module PgAdvisoryLocker

advisory lock this row associated identified by model#id

blocks until advisory lock is release acquires lock on return

if block is passed in, lock/unlock around the block

# File lib/pg_advisory_locker/pg_advisory_locker.rb, line 12
def advisory_lock(&block)
  return self.class.lock_record(id, &block)
end

advisory try lock this row associated identified by model#id

if lock is acquired, acquires lock and returns true if lock is currently acquired, returns false never blocks

if block is passed in, lock/unlock around the block executing block only if lock is acquired

# File lib/pg_advisory_locker/pg_advisory_locker.rb, line 24
def advisory_try_lock(&block)
  return self.class.try_lock_record(id, &block)
end

advisory unlock this row associated identified by model#id

on return releases lock

# File lib/pg_advisory_locker/pg_advisory_locker.rb, line 31
def advisory_unlock
  self.class.unlock_record(id)
end