Module: ActiveRecord::Tasks::DatabaseTasks
- Extended by:
- DatabaseTasks
- Included in:
- DatabaseTasks
- Defined in:
- lib/active_record/tasks/database_tasks.rb
Overview
Active Record DatabaseTasks
ActiveRecord::Tasks::DatabaseTasks is a utility class, which encapsulates logic behind common tasks used to manage database and migrations.
The tasks defined here are used with Rails commands provided by Active Record.
In order to use DatabaseTasks, a few config values need to be set. All the needed config values are set by Rails already, so it’s necessary to do it only if you want to change the defaults or when you want to use Active Record outside of Rails (in such case after configuring the database tasks, you can also use the rake tasks defined in Active Record).
The possible config values are:
-
env
: current environment (like Rails.env). -
database_configuration
: configuration of your databases (as inconfig/database.yml
). -
db_dir
: yourdb
directory. -
fixtures_path
: a path to fixtures directory. -
migrations_paths
: a list of paths to directories with migrations. -
seed_loader
: an object which will load seeds, it needs to respond to theload_seed
method. -
root
: a path to the root of the application.
Example usage of DatabaseTasks outside Rails could look as such:
include ActiveRecord::Tasks
DatabaseTasks.database_configuration = YAML.load_file('my_database_config.yml')
DatabaseTasks.db_dir = 'db'
# other settings...
DatabaseTasks.create_current('production')
Constant Summary collapse
- LOCAL_HOSTS =
["127.0.0.1", "localhost"]
Instance Attribute Summary collapse
-
#database_configuration ⇒ Object
Returns the value of attribute database_configuration.
- #db_dir ⇒ Object
- #env ⇒ Object
- #fixtures_path ⇒ Object
- #migrations_paths ⇒ Object
- #root ⇒ Object
- #seed_loader ⇒ Object
Instance Method Summary collapse
- #cache_dump_filename(db_config_name, schema_cache_path: nil) ⇒ Object
- #charset(configuration, *arguments) ⇒ Object
- #charset_current(env_name = env, db_name = name) ⇒ Object
- #check_protected_environments!(environment = env) ⇒ Object
- #check_schema_file(filename) ⇒ Object
- #check_target_version ⇒ Object
- #clear_schema_cache(filename) ⇒ Object
- #collation(configuration, *arguments) ⇒ Object
- #collation_current(env_name = env, db_name = name) ⇒ Object
- #create(configuration, *arguments) ⇒ Object
- #create_all ⇒ Object
- #create_current(environment = env, name = nil) ⇒ Object
-
#db_configs_with_versions(db_configs) ⇒ Object
:nodoc:.
- #drop(configuration, *arguments) ⇒ Object
- #drop_all ⇒ Object
- #drop_current(environment = env) ⇒ Object
-
#dump_schema(db_config, format = ActiveRecord.schema_format) ⇒ Object
:nodoc:.
-
#dump_schema_cache(conn, filename) ⇒ Object
Dumps the schema cache in YAML format for the connection into the file.
-
#for_each(databases) ⇒ Object
:nodoc:.
-
#load_schema(db_config, format = ActiveRecord.schema_format, file = nil) ⇒ Object
:nodoc:.
- #load_schema_current(format = ActiveRecord.schema_format, file = nil, environment = env) ⇒ Object
- #load_seed ⇒ Object
- #migrate(version = nil) ⇒ Object
- #migrate_status ⇒ Object
-
#migration_class ⇒ Object
:nodoc:.
-
#migration_connection ⇒ Object
:nodoc:.
- #name ⇒ Object
- #prepare_all ⇒ Object
- #purge(configuration) ⇒ Object
- #purge_all ⇒ Object
- #purge_current(environment = env) ⇒ Object
-
#raise_for_multi_db(environment = env, command:) ⇒ Object
:nodoc:.
-
#reconstruct_from_schema(db_config, format = ActiveRecord.schema_format, file = nil) ⇒ Object
:nodoc:.
