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com.alibaba.nacos.client.config.NacosConfigService Maven / Gradle / Ivy
/*
* Copyright 1999-2018 Alibaba Group Holding Ltd.
*
* Licensed 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 com.alibaba.nacos.client.config;
import com.alibaba.nacos.api.PropertyKeyConst;
import com.alibaba.nacos.api.common.Constants;
import com.alibaba.nacos.api.config.ConfigService;
import com.alibaba.nacos.api.config.ConfigType;
import com.alibaba.nacos.api.config.filter.IConfigFilter;
import com.alibaba.nacos.api.config.listener.Listener;
import com.alibaba.nacos.api.exception.NacosException;
import com.alibaba.nacos.client.config.filter.impl.ConfigFilterChainManager;
import com.alibaba.nacos.client.config.filter.impl.ConfigRequest;
import com.alibaba.nacos.client.config.filter.impl.ConfigResponse;
import com.alibaba.nacos.client.config.http.ServerHttpAgent;
import com.alibaba.nacos.client.config.impl.ClientWorker;
import com.alibaba.nacos.client.config.impl.LocalConfigInfoProcessor;
import com.alibaba.nacos.client.config.impl.LocalEncryptedDataKeyProcessor;
import com.alibaba.nacos.client.config.impl.ServerListManager;
import com.alibaba.nacos.client.config.utils.ContentUtils;
import com.alibaba.nacos.client.config.utils.ParamUtils;
import com.alibaba.nacos.client.env.NacosClientProperties;
import com.alibaba.nacos.client.utils.LogUtils;
import com.alibaba.nacos.client.utils.ParamUtil;
import com.alibaba.nacos.client.utils.PreInitUtils;
import com.alibaba.nacos.client.utils.ValidatorUtils;
import com.alibaba.nacos.common.utils.StringUtils;
import org.slf4j.Logger;
import java.util.Collections;
import java.util.Properties;
/**
* Config Impl.
*
* @author Nacos
*/
@SuppressWarnings("PMD.ServiceOrDaoClassShouldEndWithImplRule")
public class NacosConfigService implements ConfigService {
private static final Logger LOGGER = LogUtils.logger(NacosConfigService.class);
private static final String UP = "UP";
private static final String DOWN = "DOWN";
/**
* will be deleted in 2.0 later versions
*/
@Deprecated
ServerHttpAgent agent = null;
/**
* long polling.
*/
private final ClientWorker worker;
private String namespace;
private final ConfigFilterChainManager configFilterChainManager;
public NacosConfigService(Properties properties) throws NacosException {
PreInitUtils.asyncPreLoadCostComponent();
final NacosClientProperties clientProperties = NacosClientProperties.PROTOTYPE.derive(properties);
LOGGER.info(ParamUtil.getInputParameters(clientProperties.asProperties()));
ValidatorUtils.checkInitParam(clientProperties);
initNamespace(clientProperties);
this.configFilterChainManager = new ConfigFilterChainManager(clientProperties.asProperties());
ServerListManager serverListManager = new ServerListManager(clientProperties);
serverListManager.start();
this.worker = new ClientWorker(this.configFilterChainManager, serverListManager, clientProperties);
// will be deleted in 2.0 later versions
agent = new ServerHttpAgent(serverListManager);
}
private void initNamespace(NacosClientProperties properties) {
namespace = ParamUtil.parseNamespace(properties);
properties.setProperty(PropertyKeyConst.NAMESPACE, namespace);
}
@Override
public String getConfig(String dataId, String group, long timeoutMs) throws NacosException {
return getConfigInner(namespace, dataId, group, timeoutMs);
}
@Override
public String getConfigAndSignListener(String dataId, String group, long timeoutMs, Listener listener)
throws NacosException {
group = StringUtils.isBlank(group) ? Constants.DEFAULT_GROUP : group.trim();
ConfigResponse configResponse = worker.getAgent()
.queryConfig(dataId, group, worker.getAgent().getTenant(), timeoutMs, false);
String content = configResponse.getContent();
String encryptedDataKey = configResponse.getEncryptedDataKey();
worker.addTenantListenersWithContent(dataId, group, content, encryptedDataKey,
Collections.singletonList(listener));
// get a decryptContent, fix https://github.com/alibaba/nacos/issues/7039
ConfigResponse cr = new ConfigResponse();
cr.setDataId(dataId);
cr.setGroup(group);
cr.setContent(content);
cr.setEncryptedDataKey(encryptedDataKey);
configFilterChainManager.doFilter(null, cr);
return cr.getContent();
}
@Override
public void addListener(String dataId, String group, Listener listener) throws NacosException {
worker.addTenantListeners(dataId, group, Collections.singletonList(listener));
}
@Override
public boolean publishConfig(String dataId, String group, String content) throws NacosException {
return publishConfig(dataId, group, content, ConfigType.getDefaultType().getType());
}
@Override
public boolean publishConfig(String dataId, String group, String content, String type) throws NacosException {
return publishConfigInner(namespace, dataId, group, null, null, null, content, type, null);
}
@Override
public boolean publishConfigCas(String dataId, String group, String content, String casMd5) throws NacosException {
return publishConfigInner(namespace, dataId, group, null, null, null, content,
ConfigType.getDefaultType().getType(), casMd5);
}
@Override
public boolean publishConfigCas(String dataId, String group, String content, String casMd5, String type)
throws NacosException {
return publishConfigInner(namespace, dataId, group, null, null, null, content, type, casMd5);
}
@Override
public boolean removeConfig(String dataId, String group) throws NacosException {
return removeConfigInner(namespace, dataId, group, null);
}
@Override
public void removeListener(String dataId, String group, Listener listener) {
worker.removeTenantListener(dataId, group, listener);
}
private String getConfigInner(String tenant, String dataId, String group, long timeoutMs) throws NacosException {
group = blank2defaultGroup(group);
ParamUtils.checkKeyParam(dataId, group);
ConfigResponse cr = new ConfigResponse();
cr.setDataId(dataId);
cr.setTenant(tenant);
cr.setGroup(group);
// We first try to use local failover content if exists.
