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From echauc...@apache.org
Subject [beam] 02/50: Fix missing dep
Date Fri, 04 Jan 2019 10:38:24 GMT
This is an automated email from the ASF dual-hosted git repository.

echauchot pushed a commit to branch spark-runner_structured-streaming
in repository https://gitbox.apache.org/repos/asf/beam.git

commit 737af2f32b74ea1c067851ae5efb376ad31f392b
Author: Etienne Chauchot <echauchot@apache.org>
AuthorDate: Wed Nov 14 14:35:08 2018 +0100

    Fix missing dep
---
 .../org/apache/beam/gradle/BeamModulePlugin.groovy |   2 +-
 .../translation/EvaluationContext.java             | 261 +++++++++++++++++++++
 2 files changed, 262 insertions(+), 1 deletion(-)

diff --git a/buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy b/buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy
index e6cfed1..f171445 100644
--- a/buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy
+++ b/buildSrc/src/main/groovy/org/apache/beam/gradle/BeamModulePlugin.groovy
@@ -441,7 +441,7 @@ class BeamModulePlugin implements Plugin<Project> {
         slf4j_jdk14                                 : "org.slf4j:slf4j-jdk14:1.7.25",
         slf4j_log4j12                               : "org.slf4j:slf4j-log4j12:1.7.25",
         snappy_java                                 : "org.xerial.snappy:snappy-java:1.1.4",
-        spark_sql                                   : "org.apache.spark:spark-core_2.11:$spark_structured_streaming_version",
+        spark_sql                                   : "org.apache.spark:spark-sql_2.11:$spark_structured_streaming_version",
         spark_core                                  : "org.apache.spark:spark-core_2.11:$spark_version",
         spark_network_common                        : "org.apache.spark:spark-network-common_2.11:$spark_version",
         spark_streaming                             : "org.apache.spark:spark-streaming_2.11:$spark_version",
diff --git a/runners/spark-structured-streaming/src/main/java/org/apache/beam/runners/spark/structuredstreaming/translation/EvaluationContext.java
b/runners/spark-structured-streaming/src/main/java/org/apache/beam/runners/spark/structuredstreaming/translation/EvaluationContext.java
new file mode 100644
index 0000000..47a3098
--- /dev/null
+++ b/runners/spark-structured-streaming/src/main/java/org/apache/beam/runners/spark/structuredstreaming/translation/EvaluationContext.java
@@ -0,0 +1,261 @@
+/*
+ * 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.spark.structuredstreaming.translation;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.collect.Iterables;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.LinkedHashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.apache.beam.runners.core.construction.SerializablePipelineOptions;
+import org.apache.beam.runners.core.construction.TransformInputs;
+import org.apache.beam.runners.spark.structuredstreaming.SparkPipelineOptions;
+import org.apache.beam.sdk.Pipeline;
+import org.apache.beam.sdk.coders.Coder;
+import org.apache.beam.sdk.options.PipelineOptions;
+import org.apache.beam.sdk.runners.AppliedPTransform;
+import org.apache.beam.sdk.transforms.PTransform;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.apache.beam.sdk.util.WindowedValue;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionView;
+import org.apache.beam.sdk.values.PValue;
+import org.apache.beam.sdk.values.TupleTag;
+import org.apache.spark.api.java.JavaRDD;
+import org.apache.spark.api.java.JavaSparkContext;
+import org.apache.spark.sql.SparkSession;
+import org.apache.spark.streaming.api.java.JavaStreamingContext;
+
+/**
+ * The EvaluationContext allows us to define pipeline instructions and translate between
{@code
+ * PObject<T>}s or {@code PCollection<T>}s and Ts or DStreams/RDDs of Ts.
+ */
+public class EvaluationContext {
+  private SparkSession sparkSession;
+  private final Pipeline pipeline;
+  private final Map<PValue, Dataset> datasets = new LinkedHashMap<>();
+  private final Map<PValue, Dataset> pcollections = new LinkedHashMap<>();
+  private final Set<Dataset> leaves = new LinkedHashSet<>();
+  private final Map<PValue, Object> pobjects = new LinkedHashMap<>();
+  private AppliedPTransform<?, ?, ?> currentTransform;
+  private final SparkPCollectionView pviews = new SparkPCollectionView();
+  private final Map<PCollection, Long> cacheCandidates = new HashMap<>();
+  private final PipelineOptions options;
+  private final SerializablePipelineOptions serializableOptions;
+
+  public EvaluationContext(JavaSparkContext jsc, Pipeline pipeline, PipelineOptions options)
{
+    this.jsc = jsc;
+    this.pipeline = pipeline;
+    this.options = options;
+    this.serializableOptions = new SerializablePipelineOptions(options);
+  }
+
+  public EvaluationContext(
+      JavaSparkContext jsc, Pipeline pipeline, PipelineOptions options, JavaStreamingContext
jssc) {
+    this(jsc, pipeline, options);
+    this.jssc = jssc;
+  }
+
+  public JavaSparkContext getSparkContext() {
+    return jsc;
+  }
+
+  public JavaStreamingContext getStreamingContext() {
+    return jssc;
+  }
+
+  public Pipeline getPipeline() {
+    return pipeline;
+  }
+
+  public PipelineOptions getOptions() {
+    return options;
+  }
+
+  public SerializablePipelineOptions getSerializableOptions() {
+    return serializableOptions;
+  }
+
+  public void setCurrentTransform(AppliedPTransform<?, ?, ?> transform) {
+    this.currentTransform = transform;
+  }
+
