class Rack::RequestProfiler
Public Class Methods
new(app, options = {})
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# File lib/rack/request_profiler.rb, line 5 def initialize(app, options = {}) @app = app @printer = options[:printer] || ::RubyProf::GraphHtmlPrinter @exclusions = options[:exclude] @path = options[:path] @path ||= Rails.root + 'tmp/performance' if defined?(Rails) @path ||= ::File.join((ENV["TMPDIR"] || "/tmp"), 'performance') @path = Pathname(@path) end
Public Instance Methods
call(env)
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# File lib/rack/request_profiler.rb, line 16 def call(env) request = Rack::Request.new(env) mode = profile_mode(request) if mode ::RubyProf.measure_mode = mode ::RubyProf.start end status, headers, body = @app.call(env) if mode result = ::RubyProf.stop write_result(result, request) end [status, headers, body] end
format(printer)
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# File lib/rack/request_profiler.rb, line 45 def format(printer) case printer when ::RubyProf::FlatPrinter 'txt' when ::RubyProf::FlatPrinterWithLineNumbers 'txt' when ::RubyProf::GraphPrinter 'txt' when ::RubyProf::GraphHtmlPrinter 'html' when ::RubyProf::DotPrinter 'dot' when ::RubyProf::CallTreePrinter "out.#{Process.pid}" when ::RubyProf::CallStackPrinter 'html' else 'txt' end end
prefix(printer)
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# File lib/rack/request_profiler.rb, line 66 def prefix(printer) case printer when ::RubyProf::CallTreePrinter "callgrind." else "" end end
profile_mode(request)
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# File lib/rack/request_profiler.rb, line 34 def profile_mode(request) mode_string = request.params["profile_request"] if mode_string if mode_string.downcase == "true" or mode_string == "1" ::RubyProf::PROCESS_TIME else ::RubyProf.const_get(mode_string.upcase) end end end
write_result(result, request)
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# File lib/rack/request_profiler.rb, line 75 def write_result(result, request) result.eliminate_methods!(@exclusions) if @exclusions printer = @printer.new(result) Dir.mkdir(@path) unless ::File.exists?(@path) url = request.fullpath.gsub(/[?\/]/, '-') filename = "#{prefix(printer)}#{Time.now.strftime('%Y-%m-%d-%H-%M-%S')}-#{url.slice(0, 50)}.#{format(printer)}" ::File.open(@path + filename, 'w+') do |f| printer.print(f) end end