counts.py: Remove filter_args argument from CountStat definition.

It turned out to not be that useful once we added subgroup. The previous
design of the CountStat object also assumed more reuseability of the *_query
strings than what ended up happening.

The filter_args also had some carrying costs:

* It's hard to be confident that filter_args other than the ones explicitly
  in our tests would have had expected behavior.
* The filter_args/join_args system is the most complex part of the CountStat
  object, and makes understanding the *_query strings unnecessarily
  difficult for a new contributor.
This commit is contained in:
Rishi Gupta 2017-03-31 23:11:44 -07:00 committed by Tim Abbott
parent 4dfadba244
commit 661de6bf25
3 changed files with 14 additions and 27 deletions

View File

@ -37,12 +37,11 @@ class CountStat(object):
DAY = 'day'
FREQUENCIES = frozenset([HOUR, DAY])
def __init__(self, property, zerver_count_query, filter_args, group_by, frequency, interval=None):
# type: (str, ZerverCountQuery, Dict[str, bool], Optional[Tuple[models.Model, str]], str, Optional[timedelta]) -> None
def __init__(self, property, zerver_count_query, group_by, frequency, interval=None):
# type: (str, ZerverCountQuery, Optional[Tuple[models.Model, str]], str, Optional[timedelta]) -> None
self.property = property
self.zerver_count_query = zerver_count_query
# might have to do something different for bitfields
self.filter_args = filter_args
self.group_by = group_by
if frequency not in self.FREQUENCIES:
raise AssertionError("Unknown frequency: %s" % (frequency,))
@ -63,14 +62,14 @@ class CountStat(object):
class LoggingCountStat(CountStat):
def __init__(self, property, analytics_table, frequency):
# type: (str, Type[BaseCount], str) -> None
CountStat.__init__(self, property, ZerverCountQuery(None, analytics_table, None), {},
CountStat.__init__(self, property, ZerverCountQuery(None, analytics_table, None),
None, frequency)
self.is_logging = True
class CustomPullCountStat(CountStat):
def __init__(self, property, analytics_table, frequency, custom_pull_function):
# type: (str, Type[BaseCount], str, Callable[[CountStat, datetime, datetime], None]) -> None
CountStat.__init__(self, property, ZerverCountQuery(None, analytics_table, None), {},
CountStat.__init__(self, property, ZerverCountQuery(None, analytics_table, None),
None, frequency)
self.custom_pull_function = custom_pull_function
@ -203,8 +202,6 @@ def do_aggregate_to_summary_table(stat, end_time):
def do_pull_from_zerver(stat, start_time, end_time):
# type: (CountStat, datetime, datetime) -> None
zerver_table = stat.zerver_count_query.zerver_table._meta.db_table # type: ignore
join_args = ' '.join('AND %s.%s = %s' % (zerver_table, key, value)
for key, value in stat.filter_args.items())
if stat.group_by is None:
subgroup = 'NULL'
group_by_clause = ''
@ -212,12 +209,11 @@ def do_pull_from_zerver(stat, start_time, end_time):
subgroup = '%s.%s' % (stat.group_by[0]._meta.db_table, stat.group_by[1])
group_by_clause = ', ' + subgroup
# We do string replacement here because passing join_args as a param
# We do string replacement here because passing group_by_clause as a param
# may result in problems when running cursor.execute; we do
# the string formatting prior so that cursor.execute runs it as sql
query_ = stat.zerver_count_query.query % {'zerver_table': zerver_table,
'property': stat.property,
'join_args': join_args,
'subgroup': subgroup,
'group_by_clause': group_by_clause}
cursor = connection.cursor()
@ -284,7 +280,6 @@ count_message_by_user_query = """
zerver_userprofile.date_joined < %%(time_end)s AND
zerver_message.pub_date >= %%(time_start)s AND
zerver_message.pub_date < %%(time_end)s
%(join_args)s
GROUP BY zerver_userprofile.id %(group_by_clause)s
"""
zerver_count_message_by_user = ZerverCountQuery(Message, UserCount, count_message_by_user_query)
@ -303,7 +298,6 @@ count_stream_by_realm_query = """
zerver_realm.date_created < %%(time_end)s AND
zerver_stream.date_created >= %%(time_start)s AND
zerver_stream.date_created < %%(time_end)s
%(join_args)s
GROUP BY zerver_realm.id %(group_by_clause)s
"""
zerver_count_stream_by_realm = ZerverCountQuery(Stream, RealmCount, count_stream_by_realm_query)
@ -335,7 +329,6 @@ count_message_type_by_user_query = """
zerver_userprofile.id = zerver_message.sender_id AND
zerver_message.pub_date >= %%(time_start)s AND
zerver_message.pub_date < %%(time_end)s
%(join_args)s
JOIN zerver_recipient
ON
zerver_message.recipient_id = zerver_recipient.id
@ -372,7 +365,6 @@ count_message_by_stream_query = """
zerver_recipient.type = 2 AND
zerver_message.pub_date >= %%(time_start)s AND
zerver_message.pub_date < %%(time_end)s
%(join_args)s
GROUP BY zerver_stream.id %(group_by_clause)s
"""
zerver_count_message_by_stream = ZerverCountQuery(Message, StreamCount, count_message_by_stream_query)
@ -389,7 +381,6 @@ check_useractivityinterval_by_user_query = """
WHERE
zerver_useractivityinterval.end >= %%(time_start)s AND
zerver_useractivityinterval.start < %%(time_end)s
%(join_args)s
GROUP BY zerver_userprofile.id %(group_by_clause)s
"""
zerver_check_useractivityinterval_by_user = ZerverCountQuery(
@ -450,32 +441,32 @@ def do_pull_minutes_active(stat, start_time, end_time):
(stat.property, (time.time()-timer_start)*1000, len(rows)))
count_stats_ = [
CountStat('messages_sent:is_bot:hour', zerver_count_message_by_user, {},
CountStat('messages_sent:is_bot:hour', zerver_count_message_by_user,
(UserProfile, 'is_bot'), CountStat.HOUR),
CountStat('messages_sent:message_type:day', zerver_count_message_type_by_user, {},
CountStat('messages_sent:message_type:day', zerver_count_message_type_by_user,
None, CountStat.DAY),
CountStat('messages_sent:client:day', zerver_count_message_by_user, {},
CountStat('messages_sent:client:day', zerver_count_message_by_user,
(Message, 'sending_client_id'), CountStat.DAY),
CountStat('messages_in_stream:is_bot:day', zerver_count_message_by_stream, {},
CountStat('messages_in_stream:is_bot:day', zerver_count_message_by_stream,
(UserProfile, 'is_bot'), CountStat.DAY),
# Sanity check on the bottom two stats. Is only an approximation,
# e.g. if a user is deactivated between the end of the day and when this
# stat is run, they won't be counted.
CountStat('active_users:is_bot:day', zerver_count_user_by_realm, {},
CountStat('active_users:is_bot:day', zerver_count_user_by_realm,
(UserProfile, 'is_bot'), CountStat.DAY, interval=TIMEDELTA_MAX),
# In RealmCount, 'active_humans_audit::day' should be the partial sum sequence
# of 'active_users_log:is_bot:day', for any realm that started after the
# latter stat was introduced.
# 'active_users_audit:is_bot:day' is the canonical record of which users were
# active on which days (in the UserProfile.is_active sense).
CountStat('active_users_audit:is_bot:day', zerver_check_realmauditlog_by_user, {},
CountStat('active_users_audit:is_bot:day', zerver_check_realmauditlog_by_user,
(UserProfile, 'is_bot'), CountStat.DAY),
LoggingCountStat('active_users_log:is_bot:day', RealmCount, CountStat.DAY),
# The minutes=15 part is due to the 15 minutes added in
# zerver.lib.actions.do_update_user_activity_interval.
CountStat('15day_actives::day', zerver_check_useractivityinterval_by_user, {},
CountStat('15day_actives::day', zerver_check_useractivityinterval_by_user,
None, CountStat.DAY, interval=timedelta(days=15)-timedelta(minutes=15)),
CustomPullCountStat('minutes_active::day', UserCount, CountStat.DAY, do_pull_minutes_active)
]

