def sample_users_articles(ssn: sa.orm.Session):
""" Create a database with sample users and articles """
# Make some users
ssn.add_all([
User(name='John',
login='******',
passwd='1',
age=18,
articles=[
Article(title='Jam'),
Article(title='Jeep'),
]),
User(name='Mark',
login='******',
passwd='2',
age=20,
articles=[
Article(title='Map'),
Article(title='Mop'),
]),
User(name='Nick',
login='******',
passwd='3',
age=25,
articles=[
Article(title='Nap'),
Article(title='Nil'),
]),
User(name='Kate', login='******', passwd='4', age=30, articles=[]),
User(name='Cary', login='******', passwd='5', age=35, articles=[]),
])
ssn.commit()
def process_triggers(session: sqlalchemy.orm.Session,
characters: List[Character],
area: models.Area):
"""
Find triggers for an area, print them, and potentially resolve them.
"""
triggers = session.query(models.Trigger).filter(
(~models.Trigger.resolved) &
(models.Trigger.area_id == area.id) &
(models.Trigger.party_lvl_min <= min(c.level for c in characters)) &
(models.Trigger.party_size >= len(characters))
).all()
events = [t.event for t in triggers]
for event in events:
print('Event: {}'.format(event.name))
print(event.description)
while 1:
try:
resolved_bool = prompt_bool('Resolved ?', True)
except MalformedBoolException:
continue
break
if resolved_bool:
for t in event.triggers:
t.resolved = True
# TODO(jalex): Does this commit the triggers attached to the events?
session.add_all(events)
session.commit()
def init_characters(session: sqlalchemy.orm.Session) -> CharacterGroups:
"""
Initialize the party's characters.
Returns: Character groups.
"""
characters = []
while 1:
name = input('Character name: ')
if not name:
break
chars = session.query(
models.Character).filter(models.Character.name == name).all()
if not chars:
try:
new_char = prompt_bool('New character?', False)
except MalformedBoolException:
continue
if not new_char:
continue
player_name = input('Player name: ')
char = models.Character(name=name, player_name=player_name)
else:
try:
idx = prompt_choices(
chars, lambda i, char: ' {} - {} ({})'.format(
i, char.name, char.player_name))
except MalformedInputException:
continue
char = chars[idx]
default_lvl = char.level or 1
try:
char.level = int(
input('Level: [{}] '.format(default_lvl)) or default_lvl)
except ValueError:
print('Supply integer level.')
continue
characters.append(char)
character_groups = init_locations(session, characters)
session.add_all(x for sl in character_groups for x in sl)
session.commit()
return character_groups
async def handle_push(connection: Connection,
session: sqlalchemy.orm.Session) -> Optional[int]:
msgs_got = 0
version: Optional[Version] = None
async for msg in connection.socket:
msgs_got += 1
msg_json = json.loads(msg)
pushmsg = PushMessage(msg_json)
# print(f"pushmsg: {msg}")
if not pushmsg.operations:
logger.warn("empty operations list in client PushMessage")
for op in pushmsg.operations:
logger.info(f"operation: {op}")
# await connection.socket.send(f"answer is:{msg}")
logger.info(f"message key={pushmsg.key}")
latest_version_id = core.get_latest_version_id(session=session)
logger.info(
f"** version on server:{latest_version_id}, version in pushmsg:{pushmsg.latest_version_id}"
)
if latest_version_id != pushmsg.latest_version_id:
exc = f"version identifier isn't the latest one; " \
f"incoming: {pushmsg.latest_version_id}, on server:{latest_version_id}"
if latest_version_id is None:
logger.warn(exc)
raise PushRejected(exc)
if pushmsg.latest_version_id is None:
logger.warn(exc)
raise PullSuggested(exc)
if pushmsg.latest_version_id < latest_version_id:
logger.warn(exc)
raise PullSuggested(exc)
raise PushRejected(exc)
if not pushmsg.islegit(session):
raise PushRejected("message isn't properly signed")
for listener in before_push:
listener(session, pushmsg)
# I) detect unique constraint conflicts and resolve them if possible
unique_conflicts = find_unique_conflicts(pushmsg, session)
conflicting_objects = set()
for uc in unique_conflicts:
obj = uc['object']
conflicting_objects.add(obj)
for key, value in zip(uc['columns'], uc['new_values']):
setattr(obj, key, value)
for obj in conflicting_objects:
make_transient(obj) # remove from session
for model in set(type(obj) for obj in conflicting_objects):
pk_name = get_pk(model)
pks = [
getattr(obj, pk_name) for obj in conflicting_objects
if type(obj) is model
]
session.query(model).filter(getattr(model, pk_name).in_(pks)). \
delete(synchronize_session=False) # remove from the database
session.add_all(conflicting_objects) # reinsert
session.flush()
# II) perform the operations
operations = [
o for o in pushmsg.operations if o.tracked_model is not None
]
post_operations: List[Tuple[Operation, SQLClass,
Optional[SQLClass]]] = []
try:
op: Operation
for op in operations:
(obj,
old_obj) = await op.perform_async(pushmsg, session,
pushmsg.node_id,
connection.socket)
if obj is not None:
# if the op has been skipped, it wont be appended for post_operation handling
post_operations.append((op, obj, old_obj))
resp = dict(type="info",
op=dict(
row_id=op.row_id,
version=op.version,
command=op.command,
content_type_id=op.content_type_id,
))
call_after_tracking_fn(session, op, obj)
await connection.socket.send(json.dumps(resp))
except OperationError as e:
logger.exception(
"Couldn't perform operation in push from node %s.",
pushmsg.node_id)
raise PushRejected("at least one operation couldn't be performed",
*e.args)
# III) insert a new version
if post_operations: # only if operations have been done -> create the new version
version = Version(created=datetime.datetime.now(),
node_id=pushmsg.node_id)
session.add(version)
# IV) insert the operations, discarding the 'order' column
accomplished_operations = [
op for (op, obj, old_obj) in post_operations
]
for op in sorted(accomplished_operations, key=attr('order')):
new_op = Operation()
for k in [k for k in properties_dict(op) if k != 'order']:
setattr(new_op, k, getattr(op, k))
session.add(new_op)
new_op.version = version
session.flush()
for op, obj, old_obj in post_operations:
op.call_after_operation_fn(session, obj, old_obj)
# from woodmaster.model.sql.model import WoodPile, Measurement
# orphans = session.query(Measurement).filter(Measurement.woodpile_id == None).all()
# print(f"orphans:{orphans}")
for listener in after_push:
listener(session, pushmsg)
# return the new version id back to the client
logger.info(f"version is: {version}")
if version:
await connection.socket.send(
json.dumps(
dict(type="result", new_version_id=version.version_id)))
return {'new_version_id': version.version_id}
else:
await connection.socket.send(
json.dumps(dict(type="result", new_version_id=None)))
logger.info("sent nothing message")
await connection.socket.close()
logger.info("push ready")
