Class: RailsPulse::Routes::Cards::ErrorRates

Inherits:
Cards::Base
  • Object
show all
Defined in:
app/models/rails_pulse/routes/cards/error_rates.rb

Instance Method Summary collapse

Constructor Details

#initialize(route: nil, disabled_tags: [], show_non_tagged: true, period: 7, period_type: "day") ⇒ ErrorRates

Returns a new instance of ErrorRates.



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# File 'app/models/rails_pulse/routes/cards/error_rates.rb', line 5

def initialize(route: nil, disabled_tags: [], show_non_tagged: true, period: 7, period_type: "day")
  @route = route
  @disabled_tags = disabled_tags
  @show_non_tagged = show_non_tagged
  @period = period
  @period_type = period_type
end

Instance Method Details

#to_metric_card ⇒ Object 



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# File 'app/models/rails_pulse/routes/cards/error_rates.rb', line 13

def to_metric_card
  # Use base class helper for query construction
  base_query = base_summary_query("RailsPulse::Route")

  metrics = base_query.select(
    "SUM(error_count) AS total_errors",
    "SUM(status_4xx) AS total_4xx",
    "SUM(count) AS total_requests",
    "SUM(CASE WHEN period_start >= #{quote(current_window_start)} THEN error_count + status_4xx ELSE 0 END) AS current_total_errors",
    "SUM(CASE WHEN period_start >= #{quote(range_start)} AND period_start < #{quote(current_window_start)} THEN error_count + status_4xx ELSE 0 END) AS previous_total_errors"
  ).take

  total_errors = metrics.total_errors || 0
  total_4xx = metrics.total_4xx || 0
  total_requests = metrics.total_requests || 0
  current_total = metrics.current_total_errors || 0
  previous_total = metrics.previous_total_errors || 0

  has_data = total_requests > 0

  server_rate = has_data ? (total_errors.to_f / total_requests * 100).round(2) : 0
  client_rate = has_data ? (total_4xx.to_f / total_requests * 100).round(2) : 0

  # Use base class trend calculation
  if show_trend?
    trend_icon, trend_amount = has_data ? trend_for(current_total, previous_total) : [ "move-right", "—" ]
  end

  # Build sparkline data using base class helpers
  sparkline_query = build_sparkline_query("RailsPulse::Route")
  grouped_errors = group_sparkline_by_period(sparkline_query, :error_count)
  grouped_4xx = group_sparkline_by_period(sparkline_query, :status_4xx)

  # Combine error counts for each period
  combined_errors = grouped_errors.merge(grouped_4xx) { |_key, errors, fourxx| errors + fourxx }

  # Use base class sparkline generation (handles hour vs day automatically)
  sparkline_data = sparkline_from(combined_errors)

  total_rate = has_data ? (server_rate + client_rate).round(2) : 0
  summary = has_data ? "#{total_rate}% of requests" : "—"

  {
    id: "error_rates",
    chart_color: RailsPulse::ChartColors::DEFAULT,
    context: "routes",
    title: "Error Rate",
    summary: summary,
    chart_data: sparkline_data,
    trend_icon: trend_icon,
    trend_amount: trend_amount,
    trend_text: (show_trend? ? comparison_period_text : nil),
    period_stat: has_data ? "#{format_number(total_errors + total_4xx)} errors" : period_date_range,
    help_heading: "Error Rates",
    help_text: "Combined 5xx and 4xx error rate over the last 2 weeks. 5xx server errors indicate bugs or infrastructure issues. 4xx client errors may indicate broken API consumers or deprecated endpoints."
  }
end