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# frozen_string_literal: true
module Gitlab
module Database
# This retry method behaves similar to WithLockRetries
# except it does not wrap itself into a transaction scope.
#
# In our context, this is only useful if directly connected to
# PostgreSQL. When going through pgbouncer, this method **won't work**
# as it relies on using `SET` outside transactions (and hence can be
# multiplexed across different connections).
class WithLockRetriesOutsideTransaction < WithLockRetries
private
def run_block_with_lock_timeout
execute("SET lock_timeout TO '#{current_lock_timeout_in_ms}ms'")
log(message: 'Lock timeout is set', current_iteration: current_iteration, lock_timeout_in_ms: current_lock_timeout_in_ms)
run_block
log(message: 'Migration finished', current_iteration: current_iteration, lock_timeout_in_ms: current_lock_timeout_in_ms)
end
def run_block_without_lock_timeout
log(message: "Couldn't acquire lock to perform the migration", current_iteration: current_iteration)
log(message: "Executing without lock timeout", current_iteration: current_iteration)
disable_lock_timeout
run_block
log(message: 'Migration finished', current_iteration: current_iteration)
end
def disable_lock_timeout
execute("SET lock_timeout TO '0'")
end
end
end
end
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