Copying a global reaction

[Tarkus]

This post is deleted!

[cw-kid]

@toggledbits

I thought you meant we could actually put the LUA code itself in to a MSR action "Set Reaction" and some how you were going to pass that to Vera.

But I see what you meant now, so we still need to edit the VeraScenes.lua file and add our functions / LUA code etc.

I can confirm the Play button works and the code is executed on my Vera Plus

So instead of sending a HTTP Request to Vera to initiate the function we can now just specify the function in the MSR rule actions.

[toggledbits]

@cw-kid said in Running Lua Code ? And watching device properties?:

I thought you meant we could actually put the LUA code itself in to a MSR action "Set Reaction" and some how you were going to pass that to Vera.

You can, and that's exactly what's happening. Your call to your preloaded function is Lua code. You can also put this in and it will run on the Vera:

function later()
    luup.log("I'm running five seconds later!", 2)
end

luup.log("I'm running now!")
luup.call_delay( "later", 5 )

You can put in any Lua you want. You can open a socket, send data, and close it. You can reload Luup (intentionally). You can write a file. No limits.

The code structure proposed by @therealdb makes good sense and is just a better way to encapsulate those functions than to bury them in Reactor rules. It will make your maintenance easier to structure your code that way.

[cw-kid]

Even better then ! Best of both worlds.

[cw-kid]

@toggledbits said in Running Lua Code ? And watching device properties?:

That said, this won't work today, because I haven't yet connected the expressions to the action parameters (the {master_level} value in the dimming action won't work yet)

Hi

Is this related to PR 0000005 ? "Set Variable action not yet implemented" Which is now Closed.

Thanks

[Tarkus]

@therealdb said in Running Lua Code ? And watching device properties?:

@cw-kid here we go: https://github.com/dbochicchio/vera/tree/master/Library

I've added a sample to RunLua as well, so this should serve well our future us when in need of it

Does this work with lua that is using functions? The following runs as standalone code but will not run from the library. I tested another block of lua without functions and that works in the library.

module("VeraScenes", package.seeall) -- TODO: personalize it

-- Function / Samsung_tv_power_on
function matrixtest() 
    luup.log('VeraScenes.matrixtest')
local socket = require("socket")

function tcpclose(tcp)
 tcp:close()
end

function Delay1()
--[[HDMI Matrix B1--]]
tcp = assert(socket.connect("192.168.255.204", 4998))
tcp:send("sendir,1:3,1,38000,1,69,341,171,22,21,22,21,22,21,22,21,22,21,22,21,22,21,22,21,22,64,22,64,22,64,22,64,22,64,22,64,22,64,22,64,22,21,22,21,22,64,22,21,22,64,22,21,22,21,22,21,22,64,22,64,22,21,22,64,22,21,22,64,22,64,22,64,22,1493,341,85,22,3669" .. "\r\n")
luup.call_delay("tcpclose", 1050, tcp)
end

luup.call_delay("Delay1", 1)

function Delay2()
--[[HDMI Matrix B2--]]
local socket = require("socket")
tcp = assert(socket.connect("192.168.255.204", 4998))
tcp:send("sendir,1:3,1,38000,1,69,343,171,21,21,22,21,22,21,22,21,21,21,22,21,22,21,21,21,22,63,22,63,22,63,22,63,22,63,22,63,22,63,22,63,22,63,22,63,22,63,22,21,22,63,22,21,21,21,22,21,22,21,21,22,21,21,22,63,22,21,22,63,22,63,22,63,22,1528,342,85,22,1528" .. "\r\n")
luup.call_delay("tcpclose", 1050, tcp)
end

luup.call_delay("Delay2", 10)
end	

[cw-kid]

@tarkus I have also seen the same issue / limitation.

Seems if your LUA code has functions within it already, you can't use that code in the VeraScenes.lua file as it doesn't run the code.

I've had to run from MSR some Vera scenes with that LUA code instead for now.

Perhaps we are both doing it incorrectly which is quite possible.

[toggledbits]

It's not a limitation. It's the way Lua works, combined with one way Luup is broken.

The problem is that you are declaring your delay callback/handler function in a module. It is therefore not a global function, it is a module function -- it is scoped within the module, not globally. To access functions inside a module, you have to use modulename.functionname(arguments), as you know, and the same is true for the delay handler/callback.

But the way Vera implemented luup.call_delay(), it takes a function name as a string, rather than a function reference. The function, therefore, has to be global. And it's not global, it's in a module.

One way to solve this problem (which all plugins experience, too, by the way) is to make a global alias. That means in your startup Lua, you do something like this:

mymodule = require( "mymodule" )         -- this line loads your module

-- Create a global alias for my delay handler
mymodule_delayhandler = mymodule.delayhandler

Then, in your module, instead of doing luup.call_delay( 'delayhandler', 5 ) you have to do luup.call_delay( 'mymodule_delayhandler', 5 ). This makes the delay use your global alias instead of the function name directly (which it can't).

[Tarkus]

So further testing seems to indicate that it is not the function causing the issue but rather either the multiple delays or just something in the structure of my code.

[cw-kid]

Thanks I will try that Global alias in my code. Both myself and Tarkus have a lot of delays in our code I think.

[cw-kid]

@toggledbits said in Running Lua Code ? And watching device properties?:

It's not a limitation. It's the way Lua works, combined with one way Luup is broken.
The problem is that you are declaring your delay callback/handler function in a module. It is therefore not a global function, it is a module function -- it is scoped within the module, not globally.

To access functions inside a module, you have to use modulename.functionname(arguments), as you know, and the same is true for the delay handler/callback.

But the way Vera implemented luup.call_delay(), it takes a function name as a string, rather than a function reference. The function, therefore, has to be global. And it's not global, it's in a module.

One way to solve this problem (which all plugins experience, too, by the way) is to make a global alias. That means in your startup Lua, you do something like this:

mymodule = require( "mymodule" ) -- this line loads your module

-- Create a global alias for my delay handler
mymodule_delayhandler = mymodule.delayhandler

Then, in your module, instead of doing luup.call_delay( 'delayhandler', 5 ) you have to do luup.call_delay( 'mymodule_delayhandler', 5 ). This makes the delay use your global alias instead of the function name directly (which it can't).

Just trying this "Global Alias" for function delays, for the first time, but I can't get it working. I must be doing something wrong.

In the top of my VeraScenes.lua file I have added this code:

module("VeraScenes", package.seeall) -- TODO: personalize it
mymodule = require( "mymodule" ) -- this line loads your module

-- Create a global alias for my delay handler
mymodule_delayhandler = mymodule.delayhandler

--Away Mode Scene
function mymodule_delayhandler()
local status = luup.variable_get("urn:upnp-org:serviceId:SwitchPower1", "Status", 419) --Status of Safe to Arm virtual switch
if status == "0" then --Safe to Arm
  luup.inet.wget("http://SEND-TTS-MESSAGE1")
  
else --Not Safe to Arm
  luup.inet.wget("http://SEND-TTS-MESSAGE2")
end
end
luup.call_delay( 'mymodule_delayhandler', 30 )

The test code checks the status of a virtual switch and sends a different HTTP request / TTS announcement etc.

I wanted a 30 second delay before anything happens at all.

When I call this function from a MSR rule by using

VeraScenes.mymodule_delayhandler()

I can hear the TTS announcement right away, so my 30 second delay is not happening.

What am I doing wrong?

@Tarkus Did you get this working?

Thanks