Test against current and next Ruby and Rails versions

.github/workflows/ci.yml

@@ -0,0 +1,57 @@
+on:
+  push:
+    branches: [master]
+
+  pull_request:
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    continue-on-error: ${{ endsWith(matrix.ruby, 'head') || matrix.gemfile == 'gemfiles/rails_edge.gemfile' }}
+
+    strategy:
+      matrix:
+        ruby:
+          # MRI
+          - head
+          - "3.1.0-preview1"
+          - "3.0"
+          - "2.7"
+
+          # JRuby
+          - jruby-head
+          - jruby-9.3
+          - jruby-9.2
+
+          # TruffleRuby
+          - truffleruby-head
+          - truffleruby-21.3
+
+        gemfile:
+          - Gemfile
+          - gemfiles/rails_edge.gemfile
+          - gemfiles/rails_6.0.gemfile
+          - gemfiles/rails_5.2.gemfile
+
+        # Include additional ruby/gemfile combinations:
+        include:
+          # NOTE(ivy): Rails 7 requires Ruby version >= 2.7
+          - ruby: "2.6"
+            gemfile: Gemfile
+          - ruby: "2.6"
+            gemfile: gemfiles/rails_6.0.gemfile
+          - ruby: "2.6"
+            gemfile: gemfiles/rails_5.2.gemfile
+
+    env:
+      BUNDLE_GEMFILE: ${{ github.workspace }}/${{ matrix.gemfile }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+
+      - run: bundle exec rake

.gitignore

@@ -1,5 +1,6 @@
 *.gem
 .bundle
 Gemfile.lock
+coverage
 gemfiles/*.lock
 pkg/*

.rubocop.yml

@@ -1,15 +1,25 @@
-LineLength:
+AllCops:
+  Exclude:
+    - Guardfile
+    - vendor/**/*
+  NewCops: enable
+
+Layout/LineLength:
   Max: 120
 
-Documentation:
+Lint/AmbiguousBlockAssociation:
+  Exclude:
+    - spec/**/*_spec.rb
+
+Metrics/AbcSize:
   Enabled: false
 
-AllCops:
+Metrics/BlockLength:
   Exclude:
-    - 'Guardfile'
+    - spec/**/*_spec.rb
 
-Metrics/AbcSize:
+Style/BlockDelimiters:
   Enabled: false
 
-Style/EmptyMethod:
+Style/Documentation:
   Enabled: false

Gemfile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in lograge.gemspec
@@ -6,13 +8,14 @@ gemspec
 gem 'pry', group: :development
 
 group :test do
-  gem 'actionpack', '~> 5'
-  gem 'activerecord', '~> 5'
+  gem 'actionpack', '~> 6'
+  gem 'activerecord', '~> 6'
   # logstash does not release any gems on rubygems, but they have two gemspecs within their repo.
   # Using the tag is an attempt of having a stable version to test against where we can ensure that
   # we test against the correct code.
   gem 'logstash-event', git: 'https://github.com/elastic/logstash', tag: 'v1.5.4'
   # logstash 1.5.4 is only supported with jrjackson up to  0.2.9
   gem 'jrjackson', '~> 0.2.9', platforms: :jruby
   gem 'lines'
+  gem 'thread_safe'
 end

README.md

@@ -1,8 +1,7 @@
-[![Build Status](https://travis-ci.org/roidrage/lograge.svg?branch=master)](https://travis-ci.org/roidrage/lograge)
+[![.github/workflows/ci.yml](https://github.com/roidrage/lograge/actions/workflows/ci.yml/badge.svg)](https://github.com/roidrage/lograge/actions/workflows/ci.yml)
 [![Gem Version](https://badge.fury.io/rb/lograge.svg)](http://badge.fury.io/rb/lograge)
 
-Lograge - Taming Rails' Default Request Logging
-=======
+# Lograge - Taming Rails' Default Request Logging #
 
 Lograge is an attempt to bring sanity to Rails' noisy and unusable, unparsable
 and, in the context of running multiple processes and servers, unreadable
@@ -45,6 +44,17 @@ relevant information as simple key-value pairs. The syntax is heavily inspired
 by the log output of the Heroku router. It doesn't include any timestamp by
 default, instead it assumes you use a proper log formatter instead.
 
+## Supported Ruby and Rails Releases ##
+
+Lograge is actively tested against current and officially supported Ruby and
+Rails releases. That said, Lograge _should_ work with older releases.
+
+- [Rails](https://endoflife.date/rails): Edge, 6.1, 6.0, 5.2
+- Rubies:
+  - [MRI](https://endoflife.date/ruby): HEAD, 3.1.0-preview1, 3.0, 2.7, 2.6
+  - JRuby: HEAD, 9.2, 9.1
+  - TruffleRuby: HEAD, 21.3
+
 ## Installation ##
 
 In your Gemfile

Rakefile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'bundler/gem_tasks'
 
 require 'rspec/core/rake_task'
@@ -7,6 +9,6 @@ require 'rubocop/rake_task'
 RuboCop::RakeTask.new
 
 desc 'Run specs, rubocop and reek'
-task ci: %w(spec rubocop)
+task ci: %w[spec rubocop]
 
 task default: :ci

gemfiles/Gemfile.actionpack5.2 → gemfiles/rails_5.2.gemfile

@@ -1,11 +1,13 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in lograge.gemspec
 gemspec path: '..'
 
