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RocketMQ 生产者 Producer 启动过程

= clientConfig.buildMQClientId(); MQClientInstance instance = this.factoryTable.get(clientId); if (null , rpcHook); MQClientInstance prev = this.factoryTable.putIfAbsent(clientId, instance); if (prev ! = null) { instance = prev; log.warn(Returned Previous MQClientInstance for clientId:, clientId); } else { log.info(Created new MQClientInstance for clientId:, clientId); } } return instance; }首先生成 clientId public MQClientInstance(ClientConfig clientConfig, int instanceIndex, String clientId, RPCHook rpcHook

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Springboot 集成OAuth2.0密码模式简单配置

= null) { 写入redis缓存 cache.put(clientId, clientDetails); log.info(缓存clientId:{},{}, clientId, clientDetails (String clientId) { 从数据库读取 ClientDetails clientDetails = super.loadClientByClientId(clientId); if (clientDetails ); log.info(缓存clientId:{},{}, clientId, clientDetails); } return clientDetails; } @Override public void (clientId); } @Override public void removeClientDetails(String clientId) throws NoSuchClientException { super.removeClientDetails(clientId); removeRedisCache(clientId); } ** * 删除redis缓存 * * @param clientId

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    Springsecurity-oauth2之ClientDetailsService

    locked, expired, disabled, or invalid for any other reason. * ClientDetails loadClientByClientId(String clientId { private Map clientDetailsStore = new HashMap(); public ClientDetails loadClientByClientId(String clientId ) throws ClientRegistrationException { ClientDetails details = clientDetailsStore.get(clientId); if ( details == null) { throw new NoSuchClientException(No client with requested id: + clientId); } return ; try { details = jdbcTemplate.queryForObject(selectClientDetailsSql, new ClientDetailsRowMapper(), clientId

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    聊聊rocketmq的getOrCreateMQClientInstance

    = null) { instance = prev; log.warn(Returned Previous MQClientInstance for clientId:, clientId); } else { log.info(Created new MQClientInstance for clientId:, clientId); } }​ return instance; }​ public void removeClientFactory(final String clientId) { this.factoryTable.remove(clientId); }}MQClientManager提供了 的映射关系,只要clientId是一样的,获取的就是相同的MQClientInstance;而clientId则由clientConfig.buildMQClientId()计算出来ClientConfigrocketmq-client 与MQClientInstance的映射关系,只要clientId是一样的,获取的就是相同的MQClientInstance;而clientId则由clientConfig.buildMQClientId

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    聊聊rocketmq的getOrCreateMQClientInstance

    = null) { instance = prev; log.warn(Returned Previous MQClientInstance for clientId:, clientId); } else { log.info(Created new MQClientInstance for clientId:, clientId); } } return instance; } public void removeClientFactory(final String clientId) { this.factoryTable.remove(clientId); }}MQClientManager提供了 的映射关系,只要clientId是一样的,获取的就是相同的MQClientInstance;而clientId则由clientConfig.buildMQClientId()计算出来ClientConfigrocketmq-client 与MQClientInstance的映射关系,只要clientId是一样的,获取的就是相同的MQClientInstance;而clientId则由clientConfig.buildMQClientId

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    RedisTemplate执行lua脚本抛出异常IllegalStateException

    释放锁成功返回值 *private static final Long RELEASE_LOCK_SUCCESS_RESULT = 1L; ** * 释放锁 * * @param key 锁ID * @param clientId 客户端ID * @return 是否成功 *private boolean releaseLock(String key, String clientId) { log.info(release lock :{key:{},clientId:{}}, key, clientId); Long result = stringRedisTemplate.execute(RedisScript.of(RELEASE_LOCK_LUA_SCRIPT ), Collections.singletonList(key), clientId); return Objects.equals(result, RELEASE_LOCK_SUCCESS_RESULT :{key:{},clientId:{}}, key, clientId); 指定ReturnType为Long.class,注意这里不能使用Integer.class,因为ReturnType不支持。

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    聊聊canal的ClientIdentity

    static final long serialVersionUID = -8262100681930834834L; private String destination; private short clientId ; private String filter; public ClientIdentity(){ } public ClientIdentity(String destination, short clientId ){ this.clientId = clientId; this.destination = destination; } public ClientIdentity(String destination , short clientId, String filter){ this.clientId = clientId; this.destination = destination; this.filter null) { return false; } return StringUtils.isNotBlank(filter); } ......}ClientIdentity定义了destination、clientId

