Class: Build::Graph::Controller

Inherits:
Files::Monitor
  • Object
show all
Defined in:
lib/build/graph/controller.rb

Overview

The top level graph controller is responsible for managing build graph state.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Controller 



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# File 'lib/build/graph/controller.rb', line 32

def initialize
  super

  @nodes = {}

  build_graph!
end

Instance Attribute Details

#nodes ⇒ Object (readonly)

Returns the value of attribute nodes.



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# File 'lib/build/graph/controller.rb', line 40

def nodes
  @nodes
end

Instance Method Details

#build_graph! ⇒ Object

Build the initial graph structure.



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# File 'lib/build/graph/controller.rb', line 55

def build_graph!
  # We build the graph without doing any actual execution:
  nodes = []
  
  walker = walk do |walker, node|
    nodes << node
  
    yield walker, node
  end
  
  traverse! walker
  
  # We should update the status of all nodes in the graph once we've traversed the graph.
  nodes.each do |node|
    node.update_status!
  end
end

#traverse!(walker) ⇒ Object

Override this to traverse the top nodes as required.



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# File 'lib/build/graph/controller.rb', line 43

def traverse!(walker)
  #Array(top).each do |node|
  #  node.update!(walker)
  #end
end

#update! ⇒ Object

Update the graph.



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# File 'lib/build/graph/controller.rb', line 89

def update!
  walker = walk do |walker, node|
    yield walker, node
  end
  
  traverse! walker
  
  return walker
end

#update_with_log ⇒ Object

Update the graph and print out timing information.



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# File 'lib/build/graph/controller.rb', line 74

def update_with_log
  puts Rainbow("*** Graph update traversal ***").green
  
  start_time = Time.now
  
  walker = update!
ensure
  end_time = Time.now
  elapsed_time = end_time - start_time

  $stdout.flush
  $stderr.puts Rainbow("Graph Update Time: %0.3fs" % elapsed_time).magenta
end

#walk(&block) ⇒ Object

Walk the graph with the given callback.



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# File 'lib/build/graph/controller.rb', line 50

def walk(&block)
  Walker.new(self, &block)
end