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import logging
import time
from typing import Optional
import uuid
from sqlalchemy.orm import Session
from open_webui.internal.db import Base, JSONField, get_db, get_db_context
from open_webui.models.files import (
File,
FileModel,
FileMetadataResponse,
FileModelResponse,
)
from open_webui.models.groups import Groups
from open_webui.models.users import User, UserModel, Users, UserResponse
from open_webui.models.access_grants import AccessGrantModel, AccessGrants
from pydantic import BaseModel, ConfigDict, Field
from sqlalchemy import (
BigInteger,
Column,
ForeignKey,
String,
Text,
JSON,
UniqueConstraint,
or_,
)
log = logging.getLogger(__name__)
####################
# Knowledge DB Schema
####################
class Knowledge(Base):
__tablename__ = "knowledge"
id = Column(Text, unique=True, primary_key=True)
user_id = Column(Text)
name = Column(Text)
description = Column(Text)
meta = Column(JSON, nullable=True)
created_at = Column(BigInteger)
updated_at = Column(BigInteger)
class KnowledgeModel(BaseModel):
model_config = ConfigDict(from_attributes=True)
id: str
user_id: str
name: str
description: str
meta: Optional[dict] = None
access_grants: list[AccessGrantModel] = Field(default_factory=list)
created_at: int # timestamp in epoch
updated_at: int # timestamp in epoch
class KnowledgeFile(Base):
__tablename__ = "knowledge_file"
id = Column(Text, unique=True, primary_key=True)
knowledge_id = Column(
Text, ForeignKey("knowledge.id", ondelete="CASCADE"), nullable=False
)
file_id = Column(Text, ForeignKey("file.id", ondelete="CASCADE"), nullable=False)
user_id = Column(Text, nullable=False)
created_at = Column(BigInteger, nullable=False)
updated_at = Column(BigInteger, nullable=False)
__table_args__ = (
UniqueConstraint(
"knowledge_id", "file_id", name="uq_knowledge_file_knowledge_file"
),
)
class KnowledgeFileModel(BaseModel):
id: str
knowledge_id: str
file_id: str
user_id: str
created_at: int # timestamp in epoch
updated_at: int # timestamp in epoch
model_config = ConfigDict(from_attributes=True)
####################
# Forms
####################
class KnowledgeUserModel(KnowledgeModel):
user: Optional[UserResponse] = None
class KnowledgeResponse(KnowledgeModel):
files: Optional[list[FileMetadataResponse | dict]] = None
class KnowledgeUserResponse(KnowledgeUserModel):
pass
class KnowledgeForm(BaseModel):
name: str
description: str
access_grants: Optional[list[dict]] = None
class FileUserResponse(FileModelResponse):
user: Optional[UserResponse] = None
class KnowledgeListResponse(BaseModel):
items: list[KnowledgeUserModel]
total: int
class KnowledgeFileListResponse(BaseModel):
items: list[FileUserResponse]
total: int
class KnowledgeTable:
def _get_access_grants(
self, knowledge_id: str, db: Optional[Session] = None
) -> list[AccessGrantModel]:
return AccessGrants.get_grants_by_resource("knowledge", knowledge_id, db=db)
def _to_knowledge_model(
self, knowledge: Knowledge, db: Optional[Session] = None
) -> KnowledgeModel:
knowledge_data = KnowledgeModel.model_validate(knowledge).model_dump(
exclude={"access_grants"}
)
knowledge_data["access_grants"] = self._get_access_grants(
knowledge_data["id"], db=db
)
return KnowledgeModel.model_validate(knowledge_data)
def insert_new_knowledge(
self, user_id: str, form_data: KnowledgeForm, db: Optional[Session] = None
) -> Optional[KnowledgeModel]:
with get_db_context(db) as db:
knowledge = KnowledgeModel(
**{
**form_data.model_dump(exclude={"access_grants"}),
"id": str(uuid.uuid4()),
"user_id": user_id,
"created_at": int(time.time()),
"updated_at": int(time.time()),
"access_grants": [],
}
)
try:
result = Knowledge(**knowledge.model_dump(exclude={"access_grants"}))
db.add(result)
db.commit()
db.refresh(result)
AccessGrants.set_access_grants(
"knowledge", result.id, form_data.access_grants, db=db
)
if result:
return self._to_knowledge_model(result, db=db)
else:
return None
except Exception:
return None
def get_knowledge_bases(
self, skip: int = 0, limit: int = 30, db: Optional[Session] = None
) -> list[KnowledgeUserModel]:
with get_db_context(db) as db:
all_knowledge = (
db.query(Knowledge).order_by(Knowledge.updated_at.desc()).all()
)
user_ids = list(set(knowledge.user_id for knowledge in all_knowledge))
users = Users.get_users_by_user_ids(user_ids, db=db) if user_ids else []
users_dict = {user.id: user for user in users}
knowledge_bases = []
for knowledge in all_knowledge:
user = users_dict.get(knowledge.user_id)
knowledge_bases.append(
KnowledgeUserModel.model_validate(
{
