fix:fix route not refreshing bug when first instance of one service up. (#174)
Haotian Zhang
3 years ago
committed by
GitHub
parent
249d1223b1
commit
4fe8602c74
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package com.tencent.cloud.polaris.discovery.refresh;
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import java.util.concurrent.Executors;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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import com.tencent.cloud.polaris.discovery.PolarisDiscoveryHandler;
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import com.tencent.polaris.client.util.NamedThreadFactory;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.boot.context.event.ApplicationReadyEvent;
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import org.springframework.cloud.client.discovery.event.HeartbeatEvent;
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import org.springframework.context.ApplicationEventPublisher;
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import org.springframework.context.ApplicationEventPublisherAware;
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import org.springframework.context.ApplicationListener;
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import static com.tencent.cloud.polaris.discovery.refresh.PolarisServiceStatusChangeListener.INDEX;
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/**
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* Begin refresh when application is ready.
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*
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* @author Haotian Zhang
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*/
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public class PolarisRefreshApplicationReadyEventListener implements ApplicationListener<ApplicationReadyEvent>, ApplicationEventPublisherAware {
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private static final Logger LOG = LoggerFactory.getLogger(PolarisRefreshConfiguration.class);
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private static final int DELAY = 60;
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private final PolarisDiscoveryHandler polarisDiscoveryHandler;
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private final PolarisServiceStatusChangeListener polarisServiceStatusChangeListener;
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private final ScheduledExecutorService refreshExecutor;
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private ApplicationEventPublisher publisher;
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public PolarisRefreshApplicationReadyEventListener(PolarisDiscoveryHandler polarisDiscoveryHandler, PolarisServiceStatusChangeListener polarisServiceStatusChangeListener) {
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this.polarisDiscoveryHandler = polarisDiscoveryHandler;
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this.polarisServiceStatusChangeListener = polarisServiceStatusChangeListener;
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this.refreshExecutor = Executors.newSingleThreadScheduledExecutor(
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new NamedThreadFactory("polaris-service-refresh"));
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}
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@Override
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public void onApplicationEvent(ApplicationReadyEvent event) {
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// Register service change listener.
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polarisDiscoveryHandler.getSdkContext().getExtensions().getLocalRegistry()
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.registerResourceListener(polarisServiceStatusChangeListener);
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// Begin scheduled refresh thread.
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refresh();
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}
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/**
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* Start the refresh thread.
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*/
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public void refresh() {
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refreshExecutor.scheduleWithFixedDelay(() -> {
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try {
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// Trigger reload of gateway route cache.
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this.publisher.publishEvent(new HeartbeatEvent(this, INDEX.getAndIncrement()));
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}
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catch (Exception e) {
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LOG.error("refresh polaris service error.", e);
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}
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}, DELAY, DELAY, TimeUnit.SECONDS);
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}
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@Override
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public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
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this.publisher = applicationEventPublisher;
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}
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}
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package com.tencent.cloud.polaris.discovery.refresh;
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import com.tencent.cloud.polaris.context.ConditionalOnPolarisEnabled;
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import com.tencent.cloud.polaris.discovery.PolarisDiscoveryHandler;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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/**
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* Configuration for listening the change of service status.
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*
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* @author Haotian Zhang
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*/
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@Configuration(proxyBeanMethods = false)
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@ConditionalOnPolarisEnabled
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public class PolarisRefreshConfiguration {
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@Bean
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@ConditionalOnMissingBean
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public PolarisServiceStatusChangeListener polarisServiceChangeListener() {
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return new PolarisServiceStatusChangeListener();
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}
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@Bean
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@ConditionalOnMissingBean
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public PolarisRefreshApplicationReadyEventListener polarisServiceStatusApplicationReadyEventListener(
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PolarisDiscoveryHandler polarisDiscoveryHandler,
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PolarisServiceStatusChangeListener polarisServiceStatusChangeListener) {
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return new PolarisRefreshApplicationReadyEventListener(polarisDiscoveryHandler, polarisServiceStatusChangeListener);
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}
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}
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package com.tencent.cloud.polaris.discovery.refresh;
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import java.util.Set;
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import java.util.concurrent.atomic.AtomicLong;
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import java.util.stream.Collectors;
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import com.google.common.collect.Sets;
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import com.tencent.polaris.api.plugin.registry.AbstractResourceEventListener;
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import com.tencent.polaris.api.pojo.RegistryCacheValue;
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import com.tencent.polaris.api.pojo.ServiceEventKey;
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import com.tencent.polaris.client.pojo.ServiceInstancesByProto;
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import com.tencent.polaris.client.pojo.ServicesByProto;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.cloud.client.discovery.event.HeartbeatEvent;
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import org.springframework.context.ApplicationEventPublisher;
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import org.springframework.context.ApplicationEventPublisherAware;
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import org.springframework.util.CollectionUtils;
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/**
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* Change listener of Polaris service info. When service info is created or deleted, or, instance of service is from 0 to
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*
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* @author Haotian Zhang
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*/
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public class PolarisServiceStatusChangeListener extends AbstractResourceEventListener implements ApplicationEventPublisherAware {
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/**
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* Index of service info status.
