本篇文章给大家分享的是有关春云的ConsulServer怎么用,小编觉得挺实用的,因此分享给大家学习,希望大家阅读完这篇文章后可以有所收获,话不多说,跟着小编一起来看看吧。
序
本文主要研究一下春云的ConsulServer
ConsulServer
spring-cloud-consult-discovery-2。1 .2 .发布源。罐子!/org/spring framework/cloud/consult/discovery/consul server。爪哇
公共类consultlserverextendserver { 0
privatefinitimetainfometa信息;
privatefilehealthserviceservice;
privatefinalMapString,Stringmetadata
公共使用者服务器(financehealthservicehealth service){ 0
super(findHost(healthService),healthService.getService().getPort());
this.service=healthService
这个。metadata=consulserverrutils。getmetadata(这个。服务);
这个。元信息=新元信息(){ 0
@覆盖
public stringgetappname(){ 0
returnconsumerserver。这个。服务。getservice().getServiCe();
}
@覆盖
public stringgetservergroup(){ 0
returngetMetadata().get(' group ');
}
@覆盖
public stringgetserviceidfordiscol(){ 0
返回空
}
@覆盖
public stringgetinstanceid(){ 0
returnconsumerserver。这个。服务。getservice().getId();
}
};
setAlive(isPassingChecks());
}
@覆盖
publicategameinfogetmeta info(){ 0
returnthis.metaInfo
}
公共卫生服务gethealth service(){ 0
归还这个。服务;
}
publicMapString,StringGetMetadata(){ 0
返回this.metadata
}
public booleanispassingchecks(){ 0
(检查:这个。服务。getchecks()){ 0
if(check.getStatus()!=检查检查状态。通过){ 0
returnfalse
}
}
返回真
}
}ConsulServer继承了com。网飞。负载平衡器。服务器;其构造器会调用isPassingChecks方法来setAlive,它通过健康服务来获取检查的状态
ConsulServerList
spring-cloud-consult-discovery-2。1 .2 .发布源。罐子!/org/spring framework/cloud/consult/discovery/consulserverlist。爪哇
publicclassCon
sulServerList extends AbstractServerList<ConsulServer> {
private final ConsulClient client;
private final ConsulDiscoveryProperties properties;
private String serviceId;
public ConsulServerList(ConsulClient client, ConsulDiscoveryProperties properties) {
this.client = client;
this.properties = properties;
}
protected ConsulClient getClient() {
return this.client;
}
protected ConsulDiscoveryProperties getProperties() {
return this.properties;
}
protected String getServiceId() {
return this.serviceId;
}
@Override
public void initWithNiwsConfig(IClientConfig clientConfig) {
this.serviceId = clientConfig.getClientName();
}
@Override
public List<ConsulServer> getInitialListOfServers() {
return getServers();
}
@Override
public List<ConsulServer> getUpdatedListOfServers() {
return getServers();
}
private List<ConsulServer> getServers() {
if (this.client == null) {
return Collections.emptyList();
}
String tag = getTag(); // null is ok
Response<List<HealthService>> response = this.client.getHealthServices(
this.serviceId, tag, this.properties.isQueryPassing(),
createQueryParamsForClientRequest(), this.properties.getAclToken());
if (response.getValue() == null || response.getValue().isEmpty()) {
return Collections.emptyList();
}
return transformResponse(response.getValue());
}
/**
* Transforms the response from Consul in to a list of usable {@link ConsulServer}s.
* @param healthServices the initial list of servers from Consul. Guaranteed to be
* non-empty list
* @return ConsulServer instances
* @see ConsulServer#ConsulServer(HealthService)
*/
protected List<ConsulServer> transformResponse(List<HealthService> healthServices) {
List<ConsulServer> servers = new ArrayList<>();
for (HealthService service : healthServices) {
ConsulServer server = new ConsulServer(service);
if (server.getMetadata()
.containsKey(this.properties.getDefaultZoneMetadataName())) {
server.setZone(server.getMetadata()
.get(this.properties.getDefaultZoneMetadataName()));
}
servers.add(server);
}
return servers;
}
/**
* This method will create the {@link QueryParams} to use when retrieving the services
* from Consul. By default {@link QueryParams#DEFAULT} is used. In case a datacenter
* is specified for the current serviceId {@link QueryParams#datacenter} is set.
