Design Pattern: Working with Groups in Rules

[5iver (Scott Rushworth)]

@rlkoshak

I think it might be possible to make this more generic in JSR223 or the Next Gen Rules Engine, but I’m still coming up to speed on those and can’t say for sure how yet.

With JSR223, you could iterate through the ItemChannelLinkRegistry, but I decided it was more efficient (and easier) to have some sort of mapping from ThingUID to Item name. Here are two examples using JSR223-Jython and openhab2-Jython. The first uses a dictionary for the mapping, the second uses another Item.

@rule("Alert: Kodi system status update")
@when("Thing kodi:kodi:familyroom changed")
@when("Thing kodi:kodi:bedroomupstairs changed")
@when("Thing kodi:kodi:bedroomdownstairs changed")
def kodiSystemStatusUpdate(event):
    kodiMap = {"kodi:kodi:familyroom"        : "DS_FamilyRoom_Kodi_System",
               "kodi:kodi:bedroomupstairs"   : "US_MasterBedroom_Kodi_System",
               "kodi:kodi:bedroomdownstairs" : "DS_MasterBedroom_Kodi_System"}
    kodiName = kodiMap[str(event.thingUID)]
    log.debug("JSR223: Kodi system update: [{}]: [{}]".format(kodiName, event.statusInfo))
    if str(event.statusInfo) == "ONLINE":
        events.sendCommand(kodiName,"ON")
        log.info("JSR223: Kodi system update: [{}]: ON".format(kodiName))
    elif str(event.statusInfo) == "OFFLINE (COMMUNICATION_ERROR): No connection established":
        events.sendCommand(kodiName,"OFF")
        log.info("JSR223: Kodi system update: [{}]: OFF".format(kodiName))

@rule("Alert: Speaker system status update")
@when("Thing upnpcontrol:upnprenderer:5f9ec1b3-ed59-1900-4530-0007f521099e changed")
@when("Thing upnpcontrol:upnprenderer:5f9ec1b3-ed59-1900-4530-0007f521366d changed")
@when("Thing upnpcontrol:upnprenderer:5f9ec1b3-ed59-1900-4530-0007f522dcaf changed")
@when("Thing upnpcontrol:upnprenderer:5f9ec1b3-ed59-1900-4530-0007f5207868 changed")
@when("Thing upnpcontrol:upnprenderer:5f9ec1b3-ed59-1900-4530-0007f520f682 changed")
@when("Thing upnpcontrol:upnprenderer:5f9ec1b3-ed59-1900-4530-0007f5210909 changed")
@when("Thing upnpcontrol:upnprenderer:5f9ec1b3-ed59-1900-4530-0007f52220b3 changed")
@when("Thing upnpcontrol:upnprenderer:5f9ec1b3-ed59-1900-4530-0007f52109de changed")
def speakerSystemStatusUpdate(event):
    speakerName = filter(lambda item: str(item.state).replace("uuid:", "") == str(event.thingUID).split(":")[2], ir.getItem("gSpeakerUUID").members)[0].name.replace("UUID", "System")
    log.debug("JSR223: Speaker system update [{}]: [{}]".format(speakerName, event.statusInfo))
    if str(event.statusInfo) == "ONLINE":
        events.sendCommand(speakerName,"ON")
        log.info("JSR223: Speaker system update [{}]: ON".format(speakerName))
    elif str(event.statusInfo) == "OFFLINE (COMMUNICATION_ERROR): No connection established":
        events.sendCommand(speakerName,"OFF")
        log.info("JSR223: Speaker system update [{}]: OFF".format(speakerName))