前景回顧
【mq】從零開始實現 mq-02-如何實現生產者調用消費者？
【mq】從零開始實現 mq-03-引入 broker 中間人
【mq】從零開始實現 mq-06-消費者心跳檢測 heartbeat
【mq】從零開始實現 mq-07-負載均衡 load balance
fluent
大家好，我是老馬。
fluent 的配置方式，是我個人非常喜歡的一種配置方式。
傳統的 java 使用 get/set 方法進行屬性設置。
類似這種：
MqBroker mqBroker = new MqBroker();
mqBroker.setPort(9999);
mqBroker.setAddress("127.0.0.1");
fluent 寫法可以讓我們寫起來代碼更加流暢：
MqBroker.newInstance()
.port(9999)
.address("127.0.0.1")
寫起來更加絲滑流暢。
Broker 配置
屬性
/**
* 端口號
*/
private int port = BrokerConst.DEFAULT_PORT;
/**
* 調用管理類
*
* @since 1.0.0
*/
private final IInvokeService invokeService = new InvokeService();
/**
* 消費者管理
*
* @since 0.0.3
*/
private IBrokerConsumerService registerConsumerService = new LocalBrokerConsumerService();
/**
* 生產者管理
*
* @since 0.0.3
*/
private IBrokerProducerService registerProducerService = new LocalBrokerProducerService();
/**
* 持久化類
*
* @since 0.0.3
*/
private IMqBrokerPersist mqBrokerPersist = new LocalMqBrokerPersist();
/**
* 推送服務
*
* @since 0.0.3
*/
private IBrokerPushService brokerPushService = new BrokerPushService();
/**
* 獲取響應超時時間
* @since 0.0.3
*/
private long respTimeoutMills = 5000;
/**
* 負載均衡
* @since 0.0.7
*/
private ILoadBalance<ConsumerSubscribeBo> loadBalance = LoadBalances.weightRoundRobbin();
/**
* 推送最大嘗試次數
* @since 0.0.8
*/
private int pushMaxAttempt = 3;
flent 配置
public MqBroker port(int port) {
this.port = port;
return this;
}
public MqBroker registerConsumerService(IBrokerConsumerService registerConsumerService) {
this.registerConsumerService = registerConsumerService;
return this;
}
public MqBroker registerProducerService(IBrokerProducerService registerProducerService) {
this.registerProducerService = registerProducerService;
return this;
}
public MqBroker mqBrokerPersist(IMqBrokerPersist mqBrokerPersist) {
this.mqBrokerPersist = mqBrokerPersist;
return this;
}
public MqBroker brokerPushService(IBrokerPushService brokerPushService) {
this.brokerPushService = brokerPushService;
return this;
}
public MqBroker respTimeoutMills(long respTimeoutMills) {
this.respTimeoutMills = respTimeoutMills;
return this;
}
public MqBroker loadBalance(ILoadBalance<ConsumerSubscribeBo> loadBalance) {
this.loadBalance = loadBalance;
return this;
}
Producer 配置
屬性
/**
* 分組名稱
*/
private String groupName = ProducerConst.DEFAULT_GROUP_NAME;
/**
* 中間人地址
*/
private String brokerAddress = "127.0.0.1:9999";
/**
* 獲取響應超時時間
* @since 0.0.2
*/
private long respTimeoutMills = 5000;
/**
* 檢測 broker 可用性
* @since 0.0.4
*/
private volatile boolean check = true;
/**
* 調用管理服務
* @since 0.0.2
*/
private final IInvokeService invokeService = new InvokeService();
/**
* 狀態管理類
* @since 0.0.5
*/
private final IStatusManager statusManager = new StatusManager();
/**
* 生產者-中間服務端服務類
* @since 0.0.5
*/
private final IProducerBrokerService producerBrokerService = new ProducerBrokerService();
/**
* 爲剩餘的請求等待時間
* @since 0.0.5
*/
private long waitMillsForRemainRequest = 60 * 1000;
/**
* 負載均衡策略
* @since 0.0.7
*/
private ILoadBalance<RpcChannelFuture> loadBalance = LoadBalances.weightRoundRobbin();
/**
* 消息發送最大嘗試次數
