/**
* 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.tajo.storage.avro;
import java.io.IOException;
import org.apache.avro.Schema;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.tajo.storage.StorageConstants;
import org.apache.tajo.catalog.TableMeta;
public class AvroUtil {
public static Schema getAvroSchema(TableMeta meta, Configuration conf)
throws IOException {
String schemaLiteral = meta.getOption(StorageConstants.AVRO_SCHEMA_LITERAL);
String schemaUrl = meta.getOption(StorageConstants.AVRO_SCHEMA_URL);
if (schemaLiteral == null && schemaUrl == null) {
throw new RuntimeException("No Avro schema for table.");
}
if (schemaLiteral != null) {
return new Schema.Parser().parse(schemaLiteral);
}
Path schemaPath = new Path(schemaUrl);
FileSystem fs = schemaPath.getFileSystem(conf);
FSDataInputStream inputStream = fs.open(schemaPath);
return new Schema.Parser().parse(inputStream);
}
}