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@potomak
Last active June 12, 2016 17:21
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Collect and show Airbrake errors metrics with Ruby
require 'json'
require 'open-uri'
class AirbrakeFetcher
BASE_URL = 'https://airbrake.io'
DEFAULT_LIMIT = 100
def initialize(api_key, project_id)
@api_key = api_key
@project_id = project_id
end
def fetch_all_groups
page = 1
loop do
response = fetch_groups(page, DEFAULT_LIMIT)
yield response
page += 1
break if page > tot_pages(response['count'], DEFAULT_LIMIT)
end
end
# Airbrake API docs: https://airbrake.io/docs/#groups-v4
def fetch_groups(page, limit)
response_body = open(groups_url(page, limit)).read
JSON.parse(response_body)
rescue => err
puts "Error trying to fetch page #{page}: #{err}"
end
private
def groups_url(page, limit)
url = "#{BASE_URL}/api/v4/projects/#{@project_id}/groups"
params = { key: @api_key, page: page, limit: limit }
"#{url}?#{query_string(params)}"
end
def query_string(params)
params.to_a.map{ |i| i.join('=') }.join('&')
end
def tot_pages(count, limit)
(count / limit.to_f).ceil
end
end
class BarChart
MAX_BAR_WIDTH = 60
MAX_LABEL_WIDTH = 40
BAR_CHAR = '*'
# Initialize the bar chart with a list of lists of size 2: [label, value]
def initialize(data)
@data = data
end
def draw
w = label_width
t = total_value
m = max_value
s = scale_factor(m)
lines = @data.map do |l, v|
"#{draw_label(l, w)} (#{draw_value(v, t, m)}) #{draw_bar(v, s)}"
end
lines.join("\n")
end
private
def max_value
_, max = @data.max_by { |_, v| v }
max
end
def scale_factor(max)
MAX_BAR_WIDTH / max.to_f
end
def longest_label
label, _ = @data.max_by { |l, _| l.to_s.size }
label
end
def label_width
[longest_label.to_s.size, MAX_LABEL_WIDTH].min
end
def total_value
@data.reduce(0) { |s, (_, v)| s + v }
end
def draw_value(value, total, max)
"#{value}/#{total}".rjust(total.to_s.size + max.to_s.size + 1)
end
def draw_label(label, width)
label.ljust(width).slice(0, width)
end
def draw_bar(value, scale)
BAR_CHAR * (value * scale).round
end
end
require './airbrake_fetcher'
require './bar_chart'
api_key = 'xxx'
project_id = 123
errors_by_type_acc = {}
airbrake_fetcher = AirbrakeFetcher.new(api_key, project_id)
airbrake_fetcher.fetch_all_groups do |response|
# select errors objects
errors = response['groups'].map { |g| g['errors'] }.flatten
# remove errors without a type
errors = errors.select { |e| !e['type'].nil? }
# group errors by type
errors_by_type = errors.group_by { |e| e['type'] }
# accumulate errors number by type
errors_by_type_acc = errors_by_type.inject(errors_by_type_acc) do |acc, (t, es)|
acc[t] = acc[t].nil? ? es.size : acc[t] + es.size
acc
end
end
# sort by descending number of errors
errors_by_type_acc = errors_by_type_acc.sort_by { |k, es| es }.reverse
puts '---------------------------------'
puts 'Errors by type'
puts
puts BarChart.new(errors_by_type_acc).draw
puts
---------------------------------
Errors by type
NoMethodError (334/1108) ************************************************************
RuntimeError ( 94/1108) *****************
NameError ( 81/1108) ***************
ActiveRecord::RecordInvalid ( 50/1108) *********
ArgumentError ( 43/1108) ********
ActiveRecord::StatementInvalid ( 42/1108) ********
StandardError ( 38/1108) *******
ActionController::RoutingError ( 32/1108) ******
...
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