Class: LlmCostTracker::Tracker

Inherits:
Object
  • Object
show all
Defined in:
lib/llm_cost_tracker/tracker.rb

Constant Summary collapse

EVENT_NAME = 
"llm_request.llm_cost_tracker"
USAGE_SOURCES = 
%i[response stream_final manual unknown].freeze

Class Method Summary collapse

Class Method Details

.enforce_budget! ⇒ Object 



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# File 'lib/llm_cost_tracker/tracker.rb', line 12

def enforce_budget!
  Budget.enforce!
end

.record(provider:, model:, input_tokens:, output_tokens:, latency_ms: nil, stream: false, usage_source: nil, provider_response_id: nil, metadata: {}) ⇒ Object 



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# File 'lib/llm_cost_tracker/tracker.rb', line 16

def record(provider:, model:, input_tokens:, output_tokens:, latency_ms: nil, stream: false,
           usage_source: nil, provider_response_id: nil, metadata: {})
  usage = EventMetadata.usage_data(input_tokens, output_tokens, metadata)

  cost_data = Pricing.cost_for(
    model: model,
    input_tokens: usage[:input_tokens],
    output_tokens: usage[:output_tokens],
    cached_input_tokens: usage[:cached_input_tokens],
    cache_read_input_tokens: usage[:cache_read_input_tokens],
    cache_creation_input_tokens: usage[:cache_creation_input_tokens]
  )

  UnknownPricing.handle!(model) unless cost_data

  event = Event.new(
    provider: provider,
    model: model,
    input_tokens: usage[:input_tokens],
    output_tokens: usage[:output_tokens],
    total_tokens: usage[:total_tokens],
    cost: cost_data,
    tags: LlmCostTracker.configuration.default_tags.merge(EventMetadata.tags(metadata)).freeze,
    latency_ms: normalized_latency_ms(latency_ms),
    stream: stream ? true : false,
    usage_source: normalized_usage_source(usage_source),
    provider_response_id: normalized_provider_response_id(provider_response_id),
    tracked_at: Time.now.utc
  )

  ActiveSupport::Notifications.instrument(EVENT_NAME, event.to_h)

  stored = store(event)
  Budget.check!(event) unless stored == false

  event
end