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Contents
module ScoutApm
module Instruments
class Sinatra
attr_reader :logger
def initalize(logger=ScoutApm::Agent.instance.logger)
@logger = logger
@installed = false
end
def installed?
@installed
end
def install
@installed = true
if defined?(::Sinatra) && defined?(::Sinatra::Base) && ::Sinatra::Base.private_method_defined?(:dispatch!)
ScoutApm::Agent.instance.logger.info "Instrumenting Sinatra"
::Sinatra::Base.class_eval do
include ScoutApm::Tracer
include ScoutApm::Instruments::SinatraInstruments
alias dispatch_without_scout_instruments! dispatch!
alias dispatch! dispatch_with_scout_instruments!
end
end
end
end
module SinatraInstruments
def dispatch_with_scout_instruments!
scout_controller_action = "Controller/Sinatra/#{scout_sinatra_controller_name(@request)}"
self.class.scout_apm_trace(scout_controller_action, :uri => @request.path_info, :ip => @request.ip) do
dispatch_without_scout_instruments!
end
end
# Iterates through the app's routes, returning the matched route that the request should be
# grouped under for the metric name.
#
# If not found, "unknown" is returned. This prevents a metric explosion.
#
# Nice to have: substitute the param pattern (([^/?#]+)) w/the named key (the +key+ param of the block).
def scout_sinatra_controller_name(request)
name = 'unknown'
verb = request.request_method if request && request.respond_to?(:request_method)
Array(self.class.routes[verb]).each do |pattern, keys, conditions, block|
if pattern = process_route(pattern, keys, conditions) { pattern.source }
name = pattern
end
end
name.gsub!(%r{^[/^]*(.*?)[/\$\?]*$}, '\1')
if verb
name = [verb,name].join(' ')
end
name
end
end
end
end
Version data entries
24 entries across 24 versions & 1 rubygems