| /** |
| * 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.pulsar.broker.service.schema.validator; |
| |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.module.jsonSchema.JsonSchema; |
| import java.io.IOException; |
| import org.apache.avro.Schema; |
| import org.apache.avro.SchemaParseException; |
| import org.apache.pulsar.broker.service.schema.exceptions.InvalidSchemaDataException; |
| import org.apache.pulsar.common.protocol.schema.SchemaData; |
| import org.apache.pulsar.common.schema.SchemaType; |
| import org.apache.pulsar.common.util.ObjectMapperFactory; |
| |
| /** |
| * Validate if the struct schema is in expected form. |
| */ |
| class StructSchemaDataValidator implements SchemaDataValidator { |
| |
| public static StructSchemaDataValidator of() { |
| return INSTANCE; |
| } |
| |
| private static final StructSchemaDataValidator INSTANCE = new StructSchemaDataValidator(); |
| |
| private StructSchemaDataValidator() {} |
| |
| @Override |
| public void validate(SchemaData schemaData) throws InvalidSchemaDataException { |
| byte[] data = schemaData.getData(); |
| |
| try { |
| Schema.Parser avroSchemaParser = new Schema.Parser(); |
| avroSchemaParser.parse(new String(data, UTF_8)); |
| } catch (SchemaParseException e) { |
| if (schemaData.getType() == SchemaType.JSON) { |
| // we used JsonSchema for storing the definition of a JSON schema |
| // hence for backward compatibility consideration, we need to try |
| // to use JsonSchema to decode the schema data |
| ObjectMapper objectMapper = ObjectMapperFactory.getThreadLocal(); |
| try { |
| objectMapper.readValue(data, JsonSchema.class); |
| } catch (IOException ioe) { |
| throwInvalidSchemaDataException(schemaData, ioe); |
| } |
| } else { |
| throwInvalidSchemaDataException(schemaData, e); |
| } |
| } catch (Exception e) { |
| throwInvalidSchemaDataException(schemaData, e); |
| } |
| } |
| |
| private static void throwInvalidSchemaDataException(SchemaData schemaData, |
| Throwable cause) throws InvalidSchemaDataException { |
| throw new InvalidSchemaDataException("Invalid schema definition data for " |
| + schemaData.getType() + " schema", cause); |
| } |
| } |