Updated functionalities 2

2026-04-25 12:41:24 -04:00
parent a515df6a02
commit 111ec5c740
11 changed files with 280 additions and 11 deletions
@@ -0,0 +1,82 @@
+"""Phase 12: Add performance indexes on high-filter columns
+
+Revision ID: phase12_performance_indexes
+Revises: phase11_director_role
+Create Date: 2026-04-25
+
+Rationale
+---------
+The following columns are filtered or ordered on every page load but had no
+DB index, causing full table scans as row counts grow:
+
+  inspections
+    - status          — filtered on list/dashboard/SLA queries
+    - facility_id     — filtered for customer-scoped views and reports
+    - inspector_id    — filtered for inspector-scoped views
+    - inspection_date — used in all trend/score queries (ORDER BY, range filter)
+
+  issues
+    - status          — filtered on every issues list/dashboard load
+    - severity        — filtered in dashboard breakdown and issues list
+    - assigned_to     — filtered for inspector-scoped views
+    - reported_at     — used for ordering
+
+All indexes are created with IF NOT EXISTS so the migration is safe to re-run.
+"""
+
+from alembic import op
+
+revision      = 'phase12_performance_indexes'
+down_revision = 'phase11_director_role'
+branch_labels = None
+depends_on    = None
+
+
+def upgrade():
+    # ── inspections ──────────────────────────────────────────────────────────
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_inspections_status "
+        "ON inspections (status)"
+    )
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_inspections_facility_id "
+        "ON inspections (facility_id)"
+    )
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_inspections_inspector_id "
+        "ON inspections (inspector_id)"
+    )
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_inspections_inspection_date "
+        "ON inspections (inspection_date)"
+    )
+
+    # ── issues ───────────────────────────────────────────────────────────────
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_issues_status "
+        "ON issues (status)"
+    )
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_issues_severity "
+        "ON issues (severity)"
+    )
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_issues_assigned_to "
+        "ON issues (assigned_to)"
+    )
+    op.execute(
+        "CREATE INDEX IF NOT EXISTS ix_issues_reported_at "
+        "ON issues (reported_at)"
+    )
+
+
+def downgrade():
+    op.execute("DROP INDEX IF EXISTS ix_inspections_status      ON inspections")
+    op.execute("DROP INDEX IF EXISTS ix_inspections_facility_id ON inspections")
+    op.execute("DROP INDEX IF EXISTS ix_inspections_inspector_id ON inspections")
+    op.execute("DROP INDEX IF EXISTS ix_inspections_inspection_date ON inspections")
+
+    op.execute("DROP INDEX IF EXISTS ix_issues_status      ON issues")
+    op.execute("DROP INDEX IF EXISTS ix_issues_severity    ON issues")
+    op.execute("DROP INDEX IF EXISTS ix_issues_assigned_to ON issues")
+    op.execute("DROP INDEX IF EXISTS ix_issues_reported_at ON issues")