Files
shopdb-flask/scripts/site_imports/wjf/harness.py
Cam Proudlock 8666e0271c Reciprocal controls links, dead chip links, and a resumable legacy import
The machine page now shows the PC that controls it. The endpoint was correct all
along and returned both directions; AssetTriageBand discarded every peer whose
type was not 'machine' and was mounted only on the PC page. The counterpart type,
label and relationship types are now props.

Fixed while adopting it more widely: every band chip linked to /assets/<id>, and
there is no such route. The resolver that AssetRelationships.vue kept privately
is now frontend/src/utils/assetRoute.js, used by both - and its type lookup is
case-insensitive, because seed data capitalises the type names while this site's
database does not.

The legacy import is now safe to resume. The 409-resolve asked for
per_page=10000 against a server that clamps to 100, so it silently searched the
first 100 rows and dropped links past that on every re-run. The crosswalk is now
bound to the database it describes, so one carried across a rebuild is refused
rather than attaching rows to the wrong assets. Source database names are
resolved from the environment, so the loader can be aimed without editing it.

Full suite 2178 passed, frontend 280 passed.
2026-08-29 19:09:06 -04:00

307 lines
13 KiB
Python

"""Import harness for the WJ classic-ASP -> flask reference loader.
This is SITE-SPECIFIC reference glue, NOT product code. It maps West Jefferson's
classic schema onto the maintained, schema-agnostic import contract in
the IMPORT-API wiki page. Other sites copy this pattern against their own source DB;
they do not run this loader.
The harness builds the flask app against the current DATABASE_URL (point it at a
throwaway import database), mints an unscoped admin PAT in-process, and drives
the REAL import endpoints through the app test client with the X-Import-Mode
header - so it exercises the same routes/authz/validation an HTTP client would,
without needing a running server. Legacy-id -> new-id maps persist to JSON so a
crashed run resumes and later stages resolve foreign keys.
"""
import json
import uuid
import os
import pymysql
from shopdb import create_app
from shopdb.extensions import db
def _source_password():
"""Root password for the scratch source DBs: reuse the dev DATABASE_URL in
.env unless SOURCE_DB_PASSWORD overrides."""
if os.environ.get('SOURCE_DB_PASSWORD'):
return os.environ['SOURCE_DB_PASSWORD']
env = os.path.join(os.path.dirname(__file__), '..', '..', '..', '.env')
with open(os.path.abspath(env)) as handle:
for line in handle:
if line.startswith('DATABASE_URL='):
# Not every server runs as root, and 'root:' then simply is not
# there: split()[1] raised IndexError, which read as a crash
# rather than the clear message two lines down.
if 'root:' not in line:
continue
after = line.split('root:', 1)[1]
return after.split('@', 1)[0]
raise RuntimeError('could not resolve source DB password')
class Source:
"""Read-only access to the three source databases.
The stage functions name a source by its LOGICAL name - 'shopdb_src',
'cmmc_usb_src', 'wjf_employees_src' - and this class resolves each to a
real database. That indirection is the point: the names were hardcoded at
29 call sites, so pointing the loader at a differently-named copy (the
prodscratch restore, or a site's own dump) meant editing run.py, which is
not something anybody should do to aim a loader. The logical names stay in
the stages where they read as documentation; the mapping lives here.
Everything is environment-overridable, defaulting to the scratch layout:
SOURCE_DB_MAIN default shopdb_src
SOURCE_DB_USB default cmmc_usb_src
SOURCE_DB_EMPLOYEES default wjf_employees_src
SOURCE_DB_HOST/PORT/USER/PASSWORD
"""
# logical name -> (env var, default real name)
ALIASES = {
'shopdb_src': ('SOURCE_DB_MAIN', 'shopdb_src'),
'cmmc_usb_src': ('SOURCE_DB_USB', 'cmmc_usb_src'),
'wjf_employees_src': ('SOURCE_DB_EMPLOYEES', 'wjf_employees_src'),
}
def __init__(self, host=None, port=None, user=None, password=None):
self.password = password or _source_password()
