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Set charset/collation properly for each text column if using MySQL.

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With this change, Huginn is able to store up to 4-byte UTF-8 characters
in its database.  This should fix #286.
This commit is contained in:
Akinori MUSHA 2014-07-25 17:32:53 +09:00
parent 6d1caa4420
commit db792cdd82
4 changed files with 191 additions and 34 deletions
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3
config/initializers/ar_mysql_column_charset.rb Normal file
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@ -0,0 +1,3 @@
ActiveSupport.on_load :active_record do
require 'ar_mysql_column_charset'
end

74
db/migrate/20140813110107_set_charset_for_mysql.rb Normal file
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@ -0,0 +1,74 @@
class SetCharsetForMysql < ActiveRecord::Migration
def all_models
@all_models ||= [
Agent,
AgentLog,
Contact,
Event,
Link,
Scenario,
ScenarioMembership,
User,
UserCredential,
Delayed::Job,
]
end
def change
conn = ActiveRecord::Base.connection
# This is migration is for MySQL only.
return unless conn.is_a?(ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter)
reversible do |dir|
dir.up do
all_models.each { |model|
table_name = model.table_name
# `contacts` may not exist
next unless connection.table_exists? table_name
model.columns.each { |column|
name = column.name
type = column.type
limit = column.limit
options = {
limit: limit,
null: column.null,
default: column.default,
}
case type
when :string, :text
options.update(charset: 'utf8', collation: 'utf8_general_ci')
case name
when 'username'
options.update(limit: 767 / 4, charset: 'utf8mb4', collation: 'utf8mb4_general_ci')
when 'message', 'options', 'name', 'memory',
'handler', 'last_error', 'payload', 'description'
options.update(charset: 'utf8mb4', collation: 'utf8mb4_bin')
when 'type', 'schedule', 'mode', 'email',
'invitation_code', 'reset_password_token'
options.update(collation: 'utf8_bin')
when 'guid', 'encrypted_password'
options.update(charset: 'ascii', collation: 'ascii_bin')
end
else
next
end
change_column table_name, name, type, options
}
execute 'ALTER TABLE %s CHARACTER SET utf8 COLLATE utf8_general_ci' % table_name
}
execute 'ALTER DATABASE %s CHARACTER SET utf8 COLLATE utf8_general_ci' % conn.current_database
end
dir.down do
# Do nada; no use to go back
end
end
end
end

