| /* |
| * 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.hudi.utilities.sources; |
| |
| import org.apache.hudi.common.config.TypedProperties; |
| import org.apache.hudi.common.util.Option; |
| import org.apache.hudi.exception.HoodieException; |
| import org.apache.hudi.utilities.schema.SchemaProvider; |
| |
| import org.apache.avro.Schema; |
| import org.apache.spark.api.java.JavaSparkContext; |
| |
| public class InputBatch<T> { |
| |
| private final Option<T> batch; |
| private final String checkpointForNextBatch; |
| private final SchemaProvider schemaProvider; |
| |
| public InputBatch(Option<T> batch, String checkpointForNextBatch, SchemaProvider schemaProvider) { |
| this.batch = batch; |
| this.checkpointForNextBatch = checkpointForNextBatch; |
| this.schemaProvider = schemaProvider; |
| } |
| |
| public InputBatch(Option<T> batch, String checkpointForNextBatch) { |
| this.batch = batch; |
| this.checkpointForNextBatch = checkpointForNextBatch; |
| this.schemaProvider = null; |
| } |
| |
| public Option<T> getBatch() { |
| return batch; |
| } |
| |
| public String getCheckpointForNextBatch() { |
| return checkpointForNextBatch; |
| } |
| |
| public SchemaProvider getSchemaProvider() { |
| if (batch.isPresent() && schemaProvider == null) { |
| throw new HoodieException("Please provide a valid schema provider class!"); |
| } |
| return Option.ofNullable(schemaProvider).orElse(new NullSchemaProvider()); |
| } |
| |
| public static class NullSchemaProvider extends SchemaProvider { |
| |
| public NullSchemaProvider() { |
| this(null, null); |
| } |
| |
| public NullSchemaProvider(TypedProperties props, JavaSparkContext jssc) { |
| super(props, jssc); |
| } |
| |
| @Override |
| public Schema getSourceSchema() { |
| return Schema.create(Schema.Type.NULL); |
| } |
| } |
| } |