Class: OctocatalogDiff::CatalogDiff::Filter::YAML

Inherits:
OctocatalogDiff::CatalogDiff::Filter show all
Defined in:
lib/octocatalog-diff/catalog-diff/filter/yaml.rb

Overview

Filter based on equivalence of YAML objects for file resources with named extensions.

Constant Summary

Constants inherited from OctocatalogDiff::CatalogDiff::Filter

AVAILABLE_FILTERS

Instance Attribute Summary

Attributes inherited from OctocatalogDiff::CatalogDiff::Filter

#logger

Instance Method Summary collapse

Methods inherited from OctocatalogDiff::CatalogDiff::Filter

apply_filters, assert_that_filter_exists, filter, filter?, #initialize

Constructor Details

This class inherits a constructor from OctocatalogDiff::CatalogDiff::Filter

Instance Method Details

#filtered?(diff, _options = {}) ⇒ Boolean

Public: Actually do the comparison of YAML objects for appropriate resources. Return true if the YAML objects are known to be equivalent. Return false if they are not equivalent, or if equivalence cannot be determined.

Parameters:

Returns:

  • (Boolean)

    true if this difference is a YAML file with identical objects, false otherwise


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# File 'lib/octocatalog-diff/catalog-diff/filter/yaml.rb', line 19

def filtered?(diff, _options = {})
  # Skip additions or removals - focus only on changes
  return false unless diff.change?

  # Make sure we are comparing file content for a file ending in .yaml or .yml extension
  return false unless diff.type == 'File' && diff.structure == %w(parameters content)
  return false unless diff.title =~ /\.ya?ml\z/

  # Attempt to convert the old value and new value into YAML objects. Assuming
  # that doesn't error out, the return value is whether or not they're equal.
  obj_old = ::YAML.load(diff.old_value)
  obj_new = ::YAML.load(diff.new_value)
  obj_old == obj_new
rescue # Rescue everything - if something failed, we aren't sure what's going on, so we'll return false.
  false
end