| /* |
| * 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.expansion; |
| |
| import com.google.auto.service.AutoService; |
| import java.util.Map; |
| import org.apache.avro.Schema; |
| import org.apache.avro.generic.GenericRecord; |
| import org.apache.beam.runners.core.construction.expansion.ExpansionService; |
| import org.apache.beam.sdk.coders.AvroCoder; |
| import org.apache.beam.sdk.io.FileIO; |
| import org.apache.beam.sdk.io.parquet.ParquetIO; |
| import org.apache.beam.sdk.transforms.Count; |
| import org.apache.beam.sdk.transforms.Filter; |
| import org.apache.beam.sdk.transforms.PTransform; |
| import org.apache.beam.sdk.transforms.Values; |
| import org.apache.beam.sdk.values.PBegin; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.vendor.grpc.v1p21p0.io.grpc.Server; |
| import org.apache.beam.vendor.grpc.v1p21p0.io.grpc.ServerBuilder; |
| import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableMap; |
| |
| /** |
| * An {@link org.apache.beam.runners.core.construction.expansion.ExpansionService} useful for tests. |
| */ |
| public class TestExpansionService { |
| |
| private static final String TEST_COUNT_URN = "beam:transforms:xlang:count"; |
| private static final String TEST_FILTER_URN = "beam:transforms:xlang:filter_less_than_eq"; |
| private static final String TEST_PARQUET_READ_URN = "beam:transforms:xlang:parquet_read"; |
| private static final String TEST_PARQUET_WRITE_URN = "beam:transforms:xlang:parquet_write"; |
| |
| /** Registers a single test transformation. */ |
| @AutoService(ExpansionService.ExpansionServiceRegistrar.class) |
| public static class TestTransforms implements ExpansionService.ExpansionServiceRegistrar { |
| String rawSchema = |
| "{ \"type\": \"record\", \"name\": \"testrecord\", \"fields\": " |
| + "[ {\"name\": \"name\", \"type\": \"string\"} ]}"; |
| |
| @Override |
| public Map<String, ExpansionService.TransformProvider> knownTransforms() { |
| Schema schema = new Schema.Parser().parse(rawSchema); |
| return ImmutableMap.of( |
| TEST_COUNT_URN, spec -> Count.perElement(), |
| TEST_FILTER_URN, |
| spec -> |
| Filter.lessThanEq( |
| // TODO(BEAM-6587): Use strings directly rather than longs. |
| (long) spec.getPayload().toStringUtf8().charAt(0)), |
| TEST_PARQUET_READ_URN, |
| spec -> |
| new PTransform<PBegin, PCollection<GenericRecord>>() { |
| @Override |
| public PCollection<GenericRecord> expand(PBegin input) { |
| return input |
| .apply(FileIO.match().filepattern(spec.getPayload().toStringUtf8())) |
| .apply(FileIO.readMatches()) |
| .apply(ParquetIO.readFiles(schema)) |
| .setCoder(AvroCoder.of(schema)); |
| } |
| }, |
| TEST_PARQUET_WRITE_URN, |
| spec -> |
| new PTransform<PCollection<GenericRecord>, PCollection<String>>() { |
| @Override |
| public PCollection<String> expand(PCollection<GenericRecord> input) { |
| return input |
| .apply( |
| FileIO.<GenericRecord>write() |
| .via(ParquetIO.sink(schema)) |
| .to(spec.getPayload().toStringUtf8())) |
| .getPerDestinationOutputFilenames() |
| .apply(Values.create()); |
| } |
| }); |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| int port = Integer.parseInt(args[0]); |
| System.out.println("Starting expansion service at localhost:" + port); |
| Server server = ServerBuilder.forPort(port).addService(new ExpansionService()).build(); |
| server.start(); |
| server.awaitTermination(); |
| } |
| } |