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*/
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public static final AtomicLong INDEX = new AtomicLong(0);
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private static final Logger LOG = LoggerFactory.getLogger(PolarisServiceStatusChangeListener.class);
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private ApplicationEventPublisher publisher;
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@Override
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public void onResourceUpdated(ServiceEventKey svcEventKey, RegistryCacheValue oldValue,
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RegistryCacheValue newValue) {
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if (newValue.getEventType() == ServiceEventKey.EventType.SERVICE) {
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if (oldValue instanceof ServicesByProto && newValue instanceof ServicesByProto) {
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LOG.debug("receive service={} change event", svcEventKey);
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Set<String> oldServiceInfoSet = ((ServicesByProto) oldValue).getServices().stream()
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.map(i -> i.getNamespace() + "::" + i.getService()).collect(Collectors.toSet());
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Set<String> newServiceInfoSet = ((ServicesByProto) newValue).getServices().stream()
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.map(i -> i.getNamespace() + "::" + i.getService()).collect(Collectors.toSet());
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Sets.SetView<String> addServiceInfoSetView = Sets.difference(newServiceInfoSet, oldServiceInfoSet);
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Sets.SetView<String> deleteServiceInfoSetView = Sets.difference(oldServiceInfoSet, newServiceInfoSet);
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if (addServiceInfoSetView.isEmpty() && deleteServiceInfoSetView.isEmpty()) {
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return;
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}
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LOG.info("Service status is update. Add service of {}. Delete service of {}", addServiceInfoSetView, deleteServiceInfoSetView);
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// Trigger reload of gateway route cache.
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this.publisher.publishEvent(new HeartbeatEvent(this, INDEX.getAndIncrement()));
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}
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}
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else if (newValue.getEventType() == ServiceEventKey.EventType.INSTANCE) {
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if (oldValue instanceof ServiceInstancesByProto && newValue instanceof ServiceInstancesByProto) {
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LOG.debug("receive service instances={} change event", svcEventKey);
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ServiceInstancesByProto oldIns = (ServiceInstancesByProto) oldValue;
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ServiceInstancesByProto newIns = (ServiceInstancesByProto) newValue;
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if ((CollectionUtils.isEmpty(oldIns.getInstances()) && !CollectionUtils.isEmpty(newIns.getInstances())) ||
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(!CollectionUtils.isEmpty(oldIns.getInstances()) && CollectionUtils.isEmpty(newIns.getInstances()))) {
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LOG.info("Service status of {} is update.", newIns.getService());
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// Trigger reload of gateway route cache.
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this.publisher.publishEvent(new HeartbeatEvent(this, INDEX.getAndIncrement()));
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}
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}
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}
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}
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@Override
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public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
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this.publisher = applicationEventPublisher;
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}
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}
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@ -1,62 +0,0 @@
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package com.tencent.cloud.polaris.registry;
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import java.util.Set;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.stream.Collectors;
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import com.google.common.collect.Sets;
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import com.tencent.polaris.api.plugin.registry.AbstractResourceEventListener;
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import com.tencent.polaris.api.pojo.RegistryCacheValue;
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import com.tencent.polaris.api.pojo.ServiceEventKey;
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import com.tencent.polaris.client.pojo.ServicesByProto;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.cloud.client.discovery.event.HeartbeatEvent;
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import org.springframework.context.ApplicationEventPublisher;
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import org.springframework.context.ApplicationEventPublisherAware;
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/**
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* Change listener of Polaris service info.
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*
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* @author Haotian Zhang
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*/
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public class PolarisServiceChangeListener extends AbstractResourceEventListener implements ApplicationEventPublisherAware {
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private static final Logger LOG = LoggerFactory.getLogger(PolarisServiceChangeListener.class);
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private static final AtomicInteger INDEX = new AtomicInteger(0);
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private ApplicationEventPublisher publisher;
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@Override
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public void onResourceUpdated(ServiceEventKey svcEventKey, RegistryCacheValue oldValue,
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RegistryCacheValue newValue) {
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if (newValue.getEventType() != ServiceEventKey.EventType.SERVICE) {
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return;
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}
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if (oldValue instanceof ServicesByProto && newValue instanceof ServicesByProto) {
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LOG.debug("receive service={} change event", svcEventKey);
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Set<String> oldServiceInfoSet = ((ServicesByProto) oldValue).getServices().stream()
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.map(i -> i.getNamespace() + "::" + i.getService()).collect(Collectors.toSet());
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Set<String> newServiceInfoSet = ((ServicesByProto) newValue).getServices().stream()
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.map(i -> i.getNamespace() + "::" + i.getService()).collect(Collectors.toSet());
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Sets.SetView<String> addServiceInfoSetView = Sets.difference(newServiceInfoSet, oldServiceInfoSet);
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Sets.SetView<String> deleteServiceInfoSetView = Sets.difference(oldServiceInfoSet, newServiceInfoSet);
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if (addServiceInfoSetView.isEmpty() && deleteServiceInfoSetView.isEmpty()) {
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return;
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}
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LOG.info("Service info is update. Add service of {}. Delete service of {}", addServiceInfoSetView, deleteServiceInfoSetView);
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// Trigger reload of gateway route cache.
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this.publisher.publishEvent(new HeartbeatEvent(this, INDEX.getAndIncrement()));
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}
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}
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@Override
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public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
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this.publisher = applicationEventPublisher;
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}
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}
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