 group :test do
-  gem 'activerecord', '~> 5.2.0'
   gem 'actionpack', '~> 5.2.0'
+  gem 'activerecord', '~> 5.2.0'
 
   # logstash does not release any gems on rubygems, but they have two gemspecs within their repo.
   # Using the tag is an attempt of having a stable version to test against where we can ensure that

gemfiles/Gemfile.actionpack5.0 → gemfiles/rails_6.0.gemfile

@@ -1,12 +1,13 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in lograge.gemspec
 gemspec path: '..'
 
 group :test do
-  gem 'activerecord', '~> 5.0.0'
-  gem 'actionpack', '~> 5.0.0'
-
+  gem 'actionpack', '~> 6.0.0'
+  gem 'activerecord', '~> 6.0.0'
   # logstash does not release any gems on rubygems, but they have two gemspecs within their repo.
   # Using the tag is an attempt of having a stable version to test against where we can ensure that
   # we test against the correct code.

gemfiles/Gemfile.actionpack5.1 → gemfiles/rails_edge.gemfile

@@ -1,17 +1,19 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in lograge.gemspec
 gemspec path: '..'
 
 group :test do
-  gem 'activerecord', '~> 5.1.0'
-  gem 'actionpack', '~> 5.1.0'
-
+  gem 'actionpack', github: 'rails/rails'
+  gem 'activerecord', github: 'rails/rails'
   # logstash does not release any gems on rubygems, but they have two gemspecs within their repo.
   # Using the tag is an attempt of having a stable version to test against where we can ensure that
   # we test against the correct code.
   gem 'logstash-event', git: 'https://github.com/elastic/logstash', tag: 'v1.5.4'
   # logstash 1.5.4 is only supported with jrjackson up to  0.2.9
   gem 'jrjackson', '~> 0.2.9', platforms: :jruby
   gem 'lines'
+  gem 'thread_safe'
 end

lib/lograge.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'lograge/version'
 require 'lograge/formatters/helpers/method_and_path'
 require 'lograge/formatters/cee'
@@ -17,7 +19,7 @@
 require 'active_support/core_ext/module/attribute_accessors'
 require 'active_support/core_ext/string/inflections'
 
-# rubocop:disable ModuleLength
+# rubocop:disable Metrics/ModuleLength
 module Lograge
   module_function
 
@@ -117,9 +119,7 @@ def unsubscribe(component, subscriber)
     events = subscriber.public_methods(false).reject { |method| method.to_s == 'call' }
     events.each do |event|
       ActiveSupport::Notifications.notifier.listeners_for("#{event}.#{component}").each do |listener|
-        if listener.instance_variable_get('@delegate') == subscriber
-          ActiveSupport::Notifications.unsubscribe listener
-        end
+        ActiveSupport::Notifications.unsubscribe listener if listener.instance_variable_get('@delegate') == subscriber
       end
     end
   end
@@ -203,7 +203,7 @@ def keep_original_rails_log
   end
 
   def rack_cache_hashlike?(app)
-    app.config.action_dispatch.rack_cache && app.config.action_dispatch.rack_cache.respond_to?(:[]=)
+    app.config.action_dispatch.rack_cache&.respond_to?(:[]=)
   end
   private_class_method :rack_cache_hashlike?
 
@@ -223,5 +223,6 @@ def lograge_config
     application.config.lograge
   end
 end
+# rubocop:enable Metrics/ModuleLength
 
 require 'lograge/railtie' if defined?(Rails)

lib/lograge/formatters/cee.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Lograge
   module Formatters
     class Cee

lib/lograge/formatters/graylog2.rb

@@ -1,23 +1,15 @@
+# frozen_string_literal: true
+
 module Lograge
   module Formatters
     class Graylog2
       include Lograge::Formatters::Helpers::MethodAndPath
 
       def call(data)
-        # Cloning because we don't want to mess with the original when mutating keys.
-        data_clone = data.clone
-
-        base = {
-          short_message: short_message(data_clone)
-        }
-
         # Add underscore to every key to follow GELF additional field syntax.
-        data_clone.keys.each do |key|
-          data_clone[underscore_prefix(key)] = data_clone[key]
-          data_clone.delete(key)
-        end
-
-        data_clone.merge(base)
+        data.transform_keys { |k| underscore_prefix(k) }.merge(
+          short_message: short_message(data)
+        )
       end
 
       def underscore_prefix(key)

lib/lograge/formatters/helpers/method_and_path.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Lograge
   module Formatters
     module Helpers

lib/lograge/formatters/json.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'json'
 module Lograge
   module Formatters

lib/lograge/formatters/key_value.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Lograge
   module Formatters
     class KeyValue

lib/lograge/formatters/l2met.rb

@@ -1,24 +1,26 @@
+# frozen_string_literal: true
+
 require 'lograge/formatters/key_value'
 
 module Lograge
   module Formatters
     class L2met < KeyValue
-      L2MET_FIELDS = [
-        :method,
-        :path,
-        :format,
-        :source,
-        :status,
-        :error,
-        :duration,
-        :view,
-        :db,
-        :location
+      L2MET_FIELDS = %i[
+        method
+        path
+        format
+        source
+        status
+        error
+        duration
+        view
+        db
+        location
       ].freeze
 
-      UNWANTED_FIELDS = [
-        :controller,
-        :action
+      UNWANTED_FIELDS = %i[
+        controller
+        action
       ].freeze
 
       def call(data)