Class: RailsPulse::Dashboard::Charts::ResponseTimePercentiles

Inherits:
Object
  • Object
show all
Defined in:
app/models/rails_pulse/dashboard/charts/response_time_percentiles.rb

Instance Method Summary collapse

Constructor Details

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

Returns a new instance of ResponseTimePercentiles.



5
6
7
8
9
10
 
# File 'app/models/rails_pulse/dashboard/charts/response_time_percentiles.rb', line 5

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

Instance Method Details

#to_chart_data ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
 
# File 'app/models/rails_pulse/dashboard/charts/response_time_percentiles.rb', line 12

def to_chart_data
  if @period_type == "hour"
    # Create a range of all hours in the selected period
    start_time = (@period * 24).hours.ago.beginning_of_hour
    end_time = Time.current.beginning_of_hour

    # Get the actual data from Summary records (routes)
    summaries = RailsPulse::Summary
      .with_tag_filters(@disabled_tags, @show_non_tagged)
      .where(
        summarizable_type: "RailsPulse::Route",
        period_type: "hour",
        period_start: start_time..end_time
      )

    return nil if summaries.empty?

    # Group by hour and calculate weighted percentiles
    hourly_data = {}
    summaries.each do |summary|
      time_key = summary.period_start.beginning_of_hour
      count = summary.count || 0

      if hourly_data[time_key]
        hourly_data[time_key][:total_weighted_p50] += (summary.p50_duration || 0) * count
        hourly_data[time_key][:total_weighted_p95] += (summary.p95_duration || 0) * count
        hourly_data[time_key][:total_weighted_p99] += (summary.p99_duration || 0) * count
        hourly_data[time_key][:total_count] += count
      else
        hourly_data[time_key] = {
          total_weighted_p50: (summary.p50_duration || 0) * count,
          total_weighted_p95: (summary.p95_duration || 0) * count,
          total_weighted_p99: (summary.p99_duration || 0) * count,
          total_count: count
        }
      end
    end

    # Convert to final values (weighted averages)
    final_data = hourly_data.transform_values do |data|
      {
        p50: data[:total_count] > 0 ? (data[:total_weighted_p50] / data[:total_count]).round(0) : nil,
        p95: data[:total_count] > 0 ? (data[:total_weighted_p95] / data[:total_count]).round(0) : nil,
        p99: data[:total_count] > 0 ? (data[:total_weighted_p99] / data[:total_count]).round(0) : nil
      }
    end

    # Build hourly time range
    time_range = []
    current_time = start_time
    while current_time <= end_time
      time_range << current_time
      current_time += 1.hour
    end

    # Build labels array (hourly format)
    labels = time_range.map { |time| time.strftime("%H:%M") }

    # Build series data
    p50_data = time_range.map { |time| final_data[time]&.[](:p50) }
    p95_data = time_range.map { |time| final_data[time]&.[](:p95) }
    p99_data = time_range.map { |time| final_data[time]&.[](:p99) }
  else
    # Daily grouping (existing logic)
    start_date = @period.days.ago.beginning_of_day.to_date
    end_date = Time.current.to_date
    date_range = (start_date..end_date)

    summaries = RailsPulse::Summary
      .with_tag_filters(@disabled_tags, @show_non_tagged)
      .where(
        summarizable_type: "RailsPulse::Route",
        period_type: "day",
        period_start: start_date.beginning_of_day..end_date.end_of_day
      )

    return nil if summaries.empty?

    daily_data = {}
    summaries.each do |summary|
      date = summary.period_start.to_date
      count = summary.count || 0

      if daily_data[date]
        daily_data[date][:total_weighted_p50] += (summary.p50_duration || 0) * count
        daily_data[date][:total_weighted_p95] += (summary.p95_duration || 0) * count
        daily_data[date][:total_weighted_p99] += (summary.p99_duration || 0) * count
        daily_data[date][:total_count] += count
      else
        daily_data[date] = {
          total_weighted_p50: (summary.p50_duration || 0) * count,
          total_weighted_p95: (summary.p95_duration || 0) * count,
          total_weighted_p99: (summary.p99_duration || 0) * count,
          total_count: count
        }
      end
    end

    # Convert to final values
    final_data = daily_data.transform_values do |data|
      {
        p50: data[:total_count] > 0 ? (data[:total_weighted_p50] / data[:total_count]).round(0) : nil,
        p95: data[:total_count] > 0 ? (data[:total_weighted_p95] / data[:total_count]).round(0) : nil,
        p99: data[:total_count] > 0 ? (data[:total_weighted_p99] / data[:total_count]).round(0) : nil
      }
    end

    # Build labels array
    labels = date_range.map { |date| date.strftime("%b %-d") }

    # Build series data
    p50_data = date_range.map { |date| final_data[date]&.[](:p50) }
    p95_data = date_range.map { |date| final_data[date]&.[](:p95) }
    p99_data = date_range.map { |date| final_data[date]&.[](:p99) }
  end

  # Build series (common for both hourly and daily)
  series = []
  series << {
    name: "P50",
    data: p50_data,
    type: "line",
    color: RailsPulse::ChartColors::DEFAULT
  }
  series << {
    name: "P95",
    data: p95_data,
    type: "line",
    color: RailsPulse::ChartColors::P95
  }
  series << {
    name: "P99",
    data: p99_data,
    type: "line",
    color: RailsPulse::ChartColors::P99
  }

  # Add Service Level Objective series if configured
  slo_configs = RailsPulse.configuration.service_level_objectives
  slo_configs.each do |slo|
    color = slo[:percentile] == 95 ? RailsPulse::ChartColors::P95 : RailsPulse::ChartColors::P99
    series.unshift({
      name: "P#{slo[:percentile]} SLO (#{slo[:threshold]}ms)",
      data: Array.new(labels.length, slo[:threshold]),
      type: "line",
      lineStyle: { type: "dashed", width: 2 },
      color: color,
      symbol: "none"
    })
  end

  {
    labels: labels,
    series: series
  }
end