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    聊聊canal的ClientIdentity

    static final long serialVersionUID = -8262100681930834834L; private String destination; private short clientId private String filter;​ public ClientIdentity(){​ }​ public ClientIdentity(String destination, short clientId ){ this.clientId = clientId; this.destination = destination; }​ public ClientIdentity(String destination , short clientId, String filter){ this.clientId = clientId; this.destination = destination; this.filter null) { return false; } return StringUtils.isNotBlank(filter); }​ ......}ClientIdentity定义了destination、clientId

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    Springsecurity-oauth2之RemoteTokenServices

    图1    RemoteTokenServices会通过RestTemplate调用远程服务,我们在使用这个类时,要设置checkTokenEndpointUrl、clientId、clientSecret RestOperations restTemplate = new RestTemplate(); private String checkTokenEndpointUrl; private String clientId ) { this.clientId = clientId; } public void setClientSecret(String clientSecret) { this.clientSecret , String clientSecret) { if (clientId == null || clientSecret == null) { this.logger.warn(Null Client requires authentication will reject request with 401 error.); } String creds = String.format(%s:%s, clientId

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    spring websocket推送

    * @param message * @return * public boolean sendMessageToUser(Integer clientId, TextMessage message) { if (users.get(clientId) == null) return false; WebSocketSession session = users.get(clientId); if session.isOpen()) return false; try { 查询未读消息 List msgs = pushMsgDao.getPushMsg(new PushMsg(clientId) : clientIds) { try { session = users.get(clientId); if (session.isOpen()) { session.sendMessage(message = (Integer) session.getAttributes().get(CLIENT_ID); return clientId; } catch (Exception e) { return

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    服务器端实时推送技术之SSE

    clientId=111接口结束某个请求,第1步的浏览器将结束阻塞; * 其中clientId代表请求的唯一标志; * * @author syj *@RestController@RequestMapping 则永不超时 SseEmitter sseEmitter = new SseEmitter(0L); sseEmitterMap.put(clientId, new Result(clientId, System.currentTimeMillis (send) public String setSseEmitter(String clientId) { try { Result result = sseEmitterMap.get(clientId (String clientId) { Result result = sseEmitterMap.get(clientId); if (result ! ; public Result(String clientId, long timestamp, SseEmitter sseEmitter) { this.clientId = clientId; this.timestamp

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    个推推送iOS版 常见问题详解

    3、devicetoken和Clientid绑定错误怎么办? 是因为一个devicetoken绑定了两个Clientid导致的。2.     因证书环境变更,导致Clientid与devicetoken绑定变化,但服务端的数据没有更新,还是与旧的devicetoken绑定的。 当用plist文件获取到新的clientid后,会重新绑定一下,这时新旧两个clientid都会绑定到同一个devicetoken上。 当群推消息时,会根据clientid找到devicetoken进行APNS发送,这时新旧两个clientid都会发送一条数据,导致客户端会接收到两条数据。

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    dubbo自定义过滤器

    ) throws RpcException {String application = invoker.getUrl().getParameter(application);客户端应用名String clientId = invoker.getUrl().getParameter(clientId);客户端应用名RpcContext.getContext().setAttachment(application,application );RpcContext.getContext().setAttachment(clientId,clientId);return invoker.invoke(invocation);}}我们自定义了过滤器 invoker.getInterface().getName();接口名字String clientIp = RpcContext.getContext().getRemoteHost();客户端ipString clientId = invocation.getAttachment(clientId);客户端分配的IDif (AccessControlUtils.hasPermission(service, application

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    ESA2GJK1DH1K基础篇: 测试MQTT连接OneNet物联网平台

    这节看看OneNet记住一句话:咱是用MQTT,所以再怎么弄也就那几个参数,ClientID,IP地址,端口号,用户名,密码,订阅发布的主题MQTT物联网套件?添加产品?? 看到这里...看来是和原先的阿里云差不多的操作,用这几个参数组合成MQTT的ClientID,IP地址,端口号,用户名,密码?找找文档 看看咋组合???IP地址? 所以ClientID:   TestDevice等等哈,我再看看,感觉这样会出问题哈....MQTT服务器规定每个设备的ClientID必须不一样从上面就看出来了,连接的同一个MQTT服务器.....如果我和别人的 ClientID一样,岂不是会被MQTT服务器踢掉...用户名?

