Add gem's initial codebase.

.github/workflows/ci.yml

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+name: CI
+
+on: pull_request
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    name: Linter
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Ruby and gems
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+      - name: Run RuboCop
+        run: bundle exec rubocop
+
+  test:
+    runs-on: ubuntu-latest
+    name: Ruby ${{ matrix.ruby }}
+    strategy:
+      matrix:
+        ruby:
+          - '3.0.0'
+          - '3.1.0'
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby }}
+        bundler-cache: true
+    - name: Run tests
+      run: bundle exec rake test
+
+  test-results:
+    name: Check test results
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check test results
+        run: test "${{ needs.test.result }}" = "success"

.gitignore

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+/.bundle/
+/.yardoc
+/_yardoc/
+/coverage/
+/doc/
+/pkg/
+/spec/reports/
+/tmp/

.rubocop.yml

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+require:
+  - rubocop-minitest
+  - rubocop-rake
+
+AllCops:
+  TargetRubyVersion: 3.0.0
+  NewCops: enable
+
+Layout/LineLength:
+  Max: 120
+
+Style/Documentation:
+  Enabled: false

.ruby-version

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+3.1.0

.yardopts

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+--markup markdown
+--markup-provider commonmarker
+--no-private
+-
+*.md

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## Unreleased
+
+No notable changes.

Gemfile

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+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gemspec
+
+gem 'bundler'
+gem 'commonmarker'
+gem 'minitest'
+gem 'minitest-reporters'
+gem 'pry'
+gem 'rake'
+gem 'rubocop'
+gem 'rubocop-minitest'
+gem 'rubocop-rake'
+gem 'timecop'
+gem 'webrick'
+gem 'yard'

Gemfile.lock

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+PATH
+  remote: .
+  specs:
+    mysql2-aws_rds_iam (0.1.0)
+      aws-sdk-rds (~> 1)
+      mysql2
+      zeitwerk (~> 2)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ansi (1.5.0)
+    ast (2.4.2)
+    aws-eventstream (1.2.0)
+    aws-partitions (1.767.0)
+    aws-sdk-core (3.173.0)
+      aws-eventstream (~> 1, >= 1.0.2)
+      aws-partitions (~> 1, >= 1.651.0)
+      aws-sigv4 (~> 1.5)
+      jmespath (~> 1, >= 1.6.1)
+    aws-sdk-rds (1.179.0)
+      aws-sdk-core (~> 3, >= 3.165.0)
+      aws-sigv4 (~> 1.1)
+    aws-sigv4 (1.5.2)
+      aws-eventstream (~> 1, >= 1.0.2)
+    builder (3.2.4)
+    coderay (1.1.3)
+    commonmarker (0.23.9)
+    jmespath (1.6.2)
+    json (2.6.3)
+    method_source (1.0.0)
+    minitest (5.18.0)
+    minitest-reporters (1.6.0)
+      ansi
+      builder
+      minitest (>= 5.0)
+      ruby-progressbar
+    mysql2 (0.5.5)
+    parallel (1.23.0)
+    parser (3.2.2.1)
+      ast (~> 2.4.1)
+    pry (0.14.2)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    rainbow (3.1.1)
+    rake (13.0.6)
+    regexp_parser (2.8.0)
+    rexml (3.2.5)
+    rubocop (1.51.0)
+      json (~> 2.3)
+      parallel (~> 1.10)
+      parser (>= 3.2.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.28.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.28.1)
+      parser (>= 3.2.1.0)
+    rubocop-minitest (0.31.0)
+      rubocop (>= 1.39, < 2.0)
+    rubocop-rake (0.6.0)
+      rubocop (~> 1.0)
+    ruby-progressbar (1.13.0)
+    timecop (0.9.6)
+    unicode-display_width (2.4.2)
+    webrick (1.8.1)
+    yard (0.9.34)
+    zeitwerk (2.6.8)
+
+PLATFORMS
+  ruby
+  x86_64-darwin-22
+
+DEPENDENCIES
+  bundler
+  commonmarker
+  minitest
+  minitest-reporters
+  mysql2-aws_rds_iam!
+  pry
+  rake
+  rubocop
+  rubocop-minitest
+  rubocop-rake
+  timecop
+  webrick
+  yard
+
+BUNDLED WITH
+   2.4.13

