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NacosRule code format

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This commit is contained in:
fangjian0423 2019-07-03 16:55:16 +08:00
parent bbf7bdee52
commit 3998ea23f7
1 changed files with 55 additions and 46 deletions
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101
spring-cloud-alibaba-nacos-discovery/src/main/java/org/springframework/cloud/alibaba/nacos/ribbon/NacosRule.java
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@ -1,11 +1,9 @@
package org.springframework.cloud.alibaba.nacos.ribbon; package org.springframework.cloud.alibaba.nacos.ribbon;
import com.alibaba.nacos.api.naming.NamingService; import java.util.List;
import com.alibaba.nacos.api.naming.pojo.Instance; import java.util.Objects;
import com.netflix.client.config.IClientConfig; import java.util.stream.Collectors;
import com.netflix.loadbalancer.AbstractLoadBalancerRule;
import com.netflix.loadbalancer.DynamicServerListLoadBalancer;
import com.netflix.loadbalancer.Server;
import org.apache.commons.lang3.StringUtils; import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger; import org.slf4j.Logger;
import org.slf4j.LoggerFactory; import org.slf4j.LoggerFactory;
@ -13,57 +11,68 @@ import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.alibaba.nacos.NacosDiscoveryProperties; import org.springframework.cloud.alibaba.nacos.NacosDiscoveryProperties;
import org.springframework.util.CollectionUtils; import org.springframework.util.CollectionUtils;
import java.util.List; import com.alibaba.nacos.api.naming.NamingService;
import java.util.Objects; import com.alibaba.nacos.api.naming.pojo.Instance;
import java.util.stream.Collectors;
import com.netflix.client.config.IClientConfig;
import com.netflix.loadbalancer.AbstractLoadBalancerRule;
import com.netflix.loadbalancer.DynamicServerListLoadBalancer;
import com.netflix.loadbalancer.Server;
/** /**
* 支持优先调用同集群实例的ribbon负载均衡规则. * Supports preferentially calling the ribbon load balancing rules of the same cluster
* instance.
* *
* @author itmuch.com * @author itmuch.com
*/ */
public class NacosRule extends AbstractLoadBalancerRule { public class NacosRule extends AbstractLoadBalancerRule {
private static final Logger LOGGER = LoggerFactory.getLogger(NacosRule.class); private static final Logger LOGGER = LoggerFactory.getLogger(NacosRule.class);
@Autowired @Autowired
private NacosDiscoveryProperties nacosDiscoveryProperties; private NacosDiscoveryProperties nacosDiscoveryProperties;
@Override @Override
public Server choose(Object key) { public Server choose(Object key) {
try { try {
String clusterName = this.nacosDiscoveryProperties.getClusterName(); String clusterName = this.nacosDiscoveryProperties.getClusterName();
DynamicServerListLoadBalancer loadBalancer = (DynamicServerListLoadBalancer) getLoadBalancer(); DynamicServerListLoadBalancer loadBalancer = (DynamicServerListLoadBalancer) getLoadBalancer();
String name = loadBalancer.getName(); String name = loadBalancer.getName();
NamingService namingService = this.nacosDiscoveryProperties.namingServiceInstance(); NamingService namingService = this.nacosDiscoveryProperties
List<Instance> instances = namingService.selectInstances(name, true); .namingServiceInstance();
if (CollectionUtils.isEmpty(instances)) { List<Instance> instances = namingService.selectInstances(name, true);
LOGGER.warn("{}服务当前无任何实例", name); if (CollectionUtils.isEmpty(instances)) {
return null; LOGGER.warn("no instance in service {}", name);
} return null;
}
List<Instance> instancesToChoose = instances; List<Instance> instancesToChoose = instances;
if (StringUtils.isNotBlank(clusterName)) { if (StringUtils.isNotBlank(clusterName)) {
List<Instance> sameClusterInstances = instances.stream() List<Instance> sameClusterInstances = instances.stream()
.filter(instance -> Objects.equals(clusterName, instance.getClusterName())) .filter(instance -> Objects.equals(clusterName,
.collect(Collectors.toList()); instance.getClusterName()))
if (!CollectionUtils.isEmpty(sameClusterInstances)) { .collect(Collectors.toList());
instancesToChoose = sameClusterInstances; if (!CollectionUtils.isEmpty(sameClusterInstances)) {
} else { instancesToChoose = sameClusterInstances;
LOGGER.warn("发生跨集群的调用，name = {}, clusterName = {}, instance = {}", name, clusterName, instances); }
} else {
} LOGGER.warn(
"A cross-cluster call occurs，name = {}, clusterName = {}, instance = {}",
name, clusterName, instances);
}
}
Instance instance = ExtendBalancer.getHostByRandomWeight2(instancesToChoose); Instance instance = ExtendBalancer.getHostByRandomWeight2(instancesToChoose);
return new NacosServer(instance); return new NacosServer(instance);
} catch (Exception e) { }
LOGGER.warn("NacosRule发生异常", e); catch (Exception e) {
return null; LOGGER.warn("NacosRule error", e);
} return null;
} }
}
@Override @Override
public void initWithNiwsConfig(IClientConfig iClientConfig) { public void initWithNiwsConfig(IClientConfig iClientConfig) {
} }
} }