-
Notifications
You must be signed in to change notification settings - Fork 2.2k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Nacos support application discover (#812)
- Loading branch information
Showing
4 changed files
with
197 additions
and
7 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
170 changes: 170 additions & 0 deletions
170
...erver/src/main/java/org/apache/dubbo/admin/registry/mapping/impl/NacosServiceMapping.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,170 @@ | ||
| /* | ||
| * 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.dubbo.admin.registry.mapping.impl; | ||
|
|
||
| import org.apache.dubbo.admin.registry.mapping.ServiceMapping; | ||
| import org.apache.dubbo.common.URL; | ||
| import org.apache.dubbo.common.logger.Logger; | ||
| import org.apache.dubbo.common.logger.LoggerFactory; | ||
| import org.apache.dubbo.common.utils.ConcurrentHashSet; | ||
| import org.apache.dubbo.common.utils.StringUtils; | ||
| import org.apache.dubbo.metadata.MappingChangedEvent; | ||
| import org.apache.dubbo.metadata.MappingListener; | ||
| import org.apache.dubbo.registry.nacos.NacosNamingServiceWrapper; | ||
| import org.apache.dubbo.registry.nacos.util.NacosNamingServiceUtils; | ||
|
|
||
| import com.alibaba.nacos.api.common.Constants; | ||
| import com.alibaba.nacos.api.exception.NacosException; | ||
| import com.alibaba.nacos.api.naming.pojo.ListView; | ||
| import com.google.common.collect.Sets; | ||
|
|
||
| import java.util.Arrays; | ||
| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.concurrent.ScheduledExecutorService; | ||
| import java.util.concurrent.TimeUnit; | ||
|
|
||
| import static com.alibaba.nacos.api.PropertyKeyConst.NAMING_LOAD_CACHE_AT_START; | ||
| import static org.apache.dubbo.common.constants.RegistryConstants.CONFIGURATORS_CATEGORY; | ||
| import static org.apache.dubbo.common.constants.RegistryConstants.CONSUMERS_CATEGORY; | ||
| import static org.apache.dubbo.common.constants.RegistryConstants.PROVIDERS_CATEGORY; | ||
| import static org.apache.dubbo.common.constants.RegistryConstants.ROUTERS_CATEGORY; | ||
|
|
||
| /** | ||
| * Nacos not support batch listen config feature. Therefore, regularly query the service list instead of notification | ||
| */ | ||
| public class NacosServiceMapping implements ServiceMapping { | ||
|
|
||
| /** | ||
| * All 2.x supported categories | ||
| */ | ||
| private static final List<String> ALL_SUPPORTED_CATEGORIES = Arrays.asList( | ||
| PROVIDERS_CATEGORY, | ||
| CONSUMERS_CATEGORY, | ||
| ROUTERS_CATEGORY, | ||
| CONFIGURATORS_CATEGORY | ||
| ); | ||
|
|
||
| /** | ||
| * The separator for service name | ||
| * Change a constant to be configurable, it's designed for Windows file name that is compatible with old | ||
| * Nacos binary release(< 0.6.1) | ||
| */ | ||
| private static final String SERVICE_NAME_SEPARATOR = System.getProperty("nacos.service.name.separator", ":"); | ||
|
|
||
| private static final long LOOKUP_INTERVAL = Long.getLong("nacos.service.names.lookup.interval", 30); | ||
|
|
||
| private ScheduledExecutorService scheduledExecutorService; | ||
|
|
||
| private final Set<MappingListener> listeners = new ConcurrentHashSet<>(); | ||
|
|
||
| private static final int PAGINATION_SIZE = 100; | ||
|
|
||
| private NacosNamingServiceWrapper namingService; | ||
|
|
||
| private Set<String> anyServices = new HashSet<>(); | ||