- #register_task(pattern, task) ⇒ Object
- #schema_dump_path(db_config, format = ActiveRecord.schema_format) ⇒ Object
- #schema_up_to_date?(configuration, format = ActiveRecord.schema_format, file = nil) ⇒ Boolean
-
#setup_initial_database_yaml ⇒ Object
:nodoc:.
- #structure_dump(configuration, *arguments) ⇒ Object
-
#structure_dump_flags ⇒ Object
:singleton-method: Extra flags passed to database CLI tool (mysqldump/pg_dump) when calling db:schema:dump It can be used as a string/array (the typical case) or a hash (when you use multiple adapters) Example: ActiveRecord::Tasks::DatabaseTasks.structure_dump_flags = { mysql2: [‘–no-defaults’, ‘–skip-add-drop-table’], postgres: ‘–no-tablespaces’ }.
- #structure_load(configuration, *arguments) ⇒ Object
-
#structure_load_flags ⇒ Object
:singleton-method: Extra flags passed to database CLI tool when calling db:schema:load It can be used as a string/array (the typical case) or a hash (when you use multiple adapters).
- #target_version ⇒ Object
- #truncate_all(environment = env) ⇒ Object
-
#with_temporary_connection(db_config, clobber: false) ⇒ Object
:nodoc:.
-
#with_temporary_connection_for_each(env: ActiveRecord::Tasks::DatabaseTasks.env, name: nil, clobber: false, &block) ⇒ Object
:nodoc:.
Instance Attribute Details
#database_configuration ⇒ Object
Returns the value of attribute database_configuration.
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# File 'lib/active_record/tasks/database_tasks.rb', line 61 def database_configuration @database_configuration end |
#db_dir ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 83 def db_dir @db_dir ||= Rails.application.config.paths["db"].first end |
#env ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 103 def env @env ||= Rails.env end |
#fixtures_path ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 91 def fixtures_path @fixtures_path ||= if ENV["FIXTURES_PATH"] File.join(root, ENV["FIXTURES_PATH"]) else File.join(root, "test", "fixtures") end end |
#migrations_paths ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 87 def migrations_paths @migrations_paths ||= Rails.application.paths["db/migrate"].to_a end |
#root ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 99 def root @root ||= Rails.root end |
#seed_loader ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 111 def seed_loader @seed_loader ||= Rails.application end |
Instance Method Details
#cache_dump_filename(db_config_name, schema_cache_path: nil) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 440 def cache_dump_filename(db_config_name, schema_cache_path: nil) filename = if ActiveRecord::Base.configurations.primary?(db_config_name) "schema_cache.yml" else "#{db_config_name}_schema_cache.yml" end schema_cache_path || ENV["SCHEMA_CACHE"] || File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, filename) end |
#charset(configuration, *arguments) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 305 def charset(configuration, *arguments) db_config = resolve_configuration(configuration) database_adapter_for(db_config, *arguments).charset end |
#charset_current(env_name = env, db_name = name) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 300 def charset_current(env_name = env, db_name = name) db_config = configs_for(env_name: env_name, name: db_name) charset(db_config) end |
#check_protected_environments!(environment = env) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 65 def check_protected_environments!(environment = env) return if ENV["DISABLE_DATABASE_ENVIRONMENT_CHECK"] configs_for(env_name: environment).each do |db_config| check_current_protected_environment!(db_config) end end |
#check_schema_file(filename) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 458 def check_schema_file(filename) unless File.exist?(filename) = +%{#{filename} doesn't exist yet. Run `bin/rails db:migrate` to create it, then try again.} << %{ If you do not intend to use a database, you should instead alter #{Rails.root}/config/application.rb to limit the frameworks that will be loaded.} if defined?(::Rails.root) Kernel.abort end end |
#check_target_version ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 290 def check_target_version if target_version && !Migration.valid_version_format?(ENV["VERSION"]) raise "Invalid format of target version: `VERSION=#{ENV['VERSION']}`" end end |
#clear_schema_cache(filename) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 484 def clear_schema_cache(filename) FileUtils.rm_f filename, verbose: false end |
#collation(configuration, *arguments) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 315 def collation(configuration, *arguments) db_config = resolve_configuration(configuration) database_adapter_for(db_config, *arguments).collation end |
