Class: Flor::Executor

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

Direct Known Subclasses

TransientExecutor, UnitExecutor

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(unit, hooks, traps, execution) ⇒ Executor

Returns a new instance of Executor.



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# File 'lib/flor/core/executor.rb', line 12

def initialize(unit, hooks, traps, execution)

  @unit = unit
  @execution = execution

  @hooks = hooks # raw hooks if any, fresh from the loader
  @traps = traps # array of Trap instances

  @htraps = nil
end

Instance Attribute Details

#execution ⇒ Object (readonly)

Returns the value of attribute execution.



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# File 'lib/flor/core/executor.rb', line 8

def execution
  @execution
end

#hooks ⇒ Object (readonly)

Returns the value of attribute hooks.



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# File 'lib/flor/core/executor.rb', line 9

def hooks
  @hooks
end

#traps ⇒ Object (readonly)

Returns the value of attribute traps.



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# File 'lib/flor/core/executor.rb', line 10

def traps
  @traps
end

#unit ⇒ Object (readonly)

Returns the value of attribute unit.



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# File 'lib/flor/core/executor.rb', line 7

def unit
  @unit
end

Instance Method Details

#conf ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 23

def conf; @unit.conf; end

#counter(key) ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 45

def counter(key)

  @execution['counters'][key.to_s] || -1
end

#counter_add(key, count) ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 50

def counter_add(key, count)

  k = key.to_s

  @execution['counters'][k] ||= 0
  @execution['counters'][k] += count
end

#counter_next(key) ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 58

def counter_next(key)

  counter_add(key, 1)
end

#exid ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 24

def exid; @execution['exid']; end

#node(msg_or_nid, node_instance = false) ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 26

def node(msg_or_nid, node_instance=false)

  return nil unless msg_or_nid

  nid = msg_or_nid
  msg = msg_or_nid
  #
  if nid.is_a?(String)
    msg = nil
  else
    nid = msg['nid']
  end

  n = @execution['nodes'][nid]

  return nil unless n
  node_instance ? Flor::Node.new(self, n, msg) : n
end

#traps_and_hooks ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 127

def traps_and_hooks

  @htraps = nil if @htraps && @htraps.size != @traps.size

  @htraps ||= @traps.collect(&:to_hook)
  @hhooks ||= @hooks.collect(&:to_hook)

  @htraps + @hhooks
end

#trigger_block(block, opts, message) ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 91

def trigger_block(block, opts, message)

  r =
    case block.arity
    when 1 then block.call(message)
    when 2 then block.call(message, opts)
    else block.call(self, message, opts)
    end

  r.is_a?(Array) && r.all? { |e| e.is_a?(Hash) } ? r : []
    # be lenient with block hooks, help them return an array
end

#trigger_hook(hook, message) ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 71

def trigger_hook(hook, message)

  m =
    case
    when hook.respond_to?(:notify) then :notify
    when hook.respond_to?(:on_message) then :on_message
    else :on
    end
  as =
    case hook.method(m).arity
    when 3 then [ @unit, self, message ]
    when 2 then [ self, message ]
    else [ message ]
    end

  r = hook.send(m, *as)

  Flor.is_array_of_messages?(r) ? r : []
end

#trigger_trap(trap, message) ⇒ Object 



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# File 'lib/flor/core/executor.rb', line 63

def trigger_trap(trap, message)

  del, msgs = trap.trigger(self, message)
  @traps.delete(trap) if del

  msgs
end

#vars(nid, vs = {}) ⇒ Object

Given a nid, returns a copy of all the var the node sees at that point.



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# File 'lib/flor/core/executor.rb', line 106

def vars(nid, vs={})

  n = node(nid); return vs unless n

  (n['vars'] || {})
    .each { |k, v| vs[k] = Flor.dup(v) unless vs.has_key?(k) }

  pnid = n['parent']

  if @unit.loader && pnid == nil && n['vdomain'] != false

    @unit.loader.variables(n['vdomain'] || Flor.domain(@exid))
      .each { |k, v| vs[k] = Flor.dup(v) unless vs.has_key?(k) }
  end

  if cn = n['cnid']; vars(cn, vs); end
  vars(pnid, vs) if pnid

  vs
end