[GitHub] [flink] pnowojski commented on a change in pull request #9564: [FLINK-12481][FLINK-12482][FLINK-12958] Streaming runtime: integrate mailbox for timer triggers, checkpoints and AsyncWaitOperator

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pnowojski commented on a change in pull request #9564: [FLINK-12481][FLINK-12482][FLINK-12958] Streaming runtime: integrate mailbox for timer triggers, checkpoints and AsyncWaitOperator
URL: https://github.com/apache/flink/pull/9564#discussion_r319828976
 
 

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 File path: flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/async/AsyncWaitOperatorFactory.java
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+/*
+ * 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.flink.streaming.api.operators.async;
+
+import org.apache.flink.streaming.api.datastream.AsyncDataStream;
+import org.apache.flink.streaming.api.functions.async.AsyncFunction;
+import org.apache.flink.streaming.api.graph.StreamConfig;
+import org.apache.flink.streaming.api.operators.ChainingStrategy;
+import org.apache.flink.streaming.api.operators.OneInputStreamOperatorFactory;
+import org.apache.flink.streaming.api.operators.Output;
+import org.apache.flink.streaming.api.operators.StreamOperator;
+import org.apache.flink.streaming.api.operators.YieldingOperatorFactory;
+import org.apache.flink.streaming.runtime.tasks.StreamTask;
+import org.apache.flink.streaming.runtime.tasks.mailbox.execution.MailboxExecutor;
+
+/**
+ * The factory of {@link AsyncWaitOperator}.
+ *
+ * @param <OUT> The output type of the operator
+ */
+public class AsyncWaitOperatorFactory<IN, OUT> implements OneInputStreamOperatorFactory<IN, OUT>, YieldingOperatorFactory<OUT> {
+	private final AsyncFunction<IN, OUT> asyncFunction;
+	private final long timeout;
+	private final int capacity;
+	private final AsyncDataStream.OutputMode outputMode;
+	private MailboxExecutor mailboxExecutor;
+	private ChainingStrategy strategy = ChainingStrategy.HEAD;
+
+	public AsyncWaitOperatorFactory(
+			AsyncFunction<IN, OUT> asyncFunction,
+			long timeout,
+			int capacity,
+			AsyncDataStream.OutputMode outputMode) {
+		this.asyncFunction = asyncFunction;
+		this.timeout = timeout;
+		this.capacity = capacity;
+		this.outputMode = outputMode;
+	}
+
+	@Override public void setMailboxExecutor(MailboxExecutor mailboxExecutor) {
+		this.mailboxExecutor = mailboxExecutor;
+	}
+
+	@Override public StreamOperator createStreamOperator(StreamTask containingTask, StreamConfig config,
+			Output output) {
+		AsyncWaitOperator asyncWaitOperator = new AsyncWaitOperator(
+				asyncFunction,
+				timeout,
+				capacity,
+				outputMode,
+				mailboxExecutor);
+		asyncWaitOperator.setup(containingTask, config, output);
 
 Review comment:
   Yes, I meant AsyncWaitOperator :) I copied/pated wrong class name.
   
   > I can create a follow up ticket for that 
   
   Please do so and can you CC me in the ticket? 

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