration.standardMinutes(2); |
| |
| abstract Instant getCurrentWatermark(); |
| |
| abstract Instant getEventTime(); |
| |
| abstract Instant getLastUpdateTime(); |
| |
| abstract SerializableFunction<KinesisRecord, Instant> getTimestampFn(); |
| |
| abstract Duration getWatermarkIdleDurationThreshold(); |
| |
| public abstract Builder toBuilder(); |
| |
| public static Builder builder() { |
| return new AutoValue_WatermarkParameters.Builder() |
| .setCurrentWatermark(BoundedWindow.TIMESTAMP_MIN_VALUE) |
| .setEventTime(BoundedWindow.TIMESTAMP_MIN_VALUE) |
| .setTimestampFn(ARRIVAL_TIME_FN) |
| .setLastUpdateTime(Instant.now()) |
| .setWatermarkIdleDurationThreshold(STANDARD_WATERMARK_IDLE_DURATION_THRESHOLD); |
| } |
| |
| @AutoValue.Builder |
| abstract static class Builder { |
| abstract Builder setCurrentWatermark(Instant currentWatermark); |
| |
| abstract Builder setEventTime(Instant eventTime); |
| |
| abstract Builder setLastUpdateTime(Instant now); |
| |
| abstract Builder setWatermarkIdleDurationThreshold(Duration watermarkIdleDurationThreshold); |
| |
| abstract Builder setTimestampFn(SerializableFunction<KinesisRecord, Instant> timestampFn); |
| |
| abstract WatermarkParameters build(); |
| } |
| |
| public static WatermarkParameters create() { |
| return builder().build(); |
| } |
| |
| /** |
| * Specify the {@code SerializableFunction} to extract the event time from a {@code |
| * KinesisRecord}. The default event timestamp is the arrival timestamp of the record. |
| * |
| * @param timestampFn Serializable function to extract the timestamp from a record. |
| */ |
| public WatermarkParameters withTimestampFn( |
| SerializableFunction<KinesisRecord, Instant> timestampFn) { |
| checkArgument(timestampFn != null, "timestampFn function is null"); |
| return builder().setTimestampFn(timestampFn).build(); |
| } |
| |
| /** |
| * Specify the watermark idle duration to consider before advancing the watermark. The default |
| * watermark idle duration threshold is 2 minutes. |
| */ |
| public WatermarkParameters withWatermarkIdleDurationThreshold(Duration idleDurationThreshold) { |
| checkArgument(idleDurationThreshold != null, "watermark idle duration threshold is null"); |
| return builder().setWatermarkIdleDurationThreshold(idleDurationThreshold).build(); |
| } |
| } |