self.host = host or os.environ.get('SOURCE_DB_HOST', '127.0.0.1')
self.port = int(port or os.environ.get('SOURCE_DB_PORT', 3306))
self.user = user or os.environ.get('SOURCE_DB_USER', 'root')
self._conns = {}
@classmethod
def resolve(cls, name):
"""The real database behind a logical source name."""
env, default = cls.ALIASES.get(name, (None, name))
return os.environ.get(env, default) if env else name
def db(self, name):
real = self.resolve(name)
if real not in self._conns:
self._conns[real] = pymysql.connect(
host=self.host, port=self.port, user=self.user,
password=self.password, database=real, charset='utf8mb4',
cursorclass=pymysql.cursors.DictCursor)
return self._conns[real]
def rows(self, dbname, sql, args=None):
with self.db(dbname).cursor() as cur:
cur.execute(sql, args or ())
return cur.fetchall()
class StaleIdMapError(RuntimeError):
"""The crosswalk on disk was built against a different target database."""
class IdMap:
"""Persisted legacy-id -> new-id crosswalks, one namespace per entity.
BOUND TO ONE TARGET DATABASE. The crosswalk holds this site's legacy ids
mapped to assetids in a specific database, and those assetids mean nothing
anywhere else. Two ways that used to go wrong, both silent:
- Delete idmap.json and re-run: every create 409s, nothing resolves into
the crosswalk, and warranties, installs, relationships and printer
assignments all quietly import as ~0 rows.
- Keep idmap.json across a drop-and-rebuild of the target: the legacy ids
now point at assetids belonging to the OLD database, so warranties and
printer assignments attach to whatever asset happens to hold that id
now. Wrong data, no error, and the runbook's two "drop and rebuild"
steps never said to delete the file.
The bind is a marker row in the target's own settings table, so it dies
with the data: a rebuild produces a new marker, and the mismatch is caught
before a single row is written. The database NAME is not enough on its own,
because a rebuild keeps it.
"""
MARKER_KEY = 'siteimport_targetinstance'
def __init__(self, path, target=None):
self.path = path
self.target = target
self._data = {}
if os.path.exists(path):
with open(path) as handle:
self._data = json.load(handle)
self._check_target()
def _check_target(self):
if not self.target:
return
seen = self._data.get('_target')
if seen is None:
# Written before this check existed. Adopt it rather than refuse:
# refusing would strand a crosswalk that is probably fine, and the
# next run is bound properly.
self._data['_target'] = self.target
self.save()
return
if seen != self.target:
raise StaleIdMapError(
'%s was built against target %s, but this run targets %s.\n'
'Those assetids belong to a different database and using them '
'would attach imported rows to the wrong assets.\n'
'Delete the file to start a fresh crosswalk, or point '
'--idmap at the one for this target.'
% (self.path, seen, self.target))
def put(self, namespace, legacy, new):
self._data.setdefault(namespace, {})[str(legacy)] = new
self.save()
def get(self, namespace, legacy, default=None):
return self._data.get(namespace, {}).get(str(legacy), default)
def has(self, namespace, legacy):
return str(legacy) in self._data.get(namespace, {})
def count(self, namespace):
entry = self._data.get(namespace, {})
return len(entry) if isinstance(entry, dict) else 0
def save(self):
with open(self.path, 'w') as handle:
json.dump(self._data, handle, indent=1)
class Harness:
"""App + admin PAT + import-mode test client + id maps."""
def __init__(self, idmap_path=None):
self.app = create_app()
self.appcontext = self.app.app_context()
self.appcontext.push()
self._silence_sql_logging()
self.client = self.app.test_client()
self._ensure_asset_types()
self.secret = self._mint_admin_pat()
default = os.path.join(os.path.dirname(__file__), 'idmap.json')
self.ids = IdMap(idmap_path or default, target=self._target_instance())
self.source = Source()
self.errors = []
self._defaultlevelid = None
def _target_instance(self):
"""A stable id for THIS target database, created once and stored in it.
Kept in the target's own settings table so it dies when the data does.
A drop-and-rebuild yields a new id, which is what lets IdMap catch a
