Rename Evil Metrics to Yabeda

Gemfile

@@ -4,7 +4,7 @@ source "https://rubygems.org"
 
 git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 
-# Specify your gem's dependencies in evil-metrics-rails.gemspec
+# Specify your gem's dependencies in yabeda-rails.gemspec
 gemspec
 
 group :development, :test do

README.md

@@ -1,4 +1,4 @@
-# Evil::Metrics::[Rails]
+# Yabeda::[Rails]
 
 Built-in metrics for out-of-the box [Rails] applications monitoring 
 
@@ -9,9 +9,9 @@ if your monitoring system already collects Rails metrics (e.g. NewRelic) then yo
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'evil-metrics-rails'
+gem 'yabeda-rails'
 # Then add monitoring system adapter, e.g.:
-# gem 'evil-metrics-prometheus'
+# gem 'yabeda-prometheus'
 ```
 
 And then execute:
@@ -31,7 +31,7 @@ And then execute:
  - `on_controller_action`: Allows to collect
 
     ```ruby
-    Evil::Metrics::Rails.on_controller_action do |event, labels|
+    Yabeda::Rails.on_controller_action do |event, labels|
       next unless event.payload[:ext_service_runtime]
       time_in_seconds = event.payload[:ext_service_runtime] / 1000.0
       rails_ext_service_runtime.measure(labels, time_in_seconds)
@@ -46,7 +46,7 @@ To install this gem onto your local machine, run `bundle exec rake install`. To
 
 ## Contributing
 
-Bug reports and pull requests are welcome on GitHub at https://github.com/evil-metrics/evil-metrics-rails.
+Bug reports and pull requests are welcome on GitHub at https://github.com/yabeda-rb/yabeda-rails.
 
 ## License
 

bin/console

@@ -2,7 +2,7 @@
 # frozen_string_literal: true
 
 require "bundler/setup"
-require "evil/metrics/rails"
+require "yabeda/rails"
 
 # You can add fixtures and/or initialization code here to make experimenting
 # with your gem easier. You can also use a different console, if you like.

lib/yabeda/rails.rb

@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+require "yabeda"
+require "yabeda/rails/railtie"
+
+module Yabeda
+  module Rails
+    LONG_RUNNING_REQUEST_BUCKETS = [
+      0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10, # standard
+      30, 60, 120, 300, 600, # Sometimes requests may be really long-running
+    ].freeze
+
+    class << self
+      def controller_handlers
+        @controller_handlers ||= []
+      end
+
+      def on_controller_action(&block)
+        controller_handlers << block
+      end
+
+      def install!
+        Yabeda.configure do
+          group :rails
+
+          counter   :requests_total, comment: "A counter of the total number of HTTP requests rails processed."
+          histogram :request_duration, unit: :seconds, buckets: LONG_RUNNING_REQUEST_BUCKETS,
+                                       comment: "A histogram of the response latency."
+          histogram :view_runtime, unit: :seconds, buckets: LONG_RUNNING_REQUEST_BUCKETS,
+                                   comment: "A histogram of the view rendering time."
+          histogram :db_runtime, unit: :seconds, buckets: LONG_RUNNING_REQUEST_BUCKETS,
+                                 comment: "A histogram of the activerecord execution time."
+
+          ActiveSupport::Notifications.subscribe "process_action.action_controller" do |*args|
+            event = ActiveSupport::Notifications::Event.new(*args)
+            labels = {
+              controller: event.payload[:params]["controller"],
+              action: event.payload[:params]["action"],
+              status: event.payload[:status],
+              format: event.payload[:format],
+              method: event.payload[:method].downcase,
+            }
+
+            rails_requests_total.increment(labels)
+            rails_request_duration.measure(labels, Yabeda::Rails.ms2s(event.duration))
+            rails_view_runtime.measure(labels, Yabeda::Rails.ms2s(event.payload[:view_runtime]))
+            rails_db_runtime.measure(labels, Yabeda::Rails.ms2s(event.payload[:db_runtime]))
+
+            Yabeda::Rails.controller_handlers.each do |handler|
+              handler.call(event, labels)
+            end
+          end
+        end
+      end
+
+      def ms2s(ms)
+        (ms.to_f / 1000).round(3)
+      end
+    end
+  end
+end

lib/yabeda/rails/railtie.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Yabeda
+  module Rails
+    class Railtie < ::Rails::Railtie # :nodoc:
+      config.after_initialize do
+        next unless ::Rails.const_defined?(:Server)
+
+        ::Yabeda::Rails.install!
+      end
+    end
+  end
+end

lib/yabeda/rails/version.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module Yabeda
+  module Rails
+    VERSION = "0.1.1"
+  end
+end

spec/spec_helper.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 require "bundler/setup"
-require "evil/metrics/rails"
+require "yabeda/rails"
 
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure

spec/evil/prome/rails_spec.rb → spec/yabeda/rails_spec.rb

@@ -1,8 +1,8 @@
 # frozen_string_literal: true
 
-RSpec.describe Evil::Metrics::Rails do
+RSpec.describe Yabeda::Rails do
   it "has a version number" do
-    expect(Evil::Metrics::Rails::VERSION).not_to be nil
+    expect(Yabeda::Rails::VERSION).not_to be nil
   end
 
   it "does something useful" do

evil-metrics-rails.gemspec → yabeda-rails.gemspec

@@ -1,14 +1,18 @@
 # frozen_string_literal: true
 
+lib = File.expand_path("lib", __dir__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require "yabeda/rails/version"
+
 Gem::Specification.new do |spec|
-  spec.name          = "evil-metrics-rails"
-  spec.version       = "0.1.0"
+  spec.name          = "yabeda-rails"
+  spec.version       = Yabeda::Rails::VERSION
   spec.authors       = ["Andrey Novikov"]
   spec.email         = ["[email protected]"]
 
   spec.summary       = "Extensible metrics for monitoring Ruby on Rails application"
   spec.description   = "Easy collecting your Rails apps metrics"
-  spec.homepage      = "https://github.com/evil-metrics/evil-metrics-rails"
+  spec.homepage      = "https://github.com/yabeda-rb/yabeda-rails"
   spec.license       = "MIT"
 
   spec.files         = `git ls-files -z`.split("\x0").reject do |f|
@@ -18,7 +22,7 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_dependency "evil-metrics"
+  spec.add_dependency "yabeda"
   spec.add_dependency "rails"
 
   spec.add_development_dependency "bundler", "~> 1.16"