You can use the uuid_dump command to get all the channel variables and values. Here's some rudimentary code which accepts the uuid as an argument:

-- Lua has no split function, so we need to create one

function string:split( inSplitPattern, outResults )

   if not outResults then

      outResults = {}

   end

   local theStart = 1

   local theSplitStart, theSplitEnd = string.find( self, inSplitPattern, theStart )

   while theSplitStart do

      table.insert( outResults, string.sub( self, theStart, theSplitStart-1 ) )

      theStart = theSplitEnd + 1

      theSplitStart, theSplitEnd = string.find( self, inSplitPattern, theStart )

   end

   table.insert( outResults, string.sub( self, theStart ) )

   return outResults

end

api = freeswitch.API()

uuid = argv[1]

-- uuid_dump gets all vars for a particular channel

res = api:execute('uuid_dump',uuid)

freeswitch.consoleLog('INFO',"Complete vars list: " .. res .. "\n")

-- lines is a table, one row per var: val pair

lines = string.split(res,"\n")

for i=1,#lines do

  -- check for variable name using pattern match

  -- Adjust the pattern to whatever you are trying to find

  myPattern = 'variable_'

  if string.match(lines[i], myPattern) then

    varval = string.split(lines[i],": ")

    freeswitch.consoleLog("NOTICE","Variable '" .. varval[1] .. "' contains '" .. varval[2] .. "'\n")

  end

end

I don't know if this is the most efficient way of doing what you're trying to do but it does demonstrate the power and flexibility of Lua and FreeSWITCH API's like uuid_dump. 

-MC

On Wed, Mar 2, 2016 at 12:05 PM, Oleg Stolyar <olegstolyar@gmail.com> wrote:

Hi guys,

is there a way to find all the session variable with a certain name pattern in lua?

For example I need to find all the session variables whose names start with "bla_"

As an alternative is there a way to iterate over all the session variables?  Then I can just do that and find the variables I need this way.

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_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://confluence.freeswitch.org
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