| /* |
| * 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.dubbo.metadata.extension.rest.annotation.processing; |
| |
| import org.apache.dubbo.common.utils.JsonUtils; |
| import org.apache.dubbo.metadata.annotation.processing.ClassPathMetadataStorage; |
| import org.apache.dubbo.metadata.extension.rest.api.ServiceRestMetadata; |
| |
| import javax.annotation.processing.ProcessingEnvironment; |
| import java.io.IOException; |
| import java.util.Set; |
| |
| import static org.apache.dubbo.metadata.extension.rest.api.RestMetadataConstants.SERVICE_REST_METADATA_RESOURCE_PATH; |
| |
| |
| /** |
| * The storage for {@link ServiceRestMetadata} |
| */ |
| public class ServiceRestMetadataStorage { |
| |
| private final ClassPathMetadataStorage storage; |
| |
| public ServiceRestMetadataStorage(ProcessingEnvironment processingEnv) { |
| this.storage = new ClassPathMetadataStorage(processingEnv); |
| } |
| |
| public void append(Set<ServiceRestMetadata> serviceRestMetadata) throws IOException { |
| // Add all existed ServiceRestMetadata |
| storage.read(SERVICE_REST_METADATA_RESOURCE_PATH, reader -> { |
| try { |
| StringBuilder stringBuilder = new StringBuilder(); |
| char[] buf = new char[1024]; |
| int len; |
| while ((len = reader.read(buf)) != -1) { |
| stringBuilder.append(buf, 0, len); |
| } |
| return JsonUtils.toJavaList(stringBuilder.toString(), ServiceRestMetadata.class); |
| } catch (IOException e) { |
| return null; |
| } |
| }) |
| .ifPresent(serviceRestMetadata::addAll); |
| write(serviceRestMetadata); |
| } |
| |
| public void write(Set<ServiceRestMetadata> serviceRestMetadata) throws IOException { |
| if (serviceRestMetadata.isEmpty()) { |
| return; |
| } |
| storage.write(() -> JsonUtils.toJson(serviceRestMetadata), SERVICE_REST_METADATA_RESOURCE_PATH); |
| } |
| } |