add github actions (#5)

Change-Id: I35c5a22f8902f746f1e4a2651c3221ae0bf7db17

.github/workflows/push.yml

@@ -0,0 +1,64 @@
+name: Continuous Integration
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby-version: [2.7, "3.0", 3.1, 3.2]
+        lockfile: ['Gemfile.activerecord-6.1.lock', 'Gemfile.activerecord-7.0.lock', 'Gemfile.lock']
+
+    services:
+      postgres:
+        image: postgres
+        env:
+          POSTGRES_PASSWORD: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+          rubygems: latest
+          bundler-cache: true
+        env:
+          BUNDLE_NO_PRUNE: true
+      - name: Run tests
+        run: bin/rake db:create db:migrate spec
+        env:
+          BUNDLE_LOCKFILE: ${{ matrix.lockfile }}
+          PGHOST: localhost
+          PGPASSWORD: postgres
+          PGUSER: postgres
+          RAILS_ENV: test
+
+  lint:
+    runs-on: ubuntu-latest
+    env:
+      BUNDLE_LOCKFILE: "Gemfile.lock"
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 2.7
+          bundler-cache: true
+      - name: Run RuboCop
+        run: bin/rubocop
+        timeout-minutes: 2

.rubocop.yml

@@ -13,6 +13,7 @@ AllCops:
   Exclude:
     - 'bin/*'
     - 'gemfiles/*'
+    - 'vendor/**/*'
 
 Bundler/DuplicatedGem:
   Enabled: false

bin/rake

@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'rake' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300).include?("This file was generated by Bundler")
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("rake", "rake")

lib/switchman_inst_jobs/switchman/shard.rb

@@ -120,8 +120,7 @@ def delayed_jobs_shards
           scope = scope.or(::Switchman::Shard.unscoped.where(id: db_jobs_shards)) unless db_jobs_shards.empty?
 
           if has_self
-            self_dbs = ::Switchman::DatabaseServer.all
-                                                  .select { |db| db.config[:delayed_jobs_shard] == "self" }.map(&:id)
+            self_dbs = ::Switchman::DatabaseServer.select { |db| db.config[:delayed_jobs_shard] == "self" }.map(&:id)
             scope = scope.or(::Switchman::Shard.unscoped
               .where(id: ::Switchman::Shard.unscoped.where(delayed_jobs_shard_id: nil, database_server_id: self_dbs)
               .select(:id)))