Helper for calling PostgreSQL functions: pg_advisory_lock, pg_advisory_try_lock, and pg_advisory_unlock.
License: Other
Ruby 97.23%JavaScript 2.77%
pg_advisory_locker's Introduction
pg_advisory_locker
==================
Helper for calling PostgreSQL functions: pg_advisory_lock,
pg_advisory_try_lock, and pg_advisory_unlock.
Examples
========
Basic example of passing a block to the locker
class Foo < ActiveRecord::Base
include PgAdvisoryLocker
def self.lock_for_whatever(&block)
return lock_record(0, &block)
end
def self.do_something
lock_for_whatever do
# do something here
end
end
end
Advisory lock on id:
class Foo < ActiveRecord::Base
include PgAdvisoryLocker
def lock_for_whatever
return advisory_lock
end
def unlock_for_whatever
return advisory_unlock
end
def do_something
lock_for_whatever
begin
# do something
ensure
unlock_for_whatever
end
end
end