Rakefile

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+# frozen_string_literal: true
+
+require 'bundler/gem_tasks'
+require 'rake/testtask'
+require 'rubocop/rake_task'
+require 'yard'
+
+Rake::TestTask.new(:test) do |t|
+  t.description = 'Run tests'
+  t.libs << 'test'
+  t.test_files = FileList['test/**/test_*.rb']
+end
+
+desc 'Run linter'
+RuboCop::RakeTask.new
+
+desc 'Generate documentation'
+YARD::Rake::YardocTask.new
+
+task default: %i[test rubocop]

bin/console

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+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require 'bundler/setup'
+require 'mysql2/aws_rds_iam'
+
+# 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.
+
+require 'irb'
+IRB.start(__FILE__)

bin/setup

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+#!/usr/bin/env bash
+set -euo pipefail
+IFS=$'\n\t'
+set -vx
+
+bundle install
+
+# Do any other automated setup that you need to do here

lib/mysql2/aws_rds_iam.rb

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+# frozen_string_literal: true
+
+require 'mysql2'
+require 'zeitwerk'
+
+loader = Zeitwerk::Loader.for_gem_extension(Mysql2)
+loader.setup
+
+module Mysql2
+  module AwsRdsIam
+  end
+end

lib/mysql2/aws_rds_iam/version.rb

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+# frozen_string_literal: true
+
+module Mysql2
+  module AwsRdsIam
+    VERSION = '0.1.0'
+  end
+end

mysql2-aws_rds_iam.gemspec

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+# frozen_string_literal: true
+
+require_relative 'lib/mysql2/aws_rds_iam/version'
+
+Gem::Specification.new do |spec|
+  spec.name = 'mysql2-aws_rds_iam'
+  spec.version = Mysql2::AwsRdsIam::VERSION
+  spec.authors = ['Taras Shpachenko']
+  spec.email = ['[email protected]']
+
+  spec.summary = 'AWS RDS IAM authentication for MySQL'
+  spec.description = 'Mysql2::AwsRdsIam is an extension of mysql2 gem that adds support ' \
+                     'of IAM authentication when connecting to MySQL in Amazon RDS.'
+  spec.homepage = 'https://github.com/floor114/mysql2-aws_rds_iam'
+  spec.license = 'MIT'
+
+  spec.required_ruby_version = '>= 3.0.0'
+
+  spec.metadata['rubygems_mfa_required'] = 'true'
+
+  spec.metadata['homepage_uri'] = spec.homepage
+  spec.metadata['source_code_uri'] = spec.homepage
+  spec.metadata['changelog_uri'] = "#{spec.homepage}/blob/main/CHANGELOG.md"
+  spec.metadata['bug_tracker_uri'] = "#{spec.homepage}/issues"
+  spec.metadata['documentation_uri'] = "https://rubydoc.info/gems/mysql2-aws_rds_iam/#{Mysql2::AwsRdsIam::VERSION}"
+
+  spec.files = Dir[
+    'lib/**/*.rb',
+    '.yardopts',
+    'CHANGELOG.md',
+    'LICENSE.txt',
+    'mysql2-aws_rds_iam.gemspec',
+    'README.md'
+  ]
+  spec.require_paths = ['lib']
+
+  # Uncomment to register a new dependency of your gem
+  spec.add_dependency 'aws-sdk-rds', '~> 1'
+  spec.add_dependency 'mysql2'
+  spec.add_dependency 'zeitwerk', '~> 2'
+end

test/mysql2/test_aws_rds_iam.rb

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+# frozen_string_literal: true
+
+require 'test_helper'
+
+module Mysql2
+  class TestAwsRdsIam < Minitest::Test
+    def test_that_it_has_a_version_number
+      refute_nil ::Mysql2::AwsRdsIam::VERSION
+    end
+
+    def test_it_does_something_useful
+      assert 'false' # rubocop:disable Minitest/UselessAssertion
+    end
+  end
+end

test/test_helper.rb

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+# frozen_string_literal: true
+
+$LOAD_PATH.unshift File.expand_path('../lib', __dir__)
+require 'mysql2/aws_rds_iam'
+
+require 'minitest/reporters'
+Minitest::Reporters.use!(Minitest::Reporters::SpecReporter.new)
+
+require 'timecop'
+Timecop.safe_mode = true
+
+require 'minitest/autorun'