johnjcasey commented on code in PR #23861:
URL: https://github.com/apache/beam/pull/23861#discussion_r1006974664
##########
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/WithTimestamps.java:
##########
@@ -68,58 +70,109 @@
* }</pre>
*/
public static <T> WithTimestamps<T> of(SerializableFunction<T, Instant> fn) {
- return new WithTimestamps<>(fn, Duration.ZERO);
+ return new WithTimestamps<>(fn, null, null);
}
///////////////////////////////////////////////////////////////////
private final SerializableFunction<T, Instant> fn;
- private final Duration allowedTimestampSkew;
+ // If allowedTimestampSkew is not null, use the deprecated behavior which
emits data as late.
+ private final @Nullable Duration allowedTimestampSkew;
+ // If watermarkDelay is not null, emit data within the watermark delay bound
as on time.
+ private final @Nullable Duration watermarkDelay;
- private WithTimestamps(SerializableFunction<T, Instant> fn, Duration
allowedTimestampSkew) {
+ private WithTimestamps(
+ SerializableFunction<T, Instant> fn,
+ @Nullable Duration allowedTimestampSkew,
+ @Nullable Duration watermarkDelay) {
+ checkArgument(
+ allowedTimestampSkew == null || watermarkDelay == null, "Both delays
cannot be non-null.");
Review Comment:
should this be a single constructor with a required null field, or should
this be separated out?
##########
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/WithWatermarkDelayFn.java:
##########
@@ -0,0 +1,105 @@
+/*
+ * 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.transforms;
+
+import java.util.Arrays;
+import java.util.Collections;
+import javax.annotation.Nullable;
+import org.apache.beam.sdk.transforms.DoFn.BoundedPerElement;
+import org.apache.beam.sdk.transforms.splittabledofn.ManualWatermarkEstimator;
+import org.apache.beam.sdk.transforms.splittabledofn.RestrictionTracker;
+import org.apache.beam.sdk.transforms.splittabledofn.SplitResult;
+import org.apache.beam.sdk.transforms.splittabledofn.WatermarkEstimators;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.joda.time.Duration;
+import org.joda.time.Instant;
+
+@BoundedPerElement
+class WithWatermarkDelayFn<T> extends DoFn<T, T> {
Review Comment:
Please add class level commentary here
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