Class: Commands::JsonStepCommand

Inherits:
StepCommand show all
Defined in:
lib/commands.rb

Instance Attribute Summary collapse

Attributes inherited from StepCommand

#apps_path, #args, #beta_path, #enable_debugging_path, #hive_cmd, #hive_path, #pig_cmd, #pig_path, #script_runner_path, #step_action, #step_name

Attributes inherited from Command

#arg, #commands, #description, #logger, #name

Instance Method Summary collapse

Methods inherited from StepCommand

#default_enable_debugging_path, #default_hive_cmd, #default_hive_path, #default_pig_cmd, #default_pig_path, #default_resize_jobflow_cmd, #default_script_runner_path, #ensure_install_cmd, #extra_args, #reorder_steps, #script_args, #validate

Methods inherited from Command

#enact, #get_field, #has_value, #have, #option, #require, #require_single_jobflow, #resolve, #validate

Constructor Details

#initialize(*args) ⇒ JsonStepCommand

Returns a new instance of JsonStepCommand.



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# File 'lib/commands.rb', line 1240

def initialize(*args)
  super(*args)
  @variables = []
end

Instance Attribute Details

#variables ⇒ Object

Returns the value of attribute variables.



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# File 'lib/commands.rb', line 1238

def variables
  @variables
end

Instance Method Details

#steps ⇒ Object 



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# File 'lib/commands.rb', line 1245

def steps
  content = steps = nil
  filename = get_field(:arg)
  begin
    content = File.read(filename)
  rescue Exception => e
    raise RuntimeError, "Couldn't read json file #{filename}"
  end
  for var in get_field(:variables, []) do
    content.gsub!(var[:key], var[:value])
  end
  begin
    steps = JSON.parse(content)
  rescue Exception => e
    raise RuntimeError, "Error parsing json from file #{filename}"
  end
  if steps.is_a?(Array) then
    return steps
  else
    return [ steps ]
  end      
end