Fix column collations and table default collation in a migration

cookpad · Apr 16, 2024 · 09300dd · 09300dd
1 parent 79f25d3
commit 09300dd
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diff --git a/db/migrate/20240415080757_fix_collations.rb b/db/migrate/20240415080757_fix_collations.rb
@@ -0,0 +1,34 @@
+# In MySQL 8.0, the default collation for utf8mb4 is changed to utf8mb4_0900_ai_ci.
+# The column collations are utf8mb4_0900_ai_ci after we ran migrations prior to this
+# on MySQL 8.0 because we did not specify collation in create_table (thus the default is used).
+# This happens on testing/development but we want to keep utf8mb4_general_ci.
+#
+# Note that running this should not affect the actual schema and data
+# unless you've ran prior migrations on MySQL 8.0.
+class FixCollations < ActiveRecord::Migration[6.1]
+  def change
+    reversible do |direction|
+      direction.up do
+        # alter column collations and default collation of every tables defined to utf8mb4_general_ci
+        execute 'ALTER TABLE barbeque_apps CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+        execute 'ALTER TABLE barbeque_docker_containers CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+        execute 'ALTER TABLE barbeque_ecs_hako_tasks CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+        execute 'ALTER TABLE barbeque_job_executions CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+        execute 'ALTER TABLE barbeque_job_queues CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+        execute 'ALTER TABLE barbeque_job_retries CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+        execute 'ALTER TABLE barbeque_retry_configs CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+        execute 'ALTER TABLE barbeque_slack_notifications CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+        execute 'ALTER TABLE barbeque_sns_subscriptions CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+
+        # barbeque_job_definitions contains a column with explicitly specified collation
+        execute 'ALTER TABLE barbeque_job_definitions DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci'
+        change_column :barbeque_job_definitions, :command, :string, collation: 'utf8mb4_general_ci'
+        change_column :barbeque_job_definitions, :description, :text, collation: 'utf8mb4_general_ci'
+      end
+
+      direction.down do
+        raise ActiveRecord::IrreversibleMigration
+      end
+    end
+  end
+end
diff --git a/spec/dummy/db/schema.rb b/spec/dummy/db/schema.rb
@@ -2,17 +2,17 @@
 # of editing this file, please use the migrations feature of Active Record to
 # incrementally modify your database, and then regenerate this schema definition.
 #
-# Note that this schema.rb definition is the authoritative source for your
-# database schema. If you need to create the application database on another
-# system, you should be using db:schema:load, not running all the migrations
-# from scratch. The latter is a flawed and unsustainable approach (the more migrations
-# you'll amass, the slower it'll run and the greater likelihood for issues).
+# This file is the source Rails uses to define your schema when running `bin/rails
+# db:schema:load`. When creating a new database, `bin/rails db:schema:load` tends to
+# be faster and is potentially less error prone than running all of your
+# migrations from scratch. Old migrations may fail to apply correctly if those
+# migrations use external dependencies or application code.
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2019_10_29_105530) do
+ActiveRecord::Schema.define(version: 2024_04_15_080757) do
 
-  create_table "barbeque_apps", id: :integer, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC", force: :cascade do |t|
+  create_table "barbeque_apps", id: :integer, charset: "utf8mb4", collation: "utf8mb4_general_ci", options: "ENGINE=InnoDB ROW_FORMAT=DYNAMIC", force: :cascade do |t|
     t.string "name", null: false
     t.string "docker_image", null: false
     t.text "description"
@@ -21,15 +21,15 @@
     t.index ["name"], name: "index_barbeque_apps_on_name", unique: true
   end
 
-  create_table "barbeque_docker_containers", id: :integer, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC", force: :cascade do |t|
+  create_table "barbeque_docker_containers", id: :integer, charset: "utf8mb4", collation: "utf8mb4_general_ci", options: "ENGINE=InnoDB ROW_FORMAT=DYNAMIC", force: :cascade do |t|
     t.string "message_id", null: false
     t.string "container_id", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.index ["message_id"], name: "index_barbeque_docker_containers_on_message_id", unique: true
   end
 
