Class: Chef::Formatters::ErrorInspectors::ResourceFailureInspector

Inherits:
Object
  • Object
show all
Defined in:
lib/chef/formatters/error_inspectors/resource_failure_inspector.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(resource, action, exception) ⇒ ResourceFailureInspector

Returns a new instance of ResourceFailureInspector.


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# File 'lib/chef/formatters/error_inspectors/resource_failure_inspector.rb', line 29

def initialize(resource, action, exception)
  @resource = resource
  @action = action
  @exception = exception
end

Instance Attribute Details

#actionObject (readonly)

Returns the value of attribute action


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# File 'lib/chef/formatters/error_inspectors/resource_failure_inspector.rb', line 26

def action
  @action
end

#exceptionObject (readonly)

Returns the value of attribute exception


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# File 'lib/chef/formatters/error_inspectors/resource_failure_inspector.rb', line 27

def exception
  @exception
end

#resourceObject (readonly)

Returns the value of attribute resource


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# File 'lib/chef/formatters/error_inspectors/resource_failure_inspector.rb', line 25

def resource
  @resource
end

Instance Method Details

#add_explanation(error_description) ⇒ Object


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# File 'lib/chef/formatters/error_inspectors/resource_failure_inspector.rb', line 35

def add_explanation(error_description)
  error_description.section(exception.class.name, exception.message)

  unless filtered_bt.empty?
    error_description.section("Cookbook Trace:", filtered_bt.join("\n"))
  end

  unless dynamic_resource?
    error_description.section("Resource Declaration:", recipe_snippet)
  end

  error_description.section("Compiled Resource:", "#{resource.to_text}")

  # Template errors get wrapped in an exception class that can show the relevant template code,
  # so add them to the error output.
  if exception.respond_to?(:source_listing)
    error_description.section("Template Context:", "#{exception.source_location}\n#{exception.source_listing}")
  end
end

#dynamic_resource?Boolean

Returns:

  • (Boolean)

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# File 'lib/chef/formatters/error_inspectors/resource_failure_inspector.rb', line 88

def dynamic_resource?
  !resource.source_line
end

#filtered_btObject


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# File 'lib/chef/formatters/error_inspectors/resource_failure_inspector.rb', line 92

def filtered_bt
  filters = Array(Chef::Config.cookbook_path).map {|p| /^#{Regexp.escape(p)}/ }
  exception.backtrace.select {|line| filters.any? {|filter| line =~ filter }}
end

#recipe_snippetObject


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# File 'lib/chef/formatters/error_inspectors/resource_failure_inspector.rb', line 55

def recipe_snippet
  return nil if dynamic_resource?
  @snippet ||= begin
    if file = resource.source_line[/^(([\w]:)?[^:]+):([\d]+)/,1] and line = resource.source_line[/^#{file}:([\d]+)/,1].to_i
      lines = IO.readlines(file)

      relevant_lines = ["# In #{file}\n\n"]


      current_line = line - 1
      current_line = 0 if current_line < 0
      nesting = 0

      loop do

        # low rent parser. try to gracefully handle nested blocks in resources
        nesting += 1 if lines[current_line] =~ /[\s]+do[\s]*/
        nesting -= 1 if lines[current_line] =~ /end[\s]*$/

        relevant_lines << format_line(current_line, lines[current_line])

        break if lines[current_line + 1].nil?
        break if current_line >= (line + 50)
        break if nesting <= 0

        current_line += 1
      end
      relevant_lines << format_line(current_line + 1, lines[current_line + 1]) if lines[current_line + 1]
      relevant_lines.join("")
    end
  end
end