I am using flask, and have a route that sends emails to people. I am using threading to send them faster. When i run it on my local machine it takes about 12 seconds to send 300 emails. But when I run it on lambda thorough API Gateway it times out. here's my code:
import threading
def async_mail(app, msg):
with app.app_context():
mail.send(msg)
def mass_mail_sender(order, user, header):
html = render_template('emails/pickup_mail.html', bruger_order=order.ordre, produkt=order.produkt)
msg = Message(recipients=[user],
sender=('Sender', 'infor@example.com'),
html=html,
subject=header)
thread = threading.Thread(target=async_mail, args=[create_app(), msg])
thread.start()
return thread
@admin.route('/lager/<url_id>/opdater', methods=['POST'])
def update_stock(url_id):
start = time.time()
if current_user.navn != 'Admin':
abort(403)
if request.method == 'POST':
produkt = Produkt.query.filter_by(url_id=url_id)
nyt_antal = int(request.form['bestilt_hjem'])
produkt.balance = nyt_antal
produkt.bestilt_hjem = nyt_antal
db.session.commit()
orders = OrdreBog.query.filter(OrdreBog.produkt.has(func.lower(Produkt.url_id == url_id))) \
.filter(OrdreBog.produkt_status == 'Ikke klar').all()
threads = []
for order in orders:
if order.antal <= nyt_antal:
nyt_antal -= order.antal
new_thread = mass_mail_sender(order, order.ordre.bruger.email, f'Din bog {order.produkt.titel} er klar til afhentning')
threads.append(new_thread)
order.produkt_status = 'Klar til afhentning'
db.session.commit()
for thread in threads:
try:
thread.join()
except Exception:
pass
end = time.time()
print(end - start)
return 'Emails sendt'
return ''
