| /* |
| * 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.skywalking.oap.server.webapp; |
| |
| import static java.util.stream.Collectors.toList; |
| import java.net.URI; |
| import java.util.List; |
| import java.util.stream.Stream; |
| import com.linecorp.armeria.client.Endpoint; |
| import com.linecorp.armeria.client.WebClient; |
| import com.linecorp.armeria.client.endpoint.EndpointGroup; |
| import com.linecorp.armeria.client.endpoint.EndpointSelectionStrategy; |
| import com.linecorp.armeria.client.logging.LoggingClient; |
| import com.linecorp.armeria.common.HttpRequest; |
| import com.linecorp.armeria.common.HttpResponse; |
| import com.linecorp.armeria.common.SessionProtocol; |
| import com.linecorp.armeria.server.AbstractHttpService; |
| import com.linecorp.armeria.server.ServiceRequestContext; |
| import lombok.SneakyThrows; |
| |
| public final class ZipkinProxyService extends AbstractHttpService { |
| private final WebClient loadBalancingClient; |
| |
| public ZipkinProxyService(String[] zipkinServices) throws Exception { |
| final List<Endpoint> endpoints = |
| Stream |
| .of(zipkinServices) |
| .map(URI::create) |
| .map(URI::getAuthority) |
| .map(Endpoint::parse) |
| .collect(toList()); |
| loadBalancingClient = newLoadBalancingClient( |
| EndpointGroup.of( |
| EndpointSelectionStrategy.roundRobin(), |
| endpoints)); |
| } |
| |
| @SneakyThrows |
| private static WebClient newLoadBalancingClient(EndpointGroup zipkinGroup) { |
| return WebClient |
| .builder(SessionProtocol.HTTP, zipkinGroup) |
| .decorator(LoggingClient.newDecorator()) |
| .build(); |
| } |
| |
| @Override |
| protected HttpResponse doGet(ServiceRequestContext ctx, HttpRequest req) throws Exception { |
| return loadBalancingClient.execute(req); |
| } |
| } |