LG WebOS Binding No Application List cached

essjay · December 4, 2022, 12:21pm

OH 3.3.0
RPi Raspbian 10

I remember seeing in another thread that getapplications for the LG WebOS binding was moved to the karaf console.

In a DSL rule after I send a WOL to my LG webos TV OLED55C8PLA if the tv is doing a ‘cold start’ eg after being off overnight it takes a while to initialise the application list.

I get log entries like this

2022-12-04 09:44:37.803 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.

In a DSL rule how can I check that the application list has been populated?

Alternatively is it possible to trap the log [WARN] entry within the rule?

Thanks in advance for any advice.

JimT · December 7, 2022, 2:06am

I haven’t looked into lgwebos stuff in a while, but I was wondering if you could just set a timer that triggers when the lgwebos Thing came online. This timer would check the application list, and if it’s still empty, reschedule the timer.

essjay · December 7, 2022, 1:12pm

@JimT Thanks for the suggestion.

I’ll give it go, but my impression is that the TV is ready to accept commands before the Thing status changes to ONLINE.

With Thing OFFLINE, the TV certainly accepts the WOL sent by the binding when my power on Item

Switch TV_Power "TV Power" <television>  { autoupdate="false", channel="lgwebos:WebOSTV:f522b9efbf:power" }

is sent ON command. The Thing then takes several seconds to update and the LiveTV picture shows before OH Thing changes to ONLINE.

I’ll report back.

essjay · December 8, 2022, 10:25am

OK I have a much better understanding of the timings of various events now.

Using these Items:

Switch TV_PowerSW "TV Power " <television>  { autoupdate="true", channel="lgwebos:WebOSTV:f522b9efbf:power" }
String TV_AppLauncher "Application [%s]"   { channel="lgwebos:WebOSTV:f522b9efbf:appLauncher"}

I made these rules:

var Timer tv_app_timer = null

rule "WebOS TV Thing Status"
when Thing "lgwebos:WebOSTV:f522b9efbf" changed
then
  logInfo("TV Thing Status changed to", getThingStatusInfo("lgwebos:WebOSTV:f522b9efbf").toString)
end

//=====================================================================

rule "test SW"
when Item testSW received command ON 
then
var TVthingStatusInfo = getThingStatusInfo("lgwebos:WebOSTV:f522b9efbf")
  logInfo("TV STARTING", "Status: " + TVthingStatusInfo.getStatus.toString + " power: " +  TV_PowerSW.state.toString + " app: " + TV_AppLauncher.state.toString)
	
  TV_PowerSW.sendCommand(ON)  //as status is offline binding sends a WOL

  TV_AppLauncher.sendCommand("com.webos.app.hdmi3")
  tv_app_timer = createTimer(now,[|
    if(TV_AppLauncher.state.toString != "com.webos.app.hdmi3")
    {      
      TV_AppLauncher.sendCommand("com.webos.app.hdmi3")
      if(tv_app_timer !== null)tv_app_timer.reschedule(now)
    }
    else
    {      
      logInfo("TV App Status changed to", TV_AppLauncher.state.toString)
      tv_app_timer?.cancel
      tv_app_timer = null
    }  
  ])
  testSW.postUpdate(OFF)
end

I then turned on the TestSW and monitored the logs.

This is a combination of the events.log and openhab.log sorted by the timestamp with a few pertinent entries highlighted with **:

