def build_query(
self,
container: IContainer,
query: ParsedQueryInfo,
select_fields: typing.List[str],
distinct: typing.Optional[bool] = False,
) -> typing.Tuple[str, typing.List[typing.Any]]:
if query["sort_on"] is None:
# always need a sort otherwise paging never works
order_by_index = get_pg_index("uuid")
else:
order_by_index = get_pg_index(query["sort_on"]) or BasicJsonIndex(
query["sort_on"])
sql_arguments = []
sql_wheres = []
arg_index = 1
for idx, select in enumerate(query["selects"]):
select_fields.append(select.format(arg=arg_index))
sql_arguments.append(query["selects_arguments"][idx])
arg_index += 1
where_arg_index = 0
for where in query["wheres"]:
if isinstance(where, tuple):
operator, sub_wheres = where
sub_result = []
for sub_where in sub_wheres:
sub_result.append(
sub_where.format(arg=arg_index + where_arg_index))
sql_arguments.append(
query["wheres_arguments"][where_arg_index])
where_arg_index += 1
sql_wheres.append("(" + operator.join(sub_result) + ")")
else:
sql_wheres.append(where.format(arg=arg_index +
where_arg_index))
sql_arguments.append(
query["wheres_arguments"][where_arg_index])
where_arg_index += 1
txn = get_transaction()
if txn is None:
raise TransactionNotFound()
sql_wheres.extend(self.get_default_where_clauses(container))
sql = """select {} {}
from {}
where {}
{}
limit {} offset {}""".format(
"distinct" if distinct else "",
",".join(select_fields),
sqlq(txn.storage.objects_table_name),
" AND ".join(sql_wheres),
"" if distinct else order_by_index.order_by(query["sort_dir"]),
sqlq(query["size"]),
sqlq(query["_from"]),
)
return sql, sql_arguments
async def aggregation(self, container: IContainer, query: ParsedQueryInfo):
select_fields = [
"json->'" + sqlq(field) + "' as " + sqlq(field)
for field in query["metadata"] or []
] # noqa
sql, arguments = self.build_query(container, query, select_fields,
True)
txn = get_transaction()
if txn is None:
raise TransactionNotFound()
conn = await txn.get_connection()
results = []
logger.debug(f"Running search:\n{sql}\n{arguments}")
async with txn.lock:
records = await conn.fetch(sql, *arguments)
for record in records:
results.append([
json.loads(record[field]) for field in query["metadata"] or []
])
total = len(results)
if total >= query["size"] or query["_from"] != 0:
sql, arguments = self.build_count_query(container, query)
logger.debug(f"Running search:\n{sql}\n{arguments}")
async with txn.lock:
records = await conn.fetch(sql, *arguments)
total = records[0]["count"]
return {"items": results, "items_total": total}
def build_count_query(
self,
context,
query: ParsedQueryInfo,
unrestricted: bool = False,
) -> typing.Tuple[str, typing.List[typing.Any]]:
sql_arguments = []
sql_wheres = []
select_fields = ["count(*)"]
arg_index = 1
for idx, where in enumerate(query["wheres"]):
sql_wheres.append(where.format(arg=arg_index))
sql_arguments.append(query["wheres_arguments"][idx])
arg_index += 1
sql_wheres.extend(
self.get_default_where_clauses(context, unrestricted=unrestricted))
txn = get_transaction()
if txn is None:
raise TransactionNotFound()
sql = """select {}
from {}
where {}""".format(",".join(select_fields),
sqlq(txn.storage.objects_table_name),
" AND ".join(sql_wheres))
return sql, sql_arguments
async def search(self, container: IContainer,
query: ParsedQueryInfo): # type: ignore
sql, arguments = self.build_query(container, query,
['id', 'zoid', 'json'])
txn = get_transaction()
if txn is None:
raise TransactionNotFound()
conn = await txn.get_connection()
results = []
try:
context_url = get_object_url(container)
except RequestNotFound:
context_url = get_content_path(container)
logger.debug(f'Running search:\n{sql}\n{arguments}')
for record in await conn.fetch(sql, *arguments):
data = json.loads(record['json'])
result = self.load_meatdata(query, data)
result['@name'] = record['id']
result['@uid'] = record['zoid']
result['@id'] = data['@absolute_url'] = context_url + data['path']
results.append(result)