+  public AppliedPTransform<?, ?, ?> getCurrentTransform() {
+    return currentTransform;
+  }
+
+  public <T extends PValue> T getInput(PTransform<T, ?> transform) {
+    @SuppressWarnings("unchecked")
+    T input =
+        (T) Iterables.getOnlyElement(TransformInputs.nonAdditionalInputs(getCurrentTransform()));
+    return input;
+  }
+
+  public <T> Map<TupleTag<?>, PValue> getInputs(PTransform<?, ?>
transform) {
+    checkArgument(currentTransform != null, "can only be called with non-null currentTransform");
+    checkArgument(
+        currentTransform.getTransform() == transform, "can only be called with current transform");
+    return currentTransform.getInputs();
+  }
+
+  public <T extends PValue> T getOutput(PTransform<?, T> transform) {
+    @SuppressWarnings("unchecked")
+    T output = (T) Iterables.getOnlyElement(getOutputs(transform).values());
+    return output;
+  }
+
+  public Map<TupleTag<?>, PValue> getOutputs(PTransform<?, ?> transform)
{
+    checkArgument(currentTransform != null, "can only be called with non-null currentTransform");
+    checkArgument(
+        currentTransform.getTransform() == transform, "can only be called with current transform");
+    return currentTransform.getOutputs();
+  }
+
+  public Map<TupleTag<?>, Coder<?>> getOutputCoders() {
+    return currentTransform
+        .getOutputs()
+        .entrySet()
+        .stream()
+        .filter(e -> e.getValue() instanceof PCollection)
+        .collect(Collectors.toMap(e -> e.getKey(), e -> ((PCollection) e.getValue()).getCoder()));
+  }
+
+  private boolean shouldCache(PValue pvalue) {
+    if ((pvalue instanceof PCollection)
+        && cacheCandidates.containsKey(pvalue)
+        && cacheCandidates.get(pvalue) > 1) {
+      return true;
+    }
+    return false;
+  }
+
+  public void putDataset(
+      PTransform<?, ? extends PValue> transform, Dataset dataset, boolean forceCache)
{
+    putDataset(getOutput(transform), dataset, forceCache);
+  }
+
+  public void putDataset(PTransform<?, ? extends PValue> transform, Dataset dataset)
{
+    putDataset(transform, dataset, false);
+  }
+
+  public void putDataset(PValue pvalue, Dataset dataset, boolean forceCache) {
+    try {
+      dataset.setName(pvalue.getName());
+    } catch (IllegalStateException e) {
+      // name not set, ignore
+    }
+    if ((forceCache || shouldCache(pvalue)) && pvalue instanceof PCollection) {
+      // we cache only PCollection
+      Coder<?> coder = ((PCollection<?>) pvalue).getCoder();
+      Coder<? extends BoundedWindow> wCoder =
+          ((PCollection<?>) pvalue).getWindowingStrategy().getWindowFn().windowCoder();
+      dataset.cache(storageLevel(), WindowedValue.getFullCoder(coder, wCoder));
+    }
+    datasets.put(pvalue, dataset);
+    leaves.add(dataset);
+  }
+
+  public Dataset borrowDataset(PTransform<? extends PValue, ?> transform) {
+    return borrowDataset(getInput(transform));
+  }
+
+  public Dataset borrowDataset(PValue pvalue) {
+    Dataset dataset = datasets.get(pvalue);
+    leaves.remove(dataset);
+    return dataset;
+  }
+
+  /**
+   * Computes the outputs for all RDDs that are leaves in the DAG and do not have any actions
(like
+   * saving to a file) registered on them (i.e. they are performed for side effects).
+   */
+  public void computeOutputs() {
+    for (Dataset dataset : leaves) {
+      dataset.action(); // force computation.
+    }
+  }
+
+  /**
+   * Retrieve an object of Type T associated with the PValue passed in.
+   *
+   * @param value PValue to retrieve associated data for.
+   * @param <T> Type of object to return.
+   * @return Native object.
+   */
+  @SuppressWarnings("TypeParameterUnusedInFormals")
+  public <T> T get(PValue value) {
+    if (pobjects.containsKey(value)) {
+      T result = (T) pobjects.get(value);
+      return result;
+    }
+    if (pcollections.containsKey(value)) {
+      JavaRDD<?> rdd = ((BoundedDataset) pcollections.get(value)).getRDD();
+      T res = (T) Iterables.getOnlyElement(rdd.collect());
+      pobjects.put(value, res);
+      return res;
+    }
+    throw new IllegalStateException("Cannot resolve un-known PObject: " + value);
+  }
+
+  /**
+   * Return the current views creates in the pipeline.
+   *
+   * @return SparkPCollectionView
+   */
+  public SparkPCollectionView getPViews() {
+    return pviews;
+  }
+
+  /**
+   * Adds/Replaces a view to the current views creates in the pipeline.
+   *
+   * @param view - Identifier of the view
+   * @param value - Actual value of the view
+   * @param coder - Coder of the value
+   */
+  public void putPView(
+      PCollectionView<?> view,
+      Iterable<WindowedValue<?>> value,
+      Coder<Iterable<WindowedValue<?>>> coder) {
+    pviews.putPView(view, value, coder);
+  }
+
+  /**
+   * Get the map of cache candidates hold by the evaluation context.
+   *
+   * @return The current {@link Map} of cache candidates.
+   */
+  public Map<PCollection, Long> getCacheCandidates() {
+    return this.cacheCandidates;
+  }
+
+  <T> Iterable<WindowedValue<T>> getWindowedValues(PCollection<T>
pcollection) {
+    @SuppressWarnings("unchecked")
+    BoundedDataset<T> boundedDataset = (BoundedDataset<T>) datasets.get(pcollection);
+    leaves.remove(boundedDataset);
+    return boundedDataset.getValues(pcollection);
+  }
+
+  public String storageLevel() {
+    return serializableOptions.get().as(SparkPipelineOptions.class).getStorageLevel();
+  }
+}


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