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Fix AsyncPostgresDB initialization retry logic #440

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Fix AsyncPostgresDB initialization retry logic #440

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13 changes: 8 additions & 5 deletions services/migration_service/data/postgres_async_db.py
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Original file line number Diff line number Diff line change
Expand Up @@ -35,15 +35,18 @@ def __init__(self):
AsyncPostgresDB.__instance = self

async def _init(self, db_conf: DBConfiguration):
# todo make poolsize min and max configurable as well as timeout
# todo add retry and better error message
retries = 3
for i in range(retries):
# todo make poolsize min and max configurable
max_attempts = 3
while max_attempts > 0:
try:
self.pool = await aiopg.create_pool(db_conf.get_dsn(), timeout=db_conf.timeout)
break
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would it not have been sufficient to just add the break to the original code?

except Exception as e:
print("printing connection exception: " + str(e))
if retries - i < 1:
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I see this is never actually hit as range excludes the end, but can be fixed with a slight tweak f.ex.

if retries-(i+1) < 1:


max_attempts -= 1
if max_attempts == 0:
raise e

time.sleep(1)
continue