#collation_current(env_name = env, db_name = name) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 310 def collation_current(env_name = env, db_name = name) db_config = configs_for(env_name: env_name, name: db_name) collation(db_config) end |
#create(configuration, *arguments) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 115 def create(configuration, *arguments) db_config = resolve_configuration(configuration) database_adapter_for(db_config, *arguments).create $stdout.puts "Created database '#{db_config.database}'" if verbose? rescue DatabaseAlreadyExists $stderr.puts "Database '#{db_config.database}' already exists" if verbose? rescue Exception => error $stderr.puts error $stderr.puts "Couldn't create '#{db_config.database}' database. Please check your configuration." raise end |
#create_all ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 127 def create_all each_local_configuration do |db_config| with_temporary_connection(db_config) do create(db_config) end end end |
#create_current(environment = env, name = nil) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 170 def create_current(environment = env, name = nil) each_current_configuration(environment, name) { |db_config| create(db_config) } migration_class.establish_connection(environment.to_sym) end |
#db_configs_with_versions(db_configs) ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 258 def db_configs_with_versions(db_configs) # :nodoc: db_configs_with_versions = Hash.new { |h, k| h[k] = [] } with_temporary_connection_for_each do |conn| db_config = conn.pool.db_config versions_to_run = conn.migration_context.pending_migration_versions target_version = ActiveRecord::Tasks::DatabaseTasks.target_version versions_to_run.each do |version| next if target_version && target_version != version db_configs_with_versions[version] << db_config end end db_configs_with_versions end |
#drop(configuration, *arguments) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 204 def drop(configuration, *arguments) db_config = resolve_configuration(configuration) database_adapter_for(db_config, *arguments).drop $stdout.puts "Dropped database '#{db_config.database}'" if verbose? rescue ActiveRecord::NoDatabaseError $stderr.puts "Database '#{db_config.database}' does not exist" rescue Exception => error $stderr.puts error $stderr.puts "Couldn't drop database '#{db_config.database}'" raise end |
#drop_all ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 216 def drop_all each_local_configuration { |db_config| drop(db_config) } end |
#drop_current(environment = env) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 220 def drop_current(environment = env) each_current_configuration(environment) { |db_config| drop(db_config) } end |
#dump_schema(db_config, format = ActiveRecord.schema_format) ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 403 def dump_schema(db_config, format = ActiveRecord.schema_format) # :nodoc: return unless db_config.schema_dump require "active_record/schema_dumper" filename = schema_dump_path(db_config, format) return unless filename FileUtils.mkdir_p(db_dir) case format when :ruby File.open(filename, "w:utf-8") do |file| ActiveRecord::SchemaDumper.dump(migration_connection, file) end when :sql structure_dump(db_config, filename) if migration_connection.schema_migration.table_exists? File.open(filename, "a") do |f| f.puts migration_connection.dump_schema_information f.print "\n" end end end end |
#dump_schema_cache(conn, filename) ⇒ Object
Dumps the schema cache in YAML format for the connection into the file
Examples
ActiveRecord::Tasks::DatabaseTasks.dump_schema_cache(ActiveRecord::Base.connection, "tmp/schema_dump.yaml")
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# File 'lib/active_record/tasks/database_tasks.rb', line 480 def dump_schema_cache(conn, filename) conn.schema_cache.dump_to(filename) end |
#for_each(databases) ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 141 def for_each(databases) # :nodoc: return {} unless defined?(Rails) database_configs = ActiveRecord::DatabaseConfigurations.new(databases).configs_for(env_name: Rails.env) # if this is a single database application we don't want tasks for each primary database return if database_configs.count == 1 database_configs.each do |db_config| next unless db_config.database_tasks? yield db_config.name end end |
