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[FLINK-1819][core] allow access to RuntimeContext from Input and Outp…
…utFormats 1. Allow access to Runtime Context from I/O formats. 2. Make all existing I/O formats context aware. This closes apache#966.
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50 changes: 50 additions & 0 deletions
50
flink-core/src/main/java/org/apache/flink/api/common/io/RichInputFormat.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| /* | ||
| c * 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. | ||
| */ | ||
|
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| package org.apache.flink.api.common.io; | ||
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| import org.apache.flink.api.common.functions.RuntimeContext; | ||
| import org.apache.flink.core.io.InputSplit; | ||
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| /** | ||
| * An abstract stub implementation for Rich input formats. | ||
| * Rich formats have access to their runtime execution context via {@link #getRuntimeContext()}. | ||
| */ | ||
| public abstract class RichInputFormat<OT, T extends InputSplit> implements InputFormat<OT, T> { | ||
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| private static final long serialVersionUID = 1L; | ||
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| // -------------------------------------------------------------------------------------------- | ||
| // Runtime context access | ||
| // -------------------------------------------------------------------------------------------- | ||
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| private transient RuntimeContext runtimeContext; | ||
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| public void setRuntimeContext(RuntimeContext t) { | ||
| this.runtimeContext = t; | ||
| } | ||
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| public RuntimeContext getRuntimeContext() { | ||
| if (this.runtimeContext != null) { | ||
| return this.runtimeContext; | ||
| } else { | ||
| throw new IllegalStateException("The runtime context has not been initialized yet. Try accessing " + | ||
| "it in one of the other life cycle methods."); | ||
| } | ||
| } | ||
| } |
49 changes: 49 additions & 0 deletions
49
flink-core/src/main/java/org/apache/flink/api/common/io/RichOutputFormat.java
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| @@ -0,0 +1,49 @@ | ||
| /* | ||
| c * 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. | ||
| */ | ||
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| package org.apache.flink.api.common.io; | ||
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| import org.apache.flink.api.common.functions.RuntimeContext; | ||
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| /** | ||
| * An abstract stub implementation for Rich output formats. | ||
| * Rich formats have access to their runtime execution context via {@link #getRuntimeContext()}. | ||
| */ | ||
| public abstract class RichOutputFormat<IT> implements OutputFormat<IT> { | ||
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| private static final long serialVersionUID = 1L; | ||
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| // -------------------------------------------------------------------------------------------- | ||
| // Runtime context access | ||
| // -------------------------------------------------------------------------------------------- | ||
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| private transient RuntimeContext runtimeContext; | ||
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| public void setRuntimeContext(RuntimeContext t) { | ||
| this.runtimeContext = t; | ||
| } | ||
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| public RuntimeContext getRuntimeContext() { | ||
| if (this.runtimeContext != null) { | ||
| return this.runtimeContext; | ||
| } else { | ||
| throw new IllegalStateException("The runtime context has not been initialized yet. Try accessing " + | ||
| "it in one of the other life cycle methods."); | ||
| } | ||
| } | ||
| } |
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45 changes: 45 additions & 0 deletions
45
flink-core/src/test/java/org/apache/flink/api/common/io/RichInputFormatTest.java
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| @@ -0,0 +1,45 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.flink.api.common.io; | ||
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| import java.util.HashMap; | ||
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| import org.apache.flink.api.common.ExecutionConfig; | ||
| import org.apache.flink.api.common.accumulators.Accumulator; | ||
| import org.apache.flink.api.common.functions.util.RuntimeUDFContext; | ||
| import org.apache.flink.types.Value; | ||
| import org.junit.Assert; | ||
| import org.junit.Test; | ||
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| /** | ||
| * Tests runtime context access from inside an RichInputFormat class | ||
| */ | ||
| public class RichInputFormatTest { | ||
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| @Test | ||
| public void testCheckRuntimeContextAccess() { | ||
| final SerializedInputFormat<Value> inputFormat = new SerializedInputFormat<Value>(); | ||
| inputFormat.setRuntimeContext(new RuntimeUDFContext("test name", 3, 1, | ||
| getClass().getClassLoader(), new ExecutionConfig(), new HashMap<String, Accumulator<?, ?>>())); | ||
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| Assert.assertEquals(inputFormat.getRuntimeContext().getIndexOfThisSubtask(), 1); | ||
| Assert.assertEquals(inputFormat.getRuntimeContext().getNumberOfParallelSubtasks(),3); | ||
| } | ||
| } |
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