* @since 0.0.8
*/
private int maxAttempt = 3;
fluent 配置
public MqProducer groupName(String groupName) {
this.groupName = groupName;
return this;
}
public MqProducer brokerAddress(String brokerAddress) {
this.brokerAddress = brokerAddress;
return this;
}
public MqProducer respTimeoutMills(long respTimeoutMills) {
this.respTimeoutMills = respTimeoutMills;
return this;
}
public MqProducer check(boolean check) {
this.check = check;
return this;
}
public MqProducer waitMillsForRemainRequest(long waitMillsForRemainRequest) {
this.waitMillsForRemainRequest = waitMillsForRemainRequest;
return this;
}
public MqProducer loadBalance(ILoadBalance<RpcChannelFuture> loadBalance) {
this.loadBalance = loadBalance;
return this;
}
public MqProducer maxAttempt(int maxAttempt) {
this.maxAttempt = maxAttempt;
return this;
}
Consuemr 配置
屬性
/**
* 組名稱
*/
private String groupName = ConsumerConst.DEFAULT_GROUP_NAME;
/**
* 中間人地址
*/
private String brokerAddress = "127.0.0.1:9999";
/**
* 獲取響應超時時間
* @since 0.0.2
*/
private long respTimeoutMills = 5000;
/**
* 檢測 broker 可用性
* @since 0.0.4
*/
private volatile boolean check = true;
/**
* 爲剩餘的請求等待時間
* @since 0.0.5
*/
private long waitMillsForRemainRequest = 60 * 1000;
/**
* 調用管理類
*
* @since 1.0.0
*/
private final IInvokeService invokeService = new InvokeService();
/**
* 消息監聽服務類
* @since 0.0.5
*/
private final IMqListenerService mqListenerService = new MqListenerService();
/**
* 狀態管理類
* @since 0.0.5
*/
private final IStatusManager statusManager = new StatusManager();
/**
* 生產者-中間服務端服務類
* @since 0.0.5
*/
private final IConsumerBrokerService consumerBrokerService = new ConsumerBrokerService();
/**
* 負載均衡策略
* @since 0.0.7
*/
private ILoadBalance<RpcChannelFuture> loadBalance = LoadBalances.weightRoundRobbin();
/**
* 訂閱最大嘗試次數
* @since 0.0.8
*/
private int subscribeMaxAttempt = 3;
/**
* 取消訂閱最大嘗試次數
* @since 0.0.8
*/
private int unSubscribeMaxAttempt = 3;
fluent 配置
public MqConsumerPush subscribeMaxAttempt(int subscribeMaxAttempt) {
this.subscribeMaxAttempt = subscribeMaxAttempt;
return this;
}
public MqConsumerPush unSubscribeMaxAttempt(int unSubscribeMaxAttempt) {
this.unSubscribeMaxAttempt = unSubscribeMaxAttempt;
return this;
}
public MqConsumerPush groupName(String groupName) {
this.groupName = groupName;
return this;
}
public MqConsumerPush brokerAddress(String brokerAddress) {
this.brokerAddress = brokerAddress;
return this;
}
public MqConsumerPush respTimeoutMills(long respTimeoutMills) {
this.respTimeoutMills = respTimeoutMills;
return this;
}
public MqConsumerPush check(boolean check) {
this.check = check;
return this;
}
public MqConsumerPush waitMillsForRemainRequest(long waitMillsForRemainRequest) {
this.waitMillsForRemainRequest = waitMillsForRemainRequest;
return this;
}
public MqConsumerPush loadBalance(ILoadBalance<RpcChannelFuture> loadBalance) {
this.loadBalance = loadBalance;
return this;
}
小結
這一節的實現非常簡單，可以說是沒有啥技術難度。
只是爲了讓使用者更加方便。
希望本文對你有所幫助，如果喜歡，歡迎點贊收藏轉發一波。
我是老馬，期待與你的下次重逢。
開源地址
The message queue in java.(java 簡易版本 mq 實現) https://github.com/houbb/mq