My code has roughly the following form, and I am wondering if this can
generate a race condition or if the first insert happens right away:
def receive_webhook():
def POST(*args, **vars):
db.webhook_table.insert(webhook_data=data, status=0)
scheduler.queue_task(process_update)
#....some other code happens after this
The code in my Scheduler.py:
def process_update():
import json
record = db(db.webhook_table.status == 0).select(limitby=(0, 1),
orderby=~db.webhook_table.create_date).as_list()
# CAN THIS SELECT FINISH BEFORE THE INSERT FROM receive_webhook IS
RECORDED IN THE DB OR IS THE INSERT FINISHED IMMEDIATEDLY
state = json.loads(record[0]['webhook_data'])['status']
if not state == 'Updated':
db(db.webhook_table.id == record[0]['id']).update(status=2)
db.commit()
from gluon.scheduler import Scheduler
scheduler = Scheduler(db)
Can this create a race condition? If so what is the best way to fix it so
that it can't?
The status update(status=2) from the second code block appears to be
executing sometimes but not all the time.
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