// A config content for failover is not created by client program automatically,
// but is maintained by user.
// This is designed for certain scenario like client emergency reboot,
// changing config needed in the same time, while nacos server is down.
String content = LocalConfigInfoProcessor.getFailover(worker.getAgentName(), dataId, group, tenant);
if (content != null) {
LOGGER.warn("[{}] [get-config] get failover ok, dataId={}, group={}, tenant={}, config={}",
worker.getAgentName(), dataId, group, tenant, ContentUtils.truncateContent(content));
cr.setContent(content);
String encryptedDataKey = LocalEncryptedDataKeyProcessor
.getEncryptDataKeyFailover(agent.getName(), dataId, group, tenant);
cr.setEncryptedDataKey(encryptedDataKey);
configFilterChainManager.doFilter(null, cr);
content = cr.getContent();
return content;
}
try {
ConfigResponse response = worker.getServerConfig(dataId, group, tenant, timeoutMs, false);
cr.setContent(response.getContent());
cr.setEncryptedDataKey(response.getEncryptedDataKey());
configFilterChainManager.doFilter(null, cr);
content = cr.getContent();
return content;
} catch (NacosException ioe) {
if (NacosException.NO_RIGHT == ioe.getErrCode()) {
throw ioe;
}
LOGGER.warn("[{}] [get-config] get from server error, dataId={}, group={}, tenant={}, msg={}",
worker.getAgentName(), dataId, group, tenant, ioe.toString());
}
content = LocalConfigInfoProcessor.getSnapshot(worker.getAgentName(), dataId, group, tenant);
if (content != null) {
LOGGER.warn("[{}] [get-config] get snapshot ok, dataId={}, group={}, tenant={}, config={}",
worker.getAgentName(), dataId, group, tenant, ContentUtils.truncateContent(content));
}
cr.setContent(content);
String encryptedDataKey = LocalEncryptedDataKeyProcessor
.getEncryptDataKeySnapshot(agent.getName(), dataId, group, tenant);
cr.setEncryptedDataKey(encryptedDataKey);
configFilterChainManager.doFilter(null, cr);
content = cr.getContent();
return content;
}
private String blank2defaultGroup(String group) {
return (StringUtils.isBlank(group)) ? Constants.DEFAULT_GROUP : group.trim();
}
private boolean removeConfigInner(String tenant, String dataId, String group, String tag) throws NacosException {
group = blank2defaultGroup(group);
ParamUtils.checkKeyParam(dataId, group);
return worker.removeConfig(dataId, group, tenant, tag);
}
private boolean publishConfigInner(String tenant, String dataId, String group, String tag, String appName,
String betaIps, String content, String type, String casMd5) throws NacosException {
group = blank2defaultGroup(group);
ParamUtils.checkParam(dataId, group, content);
ConfigRequest cr = new ConfigRequest();
cr.setDataId(dataId);
cr.setTenant(tenant);
cr.setGroup(group);
cr.setContent(content);
cr.setType(type);
configFilterChainManager.doFilter(cr, null);
content = cr.getContent();
String encryptedDataKey = cr.getEncryptedDataKey();
return worker
.publishConfig(dataId, group, tenant, appName, tag, betaIps, content, encryptedDataKey, casMd5, type);
}
@Override
public String getServerStatus() {
if (worker.isHealthServer()) {
return UP;
} else {
return DOWN;
}
}
@Override
public void addConfigFilter(IConfigFilter configFilter) {
configFilterChainManager.addFilter(configFilter);
}
@Override
public void shutDown() throws NacosException {
worker.shutdown();
}
}
