ahmedabu98 commented on code in PR #24278: URL: https://github.com/apache/beam/pull/24278#discussion_r1030853369
########## sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/spanner/SpannerSchemaTransformWriteProvider.java: ########## @@ -0,0 +1,173 @@ +/* + * 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.sdk.io.gcp.spanner; + +import com.google.auto.service.AutoService; +import com.google.auto.value.AutoValue; +import com.google.cloud.spanner.Mutation; +import java.io.Serializable; +import java.util.Collections; +import java.util.List; +import java.util.Objects; +import java.util.stream.Collectors; +import org.apache.beam.sdk.schemas.AutoValueSchema; +import org.apache.beam.sdk.schemas.Schema; +import org.apache.beam.sdk.schemas.annotations.DefaultSchema; +import org.apache.beam.sdk.schemas.transforms.SchemaTransform; +import org.apache.beam.sdk.schemas.transforms.SchemaTransformProvider; +import org.apache.beam.sdk.schemas.transforms.TypedSchemaTransformProvider; +import org.apache.beam.sdk.transforms.FlatMapElements; +import org.apache.beam.sdk.transforms.MapElements; +import org.apache.beam.sdk.transforms.PTransform; +import org.apache.beam.sdk.transforms.SimpleFunction; +import org.apache.beam.sdk.values.PCollectionRowTuple; +import org.apache.beam.sdk.values.Row; +import org.apache.beam.sdk.values.TypeDescriptors; +import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Iterators; +import org.checkerframework.checker.initialization.qual.Initialized; +import org.checkerframework.checker.nullness.qual.NonNull; +import org.checkerframework.checker.nullness.qual.UnknownKeyFor; + +@AutoService(SchemaTransformProvider.class) +public class SpannerSchemaTransformWriteProvider + extends TypedSchemaTransformProvider< + SpannerSchemaTransformWriteProvider.SpannerSchemaTransformWriteConfiguration> { + + @Override + protected @UnknownKeyFor @NonNull @Initialized Class< + SpannerSchemaTransformWriteProvider.SpannerSchemaTransformWriteConfiguration> + configurationClass() { + return SpannerSchemaTransformWriteConfiguration.class; + } + + @Override + protected @UnknownKeyFor @NonNull @Initialized SchemaTransform from( + SpannerSchemaTransformWriteConfiguration configuration) { + return new SpannerSchemaTransformWrite(configuration); + } + + static class SpannerSchemaTransformWrite implements SchemaTransform, Serializable { + private final SpannerSchemaTransformWriteConfiguration configuration; + + SpannerSchemaTransformWrite(SpannerSchemaTransformWriteConfiguration configuration) { + this.configuration = configuration; + } + + @Override + public @UnknownKeyFor @NonNull @Initialized PTransform< + @UnknownKeyFor @NonNull @Initialized PCollectionRowTuple, + @UnknownKeyFor @NonNull @Initialized PCollectionRowTuple> + buildTransform() { + return new PTransform<@NonNull PCollectionRowTuple, @NonNull PCollectionRowTuple>() { + @Override + public PCollectionRowTuple expand(@NonNull PCollectionRowTuple input) { + SpannerWriteResult result = + input + .get("input") + .apply( + MapElements.via( + new SimpleFunction<Row, Mutation>( + row -> + MutationUtils.createMutationFromBeamRows( + Mutation.newInsertOrUpdateBuilder(configuration.getTableId()), + Objects.requireNonNull(row))) {})) + .apply( + SpannerIO.write() + .withDatabaseId(configuration.getDatabaseId()) + .withInstanceId(configuration.getInstanceId()) + .withFailureMode(SpannerIO.FailureMode.REPORT_FAILURES)); + Schema failureSchema = + Schema.builder() + .addStringField("operation") + .addStringField("instanceId") + .addStringField("databaseId") + .addStringField("tableId") + .addStringField("mutationData") + .build(); + result + .getFailedMutations() + .apply( + FlatMapElements.into(TypeDescriptors.rows()) + .via( + mtg -> + Objects.requireNonNull(mtg).attached().stream() + .map( + mutation -> + Row.withSchema(failureSchema) + .addValue(mutation.getOperation().toString()) + .addValue(configuration.getInstanceId()) + .addValue(configuration.getDatabaseId()) + .addValue(mutation.getTable()) + // TODO(pabloem): Figure out how to represent + // mutation + // contents in DLQ + .addValue( + Iterators.toString( + mutation.getValues().iterator())) + .build()) + .collect(Collectors.toList()))) + .setRowSchema(failureSchema); + return PCollectionRowTuple.empty(input.getPipeline()); Review Comment: Yup! can you leave a TODO for later? maybe someone can pick it up. Same with the validation checks -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
