Class: Etna::Clients::Metis::WalkMetisDiffWorkflow

Inherits:
Struct
  • Object
show all
Defined in:
lib/etna/clients/metis/workflows/walk_metis_diff_workflow.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#left_walker ⇒ Object

Returns the value of attribute left_walker

Returns:

  • (Object) —

    the current value of left_walker



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# File 'lib/etna/clients/metis/workflows/walk_metis_diff_workflow.rb', line 4

def left_walker
  @left_walker
end

#right_walker ⇒ Object

Returns the value of attribute right_walker

Returns:

  • (Object) —

    the current value of right_walker



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# File 'lib/etna/clients/metis/workflows/walk_metis_diff_workflow.rb', line 4

def right_walker
  @right_walker
end

Instance Method Details

#compare_file_or_folder_age(l, r) ⇒ Object 



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# File 'lib/etna/clients/metis/workflows/walk_metis_diff_workflow.rb', line 75

def compare_file_or_folder_age(l, r)
  if l.updated_at.nil?
    return :unknown
  end

  if r.updated_at.nil?
    return :unknown
  end

  if l.updated_at < r.updated_at
    return :left_older
  elsif l.updated_at > r.updated_at
    return :right_older
  else
    return :equal
  end
end

#compare_file_or_folders(l, r) ⇒ Object 



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# File 'lib/etna/clients/metis/workflows/walk_metis_diff_workflow.rb', line 50

def compare_file_or_folders(l, r)
  if l.is_a?(Etna::Clients::Metis::Folder)
    if r.is_a?(Etna::Clients::Metis::Folder)
      return compare_file_or_folder_age(l, r)
    end

    return :left_is_folder
  end

  if r.is_a?(Etna::Clients::Metis::Folder)
    return :right_is_folder
  end


  if l.file_hash.nil? || r.file_hash.nil?
    return :unknown
  end

  if l.file_hash == r.file_hash
    return :equal
  end

  return compare_file_or_folder_age(l, r)
end

#each(&block) ⇒ Object

Iterates entries of the form [kind, left | nil, right | nil] where kind is one of

:left_unique | :right_unique | :left_is_folder | :right_is_folder
:unknown | :equal | :right_older | :left_older

and left / right is one of

nil | Etna::Clients::Metis::File | Etna::Clients::Metis::Folder



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# File 'lib/etna/clients/metis/workflows/walk_metis_diff_workflow.rb', line 11

def each(&block)
  left_enum = self.left_walker.to_enum
  right_enum = self.right_walker.to_enum

  l, l_path = next_or_nil(left_enum)
  r, r_path = next_or_nil(right_enum)

  while l && r
    if l_path == r_path
      yield [compare_file_or_folders(l, r), l, r]

      l, l_path = next_or_nil(left_enum)
      r, r_path = next_or_nil(right_enum)
    elsif l_path < r_path
      yield [:left_unique, l, nil]
      l, l_path = next_or_nil(left_enum)
    else
      yield [:right_unique, nil, r]
      r, r_path = next_or_nil(right_enum)
    end
  end

  while l
    yield [:left_unique, l, nil]
    l, l_path = next_or_nil(left_enum)
  end

  while r
    yield [:right_unique, nil, r]
    r, r_path = next_or_nil(right_enum)
  end
end

#next_or_nil(enum) ⇒ Object 



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# File 'lib/etna/clients/metis/workflows/walk_metis_diff_workflow.rb', line 44

def next_or_nil(enum)
  enum.next
rescue StopIteration
  [nil, nil]
end