diff options
Diffstat (limited to 'activerecord/lib')
15 files changed, 124 insertions, 124 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb index adb5ae82a0..9b3f5260f7 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb @@ -999,15 +999,30 @@ module ActiveRecord end end + attr_reader :prevent_writes + def initialize # These caches are keyed by spec.name (ConnectionSpecification#name). @owner_to_pool = ConnectionHandler.create_owner_to_pool + @prevent_writes = false # Backup finalizer: if the forked child never needed a pool, the above # early discard has not occurred ObjectSpace.define_finalizer self, ConnectionHandler.unowned_pool_finalizer(@owner_to_pool) end + # Prevent writing to the database regardless of role. + # + # In some cases you may want to prevent writes to the database + # even if you are on a database that can write. `while_preventing_writes` + # will prevent writes to the database for the duration of the block. + def while_preventing_writes + original, @prevent_writes = @prevent_writes, true + yield + ensure + @prevent_writes = original + end + def connection_pool_list owner_to_pool.values.compact end diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb index c85ea8e1da..79dc98607a 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb @@ -1064,8 +1064,8 @@ module ActiveRecord options end - def dump_schema_information #:nodoc: - versions = ActiveRecord::SchemaMigration.all_versions + def dump_schema_information # :nodoc: + versions = schema_migration.all_versions insert_versions_sql(versions) if versions.any? end @@ -1081,7 +1081,7 @@ module ActiveRecord end version = version.to_i - sm_table = quote_table_name(ActiveRecord::SchemaMigration.table_name) + sm_table = quote_table_name(schema_migration.table_name) migrated = migration_context.get_all_versions versions = migration_context.migrations.map(&:version) @@ -1454,7 +1454,7 @@ module ActiveRecord end def insert_versions_sql(versions) - sm_table = quote_table_name(ActiveRecord::SchemaMigration.table_name) + sm_table = quote_table_name(schema_migration.table_name) if versions.is_a?(Array) sql = +"INSERT INTO #{sm_table} (version) VALUES\n" diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb index cfd986ebf9..c0ead17b3b 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb @@ -78,7 +78,7 @@ module ActiveRecord SIMPLE_INT = /\A\d+\z/ attr_accessor :pool - attr_reader :visitor, :owner, :logger, :lock, :prepared_statements, :prevent_writes + attr_reader :visitor, :owner, :logger, :lock, :prepared_statements alias :in_use? :owner set_callback :checkin, :after, :enable_lazy_transactions! @@ -117,7 +117,6 @@ module ActiveRecord @pool = ActiveRecord::ConnectionAdapters::NullPool.new @idle_since = Concurrent.monotonic_time @quoted_column_names, @quoted_table_names = {}, {} - @prevent_writes = false @visitor = arel_visitor @statements = build_statement_pool @lock = ActiveSupport::Concurrency::LoadInterlockAwareMonitor.new @@ -143,19 +142,7 @@ module ActiveRecord # Returns true if the connection is a replica, or if +prevent_writes+ # is set to true. def preventing_writes? - replica? || prevent_writes - end - - # Prevent writing to the database regardless of role. - # - # In some cases you may want to prevent writes to the database - # even if you are on a database that can write. `while_preventing_writes` - # will prevent writes to the database for the duration of the block. - def while_preventing_writes - original, @prevent_writes = @prevent_writes, true - yield - ensure - @prevent_writes = original + replica? || ActiveRecord::Base.connection_handler.prevent_writes end def migrations_paths # :nodoc: @@ -163,7 +150,22 @@ module ActiveRecord end def migration_context # :nodoc: - MigrationContext.new(migrations_paths) + MigrationContext.new(migrations_paths, schema_migration) + end + + def schema_migration # :nodoc: + @schema_migration ||= begin + conn = self + spec_name = conn.pool.spec.name + name = "#{spec_name}::SchemaMigration" + + Class.new(ActiveRecord::SchemaMigration) do + define_singleton_method(:name) { name } + define_singleton_method(:to_s) { name } + + self.connection_specification_name = spec_name + end + end end class Version diff --git a/activerecord/lib/active_record/connection_adapters/determine_if_preparable_visitor.rb b/activerecord/lib/active_record/connection_adapters/determine_if_preparable_visitor.rb index 1df4dea2d8..97d74df529 100644 --- a/activerecord/lib/active_record/connection_adapters/determine_if_preparable_visitor.rb +++ b/activerecord/lib/active_record/connection_adapters/determine_if_preparable_visitor.rb @@ -5,7 +5,7 @@ module ActiveRecord module DetermineIfPreparableVisitor attr_accessor :preparable - def accept(*) + def accept(object, collector) @preparable = true super end @@ -20,7 +20,7 @@ module ActiveRecord super end - def visit_Arel_Nodes_SqlLiteral(*) + def visit_Arel_Nodes_SqlLiteral(o, collector) @preparable = false super end diff --git a/activerecord/lib/active_record/middleware/database_selector/resolver.rb b/activerecord/lib/active_record/middleware/database_selector/resolver.rb index 5b89c8f668..3eb1039c50 100644 --- a/activerecord/lib/active_record/middleware/database_selector/resolver.rb +++ b/activerecord/lib/active_record/middleware/database_selector/resolver.rb @@ -45,8 +45,8 @@ module ActiveRecord private def read_from_primary(&blk) - ActiveRecord::Base.connection.while_preventing_writes do - ActiveRecord::Base.connected_to(role: ActiveRecord::Base.writing_role) do + ActiveRecord::Base.connected_to(role: ActiveRecord::Base.writing_role) do + ActiveRecord::Base.connection_handler.while_preventing_writes do instrumenter.instrument("database_selector.active_record.read_from_primary") do yield end diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb index fa9b650416..9db017cded 100644 --- a/activerecord/lib/active_record/migration.rb +++ b/activerecord/lib/active_record/migration.rb @@ -494,9 +494,9 @@ module ActiveRecord # This migration will create the horses table for you on the way up, and # automatically figure out how to drop the table on the way down. # - # Some commands like +remove_column+ cannot be reversed. If you care to - # define how to move up and down in these cases, you should define the +up+ - # and +down+ methods as before. + # Some commands cannot be reversed. If you care to define how to move up + # and down in these cases, you should define the +up+ and +down+ methods + # as before. # # If a command cannot be reversed, an # <tt>ActiveRecord::IrreversibleMigration</tt> exception will be raised when @@ -884,13 +884,14 @@ module ActiveRecord def copy(destination, sources, options = {}) copied = [] + schema_migration = options[:schema_migration] || ActiveRecord::SchemaMigration FileUtils.mkdir_p(destination) unless File.exist?(destination) - destination_migrations = ActiveRecord::MigrationContext.new(destination).migrations + destination_migrations = ActiveRecord::MigrationContext.new(destination, schema_migration).migrations last = destination_migrations.last sources.each do |scope, path| - source_migrations = ActiveRecord::MigrationContext.new(path).migrations + source_migrations = ActiveRecord::MigrationContext.new(path, schema_migration).migrations source_migrations.each do |migration| source = File.binread(migration.filename) @@ -1012,10 +1013,11 @@ module ActiveRecord end class MigrationContext #:nodoc: - attr_reader :migrations_paths + attr_reader :migrations_paths, :schema_migration - def initialize(migrations_paths) + def initialize(migrations_paths, schema_migration) @migrations_paths = migrations_paths + @schema_migration = schema_migration end def migrate(target_version = nil, &block) @@ -1046,7 +1048,7 @@ module ActiveRecord migrations end - Migrator.new(:up, selected_migrations, target_version).migrate + Migrator.new(:up, selected_migrations, schema_migration, target_version).migrate end def down(target_version = nil) @@ -1056,20 +1058,20 @@ module ActiveRecord migrations end - Migrator.new(:down, selected_migrations, target_version).migrate + Migrator.new(:down, selected_migrations, schema_migration, target_version).migrate end def