Class: ErrorRadar::DashboardController

Inherits:
ApplicationController show all
Defined in:
app/controllers/error_radar/dashboard_controller.rb

Overview

Error-monitoring dashboard: summary stats, simple charts and a drag-and-drop kanban board over ErrorLog statuses.

Constant Summary collapse

KANBAN_LIMIT = 
100
SEVERITY_ORDER = 
{ 'critical' => 0, 'error' => 1, 'warning' => 2, 'info' => 3 }.freeze

Instance Method Summary collapse

Instance Method Details

#index ⇒ Object 



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# File 'app/controllers/error_radar/dashboard_controller.rb', line 12

def index
  counts_by_status = ErrorLog.group(:status).count
  # statuses returns {"open"=>0, "in_progress"=>1, "resolved"=>2, "ignored"=>3}
  inv = ErrorLog.statuses.invert
  @open_count     = counts_by_status[ErrorLog.statuses['open']] || 0
  @in_progress    = counts_by_status[ErrorLog.statuses['in_progress']] || 0
  @resolved_count = counts_by_status[ErrorLog.statuses['resolved']] || 0
  @ignored_count  = counts_by_status[ErrorLog.statuses['ignored']] || 0
  @total          = counts_by_status.values.sum
  @unresolved     = @open_count + @in_progress

  @oldest_record  = ErrorLog.minimum(:first_seen_at)

  @by_category = ErrorLog.unresolved.group(:category).count
  @by_severity = ErrorLog.unresolved.group(:severity).count

  # Distinct error-tasks last seen per day (last 30 days), grouped in Ruby to
  # avoid relying on DB named-timezone tables.
  @trend = ErrorLog.where(last_seen_at: 30.days.ago..)
                   .pluck(:last_seen_at)
                   .group_by { |t| t.in_time_zone.to_date }
                   .transform_values(&:size)
                   .sort.to_h
                   .transform_keys { |d| d.strftime('%m/%d') }

  @top = ErrorLog.unresolved.order(occurrences: :desc).limit(10)

  monitor = ErrorRadar::ServerMonitor.new
  @servers = monitor.statuses
  @unexpected = monitor.unexpected_processes

  @columns = ErrorLog.statuses.keys.index_with do |status|
    ErrorLog.where(status: ErrorLog.statuses[status])
            .order(last_seen_at: :desc)
            .limit(KANBAN_LIMIT)
            .to_a
            .sort_by { |e| [SEVERITY_ORDER.fetch(e.severity, 9), -e.last_seen_at.to_i] }
  end

  @external_links = build_external_links
end

#purge ⇒ Object 



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# File 'app/controllers/error_radar/dashboard_controller.rb', line 54

def purge
  days    = params[:days].presence&.to_i
  dry_run = params[:dry_run] == '1'

  result = ErrorRadar::Cleanup.run(
    older_than_days: (days if days&.positive?),
    dry_run: dry_run
  )

  respond_to do |format|
    format.json { render json: result }
    format.html do
      msg = if dry_run
              "Dry run: would delete #{result[:deleted]} record(s)."
            else
              "Purged #{result[:deleted]} record(s)."
            end
      redirect_to root_path, notice: msg
    end
  end
end