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 13

def index
  @total          = ErrorLog.count
  @open_count     = ErrorLog.status_open.count
  @in_progress    = ErrorLog.status_in_progress.count
  @resolved_count = ErrorLog.status_resolved.count
  @ignored_count  = ErrorLog.status_ignored.count
  @unresolved     = @open_count + @in_progress

  @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

#show ⇒ Object 



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# File 'app/controllers/error_radar/dashboard_controller.rb', line 50

def show; end

#update_status ⇒ Object 



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# File 'app/controllers/error_radar/dashboard_controller.rb', line 52

def update_status
  new_status = params[:status].to_s
  unless ErrorLog.statuses.key?(new_status)
    return render json: { ok: false, error: 'invalid status' }, status: :unprocessable_entity
  end

  if new_status == 'resolved'
    @error.resolve!(by: error_radar_current_user)
  else
    @error.update!(status: new_status, resolved_at: nil)
  end

  render json: { ok: true, id: @error.id, status: @error.status }
end