Class: RailsPulse::Queries::Charts::DatabaseLoad

Inherits:
Object
  • Object
show all
Defined in:
app/models/rails_pulse/queries/charts/database_load.rb

Instance Method Summary collapse

Constructor Details

#initialize(start_time:, end_time:, period_type: :day, disabled_tags: [], show_non_tagged: true) ⇒ DatabaseLoad

Returns a new instance of DatabaseLoad.



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# File 'app/models/rails_pulse/queries/charts/database_load.rb', line 5

def initialize(start_time:, end_time:, period_type: :day, disabled_tags: [], show_non_tagged: true)
  @start_time = start_time
  @end_time = end_time
  @period_type = period_type
  @disabled_tags = disabled_tags
  @show_non_tagged = show_non_tagged
end

Instance Method Details

#to_chart_data ⇒ Object 



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# File 'app/models/rails_pulse/queries/charts/database_load.rb', line 13

def to_chart_data
  step = @period_type.to_s == "hour" ? 3600 : 86400

  # Get query summaries (DB time)
  query_summaries = RailsPulse::Summary
    .with_tag_filters(@disabled_tags, @show_non_tagged)
    .where(
      summarizable_type: "RailsPulse::Query",
      period_type: @period_type,
      period_start: Time.at(@start_time)..Time.at(@end_time)
    )

  # Get route summaries (total request time)
  route_summaries = RailsPulse::Summary
    .with_tag_filters(@disabled_tags, @show_non_tagged)
    .where(
      summarizable_type: "RailsPulse::Route",
      period_type: @period_type,
      period_start: Time.at(@start_time)..Time.at(@end_time)
    )

  return nil if query_summaries.empty? || route_summaries.empty?

  # Group by period_start timestamp
  query_time_by_period = {}
  query_summaries.each do |summary|
    ts = summary.period_start.to_i
    query_time_by_period[ts] ||= 0
    query_time_by_period[ts] += summary.total_duration || 0
  end

  request_time_by_period = {}
  route_summaries.each do |summary|
    ts = summary.period_start.to_i
    request_time_by_period[ts] ||= 0
    request_time_by_period[ts] += summary.total_duration || 0
  end

  # Build labels (ms timestamps) and per-bar colored data
  # <25% = green (healthy), 25-40% = yellow (watch), >40% = red (bottleneck)
  labels = []
  bar_data = []

  (@start_time.to_i..@end_time.to_i).step(step) do |timestamp|
    query_time = query_time_by_period[timestamp] || 0
    request_time = request_time_by_period[timestamp] || 0
    percentage = request_time > 0 ? (query_time.to_f / request_time * 100).round(1) : 0

    color = if percentage < 25
      "rgb(34, 197, 94)"  # green
    elsif percentage < 40
      "rgb(234, 179, 8)"  # yellow
    else
      "rgb(239, 68, 68)"  # red
    end

    labels << timestamp * 1000
    bar_data << { value: percentage, itemStyle: { color: color } }
  end

  {
    labels: labels,
    series: [
      {
        name: "DB Load",
        data: bar_data,
        type: "bar"
      }
    ]
  }
end