run(direction, target_version) - Migrator.new(direction, migrations, target_version).run + Migrator.new(direction, migrations, schema_migration, target_version).run end def open - Migrator.new(:up, migrations, nil) + Migrator.new(:up, migrations, schema_migration) end def get_all_versions - if SchemaMigration.table_exists? - SchemaMigration.all_versions.map(&:to_i) + if schema_migration.table_exists? + schema_migration.all_versions else [] end @@ -1106,12 +1108,12 @@ module ActiveRecord end def migrations_status - db_list = ActiveRecord::SchemaMigration.normalized_versions + db_list = schema_migration.normalized_versions file_list = migration_files.map do |file| version, name, scope = parse_migration_filename(file) raise IllegalMigrationNameError.new(file) unless version - version = ActiveRecord::SchemaMigration.normalize_migration_number(version) + version = schema_migration.normalize_migration_number(version) status = db_list.delete(version) ? "up" : "down" [status, version, (name + scope).humanize] end.compact @@ -1151,7 +1153,7 @@ module ActiveRecord end def move(direction, steps) - migrator = Migrator.new(direction, migrations) + migrator = Migrator.new(direction, migrations, schema_migration) if current_version != 0 && !migrator.current_migration raise UnknownMigrationVersionError.new(current_version) @@ -1170,27 +1172,28 @@ module ActiveRecord end end - class Migrator #:nodoc: + class Migrator # :nodoc: class << self attr_accessor :migrations_paths # For cases where a table doesn't exist like loading from schema cache def current_version - MigrationContext.new(migrations_paths).current_version + MigrationContext.new(migrations_paths, SchemaMigration).current_version end end self.migrations_paths = ["db/migrate"] - def initialize(direction, migrations, target_version = nil) + def initialize(direction, migrations, schema_migration, target_version = nil) @direction = direction @target_version = target_version @migrated_versions = nil @migrations = migrations + @schema_migration = schema_migration validate(@migrations) - ActiveRecord::SchemaMigration.create_table + @schema_migration.create_table ActiveRecord::InternalMetadata.create_table end @@ -1244,7 +1247,7 @@ module ActiveRecord end def load_migrated - @migrated_versions = Set.new(Base.connection.migration_context.get_all_versions) + @migrated_versions = Set.new(@schema_migration.all_versions) end private @@ -1327,10 +1330,10 @@ module ActiveRecord def record_version_state_after_migrating(version) if down? migrated.delete(version) - ActiveRecord::SchemaMigration.delete_by(version: version.to_s) + @schema_migration.delete_by(version: version.to_s) else migrated << version - ActiveRecord::SchemaMigration.create!(version: version.to_s) + @schema_migration.create!(version: version.to_s) end end diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index d1bcec9704..87a53966e4 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -1159,8 +1159,9 @@ module ActiveRecord columns.flat_map do |field| case field when Symbol - field = field.to_s - arel_column(field, &connection.method(:quote_table_name)) + arel_column(field.to_s) do |attr_name| + connection.quote_table_name(attr_name) + end when String arel_column(field, &:itself) when Proc @@ -1268,20 +1269,14 @@ module ActiveRecord order_args.map! do |arg| case arg when Symbol - arg = arg.to_s - arel_column(arg) { - Arel.sql(connection.quote_table_name(arg)) - }.asc + order_column(arg.to_s).asc when Hash arg.map { |field, dir| case field when Arel::Nodes::SqlLiteral field.send(dir.downcase) else - field = field.to_s - arel_column(field) { - Arel.sql(connection.quote_table_name(field)) - }.send(dir.downcase) + order_column(field.to_s).send(dir.downcase) end } else @@ -1290,6 +1285,16 @@ module ActiveRecord end.flatten! end + def order_column(field) + arel_column(field) do |attr_name| + if attr_name == "count" && !group_values.empty? + arel_attribute(attr_name) + else + Arel.sql(connection.quote_table_name(attr_name)) + end + end + end + # Checks to make sure that the arguments are not blank. Note that if some # blank-like object were initially passed