Module: Legion::LLM::Pipeline::Steps::TierAssigner

Extended by:
Legion::Logging::Helper
Defined in:
lib/legion/llm/pipeline/steps/tier_assigner.rb

Constant Summary collapse

DEFAULT_MAPPINGS = 
[
  { pattern: 'gaia:tick:*', tier: :local, intent: { cost: :minimize } },
  { pattern: 'gaia:dream:*', tier: :local, intent: { cost: :minimize } },
  { pattern: 'system:guardrails', tier: :local, intent: { cost: :minimize, capability: :basic } },
  { pattern: 'system:reflection', tier: :local, intent: { cost: :minimize, capability: :moderate } },
  { pattern: 'user:*', tier: :cloud, intent: { capability: :reasoning } }
].freeze

Class Method Summary collapse

Class Method Details

.assign(caller:, classification:, priority:, gaia_hint:, existing_tier:, existing_intent: nil) ⇒ Object

rubocop:disable Lint/UnusedMethodArgument



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# File 'lib/legion/llm/pipeline/steps/tier_assigner.rb', line 22

def assign(caller:, classification:, priority:, gaia_hint:, existing_tier:, existing_intent: nil) # rubocop:disable Lint/UnusedMethodArgument
  if existing_tier
    log.debug("[llm][routing] tier_preserved tier=#{existing_tier}")
    return nil
  end

  # 1. GAIA routing hint
  recommended = gaia_hint&.dig(:data, :recommended_tier)
  if recommended
    log.info("[llm][routing] tier_assigned source=gaia tier=#{recommended}")
    return { tier: recommended.to_sym, source: :gaia }
  end

  # 2. Settings-driven role mappings
  mapping = find_role_mapping(caller)
  return mapping if mapping

  # 3. Classification-driven: PHI/PII/restricted -> local only (fail closed)
  if classification && (classification[:contains_phi] || classification[:contains_pii] ||
                        classification[:level]&.to_sym == :restricted)
    log.info('[llm][routing] tier_assigned source=classification tier=local (phi/pii/restricted)')
    return { tier: :local, intent: { privacy: :strict }, source: :classification }
  end

  # 4. Priority-driven
  case priority&.to_sym
  when :critical, :high
    log.info("[llm][routing] tier_assigned source=priority tier=cloud priority=#{priority}")
    { tier: :cloud, intent: { capability: :reasoning }, source: :priority }
  when :low, :background
    log.info("[llm][routing] tier_assigned source=priority tier=local priority=#{priority}")
    { tier: :local, intent: { cost: :minimize }, source: :priority }
  end
end

.find_role_mapping(caller) ⇒ Object 



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# File 'lib/legion/llm/pipeline/steps/tier_assigner.rb', line 57

def find_role_mapping(caller)
  return nil unless caller&.dig(:requested_by, :identity)

  identity = caller[:requested_by][:identity].to_s
  tier_mappings.each do |mapping|
    next unless File.fnmatch?(mapping[:pattern], identity)

    log.info("[llm][routing] tier_mapping identity=#{identity} tier=#{mapping[:tier]}")
    return { tier: mapping[:tier]&.to_sym, intent: mapping[:intent], source: :role_mapping }
  end
  nil
end

.tier_mappings ⇒ Object 



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# File 'lib/legion/llm/pipeline/steps/tier_assigner.rb', line 70

def tier_mappings
  configured = Legion::Settings.dig(:llm, :routing, :tier_mappings)
  configured.nil? || configured.empty? ? DEFAULT_MAPPINGS : configured
end