68
db/schema.rb
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@ -11,14 +11,14 @@
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 20140723110551) do
ActiveRecord::Schema.define(version: 20140813110107) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
create_table "agent_logs", force: true do |t|
t.integer "agent_id", null: false
t.text "message", null: false
t.text "message", limit: 16777215, null: false, charset: "utf8mb4", collation: "utf8mb4_bin"
t.integer "level", default: 3, null: false
t.integer "inbound_event_id"
t.integer "outbound_event_id"
@ -28,17 +28,17 @@ ActiveRecord::Schema.define(version: 20140723110551) do
create_table "agents", force: true do |t|
t.integer "user_id"
t.text "options"
t.string "type"
t.string "name"
t.string "schedule"
t.text "options", limit: 16777215, charset: "utf8mb4", collation: "utf8mb4_bin"
t.string "type", collation: "utf8_bin"
t.string "name", charset: "utf8mb4", collation: "utf8mb4_bin"
t.string "schedule", collation: "utf8_bin"
t.integer "events_count"
t.datetime "last_check_at"
t.datetime "last_receive_at"
t.integer "last_checked_event_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.text "memory"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.text "memory", limit: 2147483647, charset: "utf8mb4", collation: "utf8mb4_bin"
t.datetime "last_web_request_at"
t.integer "keep_events_for", default: 0, null: false
t.datetime "last_event_at"
@ -46,7 +46,7 @@ ActiveRecord::Schema.define(version: 20140723110551) do
t.boolean "propagate_immediately", default: false, null: false
t.boolean "disabled", default: false, null: false
t.integer "service_id"
t.string "guid", null: false
t.string "guid", null: false, charset: "ascii", collation: "ascii_bin"
end
add_index "agents", ["guid"], name: "index_agents_on_guid", using: :btree
@ -55,10 +55,10 @@ ActiveRecord::Schema.define(version: 20140723110551) do
add_index "agents", ["user_id", "created_at"], name: "index_agents_on_user_id_and_created_at", using: :btree
create_table "delayed_jobs", force: true do |t|
t.integer "priority", default: 0
t.integer "attempts", default: 0
t.text "handler"
t.text "last_error"
t.integer "priority", default: 0
t.integer "attempts", default: 0
t.text "handler", limit: 16777215, charset: "utf8mb4", collation: "utf8mb4_bin"
t.text "last_error", limit: 16777215, charset: "utf8mb4", collation: "utf8mb4_bin"
t.datetime "run_at"
t.datetime "locked_at"
t.datetime "failed_at"
@ -73,11 +73,11 @@ ActiveRecord::Schema.define(version: 20140723110551) do
create_table "events", force: true do |t|
t.integer "user_id"
t.integer "agent_id"
t.decimal "lat", precision: 15, scale: 10
t.decimal "lng", precision: 15, scale: 10
t.text "payload"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.decimal "lat", precision: 15, scale: 10
t.decimal "lng", precision: 15, scale: 10
t.text "payload", limit: 2147483647, charset: "utf8mb4", collation: "utf8mb4_bin"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.datetime "expires_at"
end
@ -107,13 +107,13 @@ ActiveRecord::Schema.define(version: 20140723110551) do
add_index "scenario_memberships", ["scenario_id"], name: "index_scenario_memberships_on_scenario_id", using: :btree
create_table "scenarios", force: true do |t|
t.string "name", null: false
t.string "name", null: false, charset: "utf8mb4", collation: "utf8mb4_bin"
t.integer "user_id", null: false
t.datetime "created_at"
t.datetime "updated_at"
t.text "description"
t.text "description", charset: "utf8mb4", collation: "utf8mb4_bin"
t.boolean "public", default: false, null: false
t.string "guid", null: false
t.string "guid", null: false, charset: "ascii", collation: "ascii_bin"
t.string "source_url"
end
@ -142,31 +142,31 @@ ActiveRecord::Schema.define(version: 20140723110551) do
t.text "credential_value", null: false
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "mode", default: "text", null: false
t.string "mode", default: "text", null: false, collation: "utf8_bin"
end
add_index "user_credentials", ["user_id", "credential_name"], name: "index_user_credentials_on_user_id_and_credential_name", unique: true, using: :btree
create_table "users", force: true do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.string "email", default: "", null: false, collation: "utf8_bin"
t.string "encrypted_password", default: "", null: false, charset: "ascii", collation: "ascii_bin"
t.string "reset_password_token", collation: "utf8_bin"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.integer "sign_in_count", default: 0
t.integer "sign_in_count", default: 0
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.boolean "admin", default: false, null: false
t.integer "failed_attempts", default: 0
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.boolean "admin", default: false, null: false
t.integer "failed_attempts", default: 0
t.string "unlock_token"
t.datetime "locked_at"
t.string "username", null: false
t.string "invitation_code", null: false
t.integer "scenario_count", default: 0, null: false
t.string "username", limit: 191, null: false, charset: "utf8mb4", collation: "utf8mb4_general_ci"
t.string "invitation_code", null: false, collation: "utf8_bin"
t.integer "scenario_count", default: 0, null: false
end
add_index "users", ["email"], name: "index_users_on_email", unique: true, using: :btree

80
lib/ar_mysql_column_charset.rb Normal file
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@ -0,0 +1,80 @@
require 'active_record'
module ActiveRecord::ConnectionAdapters
class ColumnDefinition
module CharsetSupport
attr_accessor :charset, :collation
end
prepend CharsetSupport
end
class TableDefinition
module CharsetSupport
def new_column_definition(name, type, options)
column = super
column.charset = options[:charset]
column.collation = options[:collation]
column
end
end
prepend CharsetSupport
end
class AbstractMysqlAdapter
module CharsetSupport
def prepare_column_options(column, types)
spec = super
conn = ActiveRecord::Base.connection
spec[:charset] = column.charset.inspect if column.charset && column.charset != conn.charset
spec[:collation] = column.collation.inspect if column.collation && column.collation != conn.collation
spec
end
def migration_keys
super + [:charset, :collation]
end
end
prepend CharsetSupport
class SchemaCreation
module CharsetSupport
def column_options(o)
column_options = super
column_options[:charset] = o.charset unless o.charset.nil?
column_options[:collation] = o.collation unless o.collation.nil?
column_options
end
def add_column_options!(sql, options)
if options[:charset]
sql << " CHARACTER SET #{options[:charset]}"
end
if options[:collation]
sql << " COLLATE #{options[:collation]}"
end
super
end
end
prepend CharsetSupport
end
class Column
module CharsetSupport
attr_reader :charset
def initialize(*args)
super
@charset = @collation[/\A[^_]+/] unless @collation.nil?
end
end
prepend CharsetSupport
end
end
end if Module.method_defined?(:prepend) # ruby >=2.0