# class Chef::Provider::ErlCall

### Public Class Methods

new(node, new_resource) click to toggle source
Calls superclass method Chef::Provider.new

    # File lib/chef/provider/erl_call.rb, line 28
    def initialize(node, new_resource)
      super(node, new_resource)
    end

### Public Instance Methods

action_run() click to toggle source

    # File lib/chef/provider/erl_call.rb, line 40
    def action_run
      case @new_resource.name_type
      when "sname"
        node = "-sname #{@new_resource.node_name}"
      when "name"
        node = "-name #{@new_resource.node_name}"
      end

      if @new_resource.cookie
        cookie = "-c #{@new_resource.cookie}"
      else
        cookie = ""
      end

      if @new_resource.distributed
        distributed = "-s"
      else
        distributed = ""
      end

      command = "erl_call -e #{distributed} #{node} #{cookie}"

      converge_by("run erlang block") do
        begin
          pid, stdin, stdout, stderr = popen4(command, :waitlast => true)

          Chef::Log.debug("#{@new_resource} running")
          Chef::Log.debug("#{@new_resource} command: #{command}")
          Chef::Log.debug("#{@new_resource} code: #{@new_resource.code}")

          @new_resource.code.each_line { |line| stdin.puts(line.chomp) }

          stdin.close

          Chef::Log.debug("#{@new_resource} output: ")

          stdout_output = ""
          stdout.each_line { |line| stdout_output << line }
          stdout.close

          stderr_output = ""
          stderr.each_line { |line| stderr_output << line }
          stderr.close

          # fail if stderr contains anything
          if stderr_output.length > 0
            raise Chef::Exceptions::ErlCall, stderr_output
          end

          # fail if the first 4 characters aren't "{ok,"
          unless stdout_output[0..3].include?('{ok,')
            raise Chef::Exceptions::ErlCall, stdout_output
          end

          @new_resource.updated_by_last_action(true)

          Chef::Log.debug("#{@new_resource} #{stdout_output}")
          Chef::Log.info("#{@new_resouce} ran successfully")
        ensure
          Process.wait(pid) if pid
        end
      end
    end

load_current_resource() click to toggle source

    # File lib/chef/provider/erl_call.rb, line 36
    def load_current_resource
      true
    end

whyrun_supported?() click to toggle source

    # File lib/chef/provider/erl_call.rb, line 32
    def whyrun_supported?
      true
    end