PHP构建监视服务的方法

1、PHP构建监视服务的方法 PHP监视服务记录程序应该能够支持任意的服务检查(例如，HTTP和FTP服务)并且能够以任意方式(通过电子邮件，输出到一个日志文件，等等)记录事件。你当然想让它以一个守护程序方式运行;所以，你应该请求它输出其完整的当前状态。以下是我为大家搜索整理的PHP构建监视服务的方法，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网! 一个服务需要实现下列抽象类：abstract class ServiceCheck const FAILURE = 0;const SUCCESS = 1;protected $timeout = 30;protected $nex

2、t_attempt;protected $current_status = ServiceCheck:SUCCESS;protected $previous_status = ServiceCheck:SUCCESS;protected $frequency = 30;protected $description;protected $consecutive_failures = 0;protected $status_time;protected $failure_time;protected $loggers = array();abstract public function _cons

3、truct($params);public function _call($name， $args)if(isset($this->$name) return $this->$name;public function set_next_attempt()$this->next_attempt = time() + $this->frequency;public abstract function run();public function post_run($status)if($status != $this->current_status) $this->

4、;previous_status = $this->current_status;if($status = self:FAILURE) if( $this->current_status = self:FAILURE ) $this->consecutive_failures+;else $this->failure_time = time();else $this->consecutive_failures = 0;$this->status_time = time();$this->current_status = $status;$this-&g

5、t;log_service_event();public function log_current_status()foreach($this->loggers as $logger) $logger->log_current_status($this);private function log_service_event()foreach($this->loggers as $logger) $logger->log_service_event($this);public function register_logger(ServiceLogger $logger)$

6、this->loggers = $logger;上面的_call()重载方法提供对一个ServiceCheck对象的参数的只读存取操作：· timeout-在引擎终止检查之前，这一检查能够挂起多长时间。· next_attempt-下次尝试连接到服务器的时间。· current_status-服务的当前状态：SUCCESS或FAILURE。· previous_status-当前状态之前的状态。· frequency-每隔多长时间检查一次服务。· description-服务描述。· consecutive_failures-自从上次成功以来，服务检查连续失败的次数。· status_time-服务被检查的最后时间。· failure_time-如果状态为FAILED，则它代表发生失败的时间。这个类还实现了观察者模式，允许ServiceLogger类型的对象注册自身，然后当调用log_current_status()或log_service_event()时调用它。这里实现的关键函数是run()，它负责定义应该