2022-12-08 08:40:39.878 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'testSW' received command ON
2022-12-08 08:40:39.897 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'testSW' changed from NULL to ON
**2022-12-08 08:40:39.908 [INFO ] [penhab.core.model.script.TV STARTING] - Status: OFFLINE power: NULL app: NULL**
2022-12-08 08:40:39.917 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_PowerSW' received command ON
2022-12-08 08:40:39.946 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:39.990 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:39.993 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:39.996 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'TV_PowerSW' changed from NULL to ON
2022-12-08 08:40:40.000 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'testSW' changed from ON to OFF
2022-12-08 08:40:42.178 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'TV_OnLineSW' changed from OFF to ON
2022-12-08 08:40:43.760 [INFO ] [openhab.event.InboxAddedEvent       ] - Discovery Result with UID 'lgwebos:WebOSTV:a3c77ba0-654a-0982-c480-f726662f05b8' has been added.
2022-12-08 08:40:43.761 [INFO ] [g.discovery.internal.PersistentInbox] - Added new thing 'lgwebos:WebOSTV:a3c77ba0-654a-0982-c480-f726662f05b8' to inbox.
2022-12-08 08:40:47.948 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'avrLrZ1_Power' changed from OFF to ON
2022-12-08 08:40:48.866 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:48.870 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:48.882 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:48.970 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:48.977 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:48.994 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:49.080 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:49.084 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:49.095 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:49.183 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:49.187 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:49.200 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:49.289 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:49.294 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:49.306 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:49.397 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:49.405 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:49.421 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:49.499 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:49.507 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:49.536 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:49.606 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:49.616 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:49.632 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:49.719 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:49.724 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:49.736 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:49.771 [INFO ] [openhab.event.InboxAddedEvent       ] - Discovery Result with UID 'onkyo:onkyoUnsupported:b074063b-003b-06BB-b000-0009b074063b' has been added.
2022-12-08 08:40:49.829 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:49.834 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:49.847 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:49.934 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:49.940 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:49.958 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:50.039 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:50.044 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:50.056 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:50.146 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:50.153 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:50.166 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:50.253 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:50.261 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:50.279 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:50.360 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:50.376 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:50.389 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:50.469 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:50.475 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:50.496 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:50.645 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:50.651 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become NULL
2022-12-08 08:40:50.663 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
**2022-12-08 08:40:50.736 [INFO ] [ab.event.ThingStatusInfoChangedEvent] - Thing 'lgwebos:WebOSTV:f522b9efbf' changed from OFFLINE: TV is off to ONLINE: Registering - You may need to confirm pairing on TV.**
**2022-12-08 08:40:50.741 [INFO ] [el.script.TV Thing Status changed to] - ONLINE: @text/online.registering**
2022-12-08 08:40:50.750 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:50.763 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become com.webos.app.hdmi3
2022-12-08 08:40:50.779 [WARN ] [lgwebos.internal.LauncherApplication] - No application list cached for this device lgwebos:WebOSTV:f522b9efbf, ignoring command.
2022-12-08 08:40:50.794 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'TV_AppLauncher' changed from NULL to com.webos.app.hdmi3
**2022-12-08 08:40:50.839 [INFO ] [ab.event.ThingStatusInfoChangedEvent] - Thing 'lgwebos:WebOSTV:f522b9efbf' changed from ONLINE: Registering - You may need to confirm pairing on TV. to ONLINE: Connected**
*2022-12-08 08:40:50.906 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'TV_AppLauncher' changed from com.webos.app.hdmi3 to com.webos.app.hdmi4*
**2022-12-08 08:40:53.471 [INFO ] [el.script.TV Thing Status changed to] - ONLINE: @text/online.connected**
2022-12-08 08:40:53.475 [INFO ] [openhab.event.ItemCommandEvent      ] - Item 'TV_AppLauncher' received command com.webos.app.hdmi3
2022-12-08 08:40:53.483 [INFO ] [penhab.event.ItemStatePredictedEvent] - Item 'TV_AppLauncher' predicted to become com.webos.app.hdmi3
2022-12-08 08:40:53.489 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'TV_AppLauncher' changed from com.webos.app.hdmi4 to com.webos.app.hdmi3
**2022-12-08 08:41:22.413 [INFO ] [odel.script.TV App Status changed to] - com.webos.app.hdmi3**

So, with the TV having been turned off for over 8 hours I could initiate a ‘cold start’ starting with:
TV thing OFFLINE
TV Power OFF
TV App NULL

I normally start the TV in ‘com.webos.app.hdmi4’ and this would have been the app in use when the TV was powered off last night.

For this experiment I powered up the TV to use ‘com.webos.app.hdmi3’ .

As seen in the ** highlights:
From status OFFLINE to ONLINE.CONNECTED took approximately 13s.
From app NULL to ‘com.webos.app.hdmi3’ took approximately 41s

What surprised me was the highlight * when after approximately 11s the TV tried to initialise ‘com.webos.app.hdmi4’ the ‘last used’ app despite the cold start app being NULL.

The application list is available less than 0.1secs after status becomes ONLINE.

Bottom line is that I have plenty to work with!