-  create_table "barbeque_ecs_hako_tasks", id: :integer, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC", force: :cascade do |t|
+  create_table "barbeque_ecs_hako_tasks", id: :integer, charset: "utf8mb4", collation: "utf8mb4_general_ci", options: "ENGINE=InnoDB ROW_FORMAT=DYNAMIC", force: :cascade do |t|
     t.string "message_id", null: false
     t.string "cluster", null: false
     t.string "task_arn", null: false
@@ -38,7 +38,7 @@
     t.index ["message_id"], name: "index_barbeque_ecs_hako_tasks_on_message_id", unique: true
   end
 
-  create_table "barbeque_job_definitions", id: :integer, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC", force: :cascade do |t|
+  create_table "barbeque_job_definitions", id: :integer, charset: "utf8mb4", collation: "utf8mb4_general_ci", options: "ENGINE=InnoDB ROW_FORMAT=DYNAMIC", force: :cascade do |t|
     t.string "job", null: false, collation: "utf8mb4_bin"
     t.integer "app_id", null: false
     t.string "command", null: false
@@ -48,7 +48,7 @@
     t.index ["job", "app_id"], name: "index_barbeque_job_definitions_on_job_and_app_id", unique: true
   end
 
-  create_table "barbeque_job_executions", id: :integer, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC", force: :cascade do |t|
+  create_table "barbeque_job_executions", id: :integer, charset: "utf8mb4", collation: "utf8mb4_general_ci", options: "ENGINE=InnoDB ROW_FORMAT=DYNAMIC", force: :cascade do |t|
     t.string "message_id", null: false
     t.integer "status", default: 0, null: false
     t.datetime "created_at", null: false
@@ -62,7 +62,7 @@
     t.index ["status"], name: "index_barbeque_job_executions_on_status"
   end
 
-  create_table "barbeque_job_queues", id: :integer, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC", force: :cascade do |t|
+  create_table "barbeque_job_queues", id: :integer, charset: "utf8mb4", collation: "utf8mb4_general_ci", options: "ENGINE=InnoDB ROW_FORMAT=DYNAMIC", force: :cascade do |t|
     t.string "name", null: false
     t.text "description"
     t.string "queue_url", null: false
@@ -71,7 +71,7 @@
     t.index ["name"], name: "index_barbeque_job_queues_on_name", unique: true
   end
 
-  create_table "barbeque_job_retries", id: :integer, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC", force: :cascade do |t|
+  create_table "barbeque_job_retries", id: :integer, charset: "utf8mb4", collation: "utf8mb4_general_ci", options: "ENGINE=InnoDB ROW_FORMAT=DYNAMIC", force: :cascade do |t|
     t.string "message_id", null: false
     t.integer "job_execution_id", null: false
     t.integer "status", default: 0, null: false
@@ -82,7 +82,7 @@
     t.index ["status"], name: "index_barbeque_job_retries_on_status"
   end
 
-  create_table "barbeque_retry_configs", options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC", force: :cascade do |t|
+  create_table "barbeque_retry_configs", charset: "utf8mb4", collation: "utf8mb4_general_ci", options: "ENGINE=InnoDB ROW_FORMAT=DYNAMIC", force: :cascade do |t|
     t.integer "job_definition_id", null: false
     t.integer "retry_limit", default: 3, null: false
     t.float "base_delay", default: 15.0, null: false
@@ -93,7 +93,7 @@
     t.index ["job_definition_id"], name: "index_barbeque_retry_configs_on_job_definition_id", unique: true
   end
 
-  create_table "barbeque_slack_notifications", id: :integer, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 ROW_FORMAT=DYNAMIC", force: :cascade do |t|
+  create_table "barbeque_slack_notifications", id: :integer, charset: "utf8mb4", collation: "utf8mb4_general_ci", options: "ENGINE=InnoDB ROW_FORMAT=DYNAMIC", force: :cascade do |t|
     t.integer "job_definition_id"
     t.string "channel", null: false
     t.boolean "notify_success", default: false, null: false
@@ -103,7 +103,7 @@
     t.boolean "notify_failure_only_if_retry_limit_reached", default: false, null: false
   end
 
-  create_table "barbeque_sns_subscriptions", id: :integer, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8", force: :cascade do |t|
+  create_table "barbeque_sns_subscriptions", id: :integer, charset: "utf8mb4", collation: "utf8mb4_general_ci", force: :cascade do |t|
     t.string "topic_arn", null: false
     t.integer "job_queue_id", null: false
     t.integer "job_definition_id", null: false