Examples with SideOutputTransformation org.apache.flink.streaming.api.transformations.SideOutputTransformation used on opensource projects

Example 1 with SideOutputTransformation

use of org.apache.flink.streaming.api.transformations.SideOutputTransformation in project flink by apache.

the class PythonOperatorChainingOptimizer method replaceInput.

private static void replaceInput(Transformation<?> transformation, Transformation<?> oldInput, Transformation<?> newInput) {
    try {
        if (transformation instanceof OneInputTransformation || transformation instanceof FeedbackTransformation || transformation instanceof SideOutputTransformation || transformation instanceof ReduceTransformation || transformation instanceof SinkTransformation || transformation instanceof LegacySinkTransformation || transformation instanceof TimestampsAndWatermarksTransformation || transformation instanceof PartitionTransformation) {
            final Field inputField = transformation.getClass().getDeclaredField("input");
            inputField.setAccessible(true);
            inputField.set(transformation, newInput);
        } else if (transformation instanceof TwoInputTransformation) {
            final Field inputField;
            if (((TwoInputTransformation<?, ?, ?>) transformation).getInput1() == oldInput) {
                inputField = transformation.getClass().getDeclaredField("input1");
            } else {
                inputField = transformation.getClass().getDeclaredField("input2");
            }
            inputField.setAccessible(true);
            inputField.set(transformation, newInput);
        } else if (transformation instanceof UnionTransformation || transformation instanceof AbstractMultipleInputTransformation) {
            final Field inputsField = transformation.getClass().getDeclaredField("inputs");
            inputsField.setAccessible(true);
            List<Transformation<?>> newInputs = Lists.newArrayList();
            newInputs.addAll(transformation.getInputs());
            newInputs.remove(oldInput);
            newInputs.add(newInput);
            inputsField.set(transformation, newInputs);
        } else if (transformation instanceof AbstractBroadcastStateTransformation) {
            final Field inputField;
            if (((AbstractBroadcastStateTransformation<?, ?, ?>) transformation).getRegularInput() == oldInput) {
                inputField = transformation.getClass().getDeclaredField("regularInput");
            } else {
                inputField = transformation.getClass().getDeclaredField("broadcastInput");
            }
            inputField.setAccessible(true);
            inputField.set(transformation, newInput);
        } else {
            throw new RuntimeException("Unsupported transformation: " + transformation);
        }
    } catch (NoSuchFieldException | IllegalAccessException e) {
        // This should never happen
        throw new RuntimeException(e);
    }
}

Example 2 with SideOutputTransformation

use of org.apache.flink.streaming.api.transformations.SideOutputTransformation in project flink by apache.

the class SideOutputTransformationTranslator method translateInternal.

private Collection<Integer> translateInternal(final SideOutputTransformation<OUT> transformation, final Context context) {
    checkNotNull(transformation);
    checkNotNull(context);
    final StreamGraph streamGraph = context.getStreamGraph();
    final List<Transformation<?>> parentTransformations = transformation.getInputs();
    checkState(parentTransformations.size() == 1, "Expected exactly one input transformation but found " + parentTransformations.size());
    final List<Integer> virtualResultIds = new ArrayList<>();
    final Transformation<?> parentTransformation = parentTransformations.get(0);
    for (int inputId : context.getStreamNodeIds(parentTransformation)) {
        final int virtualId = Transformation.getNewNodeId();
        streamGraph.addVirtualSideOutputNode(inputId, virtualId, transformation.getOutputTag());
        virtualResultIds.add(virtualId);
    }
    return virtualResultIds;
}