#load_schema(db_config, format = ActiveRecord.schema_format, file = nil) ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 349 def load_schema(db_config, format = ActiveRecord.schema_format, file = nil) # :nodoc: file ||= schema_dump_path(db_config, format) return unless file verbose_was, Migration.verbose = Migration.verbose, verbose? && ENV["VERBOSE"] check_schema_file(file) case format when :ruby load(file) when :sql structure_load(db_config, file) else raise ArgumentError, "unknown format #{format.inspect}" end migration_connection..create_table_and_set_flags(db_config.env_name, schema_sha1(file)) ensure Migration.verbose = verbose_was end |
#load_schema_current(format = ActiveRecord.schema_format, file = nil, environment = env) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 450 def load_schema_current(format = ActiveRecord.schema_format, file = nil, environment = env) each_current_configuration(environment) do |db_config| with_temporary_connection(db_config) do load_schema(db_config, format, file) end end end |
#load_seed ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 466 def load_seed if seed_loader seed_loader.load_seed else raise "You tried to load seed data, but no seed loader is specified. Please specify seed " \ "loader with ActiveRecord::Tasks::DatabaseTasks.seed_loader = your_seed_loader\n" \ "Seed loader should respond to load_seed method" end end |
#migrate(version = nil) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 237 def migrate(version = nil) scope = ENV["SCOPE"] verbose_was, Migration.verbose = Migration.verbose, verbose? check_target_version migration_connection.migration_context.migrate(target_version) do |migration| if version.blank? scope.blank? || scope == migration.scope else migration.version == version end end.tap do |migrations_ran| Migration.write("No migrations ran. (using #{scope} scope)") if scope.present? && migrations_ran.empty? end migration_connection.schema_cache.clear! ensure Migration.verbose = verbose_was end |
#migrate_status ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 275 def migrate_status unless migration_connection.schema_migration.table_exists? Kernel.abort "Schema migrations table does not exist yet." end # output puts "\ndatabase: #{migration_connection.pool.db_config.database}\n\n" puts "#{'Status'.center(8)} #{'Migration ID'.ljust(14)} Migration Name" puts "-" * 50 migration_connection.migration_context.migrations_status.each do |status, version, name| puts "#{status.center(8)} #{version.ljust(14)} #{name}" end puts end |
#migration_class ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 505 def migration_class # :nodoc: ActiveRecord::Base end |
#migration_connection ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 509 def migration_connection # :nodoc: migration_class.connection end |
#name ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 107 def name @name ||= "primary" end |
#prepare_all ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 176 def prepare_all seed = false each_current_configuration(env) do |db_config| with_temporary_pool(db_config) do begin database_initialized = migration_connection.schema_migration.table_exists? rescue ActiveRecord::NoDatabaseError create(db_config) retry end unless database_initialized if File.exist?(schema_dump_path(db_config)) load_schema(db_config, ActiveRecord.schema_format, nil) end seed = true end migrate dump_schema(db_config) if ActiveRecord.dump_schema_after_migration end end load_seed if seed end |
#purge(configuration) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 320 def purge(configuration) db_config = resolve_configuration(configuration) database_adapter_for(db_config).purge end |
#purge_all ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 325 def purge_all each_local_configuration { |db_config| purge(db_config) } end |
#purge_current(environment = env) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 329 def purge_current(environment = env) each_current_configuration(environment) { |db_config| purge(db_config) } migration_class.establish_connection(environment.to_sym) end |
#raise_for_multi_db(environment = env, command:) ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 156 def raise_for_multi_db(environment = env, command:) # :nodoc: db_configs = configs_for(env_name: environment) if db_configs.count > 1 dbs_list = [] db_configs.each do |db| dbs_list << "#{command}:#{db.name}" end raise "You're using a multiple database application. To use `#{command}` you must run the namespaced task with a VERSION. Available tasks are #{dbs_list.to_sentence}." end end |
#reconstruct_from_schema(db_config, format = ActiveRecord.schema_format, file = nil) ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 385 def reconstruct_from_schema(db_config, format = ActiveRecord.schema_format, file = nil) # :nodoc: file ||= schema_dump_path(db_config, format) check_schema_file(file) if file with_temporary_pool(db_config, clobber: true) do if schema_up_to_date?(db_config, format, file) truncate_tables(db_config) else purge(db_config) load_schema(db_config, format, file) end rescue ActiveRecord::NoDatabaseError create(db_config) load_schema(db_config, format, file) end end |
