85 lines
2.3 KiB
Ruby
85 lines
2.3 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Database
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module SchemaHelpers
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def create_trigger_function(name, replace: true)
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replace_clause = optional_clause(replace, "OR REPLACE")
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execute(<<~SQL)
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CREATE #{replace_clause} FUNCTION #{name}()
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RETURNS TRIGGER AS
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$$
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BEGIN
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#{yield}
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END
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$$ LANGUAGE PLPGSQL
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SQL
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end
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def create_trigger(name, function_name, fires: nil)
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execute(<<~SQL)
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CREATE TRIGGER #{name}
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#{fires}
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FOR EACH ROW
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EXECUTE PROCEDURE #{function_name}()
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SQL
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end
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def drop_function(name, if_exists: true)
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exists_clause = optional_clause(if_exists, "IF EXISTS")
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execute("DROP FUNCTION #{exists_clause} #{name}()")
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end
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def drop_trigger(table_name, name, if_exists: true)
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exists_clause = optional_clause(if_exists, "IF EXISTS")
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execute("DROP TRIGGER #{exists_clause} #{name} ON #{table_name}")
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end
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def create_comment(type, name, text)
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execute("COMMENT ON #{type} #{name} IS '#{text}'")
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end
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def tmp_table_name(base)
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hashed_base = Digest::SHA256.hexdigest(base).first(10)
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"#{base}_#{hashed_base}"
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end
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def object_name(table, type)
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identifier = "#{table}_#{type}"
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hashed_identifier = Digest::SHA256.hexdigest(identifier).first(10)
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"#{type}_#{hashed_identifier}"
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end
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def with_lock_retries(&block)
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Gitlab::Database::WithLockRetries.new({
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klass: self.class,
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logger: Gitlab::BackgroundMigration::Logger
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}).run(&block)
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end
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def assert_not_in_transaction_block(scope:)
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return unless transaction_open?
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raise "#{scope} operations can not be run inside a transaction block, " \
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"you can disable transaction blocks by calling disable_ddl_transaction! " \
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"in the body of your migration class"
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end
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private
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def create_range_partition(partition_name, table_name, lower_bound, upper_bound)
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execute(<<~SQL)
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CREATE TABLE #{partition_name} PARTITION OF #{table_name}
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FOR VALUES FROM (#{lower_bound}) TO (#{upper_bound})
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SQL
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end
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def optional_clause(flag, clause)
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flag ? clause : ""
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end
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end
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end
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end
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