Li-Aihua commented on a change in pull request #10378: [FLINK-14919] [flink-end-to-end-perf-tests] Add performance e2e test suite for basic operations URL: https://github.com/apache/flink/pull/10378#discussion_r372172296
########## File path: flink-end-to-end-perf-tests/flink-basic-operations/src/main/java/org/apache/flink/basic/utils/FromElements.java ########## @@ -0,0 +1,183 @@ +/* + * 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.basic.utils; + +import org.apache.flink.api.common.functions.RuntimeContext; +import org.apache.flink.api.common.state.ListState; +import org.apache.flink.api.common.state.ListStateDescriptor; +import org.apache.flink.api.common.typeinfo.TypeInformation; +import org.apache.flink.api.common.typeutils.TypeSerializer; +import org.apache.flink.api.common.typeutils.base.LongSerializer; +import org.apache.flink.api.java.typeutils.TypeExtractor; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.core.memory.DataInputView; +import org.apache.flink.core.memory.DataInputViewStreamWrapper; +import org.apache.flink.core.memory.DataOutputViewStreamWrapper; +import org.apache.flink.metrics.Counter; +import org.apache.flink.metrics.Meter; +import org.apache.flink.metrics.MeterView; +import org.apache.flink.metrics.MetricGroup; +import org.apache.flink.metrics.SimpleCounter; +import org.apache.flink.runtime.state.FunctionInitializationContext; +import org.apache.flink.runtime.state.FunctionSnapshotContext; +import org.apache.flink.streaming.api.checkpoint.CheckpointedFunction; +import org.apache.flink.streaming.api.datastream.DataStreamSource; +import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; +import org.apache.flink.streaming.api.functions.source.ParallelSourceFunction; +import org.apache.flink.streaming.api.functions.source.RichSourceFunction; +import org.apache.flink.streaming.api.functions.source.SourceFunction; +import org.apache.flink.util.Preconditions; + +import org.apache.flink.shaded.guava18.com.google.common.collect.Iterables; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.util.Arrays; +import java.util.Collection; + +/** + * Provides the default data sets used for the WordCount example program. + */ +public class FromElements { + + @SafeVarargs + public static <OUT> DataStreamSource<OUT> fromElements(StreamExecutionEnvironment env, Long maxCount, int sleepNum, OUT... data) { + if (data.length == 0) { + throw new IllegalArgumentException("fromElements needs at least one element as argument"); + } + TypeInformation<OUT> typeInfo; + try { + typeInfo = TypeExtractor.getForObject(data[0]); + } catch (Exception e) { + throw new RuntimeException("Could not create TypeInformation for type " + data[0].getClass().getName() + "; please specify the TypeInformation manually via StreamExecutionEnvironment#fromElements(Collection, TypeInformation)"); + } + Collection<OUT> dataCollection = Arrays.asList(data); + try { + SourceFunction<OUT> function = + new FromElementsRichFunction<>(typeInfo.createSerializer(env.getConfig()), + maxCount, sleepNum, dataCollection); + return env.addSource(function, "WordsData", typeInfo); + } catch (IOException e) { + throw new RuntimeException(e.getMessage(), e); + } + } + + /** + * A stream source function that returns a sequence of elements. + * + * <p> + * Upon construction, this source function serializes the elements using Flink's type information. That way, any + * object transport using Java serialization will not be affected by the serializability of the elements. + * </p> + * <p> + * <b>NOTE:</b> This source has a parallelism of 1. + * </p> + * + * @param <T> The type of elements returned by this function. + */ + public static class FromElementsRichFunction<T> extends RichSourceFunction<T> + implements ParallelSourceFunction<T>, CheckpointedFunction { + private static final long serialVersionUID = 1L; + private final TypeSerializer<T> serializer; + private final byte[] elementsSerialized; + private volatile long numElements; Review comment: thanks, I updated it. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
