Puppet Function: jsonreplace

Defined in:
lib/puppet/parser/functions/jsonreplace.rb
Function type:
Ruby 3.x API

Overview

jsonreplace() ⇒ Any

Reads a JSON file, replaces the given key value for the supplied value and returns the resulting JSON as a string.

For example:

$test = jsonreplace($file, "somekey", "somevalue")

Returns:

  • (Any) 


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# File 'lib/puppet/parser/functions/jsonreplace.rb', line 5

newfunction(:jsonreplace, :type => :rvalue, :doc => <<-'ENDHEREDOC') do |args|
  Reads a JSON file, replaces the given key value for the supplied value and returns
  the resulting JSON as a string.

  For example:

      $test = jsonreplace($file, "somekey", "somevalue")
  ENDHEREDOC

  unless args.length == 3
    raise Puppet::ParseError, ("hash2props(): wrong number of arguments (#{args.length}; must be 3)")
  end

  if File.exists?(args[0]) 
    json = File.read(args[0])
    jsonp = JSON.parse(json)

    jsonp[args[1]] = args[2]

    JSON.pretty_generate(jsonp)
  else
    "{}"
  end
end