* @return an instance of {@link QueryParams}
*/
protected QueryParams createQueryParamsForClientRequest() {
String datacenter = getDatacenter();
if (datacenter != null) {
return new QueryParams(datacenter);
}
return QueryParams.DEFAULT;
}
protected String getTag() {
return this.properties.getQueryTagForService(this.serviceId);
}
protected String getDatacenter() {
return this.properties.getDatacenters().get(this.serviceId);
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("ConsulServerList{");
sb.append("serviceId='").append(this.serviceId).append('\'');
sb.append(", tag=").append(getTag());
sb.append('}');
return sb.toString();
}
}
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ConsulServerList继承了com.netflix.loadbalancer.AbstractServerList;其getInitialListOfServers及getUpdatedListOfServers方法都会调用getServers方法;它通过ConsulClient.getHealthServices来获取指定serviceId的HealthService列表,然后通过transformResponse方法包装为ConsulServer列表
ConsulRibbonClientConfiguration
spring-cloud-consul-discovery-2.1.2.RELEASE-sources.jar!/org/springframework/cloud/consul/discovery/ConsulRibbonClientConfiguration.java
@Configuration public class ConsulRibbonClientConfiguration { protected static final String VALUE_NOT_SET = "__not__set__"; protected static final String DEFAULT_NAMESPACE = "ribbon"; @Autowired private ConsulClient client; @Value("${ribbon.client.name}") private String serviceId = "client"; public ConsulRibbonClientConfiguration() { } public ConsulRibbonClientConfiguration(String serviceId) { this.serviceId = serviceId; } @Bean @ConditionalOnMissingBean public ServerList<?> ribbonServerList(IClientConfig config, ConsulDiscoveryProperties properties) { ConsulServerList serverList = new ConsulServerList(this.client, properties); serverList.initWithNiwsConfig(config); return serverList; } @Bean @ConditionalOnMissingBean public ServerListFilter<Server> ribbonServerListFilter() { return new HealthServiceServerListFilter(); } @Bean @ConditionalOnMissingBean public IPing ribbonPing() { return new ConsulPing(); } @Bean @ConditionalOnMissingBean public ConsulServerIntrospector serverIntrospector() { return new ConsulServerIntrospector(); } @PostConstruct public void preprocess() { setProp(this.serviceId, DeploymentContextBasedVipAddresses.key(), this.serviceId); setProp(this.serviceId, EnableZoneAffinity.key(), "true"); } protected void setProp(String serviceId, String suffix, String value) { // how to set the namespace properly? String key = getKey(serviceId, suffix); DynamicStringProperty property = getProperty(key); if (property.get().equals(VALUE_NOT_SET)) { ConfigurationManager.getConfigInstance().setProperty(key, value); } } protected DynamicStringProperty getProperty(String key) { return DynamicPropertyFactory.getInstance().getStringProperty(key, VALUE_NOT_SET); } protected String getKey(String serviceId, String suffix) { return serviceId + "." + DEFAULT_NAMESPACE + "." + suffix; } }
-
ConsulRibbonClientConfiguration注入了ribbonServerList,其创建的是ConsulServerList
小结
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ConsulServer继承了com.netflix.loadbalancer.Server;其构造器会调用isPassingChecks方法来setAlive,它通过HealthService来获取checks的状态
-
ConsulServerList继承了com.netflix.loadbalancer.AbstractServerList;其getInitialListOfServers及getUpdatedListOfServers方法都会调用getServers方法;它通过ConsulClient.getHealthServices来获取指定serviceId的HealthService列表,然后通过transformResponse方法包装为ConsulServer列表
-
ConsulRibbonClientConfiguration注入了ribbonServerList,其创建的是ConsulServerList
doc
-
ConsulServer
以上就是spring cloud的ConsulServer怎么用,小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注行业资讯频道。
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