| /** |
| * 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; |
| |
| import com.google.common.collect.Maps; |
| import java.lang.reflect.Method; |
| import java.util.Map; |
| import java.util.Set; |
| import org.apache.pulsar.broker.PulsarService; |
| import org.apache.pulsar.broker.ServiceConfiguration; |
| import org.apache.pulsar.broker.service.schema.validator.SchemaRegistryServiceWithSchemaDataValidator; |
| import org.apache.pulsar.common.schema.SchemaType; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public interface SchemaRegistryService extends SchemaRegistry { |
| String CreateMethodName = "create"; |
| Logger log = LoggerFactory.getLogger(SchemaRegistryService.class); |
| |
| static Map<SchemaType, SchemaCompatibilityCheck> getCheckers(Set<String> checkerClasses) throws Exception { |
| Map<SchemaType, SchemaCompatibilityCheck> checkers = Maps.newHashMap(); |
| for (String className : checkerClasses) { |
| final Class<?> checkerClass = Class.forName(className); |
| SchemaCompatibilityCheck instance = (SchemaCompatibilityCheck) checkerClass.newInstance(); |
| checkers.put(instance.getSchemaType(), instance); |
| } |
| return checkers; |
| } |
| |
| static SchemaRegistryService create(PulsarService pulsar) { |
| try { |
| ServiceConfiguration config = pulsar.getConfiguration(); |
| final Class<?> storageClass = Class.forName(config.getSchemaRegistryStorageClassName()); |
| Object factoryInstance = storageClass.newInstance(); |
| Method createMethod = storageClass.getMethod(CreateMethodName, PulsarService.class); |
| |
| SchemaStorage schemaStorage = (SchemaStorage) createMethod.invoke(factoryInstance, pulsar); |
| |
| Map<SchemaType, SchemaCompatibilityCheck> checkers = |
| getCheckers(config.getSchemaRegistryCompatibilityCheckers()); |
| |
| checkers.put(SchemaType.KEY_VALUE, new KeyValueSchemaCompatibilityCheck(checkers)); |
| |
| schemaStorage.start(); |
| |
| return SchemaRegistryServiceWithSchemaDataValidator.of( |
| new SchemaRegistryServiceImpl(schemaStorage, checkers)); |
| } catch (Exception e) { |
| log.warn("Unable to create schema registry storage, defaulting to empty storage: {}", e); |
| } |
| return new DefaultSchemaRegistryService(); |
| } |
| |
| void close() throws Exception; |
| } |