Rule

As introduced in general concepts, a Rule is a tool that you can use to monitor your assets and be notified of abnormal situations or events.

A rule in Senfi comprises of:

• Inputs
• Conditions
• Output
• Actions
• Rule execution options

Inputs are evaluated by Conditions to generate a single boolean Output. When value of Output changes, Actions, such as email and dashboard alerts, are executed. Rule execution options allows you to configure how the Rule should execute. e.g: how often the Rule is evaluated, when to execute Actions etc.

 Inputs --> Conditions --> Output

 Output Changed --> Actions

Example

• Input: iot_weighingscale_v1.battery_level
• Condition: < 20
• Action: Email reminder to replace battery
• Rule execution option: Immediately (means evaluate this rule whenever there is any incoming measurement)

Rule execution options

By setting Evaluate Type to Immediate or Polling, you can choose to execute a Rule when new values are received for any Input Measurements, or periodically, regardless of whether any Input Measurements have changed.

If Rule is set to run periodically (Polling), you must specify how often a Rule is executed by setting Intervals in seconds.

Inputs, Conditions and Output

Before adding a Rule, you should already have an event or situation that you wish to be notified about. The event or situation should be one that can be detected by monitoring data received by Senfi.

Select, as Inputs, the Metrics and Measurements from which the event or situation can be detected from. Then, construct the set of Conditions that will evaluate to true when event or situation occurs. The result of said Conditions is the Output of the Rule.

Actions

Whenever Output changes (from true to false and vice versa), Actions may be executed. Actions includes sending an email, sms, request to a webhook or triggering an alert in the dashboard.

Content of Actions & Description

Depending on the Action, different content options are available. Some examples is the title & body of an email, message text for SMS, and body content for webhook request. You will be able to describe the event or situation that has happened to the recipient of the notification in the content of an Action

To further aid you in describing the event, you can embed the value of an Input in the content of an Action.