Class: PerfCheck::TestCase

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(route) ⇒ TestCase

Returns a new instance of TestCase.



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

def initialize(route)
  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 8

def cookie
  @cookie
end

#reference_profiles ⇒ Object

Returns the value of attribute reference_profiles.



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

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 8

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 7

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 9

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 8

def this_response
  @this_response
end

Instance Method Details

#eql?(test) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/perf_check/test_case.rb', line 118

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

#hash ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 122

def hash
  resource.hash
end

#latency_difference ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 94

def latency_difference
  this_latency - reference_latency
end

#latency_factor ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 98

def latency_factor
  reference_latency / this_latency
end

#reference_latency ⇒ Object 



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

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 89

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

#response_diff ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 102

def response_diff
  diff = Diffy::Diff.new(this_response, reference_response,
                         :diff => PerfCheck.diff_options)
  if diff.to_s.empty?
    OpenStruct.new(:changed? => false)
  else
    FileUtils.mkdir_p("#{Rails.root}/tmp/perf_check/diffs")
    file = `mktemp -u "#{Rails.root}/tmp/perf_check/diffs/XXXXXXXXXX"`.strip
    [:text, :html].each do |format|
      ext = {:text => 'diff', :html => 'html'}[format]
      File.open("#{file}.#{ext}", 'w'){ |f| f.write(diff.to_s(format)) }
    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 21

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

  profiles = (@context == :reference) ? reference_profiles : this_profiles

  headers = {'Cookie' => "#{cookie}".strip}
  headers['Accept'] = 'text/html,application/xhtml+xml,application/xml'

  (options.number_of_requests+1).times do |i|
    profile = server.profile do |http|
      http.get(resource, headers)
    end

    unless options.http_statuses.include? profile.response_code
      if options.fail_fast?
        File.open("tmp/perf_check/failed_request.html", 'w') do |error_dump|
          error_dump.write(profile.response_body)
        end
        error = sprintf("\t%2i:\tFAILED! (HTTP %d)", i, profile.response_code)
        logger.fatal(error.red.bold)
        logger.fatal("\t   The server responded with a non-2xx status for this request.")
        logger.fatal("\t   The response has been written to tmp/perf_check/failed_request.html")
        abort
      end
    end

    next if i.zero?

    if options.verify_responses
      if i == 1
        if @context == :reference
          self.reference_response = profile.response_body
        else
          self.this_response = profile.response_body
        end
      end
    end

    profile.server_memory = server.mem

    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)
      logger.info(row)
    end

    profiles << profile
  end

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

#switch_to_reference_context ⇒ Object 



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# File 'lib/perf_check/test_case.rb', line 17

def switch_to_reference_context
  @context = :reference
end

#this_latency ⇒ Object 



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

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 85

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