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Contents
module Rack::Insight
module SpeedTracer
class TraceApp
include Database::RequestDataClient
CONTENT_TYPE = 'application/json;charset=UTF-8'.freeze
FourOhFour = [404, {"Content-Type" => "text/html"}, "App tracker doesn't know that path or id"].freeze
class << self
attr_accessor :has_table
end
self.has_table = true
def initialize
table_setup("speedtracer", "uuid")
key_sql_template = "'%s'"
end
def call(env)
resp = Rack::Response.new('', 200)
resp['Content-Type'] = CONTENT_TYPE
case env['REQUEST_METHOD']
when 'HEAD' then
# SpeedTracer dispatches HEAD requests to verify the
# tracer endpoint when it detects the X-TraceUrl
# header for the first time. After the initial load
# the verification is cached by the extension.
#
# By default, we'll return 200.
when 'GET' then
# GET requests for specific trace are generated by
# the extension when the user expands the network
# resource tab. Hence, server-side tracer data is
# request on-demand, and we need to store it for
# some time.
#
qs = Rack::Utils.parse_query(env['QUERY_STRING'])
if qs['id'] && (trace = @table.retrieve("uuid = '#{qs['id']}'"))
resp.write trace.to_json
else
# Invalid request or missing request trace id
return FourOhFour
end
else
# SpeedTracer should only issue GET & HEAD requests
resp.status = 400
end
return resp.finish
end
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems