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Merge branch 'dbfacade-staging-merge' into staging-unstable

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s3lph 2018-07-19 22:06:31 +02:00
commit 2a75151c2f
7 changed files with 120 additions and 54 deletions
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74
matemat/db/facade.py
View file

@ -85,15 +85,17 @@ class MatematDatabase(object):
def get_user(self, uid: int) -> User:
"""
Return a user identified by its user ID
:param uid: The user's ID
Return a user identified by its user ID.
:param uid: The user's ID.
"""
with self.db.transaction(exclusive=False) as c:
# Fetch all values to construct the user
c.execute('SELECT user_id, username, email, is_admin, is_member, balance FROM users WHERE user_id = ?',
[uid])
row = c.fetchone()
if row is None:
raise ValueError(f'No user with user ID {uid} exists.')
# Unpack the row and construct the user
user_id, username, email, is_admin, is_member, balance = row
return User(user_id, username, balance, email, is_admin, is_member)
@ -230,12 +232,23 @@ class MatematDatabase(object):
'tkhash': tkhash
})
def change_user(self, user: User) -> None:
def change_user(self, user: User, **kwargs)\
-> None:
"""
Write changes in the User object to the database.
:param user: The user object to update in the database.
Commit changes to the user in the database. If writing the requested changes succeeded, the values are updated
in the provided user object. Otherwise the user object is left untouched. The user to update is identified by
the ID field in the provided user object.
:param user: The user object to update and to identify the requested user by.
:param kwargs: The properties to change.
:raises DatabaseConsistencyError: If the user represented by the object does not exist.
"""
# Resolve the values to change
name: str = kwargs['name'] if 'name' in kwargs else user.name
email: str = kwargs['email'] if 'email' in kwargs else user.email
balance: int = kwargs['balance'] if 'balance' in kwargs else user.balance
is_admin: bool = kwargs['is_admin'] if 'is_admin' in kwargs else user.is_admin
is_member: bool = kwargs['is_member'] if 'is_member' in kwargs else user.is_member
with self.db.transaction() as c:
c.execute('''
UPDATE users SET
@ -248,16 +261,22 @@ class MatematDatabase(object):
WHERE user_id = :user_id
''', {
'user_id': user.id,
'username': user.name,
'email': user.email,
'balance': user.balance,
'is_admin': user.is_admin,
'is_member': user.is_member
'username': name,
'email': email,
'balance': balance,
'is_admin': is_admin,
'is_member': is_member
})
affected = c.execute('SELECT changes()').fetchone()[0]
if affected != 1:
raise DatabaseConsistencyError(
f'change_user should affect 1 users row, but affected {affected}')
# Only update the actual user object after the changes in the database succeeded
user.name = name
user.email = email
user.balance = balance
user.is_admin = is_admin
user.is_member = is_member
def delete_user(self, user: User) -> None:
"""
@ -292,10 +311,11 @@ class MatematDatabase(object):
def get_product(self, pid: int) -> Product:
"""
Return a product identified by its product ID
:param pid: The products's ID
Return a product identified by its product ID.
:param pid: The products's ID.
"""
with self.db.transaction(exclusive=False) as c:
# Fetch all values to construct the product
c.execute('''
SELECT product_id, name, price_member, price_non_member, stock
FROM products
@ -304,6 +324,7 @@ class MatematDatabase(object):
row = c.fetchone()
if row is None:
raise ValueError(f'No product with product ID {pid} exists.')
# Unpack the row and construct the product
product_id, name, price_member, price_non_member, stock = row
return Product(product_id, name, price_member, price_non_member, stock)
@ -333,7 +354,21 @@ class MatematDatabase(object):
product_id = int(c.fetchone()[0])
return Product(product_id, name, price_member, price_non_member, 0)
def change_product(self, product: Product) -> None:
def change_product(self, product: Product, **kwargs) -> None:
"""
Commit changes to the product in the database. If writing the requested changes succeeded, the values are
updated in the provided product object. Otherwise the product object is left untouched. The product to update
is identified by the ID field in the provided product object.
:param product: The product object to update and to identify the requested product by.
:param kwargs: The properties to change.
:raises DatabaseConsistencyError: If the product represented by the object does not exist.
"""
# Resolve the values to change
name: str = kwargs['name'] if 'name' in kwargs else product.name
price_member: int = kwargs['price_member'] if 'price_member' in kwargs else product.price_member
price_non_member: int = kwargs['price_non_member'] if 'price_non_member' in kwargs else product.price_non_member
stock: int = kwargs['stock'] if 'stock' in kwargs else product.stock
with self.db.transaction() as c:
c.execute('''
UPDATE products
@ -345,15 +380,20 @@ class MatematDatabase(object):
WHERE product_id = :product_id
''', {
'product_id': product.id,
'name': product.name,
'price_member': product.price_member,
'price_non_member': product.price_non_member,
'stock': product.stock
'name': name,
'price_member': price_member,
'price_non_member': price_non_member,
'stock': stock
})
affected = c.execute('SELECT changes()').fetchone()[0]
if affected != 1:
raise DatabaseConsistencyError(
f'change_product should affect 1 products row, but affected {affected}')
# Only update the actual product object after the changes in the database succeeded
product.name = name
product.price_member = price_member
product.price_non_member = price_non_member
product.stock = stock
def delete_product(self, product: Product) -> None:
"""

