Class: AppMap::Swagger::RakeDiffTask::Command

Inherits:
Struct
  • Object
show all
Defined in:
lib/appmap/swagger/rake_diff_task.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#base ⇒ Object

Returns the value of attribute base

Returns:

  • (Object) —

    the current value of base



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# File 'lib/appmap/swagger/rake_diff_task.rb', line 16

def base
  @base
end

#git_command ⇒ Object

Returns the value of attribute git_command

Returns:

  • (Object) —

    the current value of git_command



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# File 'lib/appmap/swagger/rake_diff_task.rb', line 16

def git_command
  @git_command
end

#swagger_file ⇒ Object

Returns the value of attribute swagger_file

Returns:

  • (Object) —

    the current value of swagger_file



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# File 'lib/appmap/swagger/rake_diff_task.rb', line 16

def swagger_file
  @swagger_file
end

Instance Method Details

#perform ⇒ Object 



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# File 'lib/appmap/swagger/rake_diff_task.rb', line 21

def perform
  do_fail = lambda do |msg|
    warn msg
    exit $?.exitstatus || 1
  end
  
  return do_fail.(%Q('#{git_command}' not found; please install git)) unless system('git --version 2>&1 > /dev/null')

  fetch_command = 'git fetch'
  warn fetch_command if verbose
  do_fail.(%Q(#{fetch_command} failed)) unless system(fetch_command)

  show_command = %Q(git show #{base}:#{swagger_file})
  warn show_command if verbose
  base_content = `#{show_command}`
  do_fail.(%Q(#{show_command} failed)) unless $?.exitstatus == 0

  base_content = YAML.load(base_content)
  head_content = YAML.load(File.read(swagger_file))

  format_path = lambda do |tokens|
    tokens.map do |token|
      if token =~ /^[a-zA-Z0-9_-]+$/
        token
      else
        %Q("#{token}")
      end
    end.join('.')
  end

  format_change = lambda do |entry|
    path, old_v, new_v = entry
    [
      "changed       @ #{format_path.call path.split('.')}",
      "old value     : #{old_v}",
      "new value     : #{new_v}" 
    ].join("\n")
  end

  format_deletion = lambda do |entry|
    path, old_v = entry
    path_tokens = path.split('.')
    removed_key = path_tokens.pop
    [
      "removed       @ #{format_path.call path_tokens}",
      "removed key   : #{removed_key}",
      "removed value : #{old_v}" 
    ].join("\n")
  end

  format_addition = lambda do |entry|
    path, new_v = entry
    path_tokens = path.split('.')
    added_key = path_tokens.pop
    [
      "added         @ #{format_path.call path_tokens}",
      "added key     : #{added_key}",
      "added value   : #{new_v}" 
    ].join("\n")
  end

  formatters = {
    '~' => format_change,
    '-' => format_deletion,
    '+' => format_addition,
  }

  diff = Hashdiff.diff(base_content, head_content)
  diff.each_with_index do |entry, index|
    puts unless index == 0
    warn YAML.dump(entry) if verbose
    puts formatters[entry[0]].(entry[1..-1])
  end
end

#verbose ⇒ Object 



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# File 'lib/appmap/swagger/rake_diff_task.rb', line 17

def verbose
  Rake.verbose == true
end