**self._to_knowledge_model(knowledge, db=db).model_dump(),
"user": user.model_dump() if user else None,
}
)
)
return knowledge_bases
def search_knowledge_bases(
self,
user_id: str,
filter: dict,
skip: int = 0,
limit: int = 30,
db: Optional[Session] = None,
) -> KnowledgeListResponse:
try:
with get_db_context(db) as db:
query = db.query(Knowledge, User).outerjoin(
User, User.id == Knowledge.user_id
)
if filter:
query_key = filter.get("query")
if query_key:
query = query.filter(
or_(
Knowledge.name.ilike(f"%{query_key}%"),
Knowledge.description.ilike(f"%{query_key}%"),
User.name.ilike(f"%{query_key}%"),
User.email.ilike(f"%{query_key}%"),
User.username.ilike(f"%{query_key}%"),
)
)
view_option = filter.get("view_option")
if view_option == "created":
query = query.filter(Knowledge.user_id == user_id)
elif view_option == "shared":
query = query.filter(Knowledge.user_id != user_id)
query = AccessGrants.has_permission_filter(
db=db,
query=query,
DocumentModel=Knowledge,
filter=filter,
resource_type="knowledge",
permission="read",
)
query = query.order_by(Knowledge.updated_at.desc(), Knowledge.id.asc())
total = query.count()
if skip:
query = query.offset(skip)
if limit:
query = query.limit(limit)
items = query.all()
knowledge_bases = []
for knowledge_base, user in items:
knowledge_bases.append(
KnowledgeUserModel.model_validate(
{
**self._to_knowledge_model(
knowledge_base, db=db
).model_dump(),
"user": (
UserModel.model_validate(user).model_dump()
if user
else None
),
}
)
)
return KnowledgeListResponse(items=knowledge_bases, total=total)
except Exception as e:
print(e)
return KnowledgeListResponse(items=[], total=0)
def search_knowledge_files(
self, filter: dict, skip: int = 0, limit: int = 30, db: Optional[Session] = None
) -> KnowledgeFileListResponse:
"""
Scalable version: search files across all knowledge bases the user has
READ access to, without loading all KBs or using large IN() lists.
"""
try:
with get_db_context(db) as db:
# Base query: join Knowledge → KnowledgeFile → File
query = (
db.query(File, User, Knowledge)
.join(KnowledgeFile, File.id == KnowledgeFile.file_id)
.join(Knowledge, KnowledgeFile.knowledge_id == Knowledge.id)
.outerjoin(User, User.id == KnowledgeFile.user_id)
)
# Apply access-control directly to the joined query
# This makes the database handle filtering, even with 10k+ KBs
query = AccessGrants.has_permission_filter(
db=db,
query=query,
DocumentModel=Knowledge,
filter=filter,
resource_type="knowledge",
permission="read",
)
# Apply filename search
if filter:
q = filter.get("query")
if q:
query = query.filter(File.filename.ilike(f"%{q}%"))
# Order by file changes
query = query.order_by(File.updated_at.desc(), File.id.asc())
# Count before pagination
total = query.count()
if skip:
query = query.offset(skip)
if limit:
query = query.limit(limit)
rows = query.all()
items = []
for file, user, knowledge in rows:
items.append(
FileUserResponse(
**FileModel.model_validate(file).model_dump(),
user=(
UserResponse(
**UserModel.model_validate(user).model_dump()
)
if user
else None
),
collection=self._to_knowledge_model(
knowledge, db=db
).model_dump(),
)
)
return KnowledgeFileListResponse(items=items, total=total)
except Exception as e:
print("search_knowledge_files error:", e)
return KnowledgeFileListResponse(items=[], total=0)
def check_access_by_user_id(
self, id, user_id, permission="write", db: Optional[Session] = None
) -> bool:
knowledge = self.get_knowledge_by_id(id, db=db)
if not knowledge:
return False
if knowledge.user_id == user_id:
return True
user_group_ids = {
group.id for group in Groups.get_groups_by_member_id(user_id, db=db)
}
return AccessGrants.has_access(
user_id=user_id,
resource_type="knowledge",
resource_id=knowledge.id,
permission=permission,
user_group_ids=user_group_ids,
db=db,
)
def get_knowledge_bases_by_user_id(
self, user_id: str, permission: str = "write", db: Optional[Session] = None
) -> list[KnowledgeUserModel]:
knowledge_bases = self.get_knowledge_bases(db=db)
user_group_ids = {
group.id for group in Groups.get_groups_by_member_id(user_id, db=db)
}
return [
knowledge_base
for knowledge_base in knowledge_bases
if knowledge_base.user_id == user_id
or AccessGrants.has_access(
user_id=user_id,
resource_type="knowledge",
resource_id=knowledge_base.id,
permission=permission,
user_group_ids=user_group_ids,
db=db,
)
]
def get_knowledge_by_id(
self, id: str, db: Optional[Session] = None
) -> Optional[KnowledgeModel]:
try:
with get_db_context(db) as db:
knowledge = db.query(Knowledge).filter_by(id=id).first()
return self._to_knowledge_model(knowledge, db=db) if knowledge else None
except Exception:
