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add gateway ip priority load balancer
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107 changes: 107 additions & 0 deletions
107
...eway/src/main/java/org/apache/linkis/gateway/springcloud/http/IpPriorityLoadBalancer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* | ||
| * 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.linkis.gateway.springcloud.http; | ||
|
|
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| import org.apache.commons.collections.CollectionUtils; | ||
| import org.apache.commons.lang3.StringUtils; | ||
|
|
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| import org.springframework.beans.factory.ObjectProvider; | ||
| import org.springframework.cloud.client.ServiceInstance; | ||
| import org.springframework.cloud.client.loadbalancer.*; | ||
| import org.springframework.cloud.loadbalancer.core.NoopServiceInstanceListSupplier; | ||
| import org.springframework.cloud.loadbalancer.core.ReactorServiceInstanceLoadBalancer; | ||
| import org.springframework.cloud.loadbalancer.core.SelectedInstanceCallback; | ||
| import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier; | ||
|
|
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| import java.util.List; | ||
| import java.util.Objects; | ||
| import java.util.concurrent.ThreadLocalRandom; | ||
|
|
||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
| import reactor.core.publisher.Mono; | ||
|
|
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| public class IpPriorityLoadBalancer implements ReactorServiceInstanceLoadBalancer { | ||
|
|
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| private static final Logger logger = LoggerFactory.getLogger(IpPriorityLoadBalancer.class); | ||
|
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| private final String serviceId; | ||
| private final ObjectProvider<ServiceInstanceListSupplier> serviceInstanceListSupplierProvider; | ||
|
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| public IpPriorityLoadBalancer( | ||
| String serviceId, | ||
| ObjectProvider<ServiceInstanceListSupplier> serviceInstanceListSupplierProvider) { | ||
| this.serviceId = serviceId; | ||
| this.serviceInstanceListSupplierProvider = serviceInstanceListSupplierProvider; | ||
| } | ||
|
|
||
| @Override | ||
| public Mono<Response<ServiceInstance>> choose(Request request) { | ||
| List<String> clientIpList = | ||
| ((RequestDataContext) request.getContext()) | ||
| .getClientRequest() | ||
| .getHeaders() | ||
| .get("client-ip"); | ||
| String clientIp = CollectionUtils.isNotEmpty(clientIpList) ? clientIpList.get(0) : null; | ||
| ServiceInstanceListSupplier supplier = | ||
| serviceInstanceListSupplierProvider.getIfAvailable(NoopServiceInstanceListSupplier::new); | ||
| return supplier | ||
| .get(request) | ||
| .next() | ||
| .map(serviceInstances -> processInstanceResponse(supplier, serviceInstances, clientIp)); | ||
| } | ||
|
|
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| private Response<ServiceInstance> processInstanceResponse( | ||
| ServiceInstanceListSupplier supplier, | ||
| List<ServiceInstance> serviceInstances, | ||
| String clientIp) { | ||
| Response<ServiceInstance> serviceInstanceResponse = | ||
| getInstanceResponse(serviceInstances, clientIp); | ||
| if (supplier instanceof SelectedInstanceCallback && serviceInstanceResponse.hasServer()) { | ||
| ((SelectedInstanceCallback) supplier) | ||
| .selectedServiceInstance(serviceInstanceResponse.getServer()); | ||
| } | ||
| return serviceInstanceResponse; | ||
| } | ||
|
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| private Response<ServiceInstance> getInstanceResponse( | ||
| List<ServiceInstance> instances, String clientIp) { | ||
| if (instances.isEmpty()) { | ||
| logger.warn("No servers available for service: " + serviceId); | ||
| return new EmptyResponse(); | ||
| } | ||
| if (StringUtils.isEmpty(clientIp)) { | ||
| return new DefaultResponse( | ||
| instances.get(ThreadLocalRandom.current().nextInt(instances.size()))); | ||
| } | ||
| String[] ipAndPort = clientIp.split(":"); | ||
| if (ipAndPort.length != 2) { | ||
| return new DefaultResponse( | ||
| instances.get(ThreadLocalRandom.current().nextInt(instances.size()))); | ||
| } | ||
| ServiceInstance chooseInstance = null; | ||
| for (ServiceInstance instance : instances) { | ||
| if (Objects.equals(ipAndPort[0], instance.getHost()) | ||
| && Objects.equals(ipAndPort[1], String.valueOf(instance.getPort()))) { | ||
| return new DefaultResponse(instance); | ||
| } | ||
| } | ||
| return new DefaultResponse( | ||
| instances.get(ThreadLocalRandom.current().nextInt(instances.size()))); | ||
| } | ||
| } |
35 changes: 35 additions & 0 deletions
35
...ava/org/apache/linkis/gateway/springcloud/http/LinkisLoadBalancerClientConfiguration.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| /* | ||
| * 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.linkis.gateway.springcloud.http; | ||
|
|
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| import org.springframework.cloud.client.ServiceInstance; | ||
| import org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer; | ||
| import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier; | ||
| import org.springframework.cloud.loadbalancer.support.LoadBalancerClientFactory; | ||
| import org.springframework.context.annotation.Bean; | ||
| import org.springframework.core.env.Environment; | ||
|
|
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| public class LinkisLoadBalancerClientConfiguration { | ||
| @Bean | ||
| public ReactorLoadBalancer<ServiceInstance> customLoadBalancer( | ||
| Environment environment, LoadBalancerClientFactory loadBalancerClientFactory) { | ||
| String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME); | ||
| return new IpPriorityLoadBalancer( | ||
| name, loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class)); | ||
| } | ||
| } |