Files
shopdb-flask/shopdb/utils/cmmc_usb_db.py
cproudlock 65b0197b2b Document external-DB schema contracts for employees + USB plugins
Every site's HR directory and USB check-in/out databases may use a different
schema, so document exactly what each plugin queries and how to adapt.

- plugins/employees/README.md: required employees table columns (SSO,
  First_Name, Last_Name, Team, Role, Picture), the queries run, photo handling,
  and a CREATE VIEW recipe to map a different site schema without code changes.
- plugins/usb/README.md: cmmc_usb devices / checkinoutlog / users columns,
  read-write ops, the employee-directory dependency, and a view recipe.
- USB plugin gains get_config_schema() (cmmc_usb_db_host/name/user + password);
  cmmc_usb_connection reads host/name/user settings-first (env fallback), the
  password stays env-only - matching the employees plugin.
- Config-field help points at the READMEs.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-10 08:19:26 -04:00

39 lines
1.4 KiB
Python

"""Connection helper for the CMMC USB check-in/out database.
Credentials are pulled from app config (env-backed, see Config.CMMC_USB_DB_*),
never hardcoded. Used by the USB plugin to track device check-in/out against a
separate MySQL database (cmmc_usb), mirroring the read-only employee-directory
pattern in employee_db.py. Unlike the employee DB this one is read-write, so
callers commit their own writes and close the connection in a finally block.
"""
import pymysql
from flask import current_app
def _setting_or_config(setting_key, config_key):
"""Non-secret config: a saved Setting wins, else the env-backed app config.
Lets the setup wizard edit host/name/user without touching .env, while the
password stays env-only.
"""
from shopdb.core.models import Setting
try:
row = Setting.query.filter_by(key=setting_key).first()
if row and row.value:
return row.value
except Exception:
pass
return current_app.config[config_key]
def cmmc_usb_connection():
"""Open a pymysql connection to the cmmc_usb DB."""
return pymysql.connect(
host=_setting_or_config('cmmc_usb_db_host', 'CMMC_USB_DB_HOST'),
user=_setting_or_config('cmmc_usb_db_user', 'CMMC_USB_DB_USER'),
password=current_app.config['CMMC_USB_DB_PASSWORD'],
database=_setting_or_config('cmmc_usb_db_name', 'CMMC_USB_DB_NAME'),
cursorclass=pymysql.cursors.DictCursor,
)