def get_love(sender_username=None, recipient_username=None, limit=None):
"""Get all love from a particular sender or to a particular recipient.
:param sender_username: If present, only return love sent from a particular user.
:param recipient_username: If present, only return love sent to a particular user.
:param limit: If present, only return this many items.
"""
sender_username = logic.alias.name_for_alias(sender_username)
recipient_username = logic.alias.name_for_alias(recipient_username)
if not (sender_username or recipient_username):
raise TaintedLove(
'Not gonna give you all the love in the world. Sorry.')
if sender_username == recipient_username:
raise TaintedLove('Who sends love to themselves? Honestly?')
love_query = (
Love.query().filter(Love.secret == False) # noqa
.order(-Love.timestamp))
if sender_username:
sender_key = Employee.get_key_for_username(sender_username)
love_query = love_query.filter(Love.sender_key == sender_key)
if recipient_username:
recipient_key = Employee.get_key_for_username(recipient_username)
love_query = love_query.filter(Love.recipient_key == recipient_key)
if limit:
return love_query.fetch_async(limit)
else:
return love_query.fetch_async()
def rebuild_love_count():
utc_dt = datetime.datetime.utcnow() - datetime.timedelta(
days=7) # rebuild last week and this week
week_start, _ = utc_week_limits(utc_dt)
set_toggle_state(LOVE_SENDING_ENABLED, False)
logging.info('Deleting LoveCount table... {}MB'.format(
memory_usage().current()))
ndb.delete_multi(
LoveCount.query(LoveCount.week_start >= week_start).fetch(
keys_only=True))
employee_dict = {employee.key: employee for employee in Employee.query()}
logging.info('Rebuilding LoveCount table... {}MB'.format(
memory_usage().current()))
cursor = None
count = 0
while True:
loves, cursor, has_more = Love.query(
Love.timestamp >= week_start).fetch_page(500, start_cursor=cursor)
for l in loves:
LoveCount.update(l, employee_dict=employee_dict)
count += len(loves)
logging.info('Processed {} loves, {}MB'.format(
count,
memory_usage().current()))
if not has_more:
break
logging.info('Done. {}MB'.format(memory_usage().current()))
set_toggle_state(LOVE_SENDING_ENABLED, True)
def _love_query(start_dt, end_dt, include_secret):
query = Love.query().order(-Love.timestamp)
if type(start_dt) is datetime:
query = query.filter(Love.timestamp >= start_dt)
if type(end_dt) is datetime:
query = query.filter(Love.timestamp <= end_dt)
if type(include_secret) is bool and include_secret is False:
query = query.filter(Love.secret == False) # noqa
return query
def rebuild_love_count():
set_toggle_state(LOVE_SENDING_ENABLED, False)
logging.info('Rebuilding LoveCount table...')
ndb.delete_multi(LoveCount.query().fetch(keys_only=True))
for l in Love.query().iter(batch_size=1000):
LoveCount.update(l)
logging.info('Done.')
set_toggle_state(LOVE_SENDING_ENABLED, True)
def combine_employees(old_username, new_username):
set_toggle_state(LOVE_SENDING_ENABLED, False)
old_employee_key = Employee.query(Employee.username == old_username).get(
keys_only=True)
new_employee_key = Employee.query(Employee.username == new_username).get(
keys_only=True)
if not old_employee_key:
raise NoSuchEmployee(old_username)
elif not new_employee_key:
raise NoSuchEmployee(new_username)
# First, we need to update the actual instances of Love sent to/from the old employee
logging.info('Reassigning {}\'s love to {}...'.format(
old_username, new_username))
love_to_save = []
# Reassign all love sent FROM old_username
for sent_love in Love.query(Love.sender_key == old_employee_key).iter():
sent_love.sender_key = new_employee_key
love_to_save.append(sent_love)
# Reassign all love sent TO old_username
for received_love in Love.query(
Love.recipient_key == old_employee_key).iter():
received_love.recipient_key = new_employee_key
love_to_save.append(received_love)
ndb.put_multi(love_to_save)
logging.info('Done.')
# Second, we need to update the LoveCount table
logging.info('Updating LoveCount table...')
love_counts_to_delete, love_counts_to_save = [], []
for old_love_count in LoveCount.query(ancestor=old_employee_key).iter():
# Try to find a corresponding row for the new employee
new_love_count = LoveCount.query(
ancestor=new_employee_key,
filters=(LoveCount.week_start == old_love_count.week_start)).get()
if new_love_count is None:
# If there's no corresponding row for the new user, create one
new_love_count = LoveCount(
parent=new_employee_key,
received_count=old_love_count.received_count,
sent_count=old_love_count.sent_count,
week_start=old_love_count.week_start)
else:
# Otherwise, combine the two rows
new_love_count.received_count += old_love_count.received_count
new_love_count.sent_count += old_love_count.sent_count
# You `delete` keys but you `put` entities... Google's APIs are weird
love_counts_to_delete.append(old_love_count.key)
love_counts_to_save.append(new_love_count)
ndb.delete_multi(love_counts_to_delete)
ndb.put_multi(love_counts_to_save)
logging.info('Done.')
# Now we can delete the old employee
logging.info('Deleting employee {}...'.format(old_username))
old_employee_key.delete()
logging.info('Done.')
# ... Which means we need to rebuild the index
rebuild_index()
set_toggle_state(LOVE_SENDING_ENABLED, True)