# also do count...
total = len(results)
if total >= query['size'] or query['_from'] != 0:
sql, arguments = self.build_count_query(container, query)
logger.debug(f'Running search:\n{sql}\n{arguments}')
records = await conn.fetch(sql, *arguments)
total = records[0]['count']
return {'member': results, 'items_count': total}
def _get_transaction(self) -> ITransaction:
txn = get_transaction()
if txn is not None:
return txn
if self.__txn__ is not None:
return self.__txn__
raise TransactionNotFound()
async def aggregation(self, container: IContainer, query: ParsedQueryInfo):
select_fields = [
'json->\'' + sqlq(field) + '\' as ' + sqlq(field)
for field in query['metadata'] or []
] # noqa
sql, arguments = self.build_query(container, query, select_fields,
True)
txn = get_transaction()
if txn is None:
raise TransactionNotFound()
conn = await txn.get_connection()
results = []
logger.debug(f'Running search:\n{sql}\n{arguments}')
for record in await conn.fetch(sql, *arguments):
results.append([
json.loads(record[field]) for field in query['metadata'] or []
])
total = len(results)
if total >= query['size'] or query['_from'] != 0:
sql, arguments = self.build_count_query(container, query)
logger.debug(f'Running search:\n{sql}\n{arguments}')
records = await conn.fetch(sql, *arguments)
total = records[0]['count']
return {'member': results, 'items_count': total}
def add_job_after_commit(self, func: typing.Callable[[], typing.Coroutine], args=None, kwargs=None):
txn = get_transaction()
if txn is not None:
txn.add_after_commit_hook(
self._add_job_after_commit, args=[func], kws={"args": args, "kwargs": kwargs}
)
else:
raise TransactionNotFound("Could not find transaction to run job with")
def build_query(
self,
container: IContainer,
query: ParsedQueryInfo,
select_fields: typing.List[str],
distinct: typing.Optional[bool] = False
) -> typing.Tuple[str, typing.List[typing.Any]]:
if query['sort_on'] is None:
# always need a sort otherwise paging never works
order_by_index = get_pg_index('uuid')
else:
order_by_index = get_pg_index(query['sort_on']) or BasicJsonIndex(
query['sort_on'])
sql_arguments = []
sql_wheres = []
arg_index = 1
for idx, select in enumerate(query['selects']):
select_fields.append(select.format(arg=arg_index))
sql_arguments.append(query['selects_arguments'][idx])
arg_index += 1
where_arg_index = 0
for where in query['wheres']:
if isinstance(where, tuple):
operator, sub_wheres = where
sub_result = []
for sub_where in sub_wheres:
sub_result.append(
sub_where.format(arg=arg_index + where_arg_index))
sql_arguments.append(
query['wheres_arguments'][where_arg_index])
where_arg_index += 1
sql_wheres.append('(' + operator.join(sub_result) + ')')
else:
sql_wheres.append(where.format(arg=arg_index +
where_arg_index))
sql_arguments.append(
query['wheres_arguments'][where_arg_index])
where_arg_index += 1
txn = get_transaction()
if txn is None:
raise TransactionNotFound()
sql_wheres.extend(self.get_default_where_clauses(container))
sql = '''select {} {}
from {}
where {}
{}
limit {} offset {}'''.format(
'distinct' if distinct else '', ','.join(select_fields),
sqlq(txn.storage.objects_table_name), ' AND '.join(sql_wheres),
'' if distinct else order_by_index.order_by(query['sort_dir']),
sqlq(query['size']), sqlq(query['_from']))
return sql, sql_arguments
def register(self, prefer_local=False):
if not prefer_local:
txn = get_transaction()
if txn is not None:
txn.register(self)
return
if self.__txn__ is not None:
self.__txn__.register(self)
return
raise TransactionNotFound()
def get_current_transaction() -> ITransaction:
"""
Return the current request by heuristically looking it up from stack
"""
try:
task_context = task_vars.txn.get()
if task_context is not None:
return task_context
except (ValueError, AttributeError, RuntimeError):
pass
raise TransactionNotFound(TransactionNotFound.__doc__)
def after_commit(func: Callable, *args, **kwargs):
'''
Execute a commit to the database.
