Class: Prefab::CriteriaEvaluator

Inherits:
Object
  • Object
show all
Defined in:
lib/prefab/criteria_evaluator.rb

Overview

This class evaluates a config’s criteria. ‘evaluate` returns the value of the first match based on the provided properties.

Defined Under Namespace

Classes: MatchResult

Constant Summary collapse

LOG = 
Prefab::InternalLogger.new(self)
NAMESPACE_KEY = 
'NAMESPACE'
NO_MATCHING_ROWS = 
[].freeze
COMPARE_TO_OPERATORS = 
{
  less_than_or_equal: -> cmp {  cmp <= 0 },
  less_than: -> cmp {  cmp < 0 },
  equal_to: -> cmp {  cmp == 0 },
  greater_than: -> cmp {  cmp > 0 },
  greater_than_or_equal: -> cmp {  cmp >= 0 },
}

Instance Method Summary collapse

Constructor Details

#initialize(config, project_env_id:, resolver:, namespace:, base_client:) ⇒ CriteriaEvaluator

Returns a new instance of CriteriaEvaluator.



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# File 'lib/prefab/criteria_evaluator.rb', line 14

def initialize(config, project_env_id:, resolver:, namespace:, base_client:)
  @config = config
  @project_env_id = project_env_id
  @resolver = resolver
  @namespace = namespace
  @base_client = base_client
end

Instance Method Details

#all_criteria_match?(conditional_value, props) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/prefab/criteria_evaluator.rb', line 31

def all_criteria_match?(conditional_value, props)
  conditional_value.criteria.all? do |criterion|
    public_send(criterion.operator, criterion, props)
  end
end

#ALWAYS_TRUE(_criterion, _properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 45

def ALWAYS_TRUE(_criterion, _properties)
  true
end

#evaluate(properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 22

def evaluate(properties)
  rtn = evaluate_for_env(@project_env_id, properties) ||
    evaluate_for_env(0, properties)
  LOG.trace {
    "Eval Key #{@config.key} Result #{rtn&.reportable_value} with #{properties.to_h}"
  } unless @config.config_type == :LOG_LEVEL
  rtn
end

#HIERARCHICAL_MATCH(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 83

def HIERARCHICAL_MATCH(criterion, properties)
  value = value_from_properties(criterion, properties)
  value&.start_with?(criterion.value_to_match.string)
end

#IN_INT_RANGE(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 88

def IN_INT_RANGE(criterion, properties)
  value = value_from_properties(criterion, properties)
  value && value >= criterion.value_to_match.int_range.start && value < criterion.value_to_match.int_range.end
end

#IN_SEG(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 37

def IN_SEG(criterion, properties)
  in_segment?(criterion, properties)
end

#NOT_IN_SEG(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 41

def NOT_IN_SEG(criterion, properties)
  !in_segment?(criterion, properties)
end

#PROP_AFTER(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 131

def PROP_AFTER(criterion, properties)
  evaluate_date_comparison(criterion, properties, COMPARE_TO_OPERATORS[:greater_than]).matched
end

#PROP_BEFORE(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 127

def PROP_BEFORE(criterion, properties)
  evaluate_date_comparison(criterion, properties, COMPARE_TO_OPERATORS[:less_than]).matched
end

#PROP_CONTAINS_ONE_OF(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 75

def PROP_CONTAINS_ONE_OF(criterion, properties)
  prop_contains_one_of?(criterion, value_from_properties(criterion, properties))
end

#PROP_DOES_NOT_CONTAIN_ONE_OF(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 79

def PROP_DOES_NOT_CONTAIN_ONE_OF(criterion, properties)
  !PROP_CONTAINS_ONE_OF(criterion, properties)
end

#PROP_DOES_NOT_END_WITH_ONE_OF(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 63

def PROP_DOES_NOT_END_WITH_ONE_OF(criterion, properties)
  !PROP_ENDS_WITH_ONE_OF(criterion, properties)
end

#PROP_DOES_NOT_MATCH(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 102

def PROP_DOES_NOT_MATCH(criterion, properties)
  result = check_regex_match(criterion, properties)
  if result.error
    false
  else
    !result.matched
  end
end

#PROP_DOES_NOT_START_WITH_ONE_OF(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 71

def PROP_DOES_NOT_START_WITH_ONE_OF(criterion, properties)
  !PROP_STARTS_WITH_ONE_OF(criterion, properties)
end

#PROP_ENDS_WITH_ONE_OF(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 59

def PROP_ENDS_WITH_ONE_OF(criterion, properties)
  prop_ends_with_one_of?(criterion, value_from_properties(criterion, properties))
end

#PROP_GREATER_THAN(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 119

def PROP_GREATER_THAN(criterion, properties)
  evaluate_number_comparison(criterion, properties, COMPARE_TO_OPERATORS[:greater_than]).matched
end

#PROP_GREATER_THAN_OR_EQUAL(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 123

def PROP_GREATER_THAN_OR_EQUAL(criterion, properties)
  evaluate_number_comparison(criterion, properties,COMPARE_TO_OPERATORS[:greater_than_or_equal]) .matched
end

#PROP_IS_NOT_ONE_OF(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 55

def PROP_IS_NOT_ONE_OF(criterion, properties)
  !PROP_IS_ONE_OF(criterion, properties)
end

#PROP_IS_ONE_OF(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 49

def PROP_IS_ONE_OF(criterion, properties)
  Array(value_from_properties(criterion, properties)).any? do |prop|
    matches?(criterion, prop, properties)
  end
end

#PROP_LESS_THAN(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 111

def PROP_LESS_THAN(criterion, properties)
  evaluate_number_comparison(criterion, properties, COMPARE_TO_OPERATORS[:less_than]).matched
end

#PROP_LESS_THAN_OR_EQUAL(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 115

def PROP_LESS_THAN_OR_EQUAL(criterion, properties)
  evaluate_number_comparison(criterion, properties, COMPARE_TO_OPERATORS[:less_than_or_equal]).matched
end

#PROP_MATCHES(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 93

def PROP_MATCHES(criterion, properties)
  result = check_regex_match(criterion, properties)
  if result.error
    false
  else
    result.matched
  end
end

#PROP_SEMVER_EQUAL(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 139

def PROP_SEMVER_EQUAL(criterion, properties)
  evaluate_semver_comparison(criterion, properties, COMPARE_TO_OPERATORS[:equal_to]).matched
end

#PROP_SEMVER_GREATER_THAN(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 143

def PROP_SEMVER_GREATER_THAN(criterion, properties)
  evaluate_semver_comparison(criterion, properties, COMPARE_TO_OPERATORS[:greater_than]).matched
end

#PROP_SEMVER_LESS_THAN(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 135

def PROP_SEMVER_LESS_THAN(criterion, properties)
  evaluate_semver_comparison(criterion, properties, COMPARE_TO_OPERATORS[:less_than]).matched
end

#PROP_STARTS_WITH_ONE_OF(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 67

def PROP_STARTS_WITH_ONE_OF(criterion, properties)
  prop_starts_with_one_of?(criterion, value_from_properties(criterion, properties))
end

#value_from_properties(criterion, properties) ⇒ Object 



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# File 'lib/prefab/criteria_evaluator.rb', line 147

def value_from_properties(criterion, properties)
  case criterion.property_name
  when NAMESPACE_KEY
    @namespace
  when 'prefab.current-time'
    Time.now.utc.to_i * 1000
  else
    properties.get(criterion.property_name)
  end
end