132 lines
3.7 KiB
Ruby
132 lines
3.7 KiB
Ruby
# frozen_string_literal: true
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class ApplicationRecord < ActiveRecord::Base
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include DatabaseReflection
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include Transactions
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include LegacyBulkInsert
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include CrossDatabaseModification
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include SensitiveSerializableHash
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self.abstract_class = true
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# We should avoid using pluck https://docs.gitlab.com/ee/development/sql.html#plucking-ids
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# but, if we are going to use it, let's try and limit the number of records
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MAX_PLUCK = 1_000
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alias_method :reset, :reload
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def self.without_order
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reorder(nil)
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end
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def self.id_in(ids)
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where(id: ids)
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end
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def self.primary_key_in(values)
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where(primary_key => values)
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end
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def self.iid_in(iids)
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where(iid: iids)
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end
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def self.id_not_in(ids)
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where.not(id: ids)
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end
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def self.pluck_primary_key
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where(nil).pluck(primary_key)
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end
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def self.safe_ensure_unique(retries: 0)
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transaction(requires_new: true) do # rubocop:disable Performance/ActiveRecordSubtransactions
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yield
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end
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rescue ActiveRecord::RecordNotUnique
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if retries > 0
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retries -= 1
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retry
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end
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false
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end
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def self.safe_find_or_create_by!(*args, &block)
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safe_find_or_create_by(*args, &block).tap do |record|
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raise ActiveRecord::RecordNotFound unless record.present?
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record.validate! unless record.persisted?
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end
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end
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# Start a new transaction with a shorter-than-usual statement timeout. This is
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# currently one third of the default 15-second timeout with a 500ms buffer
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# to allow callers gracefully handling the errors to still complete within
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# the 5s target duration of a low urgency request.
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def self.with_fast_read_statement_timeout(timeout_ms = 4500)
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::Gitlab::Database::LoadBalancing::Session.current.fallback_to_replicas_for_ambiguous_queries do
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transaction(requires_new: true) do # rubocop:disable Performance/ActiveRecordSubtransactions
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connection.exec_query("SET LOCAL statement_timeout = #{timeout_ms}")
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yield
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end
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end
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end
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def self.safe_find_or_create_by(*args, &block)
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record = find_by(*args)
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return record if record.present?
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# We need to use `all.create` to make this implementation follow `find_or_create_by` which delegates this in
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# https://github.com/rails/rails/blob/v6.1.3.2/activerecord/lib/active_record/querying.rb#L22
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#
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# When calling this method on an association, just calling `self.create` would call `ActiveRecord::Persistence.create`
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# and that skips some code that adds the newly created record to the association.
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transaction(requires_new: true) { all.create(*args, &block) } # rubocop:disable Performance/ActiveRecordSubtransactions
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rescue ActiveRecord::RecordNotUnique
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find_by(*args)
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end
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def create_or_load_association(association_name)
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association(association_name).create unless association(association_name).loaded?
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rescue ActiveRecord::RecordNotUnique, PG::UniqueViolation
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association(association_name).reader
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end
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def self.underscore
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Gitlab::SafeRequestStore.fetch("model:#{self}:underscore") { to_s.underscore }
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end
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def self.where_exists(query)
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where('EXISTS (?)', query.select(1))
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end
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def self.where_not_exists(query)
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where('NOT EXISTS (?)', query.select(1))
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end
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def self.declarative_enum(enum_mod)
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enum(enum_mod.key => enum_mod.values)
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end
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def self.cached_column_list
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column_names.map { |column_name| arel_table[column_name] }
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end
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def self.default_select_columns
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if ignored_columns.any?
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cached_column_list
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else
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arel_table[Arel.star]
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end
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end
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def readable_by?(user)
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Ability.allowed?(user, "read_#{to_ability_name}".to_sym, self)
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end
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def to_ability_name
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model_name.element
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end
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end
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