crosswalk carried over from the previous database - the failure that
silently attaches imported rows to whatever asset now holds that id.
The database name alone would not do: a rebuild keeps the name.
"""
from shopdb.core.models import Setting
existing = Setting.query.filter_by(key=IdMap.MARKER_KEY).first()
if existing and existing.value:
return existing.value
marker = uuid.uuid4().hex
if existing:
existing.value = marker
else:
db.session.add(Setting(
key=IdMap.MARKER_KEY, value=marker, valuetype='string',
category='import',
description='Identifies this database to the site-import '
'crosswalk. Created by the loader; do not copy it '
'between databases.'))
db.session.commit()
return marker
@property
def defaultlevelid(self):
"""The level imported map positions belong to (ADR-017).
The legacy schema predates levels: it has ONE floor plan, so every
mapleft/maptop it carries is a coordinate on this site's default level.
Importing them without a level produces markers the map refuses to draw
- it will not guess a drawing for coordinates that do not name one.
"""
if self._defaultlevelid is None:
from shopdb.core.models import MapLevel
level = MapLevel.default_level()
self._defaultlevelid = level.levelid if level else None
return self._defaultlevelid
def _silence_sql_logging(self):
import logging
logging.getLogger('sqlalchemy.engine').setLevel(logging.WARNING)
def _ensure_asset_types(self):
"""Register each plugin's AssetType + seeded subtypes. on_install (which
does this) is skipped when a DB is built with `flask plugin upgrade-all`
rather than a fresh `install`, so run it idempotently here - the create
routes 500 without the AssetType row."""
manager = self.app.extensions.get('plugin_manager')
if not manager:
return
for _name, plugin in manager.get_all_plugins().items():
try:
plugin.on_install(self.app)
except Exception:
pass
# A full import IS the setup, so mark it complete - otherwise the admin
# is bounced to the first-run wizard on every fresh import DB.
from shopdb.core.models import Setting
Setting.set('setup_complete', 'true', valuetype='boolean', category='site')
db.session.commit()
def _mint_admin_pat(self):
"""Create (or reuse) an admin user and an unscoped admin PAT. Unscoped
because import mode + role gates require full owner authority
(the IMPORT-API wiki page). Returns the clear secret."""
from werkzeug.security import generate_password_hash
from shopdb.core.models import User, Role, ApiToken
admin = User.query.join(User.roles).filter(Role.rolename == 'admin').first()
if not admin:
role = Role.query.filter_by(rolename='admin').first() \
or Role(rolename='admin', description='Administrator')
db.session.add(role)
admin = User(username='importer', email='importer@localhost',
passwordhash=generate_password_hash('x'), isactive=True)
admin.roles.append(role)
db.session.add(admin)
db.session.commit()
secret = ApiToken.generate_secret()
token = ApiToken(userid=admin.userid, name='wjf legacy import',
tokenprefix=ApiToken.prefix_of(secret),
tokenhash=ApiToken.hash_secret(secret), scopes=None)
db.session.add(token)
db.session.commit()
return secret
def _headers(self, import_mode):
# A PAT authenticates as Authorization: Bearer shopdb_pat_... (the
# before_request shim resolves it into a JWT identity). X-API-Key is for
# collector/service tokens, not personal tokens.
headers = {'Authorization': f'Bearer {self.secret}'}
if import_mode:
headers['X-Import-Mode'] = 'true'
return headers
def post(self, path, payload, import_mode=True):
"""POST to an import endpoint. Returns (status, data). 409s are returned
(idempotency handled by the caller), other 4xx/5xx are recorded."""
resp = self.client.post(path, json=payload, headers=self._headers(import_mode))
body = resp.get_json() or {}
data = body.get('data', body)
if resp.status_code >= 400 and resp.status_code != 409:
self.errors.append((path, resp.status_code, payload, data))
return resp.status_code, data
def get(self, path):
resp = self.client.get(path, headers=self._headers(False))
body = resp.get_json() or {}
return resp.status_code, body.get('data', body)
def close(self):
self.ids.save()
self.appcontext.pop()