into the query method, then this # method will not raise an error. diff --git a/activerecord/lib/active_record/schema.rb b/activerecord/lib/active_record/schema.rb index 76bf53387d..aba25fb375 100644 --- a/activerecord/lib/active_record/schema.rb +++ b/activerecord/lib/active_record/schema.rb @@ -50,7 +50,7 @@ module ActiveRecord instance_eval(&block) if info[:version].present? - ActiveRecord::SchemaMigration.create_table + connection.schema_migration.create_table connection.assume_migrated_upto_version(info[:version]) end diff --git a/activerecord/lib/active_record/schema_migration.rb b/activerecord/lib/active_record/schema_migration.rb index dec7fee986..58b21d2cc8 100644 --- a/activerecord/lib/active_record/schema_migration.rb +++ b/activerecord/lib/active_record/schema_migration.rb @@ -45,7 +45,7 @@ module ActiveRecord end def all_versions - order(:version).pluck(:version) + order(:version).pluck(:version).map(&:to_i) end end diff --git a/activerecord/lib/active_record/tasks/database_tasks.rb b/activerecord/lib/active_record/tasks/database_tasks.rb index cf98a203bd..aecc9350e8 100644 --- a/activerecord/lib/active_record/tasks/database_tasks.rb +++ b/activerecord/lib/active_record/tasks/database_tasks.rb @@ -200,9 +200,10 @@ module ActiveRecord def truncate_tables(configuration) ActiveRecord::Base.connected_to(database: { truncation: configuration }) do - table_names = ActiveRecord::Base.connection.tables + conn = ActiveRecord::Base.connection + table_names = conn.tables table_names -= [ - SchemaMigration.table_name, + conn.schema_migration.table_name, InternalMetadata.table_name ] @@ -233,7 +234,7 @@ module ActiveRecord end def migrate_status - unless ActiveRecord::SchemaMigration.table_exists? + unless ActiveRecord::Base.connection.schema_migration.table_exists? Kernel.abort "Schema migrations table does not exist yet." end @@ -328,6 +329,7 @@ module ActiveRecord def dump_schema(configuration, format = ActiveRecord::Base.schema_format, spec_name = "primary") # :nodoc: require "active_record/schema_dumper" filename = dump_filename(spec_name, format) + connection = ActiveRecord::Base.connection case format when :ruby @@ -336,9 +338,9 @@ module ActiveRecord end when :sql structure_dump(configuration, filename) - if ActiveRecord::SchemaMigration.table_exists? + if connection.schema_migration.table_exists? File.open(filename, "a") do |f| - f.puts ActiveRecord::Base.connection.dump_schema_information + f.puts connection.dump_schema_information f.print "\n" end end diff --git a/activerecord/lib/arel.rb b/activerecord/lib/arel.rb index 361cd915cc..0fc07e1ede 100644 --- a/activerecord/lib/arel.rb +++ b/activerecord/lib/arel.rb @@ -12,7 +12,7 @@ require "arel/math" require "arel/alias_predication" require "arel/order_predications" require "arel/table" -require "arel/attributes" +require "arel/attributes/attribute" require "arel/visitors" require "arel/collectors/sql_string" diff --git a/activerecord/lib/arel/attributes.rb b/activerecord/lib/arel/attributes.rb deleted file mode 100644 index 35d586c948..0000000000 --- a/activerecord/lib/arel/attributes.rb +++ /dev/null @@ -1,22 +0,0 @@ -# frozen_string_literal: true - -require "arel/attributes/attribute" - -module Arel # :nodoc: all - module Attributes - ### - # Factory method to wrap a raw database +column+ to an Arel Attribute. - def self.for(column) - case column.type - when :string, :text, :binary then String - when :integer then Integer - when :float then Float - when :decimal then Decimal - when :date, :datetime, :timestamp, :time then Time - when :boolean then Boolean - else - Undefined - end - end - end -end diff --git a/activerecord/lib/arel/visitors/depth_first.rb b/activerecord/lib/arel/visitors/depth_first.rb index ca11d9c879..98c3f92cf1 100644 --- a/activerecord/lib/arel/visitors/depth_first.rb +++ b/activerecord/lib/arel/visitors/depth_first.rb @@ -9,7 +9,7 @@ module Arel # :nodoc: all end private - def visit(o) + def visit(o, _ = nil) super @block.call o end diff --git a/activerecord/lib/arel/visitors/to_sql.rb b/activerecord/lib/arel/visitors/to_sql.rb index a67a660fed..eff7a0d036 100644 --- a/activerecord/lib/arel/visitors/to_sql.rb +++ b/activerecord/lib/arel/visitors/to_sql.rb @@ -51,10 +51,14 @@ module Arel # :nodoc: all def visit_Arel_Nodes_InsertStatement(o, collector) collector << "INSERT INTO " collector = visit o.relation, collector - if o.columns.any? - collector << " (#{o.columns.map { |x| - quote_column_name x.name - }.join ', '})" + + unless o.columns.empty? + collector << " (" + o.columns.each_with_index do |x, i| + collector << ", " unless i == 0 + collector << quote_column_name(x.name) + end + collector << ")" end if o.values @@ -96,22 +100,20 @@ module Arel # :nodoc: all def visit_Arel_Nodes_ValuesList(o, collector) collector << "VALUES " - len = o.rows.length - 1 - o.rows.each_with_index { |row, i| + o.rows.each_with_index do |row, i| + collector << ", " unless i == 0 collector << "(" - row_len = row.length - 1 row.each_with_index do |value, k| + collector << ", " unless k == 0 case value when Nodes::SqlLiteral, Nodes::BindParam collector = visit(value, collector) else collector << quote(value).to_s end - collector << ", " unless k == row_len end collector << ")" - collector << ", " unless i == len - } + end collector end @@ -127,11 +129,10 @@ module Arel # :nodoc: all unless o.orders.empty? collector << " ORDER BY " - len = o.orders.length - 1 - o.orders.each_with_index { |x, i| + o.orders.each_with_index do |x, i| + collector << ", " unless i == 0 collector = visit(x, collector) - collector << ", " unless len == i - } + end end visit_Arel_Nodes_SelectOptions(o, collector) @@ -505,7 +506,7 @@ module Arel # :nodoc: all def visit_Arel_Table(o, collector) if o.table_alias - collector << "#{quote_table_name o.name} #{quote_table_name o.table_alias}" + collector << quote_table_name(o.name) << " " << quote_table_name(o.table_alias) else collector << quote_table_name(o.name) end @@ -681,20 +682,13 @@ module Arel # :nodoc: all end def visit_Arel_Nodes_UnqualifiedColumn(o, collector) - collector << "#{quote_column_name o.name}" - collector + collector << quote_column_name(o.name) end def visit_Arel_Attributes_Attribute(o, collector) join_name = o.relation.table_alias || o.relation.name - collector << "#{quote_table_name join_name}.#{quote_column_name o.name}" + collector << quote_table_name(join_name) << "." << quote_column_name(o.name) end - alias :visit_Arel_Attributes_Integer :visit_Arel_Attributes_Attribute - alias :visit_Arel_Attributes_Float :visit_Arel_Attributes_Attribute - alias :visit_Arel_Attributes_Decimal :visit_Arel_Attributes_Attribute - alias :visit_Arel_Attributes_String :visit_Arel_Attributes_Attribute - alias :visit_Arel_Attributes_Time :visit_Arel_Attributes_Attribute - alias :visit_Arel_Attributes_Boolean :visit_Arel_Attributes_Attribute def literal(o, collector); collector << o.to_s; end @@ -784,14 +778,11 @@ module Arel # :nodoc: all end def inject_join(list, collector, join_str) - len = list.length - 1 - list.each_with_index.inject(collector) { |c, (x, i)| - if i == len - visit x, c - else - visit(x, c) << join_str - end - } + list.each_with_index do |x, i| + collector << join_str unless i == 0 + collector = visit(x, collector) + end + collector end def unboundable?(value) diff --git a/activerecord/lib/arel/visitors/visitor.rb b/activerecord/lib/arel/visitors/visitor.rb index 2d5a2b6681..d65ac820bc 100644 --- a/activerecord/lib/arel/visitors/visitor.rb +++ b/activerecord/lib/arel/visitors/visitor.rb @@ -7,8 +7,8 @@ module Arel # :nodoc: all @dispatch = get_dispatch_cache end - def accept(object, *args) - visit object, *args + def accept(object, collector = nil) + visit object, collector end private @@ -24,9 +24,13 @@ module Arel # :nodoc: all self.class.dispatch_cache end - def visit(object, *args) + def visit(object, collector = nil) dispatch_method = dispatch[object.class] - send dispatch_method, object, *args + if collector + send dispatch_method, object, collector + else + send dispatch_method, object + end rescue NoMethodError => e raise e if respond_to?(dispatch_method, true) superklass = object.class.ancestors.find { |klass| |