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46 changes: 31 additions & 15 deletions ietf/group/views.py
Original file line number Diff line number Diff line change
Expand Up @@ -740,23 +740,40 @@ def dependencies(request, acronym, group_type=None):
source__type="draft",
relationship__slug__startswith="ref",
)

both_rfcs = Q(source__type_id="rfc", target__type_id="rfc")
inactive = Q(source__states__slug__in=["expired", "repl"])
rfc_or_subseries = {"rfc", "bcp", "fyi", "std"}
both_rfcs = Q(source__type_id="rfc", target__type_id__in=rfc_or_subseries)
pre_rfc_draft_to_rfc = Q(
source__states__type="draft",
source__states__slug="rfc",
target__type_id__in=rfc_or_subseries,
)
both_pre_rfcs = Q(
source__states__type="draft",
source__states__slug="rfc",
target__type_id="draft",
target__states__type="draft",
target__states__slug="rfc",
)
inactive = Q(
source__states__type="draft",
source__states__slug__in=["expired", "repl"],
)
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jennifer-richards marked this conversation as resolved.
attractor = Q(target__name__in=["rfc5000", "rfc5741"])
removed = Q(source__states__slug__in=["auth-rm", "ietf-rm"])
removed = Q(source__states__type="draft", source__states__slug__in=["auth-rm", "ietf-rm"])
relations = (
RelatedDocument.objects.filter(references)
.exclude(both_rfcs)
.exclude(pre_rfc_draft_to_rfc)
.exclude(both_pre_rfcs)
.exclude(inactive)
.exclude(attractor)
.exclude(removed)
)

links = set()
for x in relations:
target_state = x.target.get_state_slug("draft")
if target_state != "rfc" or x.is_downref():
always_include = x.target.type_id not in rfc_or_subseries and x.target.get_state_slug("draft") != "rfc"
if always_include or x.is_downref():
links.add(x)

replacements = RelatedDocument.objects.filter(
Expand All @@ -771,13 +788,12 @@ def dependencies(request, acronym, group_type=None):
graph = {
"nodes": [
{
"id": x.name,
"rfc": x.get_state("draft").slug == "rfc",
"post-wg": not x.get_state("draft-iesg").slug
in ["idexists", "watching", "dead"],
"expired": x.get_state("draft").slug == "expired",
"replaced": x.get_state("draft").slug == "repl",
"group": x.group.acronym if x.group.acronym != "none" else "",
"id": x.became_rfc().name if x.became_rfc() else x.name,

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Check this on a busy group and if the time is noticeable, I think we can get the db to grab this with the primary query instead of n+1 -ing it here.

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We might do that in a way the puts the conditional into the query as well, so that we don't see this pattern repeating.

@jennifer-richards jennifer-richards Dec 13, 2023

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On the idr group (see below to gauge whether this is "busy", but it looks it to me), this brute force approach takes the request from 2-2.4 seconds up to 2.2-2.5 seconds on my dev machine. The code here is taking advantage of the caching in became_rfc(), so I believe it's at least only paying the N+1 penalty and not hammering the db any worse than that.

(edit to add: the faster time is what I get if I replace all the became_rfc() calls with simple references to name or remove them entirely in the nodes.rfc logic)

image

"rfc": x.type_id == "rfc" or x.became_rfc() is not None,
"post-wg": x.get_state_slug("draft-iesg") not in ["idexists", "watching", "dead"],
"expired": x.get_state_slug("draft") == "expired",
"replaced": x.get_state_slug("draft") == "repl",
"group": x.group.acronym if x.group and x.group.acronym != "none" else "",
"url": x.get_absolute_url(),
"level": x.intended_std_level.name
if x.intended_std_level
Expand All @@ -789,8 +805,8 @@ def dependencies(request, acronym, group_type=None):
],
"links": [
{
"source": x.source.name,
"target": x.target.name,
"source": x.source.became_rfc().name if x.source.became_rfc() else x.source.name,
"target": x.target.became_rfc().name if x.target.became_rfc() else x.target.name,
"rel": "downref" if x.is_downref() else x.relationship.slug,
}
for x in links
Expand Down