Class: Flor::TransientExecutor

Inherits:
Executor
  • Object
show all
Defined in:
lib/flor/core/texecutor.rb

Direct Known Subclasses

ConfExecutor

Defined Under Namespace

Classes: TransientLogger, TransientUnit

Instance Attribute Summary

Attributes inherited from Executor

#execution, #hooks, #traps, #unit

Instance Method Summary collapse

Methods inherited from Executor

#conf, #counter, #counter_add, #counter_next, #exid, #node, #traps_and_hooks, #trigger_block, #trigger_hook, #trigger_trap, #vars

Constructor Details

#initialize(conf = {}) ⇒ TransientExecutor

Returns a new instance of TransientExecutor.



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# File 'lib/flor/core/texecutor.rb', line 84

def initialize(conf={})

  conf = Flor::Conf.prepare(conf, {})

  super(
    TransientUnit.new(conf),
    [], # no hooks
    [], # no traps
    {
      'exid' => Flor.generate_exid('eval', 'u0'),
      'nodes' => {}, 'counters' => {}, 'start' => Flor.tstamp
    })

  @unit.archive = {} if conf['archive']
end

Instance Method Details

#archive ⇒ Object 



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# File 'lib/flor/core/texecutor.rb', line 101

def archive; @unit.archive[exid]; end

#clone ⇒ Object

Used in specs when testing multiple message arrival order on a “suite” of transient executors



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# File 'lib/flor/core/texecutor.rb', line 163

def clone

  c = TransientExecutor.allocate

  c.instance_variable_set(:@unit, @unit)
  c.instance_variable_set(:@traps, []) # not useful for a TransientEx clone
  c.instance_variable_set(:@execution, Flor.dup(@execution))

  c
end

#journal ⇒ Object 



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# File 'lib/flor/core/texecutor.rb', line 100

def journal; @unit.journal; end

#launch(tree, opts = {}) ⇒ Object 



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# File 'lib/flor/core/texecutor.rb', line 103

def launch(tree, opts={})

  @unit.opts = opts
  @unit.archive ||= {} if opts[:archive]

  @unit.logger.log_src(tree, opts)

  messages = [ Flor.make_launch_msg(@execution['exid'], tree, opts) ]

  @unit.logger.log_tree(messages.first['tree'], '0', opts)

  walk(messages, opts)
end

#step(message) ⇒ Object 



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# File 'lib/flor/core/texecutor.rb', line 155

def step(message)

  process(message)
end

#walk(messages, opts = {}) ⇒ Object 



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# File 'lib/flor/core/texecutor.rb', line 117

def walk(messages, opts={})

  loop do

    message = messages.shift
    return nil unless message

    if message['point'] == 'terminated' && messages.any?
      #
      # try to handle 'terminated' last
      #
      messages << message
      message = messages.shift
    end

    msgs = process(message)

    messages.concat(msgs)

    return messages \
      if message_match?(message, opts[:until_after])
    return messages \
      if message_match?(messages, opts[:until])
        #
        # Walk is suspended if options :until_after or :until
        # are satisfied.
        # Returns the remaining messages.

    return message \
      if message['point'] == 'terminated'
    return message \
      if message['point'] == 'failed' && message['on_error'] == nil
        #
        # Walk exits when execution terminates or fails (without on_error).
        # Returns the last message
  end
end