Class: PerfCheck::TestCase

Inherits:
Object
  • Object
show all
Defined in:
lib/perf_check/test_case.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(perf_check, route) ⇒ TestCase 



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# File 'lib/perf_check/test_case.rb', line 13

def initialize(perf_check, route)
  @perf_check = perf_check
  self.this_profiles = []
  self.reference_profiles = []
  self.resource = route
end

Instance Attribute Details

Returns the value of attribute cookie.



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# File 'lib/perf_check/test_case.rb', line 9

def cookie
  @cookie
end

#error_backtrace ⇒ Object

Returns the value of attribute error_backtrace.



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# File 'lib/perf_check/test_case.rb', line 11

def error_backtrace
  @error_backtrace
end

#http_status ⇒ Object

Returns the value of attribute http_status.



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# File 'lib/perf_check/test_case.rb', line 11

def http_status
  @http_status
end

#max_memory ⇒ Object

Returns the value of attribute max_memory.



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# File 'lib/perf_check/test_case.rb', line 11

def max_memory
  @max_memory
end

#perf_check ⇒ Object (readonly)

Returns the value of attribute perf_check.



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# File 'lib/perf_check/test_case.rb', line 7

def perf_check
  @perf_check
end

#reference_profiles ⇒ Object

Returns the value of attribute reference_profiles.



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# File 'lib/perf_check/test_case.rb', line 10

def reference_profiles
  @reference_profiles
end

#reference_response ⇒ Object

Returns the value of attribute reference_response.



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# File 'lib/perf_check/test_case.rb', line 9

def reference_response
  @reference_response
end

#resource ⇒ Object

Returns the value of attribute resource.



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# File 'lib/perf_check/test_case.rb', line 8

def resource
  @resource
end

#this_profiles ⇒ Object

Returns the value of attribute this_profiles.



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# File 'lib/perf_check/test_case.rb', line 10

def this_profiles
  @this_profiles
end

#this_response ⇒ Object

Returns the value of attribute this_response.



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# File 'lib/perf_check/test_case.rb', line 9

def this_response
  @this_response
end

Instance Method Details

#eql?(test) ⇒ Boolean 



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# File 'lib/perf_check/test_case.rb', line 109

def eql?(test)
  resource == test.resource
end

#hash ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 113

def hash
  resource.hash
end

#issue_request(server, options) ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 117

def issue_request(server, options)
  server.profile do |http|
    http.get(resource, request_headers)
  end
end

#latency_difference ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 85

def latency_difference
  this_latency - reference_latency
end

#reference_latency ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 71

def reference_latency
  return nil if reference_profiles.empty?
  reference_profiles.map(&:latency).inject(0.0, :+) / reference_profiles.size
end

#reference_query_count ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 80

def reference_query_count
  return nil if reference_profiles.empty?
  reference_profiles.map(&:query_count).inject(0, :+) / reference_profiles.size
end

#request_headers ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 123

def request_headers
  headers = {'Cookie' => "#{cookie}".strip}
  headers['Accept'] = 'text/html,application/xhtml+xml,application/xml'
  headers.merge!(perf_check.options.headers)
end

#response_diff ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 93

def response_diff
  diff = Diffy::Diff.new(reference_response, this_response,
                         include_diff_info: true,
                         diff: perf_check.options.diff_options)
  if diff.to_s(:text).lines.length < 3
    OpenStruct.new(:changed? => false)
  else
    FileUtils.mkdir_p("#{perf_check.app_root}/tmp/perf_check/diffs")
    file = `mktemp -u "#{perf_check.app_root}/tmp/perf_check/diffs/XXXXXXXXX"`.strip
    File.open("#{file}.diff", "w") do |f|
      f.write(diff.to_s(:text).lines[2..-1].join)
    end
    OpenStruct.new(:changed? => true, :file => "#{file}.diff")
  end
end

#run(server, options) ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 20

def run(server, options)
  unless options.diff
    perf_check.logger.info("\t"+['request', 'latency', 'server rss', 'status', 'queries', 'profiler data'].map(&:underline).join("   "))
  end

  (options.number_of_requests + 2).times do |i|
    profile = issue_request(server, options)
    next if i < 2 # first 2 requests warm up the server/db and get tossed

    if options.verify_no_diff && i == 2
      response_for_comparison(profile.response_body)
    end

    unless options.diff
      row = sprintf("\t%2i:\t  %.1fms   %4dMB\t  %s\t   %s\t   %s",
                    i, profile.latency, profile.server_memory,
                    profile.response_code, profile.query_count, profile.profile_url)
      perf_check.logger.info(row)
      self.max_memory = profile.server_memory
    end

    context_profiles << profile

    self.http_status = '200'

    unless options.http_statuses.include?(profile.response_code)
      self.http_status = profile.response_code
      
      error = sprintf("\t  :\tFAILED! (HTTP %d)", profile.response_code)
      perf_check.logger.warn(error.red.bold)
      perf_check.logger.warn("\t   The server responded with an invalid http code")
      if profile.backtrace
        perf_check.logger.warn("Backtrace found:")
        backtrace = [profile.backtrace[0], *profile.backtrace.grep(/#{perf_check.app_root}/)]
        self.error_backtrace = ''
        backtrace.each do |line|
          perf_check.logger.warn("  #{line}")
          self.error_backtrace += "#{line}\n"
        end
      end
      break
    end
  end

  perf_check.logger.info '' unless options.diff # pretty!
end

#speedup_factor ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 89

def speedup_factor
  reference_latency.to_f / this_latency.to_f
end

#switch_to_reference_context ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 129

def switch_to_reference_context
  @context = :reference
end

#this_latency ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 67

def this_latency
  this_profiles.map(&:latency).inject(0.0, :+) / this_profiles.size
end

#this_query_count ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 76

def this_query_count
  this_profiles.map(&:query_count).inject(0, :+) / this_profiles.size
end