Notification method for a failed server heartbeat

# MongoDB\Driver\Monitoring\SDAMSubscriber::serverHeartbeatFailed

(mongodb >=1.13.0)

MongoDB\Driver\Monitoring\SDAMSubscriber::serverHeartbeatFailed — Notification method for a failed server heartbeat

### 说明

abstract public function MongoDB\Driver\Monitoring\SDAMSubscriber::serverHeartbeatFailed(MongoDB\Driver\Monitoring\ServerHeartbeatFailedEvent `$event`): void

If the subscriber is registered, this method is called when a server heartbeat (i.e. » hello command issued through » server monitoring) fails.

### 参数

`event` (MongoDB\Driver\Monitoring\ServerHeartbeatFailedEvent)
  An event object encapsulating information about the failed server heartbeat.

### 返回值

没有返回值。

### 错误／异常

- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.

### 参见

- MongoDB\Driver\Monitoring\ServerHeartbeatFailedEvent
- MongoDB\Driver\Monitoring\addSubscriber() - Registers a monitoring event subscriber globally
- MongoDB\Driver\Manager::addSubscriber() - Registers a monitoring event subscriber with this Manager

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