| /* |
| * 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.runners.flink.translation.wrappers.streaming; |
| |
| import javax.annotation.Nullable; |
| import org.apache.beam.sdk.util.WindowedValue; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.base.Function; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.FluentIterable; |
| import org.apache.flink.streaming.runtime.streamrecord.StreamRecord; |
| |
| class StreamRecordStripper { |
| |
| @SuppressWarnings("Guava") |
| static <T> Iterable<WindowedValue<T>> stripStreamRecordFromWindowedValue(Iterable<Object> input) { |
| return FluentIterable.from(input) |
| .filter( |
| o -> |
| o instanceof StreamRecord && ((StreamRecord) o).getValue() instanceof WindowedValue) |
| .transform( |
| new Function<Object, WindowedValue<T>>() { |
| @Nullable |
| @Override |
| @SuppressWarnings({"unchecked", "rawtypes"}) |
| public WindowedValue<T> apply(@Nullable Object o) { |
| if (o instanceof StreamRecord |
| && ((StreamRecord) o).getValue() instanceof WindowedValue) { |
| return (WindowedValue) ((StreamRecord) o).getValue(); |
| } |
| throw new RuntimeException("unreachable"); |
| } |
| }); |
| } |
| } |