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.../iceberg/src/main/java/org/apache/beam/io/iceberg/IcebergReadSchemaTransformProvider.java
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| /* | ||
| * 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.io.iceberg; | ||
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| import com.google.auto.service.AutoService; | ||
| import com.google.auto.value.AutoValue; | ||
| import org.apache.beam.sdk.schemas.AutoValueSchema; | ||
| 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.io.iceberg.IcebergReadSchemaTransformProvider.Config; | ||
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| import org.apache.beam.sdk.values.PCollection; | ||
| import org.apache.beam.sdk.values.PCollectionRowTuple; | ||
| import org.apache.beam.sdk.values.Row; | ||
| import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Strings; | ||
| import org.apache.iceberg.catalog.TableIdentifier; | ||
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| import java.util.Collections; | ||
| import java.util.List; | ||
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| /** | ||
| * SchemaTransform implementation for {@link IcebergIO#readTable}. Reads records from Iceberg and outputs a | ||
| * {@link org.apache.beam.sdk.values.PCollection} of Beam {@link org.apache.beam.sdk.values.Row}s. | ||
| */ | ||
| @AutoService(SchemaTransformProvider.class) | ||
| public class IcebergReadSchemaTransformProvider extends TypedSchemaTransformProvider<Config> { | ||
| static final String OUTPUT_TAG = "output"; | ||
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| @Override | ||
| protected SchemaTransform from(Config configuration) { | ||
| configuration.validate(); | ||
| return new IcebergReadSchemaTransform(configuration); | ||
| } | ||
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| @Override | ||
| public List<String> outputCollectionNames() { | ||
| return Collections.singletonList(OUTPUT_TAG); | ||
| } | ||
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| @Override | ||
| public String identifier() { | ||
| return "beam:schematransform:org.apache.beam:iceberg_read:v1"; | ||
| } | ||
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| @DefaultSchema(AutoValueSchema.class) | ||
| @AutoValue | ||
| public abstract static class Config { | ||
| public static Builder builder() { | ||
| return new AutoValue_IcebergReadSchemaTransformProvider_Config.Builder(); | ||
| } | ||
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| public abstract String getTable(); | ||
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| public abstract SchemaTransformCatalogConfig getCatalogConfig(); | ||
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| @AutoValue.Builder | ||
| public abstract static class Builder { | ||
| public abstract Builder setTable(String tables); | ||
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| public abstract Builder setCatalogConfig(SchemaTransformCatalogConfig catalogConfig); | ||
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| public abstract Config build(); | ||
| } | ||
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| public void validate() { | ||
| getCatalogConfig().validate(); | ||
| } | ||
| } | ||
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| private static class IcebergReadSchemaTransform extends SchemaTransform { | ||
| private final Config configuration; | ||
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| IcebergReadSchemaTransform(Config configuration) { | ||
| this.configuration = configuration; | ||
| } | ||
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| @Override | ||
| public PCollectionRowTuple expand(PCollectionRowTuple input) { | ||
| SchemaTransformCatalogConfig catalogConfig = configuration.getCatalogConfig(); | ||
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| IcebergCatalogConfig.Builder catalogBuilder = | ||
| IcebergCatalogConfig.builder() | ||
| .setName(catalogConfig.getCatalogName()); | ||
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| if (!Strings.isNullOrEmpty(catalogConfig.getCatalogType())) { | ||
| catalogBuilder = catalogBuilder.setIcebergCatalogType(catalogConfig.getCatalogType()); | ||
| } | ||
| if (!Strings.isNullOrEmpty(catalogConfig.getWarehouseLocation())) { | ||
| catalogBuilder = catalogBuilder.setWarehouseLocation(catalogConfig.getWarehouseLocation()); | ||
| } | ||
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| PCollection<Row> output = input.getPipeline().apply(IcebergIO.readTable(catalogBuilder.build(), TableIdentifier.parse(configuration.getTable()))); | ||
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| return PCollectionRowTuple.of(OUTPUT_TAG, output); | ||
| } | ||
| } | ||
| } |
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59
...ava/io/iceberg/src/main/java/org/apache/beam/io/iceberg/SchemaTransformCatalogConfig.java
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| package org.apache.beam.io.iceberg; | ||
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| import com.google.auto.value.AutoValue; | ||
| import org.apache.beam.sdk.schemas.AutoValueSchema; | ||
| import org.apache.beam.sdk.schemas.annotations.DefaultSchema; | ||
| import org.apache.beam.sdk.util.Preconditions; | ||
| import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Strings; | ||
| import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.Sets; | ||
| import org.apache.iceberg.CatalogUtil; | ||
| import org.checkerframework.checker.nullness.qual.Nullable; | ||
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| import java.util.Set; | ||
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| import static org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkArgument; | ||
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| @DefaultSchema(AutoValueSchema.class) | ||
| @AutoValue | ||
| public abstract class SchemaTransformCatalogConfig { | ||
| public static Builder builder() { | ||
| return new AutoValue_SchemaTransformCatalogConfig.Builder(); | ||
| } | ||
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| public abstract String getCatalogName(); | ||
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| public abstract @Nullable String getCatalogType(); | ||
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| public abstract @Nullable String getCatalogImplementation(); | ||
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| public abstract @Nullable String getWarehouseLocation(); | ||
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| @AutoValue.Builder | ||
| public abstract static class Builder { | ||
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| public abstract Builder setCatalogName(String catalogName); | ||
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| public abstract Builder setCatalogType(String catalogType); | ||
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| public abstract Builder setCatalogImplementation(String catalogImplementation); | ||
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| public abstract Builder setWarehouseLocation(String warehouseLocation); | ||
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| public abstract SchemaTransformCatalogConfig build(); | ||
| } | ||
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| Set<String> validTypes = | ||
| Sets.newHashSet( | ||
| CatalogUtil.ICEBERG_CATALOG_TYPE_HADOOP, | ||
| CatalogUtil.ICEBERG_CATALOG_TYPE_HIVE, | ||
| CatalogUtil.ICEBERG_CATALOG_TYPE_REST); | ||
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| public void validate() { | ||
| if (Strings.isNullOrEmpty(getCatalogType())) { | ||
| checkArgument( | ||
| validTypes.contains(Preconditions.checkArgumentNotNull(getCatalogType())), | ||
| "Invalid catalog type. Please pick one of %s", | ||
| validTypes); | ||
| } | ||
| } | ||
| } |
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