|
|
||
| private static final Logger LOGGER = LoggerFactory.getLogger(NacosServiceMapping.class); | ||
|
|
||
| @Override | ||
| public void init(URL url) { | ||
| url.addParameter(NAMING_LOAD_CACHE_AT_START, "false"); | ||
| namingService = NacosNamingServiceUtils.createNamingService(url); | ||
| scheduledExecutorService = Executors.newSingleThreadScheduledExecutor(); | ||
| listenerAll(); | ||
| } | ||
|
|
||
| @Override | ||
| public void listenerAll() { | ||
|
|
||
| try { | ||
| anyServices = getAllServiceNames(); | ||
| } catch (Exception e) { | ||
| LOGGER.error("Get nacos all services fail ", e); | ||
| } | ||
| for (String service : anyServices) { | ||
| notifyMappingChangedEvent(service); | ||
| } | ||
| scheduledExecutorService.scheduleAtFixedRate(() -> { | ||
| try { | ||
| Set<String> serviceNames = getAllServiceNames(); | ||
| for (String serviceName : serviceNames) { | ||
| if (anyServices.add(serviceName)) { | ||
| notifyMappingChangedEvent(serviceName); | ||
| } | ||
| } | ||
| } catch (Exception e) { | ||
| LOGGER.error("Get nacos all services fail ", e); | ||
| } | ||
|
|
||
| }, LOOKUP_INTERVAL, LOOKUP_INTERVAL, TimeUnit.SECONDS); | ||
| } | ||
|
|
||
| private Set<String> getAllServiceNames() throws NacosException { | ||
|
|
||
| Set<String> serviceNames = new HashSet<>(); | ||
| int pageIndex = 1; | ||
| ListView<String> listView = namingService.getServicesOfServer(pageIndex, PAGINATION_SIZE, | ||
| Constants.DEFAULT_GROUP); | ||
| // First page data | ||
| List<String> firstPageData = listView.getData(); | ||
| // Append first page into list | ||
| serviceNames.addAll(firstPageData); | ||
| // the total count | ||
| int count = listView.getCount(); | ||
| // the number of pages | ||
| int pageNumbers = count / PAGINATION_SIZE; | ||
| int remainder = count % PAGINATION_SIZE; | ||
| // remain | ||
| if (remainder > 0) { | ||
| pageNumbers += 1; | ||
| } | ||
| // If more than 1 page | ||
| while (pageIndex < pageNumbers) { | ||
| listView = namingService.getServicesOfServer(++pageIndex, PAGINATION_SIZE, Constants.DEFAULT_GROUP); | ||
| serviceNames.addAll(listView.getData()); | ||
| } | ||
|
|
||
| return serviceNames; | ||
| } | ||
|
|
||
| private void notifyMappingChangedEvent(String service) { | ||
| if (StringUtils.isBlank(service)) { | ||
| return; | ||
| } | ||
| for (String category : ALL_SUPPORTED_CATEGORIES) { | ||
| String prefix = category + SERVICE_NAME_SEPARATOR; | ||
| if (service.startsWith(prefix)) { | ||
| return; | ||
| } | ||
| } | ||
| MappingChangedEvent event = new MappingChangedEvent(null, Sets.newHashSet(service)); | ||
| for (MappingListener listener : listeners) { | ||
| listener.onEvent(event); | ||
| } | ||
| } | ||
|
|
||
|
|
||
| @Override | ||
| public void addMappingListener(MappingListener listener) { | ||
| listeners.add(listener); | ||
| } | ||
|
|
||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
3 changes: 2 additions & 1 deletion
3
.../resources/META-INF/dubbo/internal/org.apache.dubbo.admin.registry.mapping.ServiceMapping
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,2 @@ | ||
| zookeeper=org.apache.dubbo.admin.registry.mapping.impl.ZookeeperServiceMapping | ||
| zookeeper=org.apache.dubbo.admin.registry.mapping.impl.ZookeeperServiceMapping | ||
| nacos=org.apache.dubbo.admin.registry.mapping.impl.NacosServiceMapping |