Subscription Topic Filters
Subscribers use MQTT topic filters to receive messages. SmarterLink uses the standard MQTT wildcard characters:
+: matches exactly one topic level#: matches the remainder of the topic from that level onward (must be the last character)
The full topic structure is described in mqtt-topic-format.md.
Job Events
Job events are scoped to a station, not to a specific participant. Both the role and participant-id levels are _.
| Intent |
Filter |
| Specific event at a station |
smarter-link/<site>/<area>/<sub-area>/<station>/_/_/<event-name> |
| All job events at a station |
smarter-link/<site>/<area>/<sub-area>/<station>/_/_/+ |
Data Producer Events
| Intent |
Filter |
| Specific event from a specific producer |
smarter-link/<site>/<area>/<sub-area>/<station>/producers/<participant-id>/<event-name> |
| Specific event from any producer |
smarter-link/<site>/<area>/<sub-area>/<station>/producers/+/<event-name> |
| All events from a specific producer |
smarter-link/<site>/<area>/<sub-area>/<station>/producers/<participant-id>/+ |
| All events from all producers |
smarter-link/<site>/<area>/<sub-area>/<station>/producers/# |
Data Processor Events
| Intent |
Filter |
| Specific event from a specific processor |
smarter-link/<site>/<area>/<sub-area>/<station>/processors/<participant-id>/<event-name> |
| Specific event from any processor |
smarter-link/<site>/<area>/<sub-area>/<station>/processors/+/<event-name> |
| All events from a specific processor |
smarter-link/<site>/<area>/<sub-area>/<station>/processors/<participant-id>/+ |
| All events from all processors |
smarter-link/<site>/<area>/<sub-area>/<station>/processors/# |
Broader Filters
| Intent |
Filter |
| All SmarterLink events at a station |
smarter-link/<site>/<area>/<sub-area>/<station>/# |
| All SmarterLink events site-wide |
smarter-link/<site>/# |