Class: Brute::Middleware::OtelSpan

Inherits:
Object
  • Object
show all
Defined in:
lib/brute/middleware/001_otel_span.rb

Overview

Outermost OTel middleware. Creates a span per LLM stack call and passes it through env for inner OTel middlewares to decorate with events and attributes.

When opentelemetry-sdk is not loaded, this is a pure pass-through.

Stack position: outermost (wraps everything including retries).

use Brute::Middleware::OTel::Span
use Brute::Middleware::OTel::ToolResultLoop
use Brute::Middleware::OTel::ToolCalls
use Brute::Middleware::OTel::TokenUsage
# ... existing middleware ...
run Brute::Middleware::LLMCall.new

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ OtelSpan

Returns a new instance of OtelSpan.



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# File 'lib/brute/middleware/001_otel_span.rb', line 24

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/brute/middleware/001_otel_span.rb', line 28

def call(env)
  #return @app.call(env) unless defined?(::OpenTelemetry::SDK)

  #provider_name = provider_type(env[:provider])
  #model = env[:model] || (env[:provider].default_model rescue nil)
  #span_name = model ? "llm.call #{model}" : "llm.call"

  #attributes = {
  #  "brute.provider" => provider_name,
  #  "brute.streaming" => !!env[:streaming],
  #  "brute.context_messages" => env[:messages].size,
  #}
  #attributes["brute.model"] = model.to_s if model
  #attributes["brute.session_id"] = env[:metadata][:session_id].to_s if env.dig(:metadata, :session_id)

  #tracer.in_span(span_name, attributes: attributes, kind: :internal) do |span|
  #  env[:span] = span
  #  response = @app.call(env)

  #  # Record response model if it differs from request model
  #  resp_model = begin; response.model; rescue; nil; end
  #  span.set_attribute("brute.response_model", resp_model.to_s) if resp_model && resp_model != model

  #  response
  #rescue ::StandardError => e
  #  span.record_exception(e)
  #  span.status = ::OpenTelemetry::Trace::Status.error(e.message)
  #  raise
  #ensure
  #  env.delete(:span)
  #end
  @app.all(env)
end