Class: Chef::Provider::ErlCall

Inherits:
Chef::Provider show all
Includes:
Mixin::Command
Defined in:
lib/chef/provider/erl_call.rb

Instance Attribute Summary

Attributes inherited from Chef::Provider

#current_resource, #new_resource, #run_context

Instance Method Summary collapse

Methods included from Mixin::Command

#chdir_or_tmpdir, #handle_command_failures, #not_if, #only_if, #output_of_command, #run_command, #run_command_with_systems_locale

Methods included from Mixin::Command::Windows

#popen4

Methods included from Mixin::Command::Unix

#popen4

Methods inherited from Chef::Provider

#action_nothing, build_from_file, #cookbook_name, #node, #resource_collection

Methods included from Mixin::ConvertToClassName

#convert_to_class_name, #convert_to_snake_case, #filename_to_qualified_string, #snake_case_basename

Methods included from Mixin::RecipeDefinitionDSLCore

#method_missing

Methods included from Mixin::Language

#data_bag, #data_bag_item, #platform?, #search, #value_for_platform

Constructor Details

#initialize(node, new_resource) ⇒ ErlCall

Returns a new instance of ErlCall.



28
29
30
 
# File 'lib/chef/provider/erl_call.rb', line 28

def initialize(node, new_resource)
  super(node, new_resource)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Chef::Mixin::RecipeDefinitionDSLCore

Instance Method Details

#action_run ⇒ Object 



36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
 
# File 'lib/chef/provider/erl_call.rb', line 36

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}"

  begin
    pid, stdin, stdout, stderr = popen4(command, :waitlast => true)

    Chef::Log.debug("Running erl_call[#{@new_resource.name}]")
    Chef::Log.debug("erl_call[#{@new_resource.name}] command: #{command}")
    Chef::Log.debug("erl_call[#{@new_resource.name}] code: #{@new_resource.code}")

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

    stdin.close

    Chef::Log.debug("erl_call[#{@new_resource.name}] 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

    Chef::Log.debug("#{stdout_output}")
    Chef::Log.info("Ran erl_call[#{@new_resource.name}] successfully")

  ensure
    Process.wait(pid) if pid
  end

end

#load_current_resource ⇒ Object 



32
33
34
 
# File 'lib/chef/provider/erl_call.rb', line 32

def load_current_resource
  true
end