Telemetry

Constellation comes with a builtin system for gathering telemetry to provide online monitoring during data taking. A satellite can send register and send metrics for this purpose, which consist of a name, a unit and a metric type.

See also

Details about how to implement telemetry and metrics can be found in the application development guide.

Metric Types

Four types of metrics can be defined, that define how the metric should be handled on receiving a new value:

• LAST_VALUE: display the last value

• ACCUMULATE: display the sum of all received values

• AVERAGE: display an average of the received values

• RATE: display the rate of the value

Attention

Currently, the Influx satellite cannot add this information to the database nor handles it locally. Using LAST_VALUE and handling accumulation, averages and rates locally is currently recommended for now.