24
matemat/db/test/test_facade.py
View file

@ -26,6 +26,19 @@ class DatabaseTest(unittest.TestCase):
with self.assertRaises(ValueError):
db.create_user('testuser', 'supersecurepassword2', 'testuser2@example.com')
def test_get_user(self) -> None:
with self.db as db:
with db.transaction(exclusive=False):
created = db.create_user('testuser', 'supersecurepassword', 'testuser@example.com',
admin=True, member=False)
user = db.get_user(created.id)
self.assertEqual('testuser', user.name)
self.assertEqual('testuser@example.com', user.email)
self.assertEqual(False, user.is_member)
self.assertEqual(True, user.is_admin)
with self.assertRaises(ValueError):
db.get_user(-1)
def test_list_users(self) -> None:
with self.db as db:
users = db.list_users()
@ -170,6 +183,17 @@ class DatabaseTest(unittest.TestCase):
with self.assertRaises(ValueError):
db.create_product('Club Mate', 250, 250)
def test_get_product(self) -> None:
with self.db as db:
with db.transaction(exclusive=False):
created = db.create_product('Club Mate', 150, 250)
product = db.get_product(created.id)
self.assertEqual('Club Mate', product.name)
self.assertEqual(150, product.price_member)
self.assertEqual(250, product.price_non_member)
with self.assertRaises(ValueError):
db.get_product(-1)
def test_list_products(self) -> None:
with self.db as db:
# Test empty list

16
matemat/primitives/Product.py
View file

@ -3,6 +3,10 @@ from typing import Any
class Product(object):
"""
Representation of a product offered by the Matemat, with a name, prices for users, and the number of items
currently in stock.
"""
def __init__(self,
product_id: int,
@ -10,6 +14,15 @@ class Product(object):
price_member: int,
price_non_member: int,
stock: int) -> None:
"""
Create a new product instance with the given arguments.
:param product_id: The product ID in the database.
:param name: The product's name.
:param price_member: The price of a unit of this product for users marked as "members".
:param price_non_member: The price of a unit of this product for users NOT marked as "members".
:param stock: The number of items of this product currently in stock.
"""
self._product_id: int = product_id
self._name: str = name
self._price_member: int = price_member
@ -22,7 +35,8 @@ class Product(object):
return self._product_id == other._product_id \
and self._name == other._name \
and self._price_member == other._price_member \
and self._price_non_member == other._price_non_member
and self._price_non_member == other._price_non_member \
and self._stock == other._stock
@property
def id(self) -> int:

15
matemat/primitives/User.py
View file

@ -3,6 +3,11 @@ from typing import Optional, Any
class User(object):
"""
Representation of a user registered with the Matemat, with a name, e-mail address (optional), whether the user is a
member of the organization the Matemat instance is used in, whether the user is an administrator, and the user's
account balance.
"""
def __init__(self,
user_id: int,
@ -11,6 +16,16 @@ class User(object):
email: Optional[str] = None,
admin: bool = False,
member: bool = True) -> None:
"""
Create a new user instance with the given arguments.
:param user_id: The user ID in the database.
:param username: The user's name.
:param balance: The balance of the user's account.
:param email: The user's e-mail address (optional).
:param admin: Whether the user is an administrator.
:param member: Whether the user is a member.
"""
self._user_id: int = user_id
self._username: str = username
self._email: Optional[str] = email

9
matemat/webserver/pagelets/admin.py
View file

@ -49,15 +49,10 @@ def handle_change(args: RequestArguments, user: User, db: MatematDatabase, confi
email = str(args.email)
if len(email) == 0:
email = None
oldname = user.name
oldmail = user.email
try:
user.name = username
user.email = email
db.change_user(user)
db.change_user(user, name=username, email=email)
except DatabaseConsistencyError:
user.name = oldname
user.email = oldmail
pass
elif change == 'password':
if 'oldpass' not in args or 'newpass' not in args or 'newpass2' not in args:

16
matemat/webserver/pagelets/modproduct.py
View file

@ -62,21 +62,11 @@ def handle_change(args: RequestArguments, product: Product, db: MatematDatabase,
price_member = int(str(args.pricemember))
price_non_member = int(str(args.pricenonmember))
stock = int(str(args.stock))
oldname = product.name
oldprice_member = product.price_member
oldprice_non_member = product.price_non_member
oldstock = product.stock
product.name = name
product.price_member = price_member
product.price_non_member = price_non_member
product.stock = stock
try:
db.change_product(product)
db.change_product(product,
name=name, price_member=price_member, price_non_member=price_non_member, stock=stock)
except DatabaseConsistencyError:
product.name = oldname
product.email = oldprice_member
product.is_member = oldprice_non_member
product.stock = oldstock
pass
if 'image' in args:
image = bytes(args.image)
if len(image) > 0:

20
matemat/webserver/pagelets/moduser.py
View file

@ -62,26 +62,14 @@ def handle_change(args: RequestArguments, user: User, db: MatematDatabase, confi
email = str(args.email)
password = str(args.password)
balance = int(str(args.balance))
is_member = 'ismember' in args
is_admin = 'isadmin' in args
if len(email) == 0:
email = None
oldname = user.name
oldmail = user.email
oldmember = user.is_member
oldadmin = user.is_admin
oldbalance = user.balance
user.name = username
user.email = email
user.is_member = 'ismember' in args
user.is_admin = 'isadmin' in args
user.balance = balance
try:
db.change_user(user)
db.change_user(user, name=username, email=email, is_member=is_member, is_admin=is_admin, balance=balance)
except DatabaseConsistencyError:
user.name = oldname
user.email = oldmail
user.is_member = oldmember
user.is_admin = oldadmin
user.balance = oldbalance
pass
if len(password) > 0:
db.change_password(user, '', password, verify_password=False)
if 'avatar' in args: