public static PipelineResult run()

in v2/googlecloud-to-googlecloud/src/main/java/com/google/cloud/teleport/v2/templates/bigtablechangestreamstovectorsearch/BigtableChangeStreamsToVectorSearch.java [93:217]
113 lines of code
7 McCabe index (conditional complexity)

  public static PipelineResult run(BigtableChangeStreamsToVectorSearchOptions options)
      throws IOException {
    options.setStreaming(true);
    options.setEnableStreamingEngine(true);

    List<String> experiments = options.getExperiments();
    if (experiments == null) {
      experiments = new ArrayList<>();
    }
    boolean hasUseRunnerV2 = false;
    for (String experiment : experiments) {
      if (experiment.equalsIgnoreCase(USE_RUNNER_V2_EXPERIMENT)) {
        hasUseRunnerV2 = true;
        break;
      }
    }
    if (!hasUseRunnerV2) {
      experiments.add(USE_RUNNER_V2_EXPERIMENT);
    }
    options.setExperiments(experiments);

    Instant startTimestamp =
        options.getBigtableChangeStreamStartTimestamp().isEmpty()
            ? Instant.now()
            : toInstant(Timestamp.parseTimestamp(options.getBigtableChangeStreamStartTimestamp()));

    String bigtableProjectId = getBigtableProjectId(options);

    LOG.info("  - startTimestamp {}", startTimestamp);
    LOG.info("  - bigtableReadInstanceId {}", options.getBigtableReadInstanceId());
    LOG.info("  - bigtableReadTableId {}", options.getBigtableReadTableId());
    LOG.info("  - bigtableChangeStreamAppProfile {}", options.getBigtableChangeStreamAppProfile());
    LOG.info("  - embeddingColumn {}", options.getEmbeddingColumn());
    LOG.info("  - crowdingTagColumn {}", options.getCrowdingTagColumn());
    LOG.info("  - project {}", options.getProject());
    LOG.info("  - indexName {}", options.getVectorSearchIndex());

    String indexName = options.getVectorSearchIndex();

    String vertexRegion = Utils.extractRegionFromIndexName(indexName);
    String vertexEndpoint = vertexRegion + "-aiplatform.googleapis.com:443";

    final Pipeline pipeline = Pipeline.create(options);

    DeadLetterQueueManager dlqManager = buildDlqManager(options);

    BigtableIO.ReadChangeStream readChangeStream =
        BigtableIO.readChangeStream()
            .withChangeStreamName(options.getBigtableChangeStreamName())
            .withExistingPipelineOptions(
                options.getBigtableChangeStreamResume()
                    ? BigtableIO.ExistingPipelineOptions.RESUME_OR_FAIL
                    : BigtableIO.ExistingPipelineOptions.FAIL_IF_EXISTS)
            .withProjectId(bigtableProjectId)
            .withAppProfileId(options.getBigtableChangeStreamAppProfile())
            .withInstanceId(options.getBigtableReadInstanceId())
            .withTableId(options.getBigtableReadTableId())
            .withMetadataTableInstanceId(options.getBigtableChangeStreamMetadataInstanceId())
            .withMetadataTableTableId(options.getBigtableMetadataTableTableId())
            .withStartTime(startTimestamp);

    PCollectionTuple results =
        pipeline
            .apply("Read from Cloud Bigtable Change Streams", readChangeStream)
            .apply("Create Values", Values.create())
            .apply(
                "Converting to Vector Search Datapoints",
                ParDo.of(
                        new ChangeStreamMutationToDatapointOperationFn(
                            options.getEmbeddingColumn(),
                            options.getEmbeddingByteSize(),
                            options.getCrowdingTagColumn(),
                            Utils.parseColumnMapping(options.getAllowRestrictsMappings()),
                            Utils.parseColumnMapping(options.getDenyRestrictsMappings()),
                            Utils.parseColumnMapping(options.getIntNumericRestrictsMappings()),
                            Utils.parseColumnMapping(options.getFloatNumericRestrictsMappings()),
                            Utils.parseColumnMapping(options.getDoubleNumericRestrictsMappings())))
                    .withOutputTags(
                        ChangeStreamMutationToDatapointOperationFn.UPSERT_DATAPOINT_TAG,
                        TupleTagList.of(
                            ChangeStreamMutationToDatapointOperationFn.REMOVE_DATAPOINT_TAG)));
    results
        .get(ChangeStreamMutationToDatapointOperationFn.UPSERT_DATAPOINT_TAG)
        .apply("Add placeholer keys", WithKeys.of("placeholder"))
        .apply(
            "Batch Contents",
            GroupIntoBatches.<String, IndexDatapoint>ofSize(
                    bufferSizeOption(options.getUpsertMaxBatchSize()))
                .withMaxBufferingDuration(
                    bufferDurationOption(options.getUpsertMaxBufferDuration())))
        .apply("Map to Values", Values.create())
        .apply(
            "Upsert Datapoints to VectorSearch",
            ParDo.of(new UpsertDatapointsFn(vertexEndpoint, indexName)))
        .apply(
            "Write errors to DLQ",
            DLQWriteTransform.WriteDLQ.newBuilder()
                .withDlqDirectory(dlqManager.getSevereDlqDirectory() + "YYYY/MM/dd/HH/mm/")
                .withTmpDirectory(dlqManager.getSevereDlqDirectory() + "tmp/")
                .setIncludePaneInfo(true)
                .build());

    results
        .get(ChangeStreamMutationToDatapointOperationFn.REMOVE_DATAPOINT_TAG)
        .apply("Add placeholder keys", WithKeys.of("placeholer"))
        .apply(
            "Batch Contents",
            GroupIntoBatches.<String, String>ofSize(
                    bufferSizeOption(options.getDeleteMaxBatchSize()))
                .withMaxBufferingDuration(
                    bufferDurationOption(options.getDeleteMaxBufferDuration())))
        .apply("Map to Values", Values.create())
        .apply(
            "Remove Datapoints From VectorSearch",
            ParDo.of(new RemoveDatapointsFn(vertexEndpoint, indexName)))
        .apply(
            "Write errors to DLQ",
            DLQWriteTransform.WriteDLQ.newBuilder()
                .withDlqDirectory(dlqManager.getSevereDlqDirectory() + "YYYY/MM/dd/HH/mm/")
                .withTmpDirectory(dlqManager.getSevereDlqDirectory() + "tmp/")
                .setIncludePaneInfo(true)
                .build());

    return pipeline.run();
  }