Class: SiteHealth::PageSpeedSummarizer

Inherits:
Object
  • Object
show all
Defined in:
lib/site_health/summarizers/page_size_summarizer.rb

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ PageSpeedSummarizer

Returns a new instance of PageSpeedSummarizer.



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# File 'lib/site_health/summarizers/page_size_summarizer.rb', line 5

def initialize(data)
  @data = data[:checked_urls]
end

Instance Method Details

#build_row(url, runtime_in_seconds, started_at, finished_at, pagespeed_data) ⇒ Object 



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# File 'lib/site_health/summarizers/page_size_summarizer.rb', line 47

def build_row(url, runtime_in_seconds, started_at, finished_at, pagespeed_data)
  stats = pagespeed_data[:page_stats]

  kbytes_columns = [
    bytes_to_kb(stats[:css_response_bytes]),
    bytes_to_kb(stats[:html_response_bytes]),
    bytes_to_kb(stats[:image_response_bytes]),
    bytes_to_kb(stats[:javascript_response_bytes]),
    bytes_to_kb(stats[:other_response_bytes]),
  ]
  kbytes_columns << kbytes_columns.sum.round(1)

  host_columns = [
    stats[:number_hosts],
    stats[:number_js_resources],
    stats[:number_css_resources],
    stats[:number_resources],
    stats[:number_static_resources],
  ]

  total_speed_score = pagespeed_data.dig(:rule_groups, :SPEED, :score)

  [url, total_speed_score] + kbytes_columns + host_columns +
    [started_at, finished_at, runtime_in_seconds]
end

#bytes_to_kb(bytes, round: 1) ⇒ Object 



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# File 'lib/site_health/summarizers/page_size_summarizer.rb', line 73

def bytes_to_kb(bytes, round: 1)
  (bytes / 1024.0).round(round)
end

#to_csv ⇒ Object 



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# File 'lib/site_health/summarizers/page_size_summarizer.rb', line 9

def to_csv
  to_matrix.map { |row| row.join(',') }.join("\n")
end

#to_matrix ⇒ Object 



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# File 'lib/site_health/summarizers/page_size_summarizer.rb', line 13

def to_matrix
  header = %w[
    url
    total_speed_score
    css_kb
    html_kb
    image_kb
    javascript_kb
    other_kb
    total_kbytes
    number_hosts
    number_js_resources
    number_css_resources
    number_resources
    number_static_resources
    started_at
    finished_at
    runtime_in_seconds
  ]
  rows = @data.map do |_, data|
    pagespeed_data = data.dig(:checks, :google_page_speed).data
    next unless pagespeed_data

    url = data[:url]
    started_at = data[:started_at]
    finished_at = data[:finished_at]
    runtime = data[:runtime_in_seconds]

    build_row(url, runtime, started_at, finished_at, pagespeed_data)
  end.reject(&:nil?)

  [header] + rows
end