View File

@ -160,7 +160,7 @@ class TestProcessCountStat(AnalyticsTestCase):
dummy_query = """INSERT INTO analytics_realmcount (realm_id, property, end_time, value)
VALUES (1, 'test stat', '%(end_time)s', 22)""" % {'end_time': current_time}
stat = CountStat('test stat', ZerverCountQuery(Recipient, UserCount, dummy_query),
{}, None, CountStat.HOUR)
None, CountStat.HOUR)
return stat
def assertFillStateEquals(self, end_time, state=FillState.DONE, property=None):

View File

@ -90,14 +90,10 @@ realm.
"\<english_description\>:\<subgroup_name\>:\<frequency\>". Example:
"active_users:is_bot:day".
- zerver_count_query: A ZerverCountQuery object, which contains a
- zerver_table: A table in zerver/models.py, to which filter_args are
applied. E.g. UserProfile.
- zerver_table: A table in zerver/models.py. E.g. UserProfile.
- analytics_table: The *Count table where the data is initially
collected. E.g. RealmCount.
- query: A parameterized raw SQL string. E.g. count_user_by_realm_query.
- filter_args: Filters the zerver_table. Example: {'is_active': True}, which
restricts the UserProfiles under consideration to those with
`UserProfile.is_active = True` .
- group_by: The (table, field) being used for the
subgroup. E.g. (UserProfile, is_bot).
- frequency: How often to run the CountStat. Either 'hour' or