Module: Switchman::ActiveRecord::Migrator

Defined in:
lib/switchman/active_record/migration.rb

Instance Method Summary collapse

Instance Method Details

#generate_migrator_advisory_lock_id ⇒ Object

significant change: just return MIGRATOR_SALT directly especially if you’re going through pgbouncer, the database name you’re accessing may not be consistent. it is NOT allowed to run migrations against multiple shards in the same database concurrently



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# File 'lib/switchman/active_record/migration.rb', line 28

def generate_migrator_advisory_lock_id
  ::ActiveRecord::Migrator::MIGRATOR_SALT
end

#with_advisory_lock_connection ⇒ Object

significant change: strip out prefer_secondary from config



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# File 'lib/switchman/active_record/migration.rb', line 33

def with_advisory_lock_connection
  pool = ::ActiveRecord::ConnectionAdapters::ConnectionHandler.new.establish_connection(
    ::ActiveRecord::Base.connection_db_config.configuration_hash.except(:prefer_secondary)
  )

  pool.with_connection { |connection| yield(connection) } # rubocop:disable Style/ExplicitBlockArgument
ensure
  pool&.disconnect!
end