Drop support for MRI < 2.2

Author: dmke

.rubocop.yml

@@ -9,7 +9,7 @@ AllCops:
   - 'smoke/**/*'
   DisplayCopNames: true
   StyleGuideCopsOnly: false
-  TargetRubyVersion: 1.9
+  TargetRubyVersion: 2.2
 
 Rails:
   Enabled: false

.travis.yml

@@ -7,12 +7,9 @@ before_install:
   - gem update bundler --no-doc
   - smoke/provision.sh
 rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1.10
   - 2.2.5
   - 2.3.3
-  - 2.4.0
+  - 2.4.1
   - ruby-head
 env:
   - TEST_TASK=spec
@@ -22,23 +19,23 @@ matrix:
     - rvm: jruby-head
     - rvm: ruby-head
     - rvm: jruby-9.1.5.0
-    - rvm: 2.4.0
+    - rvm: 2.4.1
       env: TEST_TASK=smoke influx_version=nightly channel=nightlies
   include:
-    - rvm: 2.4.0
+    - rvm: 2.4.1
       env: TEST_TASK=rubocop
     - rvm: jruby-9.1.5.0
     - rvm: jruby-head
       env: JRUBY_OPTS='--client -J-XX:+TieredCompilation -J-XX:TieredStopAtLevel=1 -J-Xss2m -J-Xmx256M'
-    - rvm: 2.4.0
+    - rvm: 2.4.1
       env: TEST_TASK=smoke influx_version=1.0.2 pkghash=3e4c349cb57507913d9abda1459bdbed
-    - rvm: 2.4.0
+    - rvm: 2.4.1
       env: TEST_TASK=smoke influx_version=1.1.0 pkghash=682904c350ecfc2a60ec9c6c08453ef2
-    - rvm: 2.4.0
+    - rvm: 2.4.1
       env: TEST_TASK=smoke influx_version=1.2.4 pkghash=0545d67217393282188e5d5cdedfdc85
-    - rvm: 2.4.0
+    - rvm: 2.4.1
       env: TEST_TASK=smoke influx_version=1.3.2 pkghash=27b200344bed9de9df193b62a59d378f
-    - rvm: 2.4.0
+    - rvm: 2.4.1
       env: TEST_TASK=smoke influx_version=nightly channel=nightlies
   fail_fast: true
 addons:

CHANGELOG.md

@@ -4,7 +4,7 @@ For the full commit log, [see here](https://github.com/influxdata/influxdb-ruby/
 
 ## Unreleased changes
 
-- nothing yet
+- **Dropped support for Ruby < 2.2**
 
 ## v0.3.16, released 2017-08-17
 

Gemfile

@@ -1,10 +1,5 @@
 source "https://rubygems.org"
 
-if RUBY_ENGINE != "jruby" && RUBY_VERSION < "2.0"
-  gem "json", "~> 1.8.3"
-  gem "public_suffix", "< 1.5"
-end
-
 gemspec
 
 local_gemfile = 'Gemfile.local'

README.md

@@ -38,14 +38,9 @@ Maintained by [@toddboom](https://github.com/toddboom) and [@dmke](https://githu
 
 ## Ruby support
 
-Up to and including version 0.3.x, this gem will work with Ruby 1.9+. Starting
-with 0.4.0, only Ruby 2.2+ will be supported.
-
-To read the documentation for 0.3.x, see the [stable-03 branch](https://github.com/influxdata/influxdb-ruby/tree/stable-03).
-
-Please note that for Ruby 1.9, you'll need to install the JSON gem in version
-1.8.x yourself, for example by pinning the version in your `Gemfile` (i.e.
-`gem "json", "~> 1.8.3"`).
+Since v0.4.0, this gem requires Ruby >= 2.2.0. Support for MRI < 2.2 is
+still available in the v0.3.x series, see [stable-03 branch](https://github.com/influxdata/influxdb-ruby/tree/stable-03)
+for documentation.
 
 ## Installation
 

influxdb.gemspec

@@ -19,13 +19,11 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features|smoke)/})
   spec.require_paths = ["lib"]
 
-  spec.add_runtime_dependency "json"
-  spec.post_install_message = "Heads up: version 0.4 will drop support for MRI <= 2.1"
+  spec.required_ruby_version = ">= 2.2.0"
 
   spec.add_development_dependency "rake"
   spec.add_development_dependency "bundler",  "~> 1.3"
   spec.add_development_dependency "rspec",    "~> 3.5.0"
   spec.add_development_dependency "webmock",  "~> 2.1.0"
   spec.add_development_dependency "rubocop",  "~> 0.41.2"
-  spec.add_development_dependency "cause"
 end

spec/spec_helper.rb

@@ -1,12 +1,12 @@
 require "influxdb"
 require "webmock/rspec"
-require "cause" unless Exception.instance_methods.include?(:cause)
 
+# rubocop:disable Lint/HandleExceptions
 begin
-  # rubocop:disable Lint/HandleExceptions
   require "pry-byebug"
 rescue LoadError
 end
+# rubocop:enable Lint/HandleExceptions
 
 RSpec.configure do |config|
   config.color = ENV["TRAVIS"] != "true"
@@ -17,6 +17,7 @@
   else
     config.formatter = :progress
   end
+  # rubocop:enable Style/ConditionalAssignment
 
   if ENV["LOG"]
     Dir.mkdir("tmp") unless Dir.exist?("tmp")