dubbo SpringCloudMetadataServiceURLBuilder 源码
dubbo SpringCloudMetadataServiceURLBuilder 代码
文件路径：/dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/client/metadata/SpringCloudMetadataServiceURLBuilder.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.registry.client.metadata;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.utils.JsonUtils;
import org.apache.dubbo.common.utils.StringUtils;
import org.apache.dubbo.registry.client.ServiceInstance;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import static org.apache.dubbo.registry.client.metadata.ServiceInstanceMetadataUtils.METADATA_SERVICE_URLS_PROPERTY_NAME;
/**
* Supporting interaction with Dubbo Spring Cloud at https://github.com/alibaba/spring-cloud-alibaba
* Dubbo Spring Cloud is a Dubbo extension that favours a per instance registry model and exposes metadata service.
*
* @since 2.7.5
*/
public class SpringCloudMetadataServiceURLBuilder implements MetadataServiceURLBuilder {
public static final String NAME = "spring-cloud";
@Override
public List<URL> build(ServiceInstance serviceInstance) {
Map<String, String> metadata = serviceInstance.getMetadata();
String dubboUrlsForJson = metadata.get(METADATA_SERVICE_URLS_PROPERTY_NAME);
if (StringUtils.isBlank(dubboUrlsForJson)) {
return Collections.emptyList();
}
List<String> urlStrings = JsonUtils.getJson().toJavaList(dubboUrlsForJson, String.class);
return urlStrings.stream().map(URL::valueOf).collect(Collectors.toList());
}
}
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