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/*
* 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.registry.client.metadata;
import org.apache.dubbo.common.URL;
import org.apache.dubbo.common.config.ConfigurationUtils;
import org.apache.dubbo.common.config.configcenter.ConfigItem;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.common.utils.CollectionUtils;
import org.apache.dubbo.common.utils.StringUtils;
import org.apache.dubbo.metadata.AbstractServiceNameMapping;
import org.apache.dubbo.metadata.MappingListener;
import org.apache.dubbo.metadata.MetadataService;
import org.apache.dubbo.metadata.report.MetadataReport;
import org.apache.dubbo.metadata.report.MetadataReportInstance;
import org.apache.dubbo.registry.client.RegistryClusterIdentifier;
import org.apache.dubbo.rpc.model.ApplicationModel;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ThreadLocalRandom;
import static org.apache.dubbo.common.constants.CommonConstants.COMMA_SEPARATOR;
import static org.apache.dubbo.common.constants.CommonConstants.DEFAULT_KEY;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.COMMON_PROPERTY_TYPE_MISMATCH;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.INTERNAL_ERROR;
import static org.apache.dubbo.registry.Constants.CAS_RETRY_TIMES_KEY;
import static org.apache.dubbo.registry.Constants.CAS_RETRY_WAIT_TIME_KEY;
import static org.apache.dubbo.registry.Constants.DEFAULT_CAS_RETRY_TIMES;
import static org.apache.dubbo.registry.Constants.DEFAULT_CAS_RETRY_WAIT_TIME;
public class MetadataServiceNameMapping extends AbstractServiceNameMapping {
private final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(getClass());
private static final List IGNORED_SERVICE_INTERFACES =
Collections.singletonList(MetadataService.class.getName());
private final int casRetryTimes;
private final int casRetryWaitTime;
protected MetadataReportInstance metadataReportInstance;
public MetadataServiceNameMapping(ApplicationModel applicationModel) {
super(applicationModel);
metadataReportInstance = applicationModel.getBeanFactory().getBean(MetadataReportInstance.class);
casRetryTimes = ConfigurationUtils.getGlobalConfiguration(applicationModel)
.getInt(CAS_RETRY_TIMES_KEY, DEFAULT_CAS_RETRY_TIMES);
casRetryWaitTime = ConfigurationUtils.getGlobalConfiguration(applicationModel)
.getInt(CAS_RETRY_WAIT_TIME_KEY, DEFAULT_CAS_RETRY_WAIT_TIME);
}
@Override
public boolean hasValidMetadataCenter() {
return !CollectionUtils.isEmpty(
applicationModel.getApplicationConfigManager().getMetadataConfigs());
}
/**
* Simply register to all metadata center
*/
@Override
public boolean map(URL url) {
if (CollectionUtils.isEmpty(
applicationModel.getApplicationConfigManager().getMetadataConfigs())) {
logger.warn(
COMMON_PROPERTY_TYPE_MISMATCH, "", "", "No valid metadata config center found for mapping report.");
return false;
}
String serviceInterface = url.getServiceInterface();
if (IGNORED_SERVICE_INTERFACES.contains(serviceInterface)) {
return true;
}
boolean result = true;
for (Map.Entry entry :
metadataReportInstance.getMetadataReports(true).entrySet()) {
MetadataReport metadataReport = entry.getValue();
String appName = applicationModel.getApplicationName();
try {
if (metadataReport.registerServiceAppMapping(serviceInterface, appName, url)) {
// MetadataReport support directly register service-app mapping
continue;
}
boolean succeeded = false;
int currentRetryTimes = 1;
String newConfigContent = appName;
do {
ConfigItem configItem = metadataReport.getConfigItem(serviceInterface, DEFAULT_MAPPING_GROUP);
String oldConfigContent = configItem.getContent();
if (StringUtils.isNotEmpty(oldConfigContent)) {
String[] oldAppNames = oldConfigContent.split(",");
if (oldAppNames.length > 0) {
for (String oldAppName : oldAppNames) {
if (StringUtils.trim(oldAppName).equals(appName)) {
succeeded = true;
break;
}
}
}
if (succeeded) {
break;
}
newConfigContent = oldConfigContent + COMMA_SEPARATOR + appName;
}
succeeded = metadataReport.registerServiceAppMapping(
serviceInterface, DEFAULT_MAPPING_GROUP, newConfigContent, configItem.getTicket());
if (!succeeded) {
int waitTime = ThreadLocalRandom.current().nextInt(casRetryWaitTime);
logger.info("Failed to publish service name mapping to metadata center by cas operation. "
+ "Times: "
+ currentRetryTimes + ". " + "Next retry delay: "
+ waitTime + ". " + "Service Interface: "
+ serviceInterface + ". " + "Origin Content: "
+ oldConfigContent + ". " + "Ticket: "
+ configItem.getTicket() + ". " + "Excepted context: "
+ newConfigContent);
Thread.sleep(waitTime);
}
} while (!succeeded && currentRetryTimes++ <= casRetryTimes);
if (!succeeded) {
result = false;
}
} catch (Exception e) {
result = false;
logger.warn(
INTERNAL_ERROR,
"unknown error in registry module",
"",
"Failed registering mapping to remote." + metadataReport,
e);
}
}
return result;
}
@Override
public Set get(URL url) {
String serviceInterface = url.getServiceInterface();
String registryCluster = getRegistryCluster(url);
MetadataReport metadataReport = metadataReportInstance.getMetadataReport(registryCluster);
if (metadataReport == null) {
return Collections.emptySet();
}
return metadataReport.getServiceAppMapping(serviceInterface, url);
}
@Override
public Set getAndListen(URL url, MappingListener mappingListener) {
String serviceInterface = url.getServiceInterface();
// randomly pick one metadata report is ok for it's guaranteed all metadata report will have the same mapping
// data.
String registryCluster = getRegistryCluster(url);
MetadataReport metadataReport = metadataReportInstance.getMetadataReport(registryCluster);
if (metadataReport == null) {
return Collections.emptySet();
}
return metadataReport.getServiceAppMapping(serviceInterface, mappingListener, url);
}
@Override
protected void removeListener(URL url, MappingListener mappingListener) {
String serviceInterface = url.getServiceInterface();
// randomly pick one metadata report is ok for it's guaranteed each metadata report will have the same mapping
// content.
String registryCluster = getRegistryCluster(url);
MetadataReport metadataReport = metadataReportInstance.getMetadataReport(registryCluster);
if (metadataReport == null) {
return;
}
metadataReport.removeServiceAppMappingListener(serviceInterface, mappingListener);
}
protected String getRegistryCluster(URL url) {
String registryCluster = RegistryClusterIdentifier.getExtension(url).providerKey(url);
if (registryCluster == null) {
registryCluster = DEFAULT_KEY;
}
int i = registryCluster.indexOf(",");
if (i > 0) {
registryCluster = registryCluster.substring(0, i);
}
return registryCluster;
}
}
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