Module: Legion::LLM::Pipeline::Steps::StickyPersist

Includes:
StickyHelpers, Legion::Logging::Helper
Included in:
Executor
Defined in:
lib/legion/llm/pipeline/steps/sticky_persist.rb

Constant Summary collapse

SENSITIVE_PARAM_NAMES = 
%w[
  api_key token secret password bearer_token
  access_token private_key secret_key auth_token credential
].freeze

Instance Method Summary collapse

Instance Method Details

#step_sticky_persist ⇒ Object

rubocop:disable Metrics/AbcSize,Metrics/MethodLength



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# File 'lib/legion/llm/pipeline/steps/sticky_persist.rb', line 18

def step_sticky_persist # rubocop:disable Metrics/AbcSize,Metrics/MethodLength
  return unless @sticky_turn_snapshot
  return unless sticky_enabled? && @request.conversation_id

  conv_id        = @request.conversation_id
  state          = ConversationStore.read_sticky_state(conv_id).dup
  runners        = (state[:sticky_runners] || {}).dup
  deferred_count = state[:deferred_tool_calls] || 0

  # Single Registry snapshot — one mutex acquisition for all lookups
  tool_snapshot = if defined?(::Legion::Tools::Registry)
                    ::Legion::Tools::Registry.all_tools
                                             .to_h { |t| [t.tool_name, t] }
                  else
                    {}
                  end

  pending_snapshot = @pending_tool_history.dup # Concurrent::Array#dup is thread-safe
  completed        = pending_snapshot.select { |e| e[:result] && !e[:error] }

  executed_runner_keys = []
  deferred_call_count  = 0

  completed.each do |entry|
    tc = @injected_tool_map[entry[:tool_name]] || tool_snapshot[entry[:tool_name]]
    next unless tc&.deferred?

    key = entry[:runner_key] || "#{tc.extension}_#{tc.runner}"
    executed_runner_keys << key
    deferred_call_count  += 1
  end

  executed_runner_keys.uniq!
  deferred_count              += deferred_call_count
  state[:deferred_tool_calls]  = deferred_count

  executed_runner_keys.each do |key|
    existing   = runners[key]
    new_expiry = deferred_count + execution_sticky_tool_calls
    runners[key] = {
      tier:                        :executed,
      expires_after_deferred_call: [existing&.dig(:expires_after_deferred_call) || 0, new_expiry].max
    }
  end

  (@freshly_triggered_keys - executed_runner_keys).each do |key|
    existing = runners[key]
    # Skip only if CURRENTLY live under execution tier (not expired).
    # An expired execution-sticky runner should be re-activated under trigger tier.
    if (existing&.dig(:tier) == :executed) && (deferred_count < (existing[:expires_after_deferred_call] || 0))
      next
      # Falls through when execution window is expired — apply trigger tier below
    end

    existing_expiry = runners.dig(key, :expires_at_turn) || 0
    # +1 accounts for the current user message not yet stored at snapshot time
    new_expiry      = @sticky_turn_snapshot + trigger_sticky_turns + 1
    runners[key]    = { tier: :triggered, expires_at_turn: [existing_expiry, new_expiry].max }
  end

  state[:sticky_runners] = runners

  if pending_snapshot.any?
    history = (state[:tool_call_history] || []).dup

    pending_snapshot.each do |entry|
      next unless entry[:result]

      tc         = @injected_tool_map[entry[:tool_name]] || tool_snapshot[entry[:tool_name]]
      runner_key = entry[:runner_key] || (tc ? "#{tc.extension}_#{tc.runner}" : 'unknown')

      history << {
        tool:   entry[:tool_name],
        runner: runner_key,
        turn:   @sticky_turn_snapshot,
        args:   sanitize_args(truncate_args(entry[:args] || {})),
        result: entry[:result].to_s[0, max_result_length],
        error:  entry[:error] || false
      }
    end

    state[:tool_call_history] = history.last(max_history_entries)
  end

  ConversationStore.write_sticky_state(conv_id, state)
rescue StandardError => e
  @warnings << "sticky_persist error: #{e.message}"
  handle_exception(e, level: :warn, operation: 'llm.pipeline.step_sticky_persist')
end