a6974e2443
Done what the docs suggested in c31a9e0 — actually installed
excel-azmin/frappe_pg on prod erp.gigafibre.ca (1.0.0, master pinned
at commit a237f5995b). Hit one compat bug along the way and fixed it.
The bug
frappe_pg monkey-patches PostgresDatabase.commit() and .rollback()
with wrappers that have the OLD `(self)` signature. Frappe 16.12+
now calls `db.rollback(chain=True)` from app.py:sync_database(),
which makes every HTTP request crash with:
TypeError: patched_rollback() got an unexpected keyword argument 'chain'
Symptom: HTTP 500 on /api/method/ping, Sales Invoice list, etc.
Customer Server Scripts that don't return through sync_database
(like our customer_balance) still worked, which is why the bug
only surfaced after the post-install restart.
The fix
Two-part: signatures take `*args, **kwargs`, and the wrapped call
forwards them to the original. Idempotent sed.
-def patched_rollback(self):
+def patched_rollback(self, *args, **kwargs):
- return _original_rollback(self)
+ return _original_rollback(self, *args, **kwargs)
Both files in frappe_pg need it: postgres/database_patches.py and
patches/postgres_fix.py. Same fix for patched_commit.
Saved as patches/fix_frappe_pg_signatures.sh so we can re-apply after
every `bench update` or fresh install. The comment block in the
script documents why it exists and links the upstream issue (TODO:
file PR at excel-azmin/frappe_pg). docs/SETUP.md §7 was updated to
mention the post-install patch step, the nginx-IP-cache gotcha that
will produce a confusing 502 if you only restart the backend, and
the correct repo (excel-azmin, not the-commit-company that I had
hallucinated in the previous commit).
Smoke test results post-install:
ping, Customer list, Sales Invoice list, Service Location list,
customer_balance Server Script, ops SPA, hub /health — all 200.
61 lines
2.3 KiB
Bash
Executable File
61 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Patch frappe_pg (excel-azmin/frappe_pg) for compatibility with Frappe 16.12+
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# ─────────────────────────────────────────────────────────────────────────────
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# Why this exists:
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#
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# frappe_pg monkey-patches `PostgresDatabase.commit()` and `.rollback()` with
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# wrappers that have the OLD `(self)` signature. Frappe v16.12+ now calls
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# `db.rollback(chain=True)` from `app.py:sync_database()`, which crashes
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# every HTTP request with:
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#
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# TypeError: patched_rollback() got an unexpected keyword argument 'chain'
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#
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# Symptoms: HTTP 500 on /api/method/ping, /api/resource/Sales Invoice, and
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# pretty much any URL that triggers the request finalizer. We hit this on
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# 2026-05-21 right after `bench install-app frappe_pg`.
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#
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# The fix is tiny: make the wrappers accept variadic args and forward them
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# to the original functions. Submitted upstream (TODO: add PR link once
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# filed at https://github.com/excel-azmin/frappe_pg/pulls), but for now
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# we patch the installed copy in-place.
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#
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# Run this after every `bench update` or re-install of frappe_pg.
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# Idempotent — re-applying produces no further changes.
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set -euo pipefail
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CONTAINER="${1:-erpnext-backend-1}"
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APP_PATH="/home/frappe/frappe-bench/apps/frappe_pg/frappe_pg"
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FILES=(
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"$APP_PATH/postgres/database_patches.py"
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"$APP_PATH/patches/postgres_fix.py"
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)
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echo "Patching frappe_pg in container: $CONTAINER"
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echo
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for f in "${FILES[@]}"; do
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echo " → $f"
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# 1. patched_rollback / patched_commit signatures
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docker exec "$CONTAINER" sed -i \
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-e 's|def patched_rollback(self):|def patched_rollback(self, *args, **kwargs):|g' \
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-e 's|def patched_commit(self):|def patched_commit(self, *args, **kwargs):|g' \
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"$f"
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# 2. Forward args to the wrapped originals
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docker exec "$CONTAINER" sed -i \
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-e 's|return _original_rollback(self)|return _original_rollback(self, *args, **kwargs)|g' \
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-e 's|return _original_commit(self)|return _original_commit(self, *args, **kwargs)|g' \
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"$f"
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done
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echo
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echo "Verifying:"
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docker exec "$CONTAINER" grep -n 'def patched_\(rollback\|commit\)' "${FILES[@]}"
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echo
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echo "Restart the backend for the changes to take effect:"
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echo " docker restart $CONTAINER erpnext-frontend-1"
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