Class: Blazer::Result
- Inherits:
-
Object
- Object
- Blazer::Result
- Defined in:
- lib/blazer/result.rb
Instance Attribute Summary collapse
-
#cached_at ⇒ Object
readonly
Returns the value of attribute cached_at.
-
#columns ⇒ Object
readonly
Returns the value of attribute columns.
-
#data_source ⇒ Object
readonly
Returns the value of attribute data_source.
-
#error ⇒ Object
readonly
Returns the value of attribute error.
-
#just_cached ⇒ Object
readonly
Returns the value of attribute just_cached.
-
#rows ⇒ Object
readonly
Returns the value of attribute rows.
Instance Method Summary collapse
- #anomaly?(series) ⇒ Boolean
- #boom ⇒ Object
- #cached? ⇒ Boolean
- #chart_type ⇒ Object
- #column_types ⇒ Object
- #detect_anomaly ⇒ Object
-
#initialize(data_source, columns, rows, error, cached_at, just_cached) ⇒ Result
constructor
A new instance of Result.
- #timed_out? ⇒ Boolean
Constructor Details
#initialize(data_source, columns, rows, error, cached_at, just_cached) ⇒ Result
Returns a new instance of Result.
5 6 7 8 9 10 11 12 |
# File 'lib/blazer/result.rb', line 5 def initialize(data_source, columns, rows, error, cached_at, just_cached) @data_source = data_source @columns = columns @rows = rows @error = error @cached_at = cached_at @just_cached = just_cached end |
Instance Attribute Details
#cached_at ⇒ Object (readonly)
Returns the value of attribute cached_at.
3 4 5 |
# File 'lib/blazer/result.rb', line 3 def cached_at @cached_at end |
#columns ⇒ Object (readonly)
Returns the value of attribute columns.
3 4 5 |
# File 'lib/blazer/result.rb', line 3 def columns @columns end |
#data_source ⇒ Object (readonly)
Returns the value of attribute data_source.
3 4 5 |
# File 'lib/blazer/result.rb', line 3 def data_source @data_source end |
#error ⇒ Object (readonly)
Returns the value of attribute error.
3 4 5 |
# File 'lib/blazer/result.rb', line 3 def error @error end |
#just_cached ⇒ Object (readonly)
Returns the value of attribute just_cached.
3 4 5 |
# File 'lib/blazer/result.rb', line 3 def just_cached @just_cached end |
#rows ⇒ Object (readonly)
Returns the value of attribute rows.
3 4 5 |
# File 'lib/blazer/result.rb', line 3 def rows @rows end |
Instance Method Details
#anomaly?(series) ⇒ Boolean
131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 |
# File 'lib/blazer/result.rb', line 131 def anomaly?(series) series = series.reject { |v| v[0].nil? }.sort_by { |v| v[0] } csv_str = CSV.generate do |csv| csv << ["timestamp", "count"] series.each do |row| csv << row end end r_script = %x[which Rscript].chomp type = series.any? && series.last.first.to_time - series.first.first.to_time >= 2.weeks ? "ts" : "vec" args = [type, csv_str] raise "R not found" if r_script.empty? command = "#{r_script} --vanilla #{File.("../detect_anomalies.R", __FILE__)} #{args.map { |a| Shellwords.escape(a) }.join(" ")}" output = %x[#{command}] if output.empty? raise "Unknown R error" end rows = CSV.parse(output, headers: true) error = rows.first && rows.first["x"] raise error if error = [] if type == "ts" rows.each do |row| << Time.parse(row["timestamp"]) end .include?(series.last[0].to_time) else rows.each do |row| << row["index"].to_i end .include?(series.length) end end |
#boom ⇒ Object
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 |
# File 'lib/blazer/result.rb', line 22 def boom @boom ||= begin boom = {} columns.each_with_index do |key, i| smart_columns_data_source = ([data_source] + Array(data_source.settings["inherit_smart_settings"]).map { |ds| Blazer.data_sources[ds] }).find { |ds| ds.smart_columns[key] } if smart_columns_data_source query = smart_columns_data_source.smart_columns[key] res = if query.is_a?(Hash) query else values = rows.map { |r| r[i] }.compact.uniq result = smart_columns_data_source.run_statement(ActiveRecord::Base.send(:sanitize_sql_array, [query.sub("{value}", "(?)"), values])) result.rows end boom[key] = Hash[res.map { |k, v| [k.nil? ? k : k.to_s, v] }] end end boom end end |
#cached? ⇒ Boolean
18 19 20 |
# File 'lib/blazer/result.rb', line 18 def cached? cached_at.present? end |
#chart_type ⇒ Object
66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 |
# File 'lib/blazer/result.rb', line 66 def chart_type @chart_type ||= begin if column_types.compact.size >= 2 && column_types.compact == ["time"] + (column_types.compact.size - 1).times.map { "numeric" } "line" elsif column_types == ["time", "string", "numeric"] "line2" elsif column_types.compact.size >= 2 && column_types == ["string"] + (column_types.compact.size - 1).times.map { "numeric" } "bar" elsif column_types == ["string", "string", "numeric"] "bar2" elsif column_types == ["numeric", "numeric"] "scatter" end end end |
#column_types ⇒ Object
47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 |
# File 'lib/blazer/result.rb', line 47 def column_types @column_types ||= begin columns.each_with_index.map do |k, i| v = (rows.find { |r| r[i] } || {})[i] if boom[k] "string" elsif v.is_a?(Numeric) "numeric" elsif v.is_a?(Time) || v.is_a?(Date) "time" elsif v.nil? nil else "string" end end end end |
#detect_anomaly ⇒ Object
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 |
# File 'lib/blazer/result.rb', line 82 def detect_anomaly anomaly = nil = nil if rows.empty? = "No data" else if chart_type == "line" || chart_type == "line2" series = [] if chart_type == "line" columns[1..-1].each_with_index.each do |k, i| series << {name: k, data: rows.map{ |r| [r[0], r[i + 1]] }} end else rows.group_by { |r| v = r[1]; (boom[columns[1]] || {})[v.to_s] || v }.each_with_index.map do |(name, v), i| series << {name: name, data: v.map { |v2| [v2[0], v2[2]] }} end end current_series = nil begin anomalies = [] series.each do |s| current_series = s[:name] anomalies << s[:name] if anomaly?(s[:data]) end anomaly = anomalies.any? if anomaly if anomalies.size == 1 = "Anomaly detected in #{anomalies.first}" else = "Anomalies detected in #{anomalies.to_sentence}" end else = "No anomalies detected" end rescue => e = "#{current_series}: #{e.}" raise e if Rails.env.development? end else = "Bad format" end end [anomaly, ] end |
#timed_out? ⇒ Boolean
14 15 16 |
# File 'lib/blazer/result.rb', line 14 def timed_out? error == Blazer::TIMEOUT_MESSAGE end |