Class: Bricolage::Script

Inherits:
Object
  • Object
show all
Defined in:
lib/bricolage/script.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Script

Returns a new instance of Script.



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# File 'lib/bricolage/script.rb', line 9

def initialize
  @tasks = []
  @in_task_block = false
end

Instance Method Details

#bind(ctx, vars) ⇒ Object 



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# File 'lib/bricolage/script.rb', line 27

def bind(ctx, vars)
  raise "[BUG] unresolved variables given" unless vars.resolved?
  @tasks.each do |task|
    task.bind(ctx, vars)
  end
end

#run ⇒ Object 



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# File 'lib/bricolage/script.rb', line 44

def run
  result = nil
  @tasks.each do |task|
    result = task.run
  end
  result || JobResult.success
end

#run_explain ⇒ Object 



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# File 'lib/bricolage/script.rb', line 52

def run_explain
  @tasks.each do |task|
    if task.respond_to?(:run_explain)
      task.run_explain
    else
      puts "-- task #{task.class} does not support explain; show source"
      puts task.source
    end
  end
end

#source ⇒ Object 



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# File 'lib/bricolage/script.rb', line 34

def source
  buf = StringIO.new
  first = true
  @tasks.each do |task|
    buf.puts unless first; first = false
    buf.puts task.source
  end
  buf.string
end

#task(ds) ⇒ Object

Raises:



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# File 'lib/bricolage/script.rb', line 14

def task(ds)
  raise FatalError, "nested task is not supported" if @in_task_block
  raise ParameterError, "no data source" unless ds
  @in_task_block = true
  begin
    task = ds.new_task
    yield task
    @tasks.push task
  ensure
    @in_task_block = false
  end
end