Java Code Examples for org.apache.beam.sdk.transforms.DoFn#ProcessElement

The following examples show how to use org.apache.beam.sdk.transforms.DoFn#ProcessElement . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: LocalSpannerIO.java From DataflowTemplates with Apache License 2.0

6 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) {
  MutationGroup mg = c.element();
  if (mg.primary().getOperation() == Op.DELETE && !isPointDelete(mg.primary())) {
    // Ranged deletes are not batchable.
    c.output(unbatchableMutationsTag, Arrays.asList(mg));
    unBatchableMutationGroupsCounter.inc();
    return;
  }

  SpannerSchema spannerSchema = c.sideInput(schemaView);
  long groupSize = MutationSizeEstimator.sizeOf(mg);
  long groupCells = MutationCellCounter.countOf(spannerSchema, mg);
  long groupRows = Iterables.size(mg);

  if (groupSize >= batchSizeBytes || groupCells >= maxNumMutations || groupRows >= maxNumRows) {
    c.output(unbatchableMutationsTag, Arrays.asList(mg));
    unBatchableMutationGroupsCounter.inc();
  } else {
    c.output(mg);
    batchableMutationGroupsCounter.inc();
  }
}

Example 2

Source File: DataStoreV1Table.java From beam with Apache License 2.0

6 votes

@DoFn.ProcessElement
public void processElement(ProcessContext context) {
  Row row = context.element();

  Schema schemaWithoutKeyField =
      Schema.builder()
          .addFields(
              row.getSchema().getFields().stream()
                  .filter(field -> !field.getName().equals(keyField))
                  .collect(Collectors.toList()))
          .build();
  Entity.Builder entityBuilder = constructEntityFromRow(schemaWithoutKeyField, row);
  entityBuilder.setKey(constructKeyFromRow(row));

  context.output(entityBuilder.build());
}

Example 3

Source File: DoFnInvokersTest.java From beam with Apache License 2.0

6 votes

@Test
public void testDoFnWithAllParameters() throws Exception {
  class MockFn extends DoFn<String, String> {
    @DoFn.ProcessElement
    public void processElement(
        ProcessContext c,
        @Element String element,
        @Timestamp Instant timestamp,
        IntervalWindow w,
        //        PaneInfo p,
        OutputReceiver<String> receiver,
        MultiOutputReceiver multiReceiver)
        throws Exception {}
  }

  MockFn fn = mock(MockFn.class);
  assertEquals(stop(), invokeProcessElement(fn));
  verify(fn)
      .processElement(
          mockProcessContext,
          mockElement,
          mockTimestamp,
          mockWindow,
          mockOutputReceiver,
          mockMultiOutputReceiver);
}

Example 4

Source File: DoFnInvokersTest.java From beam with Apache License 2.0

6 votes

@Test
public void testDoFnWithReturn() throws Exception {
  class MockFn extends DoFn<String, String> {
    @DoFn.ProcessElement
    public ProcessContinuation processElement(
        ProcessContext c, RestrictionTracker<SomeRestriction, Void> tracker) throws Exception {
      return null;
    }

    @GetInitialRestriction
    public SomeRestriction getInitialRestriction(@Element String element) {
      return null;
    }

    @NewTracker
    public SomeRestrictionTracker newTracker(@Restriction SomeRestriction restriction) {
      return null;
    }
  }

  MockFn fn = mock(MockFn.class);
  when(fn.processElement(mockProcessContext, null)).thenReturn(resume());
  assertEquals(resume(), invokeProcessElement(fn));
}

Example 5

Source File: SpannerIO.java From beam with Apache License 2.0

6 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) {
  MutationGroup mg = c.element();
  if (mg.primary().getOperation() == Op.DELETE && !isPointDelete(mg.primary())) {
    // Ranged deletes are not batchable.
    c.output(unbatchableMutationsTag, Arrays.asList(mg));
    unBatchableMutationGroupsCounter.inc();
    return;
  }

  SpannerSchema spannerSchema = c.sideInput(schemaView);
  long groupSize = MutationSizeEstimator.sizeOf(mg);
  long groupCells = MutationCellCounter.countOf(spannerSchema, mg);
  long groupRows = Iterables.size(mg);

  if (groupSize >= batchSizeBytes || groupCells >= maxNumMutations || groupRows >= maxNumRows) {
    c.output(unbatchableMutationsTag, Arrays.asList(mg));
    unBatchableMutationGroupsCounter.inc();
  } else {
    c.output(mg);
    batchableMutationGroupsCounter.inc();
  }
}

Example 6

Source File: DataStoreV1Table.java From beam with Apache License 2.0

5 votes

@DoFn.ProcessElement
public void processElement(ProcessContext context) {
  Entity entity = context.element();
  ImmutableMap.Builder<String, Value> mapBuilder = ImmutableMap.builder();
  mapBuilder.put(keyField, makeValue(entity.getKey()).build());
  mapBuilder.putAll(entity.getPropertiesMap());

  context.output(extractRowFromProperties(schema, mapBuilder.build()));
}

Example 7

Source File: MongoDbTable.java From beam with Apache License 2.0

5 votes

@DoFn.ProcessElement
public void processElement(ProcessContext context) {
  context.output(
      context
          .element()
          .toJson(JsonWriterSettings.builder().outputMode(JsonMode.RELAXED).build()));
}

