Class: NitroIntelligence::Client::Observers::LangfuseObserver

Inherits:
Object
  • Object
show all
Defined in:
lib/nitro_intelligence/client/observers/langfuse_observer.rb

Constant Summary collapse

LITELLM_CALL_ID_HEADER =

The inference gateway returns its own request identifier on every response, including error responses. Recording it on the observation is the only way to line a failed generation up with the gateway's logs. See https://docs.litellm.ai/docs/proxy/response_headers

"x-litellm-call-id".freeze
MAX_STATUS_MESSAGE_LENGTH = 
2000

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(project_client:) ⇒ LangfuseObserver

Returns a new instance of LangfuseObserver.



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# File 'lib/nitro_intelligence/client/observers/langfuse_observer.rb', line 15

def initialize(project_client:)
  @project_client = project_client
end

Instance Attribute Details

#project_client ⇒ Object (readonly)

Returns the value of attribute project_client.



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# File 'lib/nitro_intelligence/client/observers/langfuse_observer.rb', line 13

def project_client
  @project_client
end

Instance Method Details

#observe(operation_name, type:, parameters:, trace_name:, prompt: nil, input: nil) ⇒ Object

rubocop:disable Metrics/AbcSize



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# File 'lib/nitro_intelligence/client/observers/langfuse_observer.rb', line 19

def observe(operation_name, type:, parameters:, trace_name:, prompt: nil, input: nil) # rubocop:disable Metrics/AbcSize
  metadata = parameters[:metadata]
  seed = parameters[:trace_seed]
  trace_id = NitroIntelligence::Trace.create_id(seed:) if seed.present?

  if prompt
    metadata[:prompt_name] = prompt.name
    metadata[:prompt_version] = prompt.version
  end

  metadata = metadata.transform_values(&:to_s)

  Langfuse.propagate_attributes(**propagated_attributes(parameters, metadata)) do
    @project_client.observability_client.observe(
      operation_name,
      as_type: type,
      trace_id:,
      environment: NitroIntelligence.environment.to_s,
      model: parameters[:model],
      metadata:
    ) do |generation|
      generation.update_trace(name: trace_name, release: NitroIntelligence.configuration.current_revision)
      generation.update({ prompt: { name: prompt.name, version: prompt.version } }) if prompt
      record_input(generation, input)

      result, trace_attributes = observe_failures(generation) { yield(generation) }

      if trace_attributes
        handle_truncation(trace_attributes[:input], trace_attributes[:output], trace_attributes[:model])

        generation.model = trace_attributes[:model] if trace_attributes[:model]
        generation.usage_details = trace_attributes[:usage_details] if trace_attributes[:usage_details]
        generation.input = trace_attributes[:input] if trace_attributes[:input]
        generation.output = trace_attributes[:output] if trace_attributes[:output]

        generation.update_trace(input: trace_attributes[:input], output: trace_attributes[:output])
      end

      result
    end
  end
end