Class: RailsPulse::Jobs::Cards::FailureRate

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

Instance Method Summary collapse

Constructor Details

#initialize(job: nil, disabled_tags: [], show_non_tagged: true, period: 14, period_type: "day") ⇒ FailureRate

Returns a new instance of FailureRate.



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# File 'app/models/rails_pulse/jobs/cards/failure_rate.rb', line 5

def initialize(job: nil, disabled_tags: [], show_non_tagged: true, period: 14, period_type: "day")
  @job = job
  @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/jobs/cards/failure_rate.rb', line 13

def to_metric_card
  base_query = RailsPulse::Summary
    .with_tag_filters(@disabled_tags, @show_non_tagged)
    .where(
      summarizable_type: "RailsPulse::Job",
      period_type: @period_type,
      period_start: range_start..now
    )
  base_query = base_query.where(summarizable_id: @job.id) if @job

  metrics = base_query.select(
    "SUM(rails_pulse_summaries.count) AS total_count",
    "SUM(rails_pulse_summaries.error_count) AS total_errors",
    "SUM(CASE WHEN rails_pulse_summaries.period_start >= #{quote(current_window_start)} THEN rails_pulse_summaries.count ELSE 0 END) AS current_count",
    "SUM(CASE WHEN rails_pulse_summaries.period_start >= #{quote(current_window_start)} THEN rails_pulse_summaries.error_count ELSE 0 END) AS current_errors",
    "SUM(CASE WHEN rails_pulse_summaries.period_start >= #{quote(range_start)} AND rails_pulse_summaries.period_start < #{quote(current_window_start)} THEN rails_pulse_summaries.count ELSE 0 END) AS previous_count",
    "SUM(CASE WHEN rails_pulse_summaries.period_start >= #{quote(range_start)} AND rails_pulse_summaries.period_start < #{quote(current_window_start)} THEN rails_pulse_summaries.error_count ELSE 0 END) AS previous_errors"
  ).take

  total_runs = metrics&.total_count.to_i
  total_errors = metrics&.total_errors.to_i
  current_runs = metrics&.current_count.to_i
  current_errors = metrics&.current_errors.to_i
  previous_runs = metrics&.previous_count.to_i
  previous_errors = metrics&.previous_errors.to_i

  failure_rate = rate_for(total_errors, total_runs)
  current_rate = rate_for(current_errors, current_runs)
  previous_rate = rate_for(previous_errors, previous_runs)

  trend_icon, trend_amount = trend_for(current_rate, previous_rate) if show_trend?

  # Create a separate query for sparkline data using only the current period
  sparkline_query = RailsPulse::Summary
    .with_tag_filters(@disabled_tags, @show_non_tagged)
    .where(
      summarizable_type: "RailsPulse::Job",
      period_type: @period_type,
      period_start: current_window_start..now
    )
  sparkline_query = sparkline_query.where(summarizable_id: @job.id) if @job

  if @period_type == "hour"
    grouped_errors = sparkline_query.group_by_hour(:period_start).sum("rails_pulse_summaries.error_count")
    grouped_counts = sparkline_query.group_by_hour(:period_start).sum("rails_pulse_summaries.count")
  else
    grouped_errors = sparkline_query.group_by_date(:period_start).sum("rails_pulse_summaries.error_count")
    grouped_counts = sparkline_query.group_by_date(:period_start).sum("rails_pulse_summaries.count")
  end

  sparkline_data = sparkline_from_failure_rates(grouped_errors, grouped_counts)

  {
    id: "jobs_failure_rate",
    chart_color: RailsPulse::ChartColors::DEFAULT,
    context: "jobs",
    title: "Failure Rate",
    summary: "#{format_percentage(failure_rate, 1)}",
    chart_data: sparkline_data,
    trend_icon: trend_icon,
    trend_amount: trend_amount,
    trend_text: (show_trend? ? comparison_period_text : nil),
    period_stat: total_runs > 0 ? "#{format_number(total_errors)} failures ยท #{format_number(total_runs)} runs" : period_date_range,
    help_heading: "Failure Rate",
    help_text: "Percentage of job executions that raised an error over the last 14 days. A rising failure rate may indicate bugs, external dependency issues, or jobs receiving invalid data."
  }
end