:param func: function to be queued
:param \\*args: arguments to call the func with
:param \\**kwargs: keyword arguments to call the func with
'''
kwargs.pop('_request', None) # b/w compat pop unused param
txn = get_transaction()
if txn is not None:
txn.add_after_commit_hook(func, args=args, kwargs=kwargs)
else:
raise TransactionNotFound('Could not find transaction to run job with')
def before_commit(func: Callable[..., Coroutine[Any, Any, Any]], *args,
**kwargs):
'''
Execute before a commit to the database.
:param func: function to be queued
:param _request: provide request object to prevent request lookup
:param \\*args: arguments to call the func with
:param \\**kwargs: keyword arguments to call the func with
'''
kwargs.pop('_request', None) # b/w compat pop unused param
txn = get_transaction()
if txn is not None:
txn.add_before_commit_hook(func, args=args, kwargs=kwargs)
else:
raise TransactionNotFound('Could not find transaction to run job with')
def add_job_after_commit(self,
func: typing.Callable[[], typing.Coroutine],
request=None,
args=None,
kwargs=None):
txn = get_transaction()
if txn is not None:
txn.add_after_commit_hook(self._add_job_after_commit,
args=[func],
kws={
'request': request,
'args': args,
'kwargs': kwargs
})
else:
raise TransactionNotFound(
'Could not find transaction to run job with')
async def get_user(self,
token: typing.Dict) -> typing.Optional[IPrincipal]:
try:
container = get_current_container()
users = await container.async_get("users")
except (AttributeError, KeyError, ContainerNotFound):
return None
catalog = query_utility(ICatalogUtility)
if not isinstance(catalog, PGSearchUtility):
raise NoCatalogException()
txn = get_transaction()
if txn is None:
raise TransactionNotFound()
conn = await txn.get_connection()
# The catalog doesn't work because we are still
# not authenticated
sql = f"""
SELECT id FROM
{txn.storage.objects_table_name}
WHERE
json->>'type_name' = 'User'
AND parent_id != 'DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD'
AND json->>'container_id' = $1::varchar
AND lower(json->>'user_email') = lower($2::varchar)
"""
async with txn.lock:
row = await conn.fetchrow(sql, container.id, token.get("id"))
if not row:
return None
user = await users.async_get(row["id"])
if user.disabled:
# User is disabled
return None
# Load groups into cache
for ident in user.groups:
try:
user._groups_cache[ident] = await navigate_to(
container, f"groups/{ident}")
except KeyError:
continue
return user
def build_count_query(
self, context, query: ParsedQueryInfo
) -> typing.Tuple[str, typing.List[typing.Any]]:
sql_arguments = []
sql_wheres = []
select_fields = ['count(*)']
arg_index = 1
for idx, where in enumerate(query['wheres']):
sql_wheres.append(where.format(arg=arg_index))
sql_arguments.append(query['wheres_arguments'][idx])
arg_index += 1
sql_wheres.extend(self.get_default_where_clauses(context))
txn = get_transaction()
if txn is None:
raise TransactionNotFound()
sql = '''select {}
from {}
where {}'''.format(','.join(select_fields),
sqlq(txn.storage.objects_table_name),
' AND '.join(sql_wheres))
return sql, sql_arguments
async def get_root(self, txn=None) -> IBaseObject:
if txn is None:
txn = task_vars.txn.get()
if txn is None:
raise TransactionNotFound()
return await txn.get(ROOT_ID)
