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Versions: 21
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Contents
# frozen_string_literal: true
require 'sinatra/base'
module OpenTracing
module Instrumentation
module Sinatra
# TraceMiddleware for sinatra
#
# Usage
# class MyApp < Sinatra::Base
# use OpenTracing::Instrumentation::Sinatra::TraceMiddleware
# set :tracer, MyTracer.instance # optionaly
# end
module TraceMiddleware
def self.registered(app)
app.helpers self
app.set :tracer, OpenTracing.global_tracer
app.set :command_name, 'sinatra_request'
app.before do
start_span
end
app.after do
close_span
end
end
private
def start_span
@scope = settings.tracer.start_active_span(
settings.command_name,
tags: build_base_tags,
)
end
def close_span
set_response_span_tags(@scope.span, env)
@scope.close
end
def build_base_tags
{
'sinatra.app' => self.class.to_s,
'sinatra.environment' => settings.environment,
'sinatra.threaded' => settings.threaded,
'sinatra.show_exceptions' => settings.show_exceptions,
}
end
def set_response_span_tags(span, env)
sinatra_route = env['sinatra.route']
span.set_tag 'sinatra.route', sinatra_route
sinatra_error = env['sinatra.error']
span.set_tag('error', true) if sinatra_error
end
end
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems