dubbo ClassPathServiceRestMetadataReader 源码
dubbo ClassPathServiceRestMetadataReader 代码
文件路径：/dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/rest/ClassPathServiceRestMetadataReader.java
/*
* 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.rest;
import org.apache.dubbo.common.utils.IOUtils;
import org.apache.dubbo.common.utils.JsonUtils;
import java.io.InputStream;
import java.net.URL;
import java.util.Enumeration;
import java.util.LinkedList;
import java.util.List;
import static java.util.Collections.unmodifiableList;
import static org.apache.dubbo.common.function.ThrowableAction.execute;
import static org.apache.dubbo.metadata.rest.RestMetadataConstants.METADATA_ENCODING;
import static org.apache.dubbo.metadata.rest.RestMetadataConstants.SERVICE_REST_METADATA_RESOURCE_PATH;
/**
* Class-Path based {@link ServiceRestMetadataReader} implementation
*
* @see ServiceRestMetadataReader
* @since 2.7.6
*/
public class ClassPathServiceRestMetadataReader implements ServiceRestMetadataReader {
private final String serviceRestMetadataJsonResourcePath;
public ClassPathServiceRestMetadataReader() {
this(SERVICE_REST_METADATA_RESOURCE_PATH);
}
public ClassPathServiceRestMetadataReader(String serviceRestMetadataJsonResourcePath) {
this.serviceRestMetadataJsonResourcePath = serviceRestMetadataJsonResourcePath;
}
@Override
public List<ServiceRestMetadata> read() {
List<ServiceRestMetadata> serviceRestMetadataList = new LinkedList<>();
ClassLoader classLoader = getClass().getClassLoader();
execute(() -> {
Enumeration<URL> resources = classLoader.getResources(serviceRestMetadataJsonResourcePath);
while (resources.hasMoreElements()) {
URL resource = resources.nextElement();
InputStream inputStream = resource.openStream();
String json = IOUtils.read(inputStream, METADATA_ENCODING);
serviceRestMetadataList.addAll(JsonUtils.getJson().toJavaList(json, ServiceRestMetadata.class));
}
});
return unmodifiableList(serviceRestMetadataList);
}
}
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