Class: OpenTelemetry::Instrumentation::Sinatra::Middlewares::TracerMiddleware

Inherits:
Object
  • Object
show all
Defined in:
lib/opentelemetry/instrumentation/sinatra/middlewares/tracer_middleware.rb

Overview

Middleware to trace Sinatra requests

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ TracerMiddleware

Returns a new instance of TracerMiddleware.



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# File 'lib/opentelemetry/instrumentation/sinatra/middlewares/tracer_middleware.rb', line 13

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/opentelemetry/instrumentation/sinatra/middlewares/tracer_middleware.rb', line 17

def call(env)
  tracer.in_span(
    env['PATH_INFO'],
    attributes: { 'http.method' => env['REQUEST_METHOD'],
                  'http.url' => env['PATH_INFO'] },
    kind: :server,
    with_parent: parent_context(env)
  ) do |span|
    app.call(env).tap { |resp| trace_response(span, env, resp) }
  end
end