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    部署在SAP Cloud Platform CloudFoundry环境的应用如何消费

    我们通过创建Service instance进而创建Service Key的目的,是为了得到下图的clientid和clientsecret。 而我们拿到clientid和clientsecret,是为了用它们换取OAuth2.0协议里的access token.关于更多clientid和clientsecret基于OAuth2.0换取access 除了clientid和clientsecret外,我们还能在service key里得到当前这个SAP Cloud Platform CloudFoundry环境上所有可用的机器学习API的url,它们全部维护在节点 CloudFoundry环境信息的:https:mlftrial-image-classifier.cfapps.eu10.hana.ondemand.comapiv2imageclassification.接下来通过clientid 得到一个采用Swagger(一个采用RESTFUL接口,基于YAML和JSON语言的API文档在线自动生成工具)实现的API控制台:点击try out,从本地选择一张图片,我还是选择的这张图片:再将之前通过clientid

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    13-编写WIFI模块连接MQTT程序,和调试助手测试通信

    直接上程序吧local SubscribeTopic = wifiuser....clientid PublishTopic = wifidevice....clientid local UsartReceiveData UsartReceiveDataCntCopy=0;local globalSendData= local MqttConnectTimer = tmr.create() Mymqtt = mqtt.Client(clientid PubilcTimer:start() --------------------Variable---------------------------MqttConnectedFlage = false;clientid = wifi.sta.getmac()print(MAC: ..clientid) --------------------Rst MCU---------------------------local

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    一次 RocketMQ 顺序消费延迟的问题定位

    ) { boolean eq = this.clientId.equals(clientId); return eq && ! Group: {} NewClientId: {} {}, group, clientId, mq); } if (lockEntry.isLocked(clientId)) { lockEntry.setLastUpdateTimestamp } String oldClientId = lockEntry.getClientId(); if (lockEntry.isExpired()) { lockEntry.setClientId(clientId Group: {} OldClientId: {} NewClientId: {} {}, group, oldClientId, clientId, mq); return true; } 这里就是我们刚刚看到的日志 Group: {} OtherClientId: {} NewClientId: {} {}, group, oldClientId, clientId, mq); return false; } finally

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    你每天跑这么多自动化用例,能发现BUG吗?

    我们的测试用例有两个比较关键的部分:1)调用被测代码:例如下面的RuleService.getLastRuleByClientId(ClientId)2)进行结果Check:例如下面的AssertEqual RuleService.createRuleByClientId(ClientId,RuleDO); StringOrderId=RuleService.getLastRuleByClientId(ClientId RuleService.createRuleByClientId(ClientId,RuleDO); StringOrderId=OrderService.getLastOrderByClientId( ClientId); AssertEqual(OrderId,ABCD1234);...

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    聊聊maxwell的MysqlPositionStore

    static final Long DEFAULT_GTID_SERVER_ID = new Long(0); private final Long serverID; private String clientID ConnectionPool connectionPool; public MysqlPositionStore(ConnectionPool pool, Long serverID, String clientID , boolean gtidMode) { this.connectionPool = pool; this.clientID = clientID; this.gtidMode = gtidMode; binlogPosition.getFile()); s.setLong(4, binlogPosition.getOffset()); s.setLong(5, heartbeat); s.setString(6, clientID ; s.setLong(1, serverID); s.setString(2, clientID); return positionFromResultSet(s.executeQuery()); }

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    聊聊maxwell的MysqlPositionStore

    static final Long DEFAULT_GTID_SERVER_ID = new Long(0); private final Long serverID; private String clientID ConnectionPool connectionPool;​ public MysqlPositionStore(ConnectionPool pool, Long serverID, String clientID , boolean gtidMode) { this.connectionPool = pool; this.clientID = clientID; this.gtidMode = gtidMode; binlogPosition.getFile()); s.setLong(4, binlogPosition.getOffset()); s.setLong(5, heartbeat); s.setString(6, clientID ; s.setLong(1, serverID); s.setString(2, clientID);​ return positionFromResultSet(s.executeQuery());

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