#register_task(pattern, task) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 73 def register_task(pattern, task) @tasks ||= {} @tasks[pattern] = task end |
#schema_dump_path(db_config, format = ActiveRecord.schema_format) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 427 def schema_dump_path(db_config, format = ActiveRecord.schema_format) return ENV["SCHEMA"] if ENV["SCHEMA"] filename = db_config.schema_dump(format) return unless filename if File.dirname(filename) == ActiveRecord::Tasks::DatabaseTasks.db_dir filename else File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, filename) end end |
#schema_up_to_date?(configuration, format = ActiveRecord.schema_format, file = nil) ⇒ Boolean
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# File 'lib/active_record/tasks/database_tasks.rb', line 370 def schema_up_to_date?(configuration, format = ActiveRecord.schema_format, file = nil) db_config = resolve_configuration(configuration) file ||= schema_dump_path(db_config) return true unless file && File.exist?(file) with_temporary_connection(db_config) do |connection| return false unless connection..enabled? return false unless connection..table_exists? connection.[:schema_sha1] == schema_sha1(file) end end |
#setup_initial_database_yaml ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 135 def setup_initial_database_yaml # :nodoc: return {} unless defined?(Rails) Rails.application.config.load_database_yaml end |
#structure_dump(configuration, *arguments) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 335 def structure_dump(configuration, *arguments) db_config = resolve_configuration(configuration) filename = arguments.delete_at(0) flags = structure_dump_flags_for(db_config.adapter) database_adapter_for(db_config, *arguments).structure_dump(filename, flags) end |
#structure_dump_flags ⇒ Object
:singleton-method: Extra flags passed to database CLI tool (mysqldump/pg_dump) when calling db:schema:dump It can be used as a string/array (the typical case) or a hash (when you use multiple adapters) Example:
ActiveRecord::Tasks::DatabaseTasks.structure_dump_flags = {
mysql2: ['--no-defaults', '--skip-add-drop-table'],
postgres: '--no-tablespaces'
}
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# File 'lib/active_record/tasks/database_tasks.rb', line 50 mattr_accessor :structure_dump_flags, instance_accessor: false |
#structure_load(configuration, *arguments) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 342 def structure_load(configuration, *arguments) db_config = resolve_configuration(configuration) filename = arguments.delete_at(0) flags = structure_load_flags_for(db_config.adapter) database_adapter_for(db_config, *arguments).structure_load(filename, flags) end |
#structure_load_flags ⇒ Object
:singleton-method: Extra flags passed to database CLI tool when calling db:schema:load It can be used as a string/array (the typical case) or a hash (when you use multiple adapters)
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# File 'lib/active_record/tasks/database_tasks.rb', line 56 mattr_accessor :structure_load_flags, instance_accessor: false |
#target_version ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 296 def target_version ENV["VERSION"].to_i if ENV["VERSION"] && !ENV["VERSION"].empty? end |
#truncate_all(environment = env) ⇒ Object
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# File 'lib/active_record/tasks/database_tasks.rb', line 231 def truncate_all(environment = env) configs_for(env_name: environment).each do |db_config| truncate_tables(db_config) end end |
#with_temporary_connection(db_config, clobber: false) ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 499 def with_temporary_connection(db_config, clobber: false) # :nodoc: with_temporary_pool(db_config, clobber: clobber) do |pool| yield pool.connection end end |
#with_temporary_connection_for_each(env: ActiveRecord::Tasks::DatabaseTasks.env, name: nil, clobber: false, &block) ⇒ Object
:nodoc:
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# File 'lib/active_record/tasks/database_tasks.rb', line 488 def with_temporary_connection_for_each(env: ActiveRecord::Tasks::DatabaseTasks.env, name: nil, clobber: false, &block) # :nodoc: if name db_config = ActiveRecord::Base.configurations.configs_for(env_name: env, name: name) with_temporary_connection(db_config, clobber: clobber, &block) else ActiveRecord::Base.configurations.configs_for(env_name: env, name: name).each do |db_config| with_temporary_connection(db_config, clobber: clobber, &block) end end end |