Class: Siftly::Pipeline

Inherits:
Object
  • Object
show all
Defined in:
lib/siftly/pipeline.rb

Constant Summary collapse

VALID_FAILURE_MODES = 
%i[record open closed raise].freeze

Instance Method Summary collapse

Constructor Details

#initialize(filter_keys:, filter_configs:, aggregator:, threshold:, failure_mode:, instrumenter:) ⇒ Pipeline

Returns a new instance of Pipeline.



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# File 'lib/siftly/pipeline.rb', line 7

def initialize(filter_keys:, filter_configs:, aggregator:, threshold:, failure_mode:, instrumenter:)
  @filter_keys = filter_keys.map(&:to_sym)
  @filter_configs = filter_configs
  @aggregator = aggregator
  @threshold = threshold.to_f
  @failure_mode = normalize_failure_mode(failure_mode)
  @instrumenter = instrumenter || Instrumentation::NullInstrumenter.new
end

Instance Method Details

#call(value:, attribute: nil, record: nil, context: {}) ⇒ Object 



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# File 'lib/siftly/pipeline.rb', line 16

def call(value:, attribute: nil, record: nil, context: {})
  filter_results = filter_keys.map do |filter_key|
    run_filter(filter_key, value: value, attribute: attribute, record: record, context: context)
  end

  aggregation = resolve_aggregator.call(
    filter_results: filter_results,
    threshold: threshold,
    context: { value: value, attribute: attribute, record: record, context: context }
  )

  result = Result.new(
    spam: aggregation.fetch(:spam),
    score: aggregation.fetch(:score),
    filter_results: filter_results,
    reasons: filter_results.map(&:reason).compact,
    attribute: attribute,
    value_preview: preview(value),
    threshold: threshold,
    aggregator: aggregator_name
  )

  instrumenter.instrument(
    "siftly.pipeline.completed",
    attribute: attribute,
    filter_count: filter_keys.length,
    matched_filters: result.matches.map(&:filter),
    spam: result.spam?,
    score: result.score
  )

  result
end