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authorDan McGee <dan@archlinux.org>2011-11-04 12:38:57 -0500
committerDan McGee <dan@archlinux.org>2011-11-04 12:38:57 -0500
commit28f72db7be7bf2f54d734c78422e6179f0ce29f1 (patch)
tree06e582423652279aa2dea2635ccde3e05fab300b /packages/utils.py
parente15654fd7cbd5bf5e9a5c7d59b6b2a50999ee467 (diff)
Rewrite get_target_repo_map() using raw SQL
This improves the shitty query plan brought upon us by MySQL by rewriting it to use JOINs only and no dependent subqueries. Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'packages/utils.py')
-rw-r--r--packages/utils.py28
1 files changed, 20 insertions, 8 deletions
diff --git a/packages/utils.py b/packages/utils.py
index ddd822e4..b21ac557 100644
--- a/packages/utils.py
+++ b/packages/utils.py
@@ -310,12 +310,25 @@ def get_current_specifications(repos):
to_fetch = [row[0] for row in results]
return SignoffSpecification.objects.in_bulk(to_fetch).values()
-def get_target_repo_map(pkgbases):
- package_repos = Package.objects.order_by().values_list(
- 'pkgbase', 'repo__name').filter(
- repo__testing=False, repo__staging=False,
- pkgbase__in=pkgbases).distinct()
- return dict(package_repos)
+def get_target_repo_map(repos):
+ sql = """
+SELECT DISTINCT p1.pkgbase, r.name
+ FROM packages p1
+ JOIN repos r ON p1.repo_id = r.id
+ JOIN packages p2 ON p1.pkgbase = p2.pkgbase
+ WHERE r.staging = %s
+ AND r.testing = %s
+ AND p2.repo_id IN (
+ """
+ sql += ','.join(['%s' for r in repos])
+ sql += ")"
+
+ params = [False, False]
+ params.extend(r.pk for r in repos)
+
+ cursor = connection.cursor()
+ cursor.execute(sql, params)
+ return dict(cursor.fetchall())
def get_signoff_groups(repos=None):
if repos is None:
@@ -328,8 +341,7 @@ def get_signoff_groups(repos=None):
packages = attach_maintainers(packages)
# Collect all pkgbase values in testing repos
- q_pkgbase = test_pkgs.values('pkgbase')
- pkgtorepo = get_target_repo_map(q_pkgbase)
+ pkgtorepo = get_target_repo_map(repos)
# Collect all possible signoffs and specifications for these packages
signoffs = get_current_signoffs(repos)