MetricsMessageSubscriber QML Type
Subscribes to statistics_msgs::msg::MetricsMessage messages — A generic metrics message providing statistics for measurements from different sources. For example, measure a system's CPU % for a given window yields the following data points over a window of time:. More...
| Import Statement: | import QtRos2.StatisticsMsgs |
| Inherits: | |
| Status: | Experimental Extension |
Properties
- measurementSourceName : string
- message : metricsMessage
- metricsSource : string
- statistics : list<statisticDataPoint>
- unit : string
- windowStart : time
- windowStop : time
Signals
- messageReceived(metricsMessage msg)
Detailed Description
- average cpu %
- std deviation
- min
- max
- sample count
These are all represented as different 'StatisticDataPoint's.
MetricsMessageSubscriber receives metricsMessage values from a ROS 2 topic. Set the topic and node properties, then connect to the messageReceived() signal.
See also MetricsMessagePublisher and metricsMessage.
Property Documentation
measurementSourceName : string
The measurementSourceName field of the last received message. Updated whenever a new message arrives. measurementSourceNameChanged is emitted on every update.
message : metricsMessage
The last message received on topic. Updated whenever a new message arrives.
metricsSource : string
The metricsSource field of the last received message. Updated whenever a new message arrives. metricsSourceChanged is emitted on every update.
statistics : list<statisticDataPoint>
The statistics field of the last received message. Updated whenever a new message arrives. statisticsChanged is emitted on every update.
unit : string
The unit field of the last received message. Updated whenever a new message arrives. unitChanged is emitted on every update.
windowStart : time
The windowStart field of the last received message. Updated whenever a new message arrives. windowStartChanged is emitted on every update.
windowStop : time
The windowStop field of the last received message. Updated whenever a new message arrives. windowStopChanged is emitted on every update.
Signal Documentation
messageReceived(metricsMessage msg)
Emitted when a new metricsMessage arrives on topic. msg contains the received value.
Note: The corresponding handler is onMessageReceived.
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