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perf: Extract Stream.get_client_data.

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This function slims down the data that we get
from the database in order to create the
streams part of our client payload.

We also fix a typo.

We also clearly distinguish between queries
and lists here.
This commit is contained in:
Steve Howell
2020-02-29 20:51:06 +00:00
committed by Tim Abbott
parent 49b8218463
commit 94192395fb
2 changed files with 14 additions and 7 deletions
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13
zerver/lib/actions.py
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@@ -5421,7 +5421,7 @@ def get_occupied_streams(realm: Realm) -> QuerySet:
def get_web_public_streams(realm: Realm) -> List[Dict[str, Any]]:
query = Stream.objects.filter(realm=realm, deactivated=False, is_web_public=True)
streams = [(row.to_dict()) for row in query]
streams = Stream.get_client_data(query)
return streams
def do_get_streams(
@@ -5436,7 +5436,9 @@ def do_get_streams(
# Start out with all streams in the realm with subscribers
query = get_occupied_streams(user_profile.realm)
if not include_all_active:
if include_all_active:
streams = Stream.get_client_data(query)
else:
# We construct a query as the or (|) of the various sources
# this user requested streams from.
query_filter = None # type: Optional[Q]
@@ -5464,12 +5466,13 @@ def do_get_streams(
if query_filter is not None:
query = query.filter(query_filter)
streams = Stream.get_client_data(query)
else:
# Don't bother doing to the database with no valid sources
query = []
# Don't bother going to the database with no valid sources
streams = []
streams = [(row.to_dict()) for row in query]
streams.sort(key=lambda elt: elt["name"])
if include_default:
is_default = {}
default_streams = get_default_streams_for_realm(user_profile.realm_id)