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Dealing with open transactions when using advisory lock. Issue #14 #15

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Merged
mceachen merged 1 commit into from
Jul 22, 2016
Merged

Dealing with open transactions when using advisory lock. Issue #14 #15

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10 changes: 8 additions & 2 deletions lib/with_advisory_lock/postgresql.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -2,11 +2,17 @@ module WithAdvisoryLock
class PostgreSQL < Base
# See http://www.postgresql.org/docs/9.1/static/functions-admin.html#FUNCTIONS-ADVISORY-LOCKS
def try_lock
execute_successful?('pg_try_advisory_lock')
if connection.open_transactions > 0
execute_successful?('pg_try_advisory_xact_lock')
else
execute_successful?('pg_try_advisory_lock')
end
end

def release_lock
execute_successful?('pg_advisory_unlock')
if connection.open_transactions <= 0
execute_successful?('pg_advisory_unlock')
end
end

def execute_successful?(pg_function)
Expand Down