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From fhueske <...@git.apache.org>
Subject [GitHub] flink pull request #2100: [FLINK-4024] FileSourceFunction not adjusted to ne...
Date Tue, 14 Jun 2016 16:20:23 GMT
Github user fhueske commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2100#discussion_r67003727
  
    --- Diff: flink-streaming-java/src/test/java/org/apache/flink/streaming/api/functions/source/FileSourceFunctionTest.java
---
    @@ -0,0 +1,258 @@
    +/*
    + * 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.functions.source;
    +
    +import org.apache.flink.api.common.ExecutionConfig;
    +import org.apache.flink.api.common.accumulators.Accumulator;
    +import org.apache.flink.api.common.io.RichInputFormat;
    +import org.apache.flink.api.common.io.statistics.BaseStatistics;
    +import org.apache.flink.api.common.typeinfo.TypeInformation;
    +import org.apache.flink.configuration.Configuration;
    +import org.apache.flink.core.io.InputSplit;
    +import org.apache.flink.core.io.InputSplitAssigner;
    +import org.apache.flink.runtime.jobgraph.tasks.InputSplitProvider;
    +import org.apache.flink.runtime.memory.MemoryManager;
    +import org.apache.flink.runtime.operators.testutils.MockEnvironment;
    +import org.apache.flink.streaming.api.operators.AbstractStreamOperator;
    +import org.apache.flink.streaming.api.operators.StreamingRuntimeContext;
    +import org.apache.flink.streaming.api.watermark.Watermark;
    +import org.junit.Assert;
    +import org.junit.Test;
    +
    +import java.io.IOException;
    +import java.util.Collections;
    +
    +public class FileSourceFunctionTest {
    +
    +	@Test
    +	public void testNormalOp() throws Exception {
    +		testForEmptyLocation(false);
    +	}
    +
    +	@Test
    +	public void testCancelation() throws Exception {
    +		testForEmptyLocation(true);
    +	}
    +
    +	private void testForEmptyLocation(final boolean midCancel) throws Exception {
    +
    +		final int noOfSplits = 5;
    +		final int cancelAt = 2;
    +
    +		final LifeCycleTestInputFormat format = new LifeCycleTestInputFormat();
    +		final FileSourceFunction<Integer> reader = new FileSourceFunction<>(format,
TypeInformation.of(Integer.class));
    +		reader.setRuntimeContext(new MockRuntimeContext(format, noOfSplits));
    +
    +		Assert.assertTrue(!format.isConfigured);
    +		Assert.assertTrue(!format.isInputFormatOpen);
    +		Assert.assertTrue(!format.isSplitOpen);
    +
    +		reader.open(new Configuration());
    +		Assert.assertTrue(format.isConfigured);
    +
    +		TestSourceContext ctx = new TestSourceContext(reader, format, midCancel, cancelAt);
    +		reader.run(ctx);
    +
    +		int splitsSeen = ctx.getSplitsSeen();
    +		Assert.assertTrue(midCancel ? splitsSeen == cancelAt : splitsSeen == noOfSplits);
    +
    +		// we have exhausted the splits so the
    +		// format and splits should be closed by now
    +
    +		Assert.assertTrue(!format.isSplitOpen);
    +		Assert.assertTrue(!format.isInputFormatOpen);
    +	}
    +
    +
    +	private static class LifeCycleTestInputFormat extends RichInputFormat<Integer,InputSplit>
{
    +
    +		private boolean isConfigured = false;
    +		private boolean isInputFormatOpen = false;
    +		private boolean isSplitOpen = false;
    +
    +		// end of split
    +		private boolean eos = false;
    +
    +		private int splitCounter = 0;
    +
    +		@Override
    +		public void openInputFormat() {
    +			this.isInputFormatOpen = true;
    +		}
    +
    +		@Override
    +		public void closeInputFormat() {
    +			this.isInputFormatOpen = false;
    +		}
    +
    +		@Override
    +		public void configure(Configuration parameters) {
    +			this.isConfigured = true;
    +		}
    +
    +		@Override
    +		public BaseStatistics getStatistics(BaseStatistics cachedStatistics) throws IOException
{
    +			return null;
    +		}
    +
    +		@Override
    +		public InputSplit[] createInputSplits(int minNumSplits) throws IOException {
    +			InputSplit[] splits = new InputSplit[minNumSplits];
    +
    +			for (int i = 0; i < minNumSplits; i++) {
    +				final int idx = i;
    +				splits[idx] = new InputSplit() {
    +					@Override
    +					public int getSplitNumber() {
    +						return idx;
    +					}
    +				};
    +			}
    +			return splits;
    +		}
    +
    +		@Override
    +		public InputSplitAssigner getInputSplitAssigner(InputSplit[] inputSplits) {
    +			return null;
    +		}
    +
    +		@Override
    +		public void open(InputSplit split) throws IOException {
    +			// whenever a new split opens,
    +			// the previous should have been closed
    +			Assert.assertTrue(!isSplitOpen);
    +
    +			isSplitOpen = true;
    +			eos = false;
    +		}
    +
    +		@Override
    +		public boolean reachedEnd() throws IOException {
    +			return eos;
    +		}
    +
    +		@Override
    +		public Integer nextRecord(Integer reuse) throws IOException {
    +			eos = true;
    +			return splitCounter++;
    +		}
    +
    +		@Override
    +		public void close() throws IOException {
    +			this.isSplitOpen = false;
    --- End diff --
    
    Assert that split was opened before?


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