| /* |
| * 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.bigquery; |
| |
| import com.google.api.services.bigquery.model.TableReference; |
| import java.io.IOException; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.options.PipelineOptions; |
| import org.apache.beam.sdk.transforms.SerializableFunction; |
| import org.apache.beam.sdk.transforms.display.DisplayData; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.annotations.VisibleForTesting; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** A {@link BigQuerySourceBase} for querying BigQuery tables. */ |
| @VisibleForTesting |
| class BigQueryQuerySource<T> extends BigQuerySourceBase<T> { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(BigQueryQuerySource.class); |
| |
| static <T> BigQueryQuerySource<T> create( |
| String stepUuid, |
| BigQueryQuerySourceDef queryDef, |
| BigQueryServices bqServices, |
| Coder<T> coder, |
| SerializableFunction<SchemaAndRecord, T> parseFn) { |
| return new BigQueryQuerySource<>(stepUuid, queryDef, bqServices, coder, parseFn); |
| } |
| |
| private final BigQueryQuerySourceDef queryDef; |
| |
| private BigQueryQuerySource( |
| String stepUuid, |
| BigQueryQuerySourceDef queryDef, |
| BigQueryServices bqServices, |
| Coder<T> coder, |
| SerializableFunction<SchemaAndRecord, T> parseFn) { |
| super(stepUuid, bqServices, coder, parseFn); |
| this.queryDef = queryDef; |
| } |
| |
| @Override |
| public long getEstimatedSizeBytes(PipelineOptions options) throws Exception { |
| return queryDef.getEstimatedSizeBytes(options.as(BigQueryOptions.class)); |
| } |
| |
| @Override |
| protected TableReference getTableToExtract(BigQueryOptions bqOptions) |
| throws IOException, InterruptedException { |
| return queryDef.getTableReference(bqOptions, stepUuid); |
| } |
| |
| @Override |
| protected void cleanupTempResource(BigQueryOptions bqOptions) throws Exception { |
| queryDef.cleanupTempResource(bqOptions, stepUuid); |
| } |
| |
| @Override |
| public void populateDisplayData(DisplayData.Builder builder) { |
| super.populateDisplayData(builder); |
| builder.add(DisplayData.item("query", queryDef.getQuery())); |
| } |
| } |