Example 8

Source File: KinesisInputRuntime.java From components with Apache License 2.0

5 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) throws IOException {
    if (schema == null) {
        schema = new Schema.Parser().parse(schemaStr);
        datumReader = new GenericDatumReader<GenericRecord>(schema);
    }
    decoder = DecoderFactory.get().binaryDecoder(c.element().getDataAsBytes(), decoder);
    GenericRecord record = datumReader.read(null, decoder);
    c.output(record);
}

Example 9

Source File: BigQueryInputRuntime.java From components with Apache License 2.0

5 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) throws IOException {
    TableRow row = c.element();
    if (row == null) {
        return;
    }
    if (converter == null) {
        converter = new BigQueryTableRowIndexedRecordConverter();
        converter.setSchema(new Schema.Parser().parse(schemaStr));
    }
    c.output(converter.convertToAvro(row));
}

Example 10

Source File: HadoopFormatIO.java From beam with Apache License 2.0

5 votes

@DoFn.ProcessElement
public void processElement(
    @DoFn.Element KV<KeyT, ValueT> element,
    OutputReceiver<KV<KeyT, ValueT>> receiver,
    BoundedWindow window,
    ProcessContext c) {

  receiver.output(element);

  if (isSetupJobAttempted) {
    // setup of job was already attempted
    return;
  }

  Configuration conf = c.sideInput(configView);

  // validate configuration and input
  // must be done first, because in all later operations are required assumptions from
  // validation
  validateConfiguration(conf);
  validateInputData(conf);

  boolean isJobLockAcquired = externalSynchronization.tryAcquireJobLock(conf);
  isSetupJobAttempted = true;

  if (!isJobLockAcquired) {
    // some parallel execution acquired task
    return;
  }

  try {
    // setup job
    JobID jobId = HadoopFormats.getJobId(conf);

    trySetupJob(jobId, conf, window);

  } catch (Exception e) {
    throw new IllegalStateException(e);
  }
}

Example 11

Source File: HadoopFormatIO.java From beam with Apache License 2.0

5 votes

@DoFn.ProcessElement
public void processElement(
    @DoFn.Element KV<KeyT, ValueT> element,
    OutputReceiver<KV<Integer, KV<KeyT, ValueT>>> output,
    ProcessContext c) {

  if (taskId == null) {
    Configuration conf = c.sideInput(configView);
    taskId = externalSynchronization.acquireTaskIdLock(conf);
  }

  output.output(KV.of(taskId.getId(), element));
}

Example 12

Source File: PubSubInputRuntime.java From components with Apache License 2.0

5 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) throws IOException {
    if (schema == null) {
        schema = new Schema.Parser().parse(schemaStr);
        datumReader = new GenericDatumReader<GenericRecord>(schema);
    }
    decoder = DecoderFactory.get().binaryDecoder(c.element().getPayload(), decoder);
    GenericRecord record = datumReader.read(null, decoder);
    c.output(record);
}

Example 13

Source File: KafkaInputPTransformRuntime.java From components with Apache License 2.0

4 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) {
    c.output(c.element().getKV());
}

Example 14

Source File: ExtractCsvSplit.java From components with Apache License 2.0

4 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) {
    String record = new String(c.element().getPayload(), Charset.forName("UTF-8"));
    c.output(record.split(fieldDelimiter));
}

Example 15

Source File: DirectCollector.java From components with Apache License 2.0

4 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) throws Exception {
    // Guaranteed to be present and initialized.
    DirectCollector.getRecords(uid).add(c.element());
}

Example 16

Source File: HadoopFormatIOSequenceFileTest.java From beam with Apache License 2.0

4 votes

@DoFn.ProcessElement
public void processElement(@DoFn.Element String element, OutputReceiver<String> receiver) {
  receiver.output(element.toLowerCase());
}

Example 17

Source File: HadoopFormatIOSequenceFileTest.java From beam with Apache License 2.0

4 votes

@DoFn.ProcessElement
public void processElement(@DoFn.Element InputT element, OutputReceiver<OutputT> outReceiver) {
  outReceiver.output(transformFn.apply(element));
}

Example 18

Source File: ElasticsearchOutputRuntime.java From components with Apache License 2.0

4 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) {
    IndexedRecord in = c.element();
    c.output(in.toString());
}

Example 19

Source File: DoFnInvokersTest.java From beam with Apache License 2.0

4 votes

@DoFn.ProcessElement
void processElement(DoFn<String, String>.ProcessContext c);

Example 20

Source File: TestParseUserAgentSQL.java From yauaa with Apache License 2.0

4 votes

@DoFn.ProcessElement
public void processElement(ProcessContext c) {
    final Row row = c.element();
    LOG.info("ROW: {} --> {}", row, row.getSchema());
}