return None
def get_knowledge_by_id_and_user_id(
self, id: str, user_id: str, db: Optional[Session] = None
) -> Optional[KnowledgeModel]:
knowledge = self.get_knowledge_by_id(id, db=db)
if not knowledge:
return None
if knowledge.user_id == user_id:
return knowledge
user_group_ids = {
group.id for group in Groups.get_groups_by_member_id(user_id, db=db)
}
if AccessGrants.has_access(
user_id=user_id,
resource_type="knowledge",
resource_id=knowledge.id,
permission="write",
user_group_ids=user_group_ids,
db=db,
):
return knowledge
return None
def get_knowledges_by_file_id(
self, file_id: str, db: Optional[Session] = None
) -> list[KnowledgeModel]:
try:
with get_db_context(db) as db:
knowledges = (
db.query(Knowledge)
.join(KnowledgeFile, Knowledge.id == KnowledgeFile.knowledge_id)
.filter(KnowledgeFile.file_id == file_id)
.all()
)
return [
self._to_knowledge_model(knowledge, db=db)
for knowledge in knowledges
]
except Exception:
return []
def search_files_by_id(
self,
knowledge_id: str,
user_id: str,
filter: dict,
skip: int = 0,
limit: int = 30,
db: Optional[Session] = None,
) -> KnowledgeFileListResponse:
try:
with get_db_context(db) as db:
query = (
db.query(File, User)
.join(KnowledgeFile, File.id == KnowledgeFile.file_id)
.outerjoin(User, User.id == KnowledgeFile.user_id)
.filter(KnowledgeFile.knowledge_id == knowledge_id)
)
# Default sort: updated_at descending
primary_sort = File.updated_at.desc()
if filter:
query_key = filter.get("query")
if query_key:
query = query.filter(or_(File.filename.ilike(f"%{query_key}%")))
view_option = filter.get("view_option")
if view_option == "created":
query = query.filter(KnowledgeFile.user_id == user_id)
elif view_option == "shared":
query = query.filter(KnowledgeFile.user_id != user_id)
order_by = filter.get("order_by")
direction = filter.get("direction")
is_asc = direction == "asc"
if order_by == "name":
primary_sort = (
File.filename.asc() if is_asc else File.filename.desc()
)
elif order_by == "created_at":
primary_sort = (
File.created_at.asc() if is_asc else File.created_at.desc()
)
elif order_by == "updated_at":
primary_sort = (
File.updated_at.asc() if is_asc else File.updated_at.desc()
)
# Apply sort with secondary key for deterministic pagination
query = query.order_by(primary_sort, File.id.asc())
# Count BEFORE pagination
total = query.count()
if skip:
query = query.offset(skip)
if limit:
query = query.limit(limit)
items = query.all()
files = []
for file, user in items:
files.append(
FileUserResponse(
**FileModel.model_validate(file).model_dump(),
user=(
UserResponse(
**UserModel.model_validate(user).model_dump()
)
if user
else None
),
)
)
return KnowledgeFileListResponse(items=files, total=total)
except Exception as e:
print(e)
return KnowledgeFileListResponse(items=[], total=0)
def get_files_by_id(
self, knowledge_id: str, db: Optional[Session] = None
) -> list[FileModel]:
try:
with get_db_context(db) as db:
files = (
db.query(File)
.join(KnowledgeFile, File.id == KnowledgeFile.file_id)
.filter(KnowledgeFile.knowledge_id == knowledge_id)
.all()
)
return [FileModel.model_validate(file) for file in files]
except Exception:
return []
def get_file_metadatas_by_id(
self, knowledge_id: str, db: Optional[Session] = None
) -> list[FileMetadataResponse]:
try:
with get_db_context(db) as db:
files = self.get_files_by_id(knowledge_id, db=db)
return [FileMetadataResponse(**file.model_dump()) for file in files]
except Exception:
return []
def add_file_to_knowledge_by_id(
self,
knowledge_id: str,
file_id: str,
user_id: str,
db: Optional[Session] = None,
) -> Optional[KnowledgeFileModel]:
with get_db_context(db) as db:
knowledge_file = KnowledgeFileModel(
**{
"id": str(uuid.uuid4()),
"knowledge_id": knowledge_id,
"file_id": file_id,
"user_id": user_id,
"created_at": int(time.time()),
"updated_at": int(time.time()),
}
)
try:
result = KnowledgeFile(**knowledge_file.model_dump())
db.add(result)
db.commit()
db.refresh(result)
if result:
return KnowledgeFileModel.model_validate(result)
else:
return None
except Exception:
return None
def remove_file_from_knowledge_by_id(
self, knowledge_id: str, file_id: str, db: Optional[Session] = None
) -> bool:
try:
with get_db_context(db) as db:
db.query(KnowledgeFile).filter_by(
knowledge_id=knowledge_id, file_id=file_id
).delete()
db.commit()
return True
except Exception:
return False
def reset_knowledge_by_id(
self, id: str, db: Optional[Session] = None
) -> Optional[KnowledgeModel]:
try:
with get_db_context(db) as db:
# Delete all knowledge_file entries for this knowledge_id
db.query(KnowledgeFile).filter_by(knowledge_id=id).delete()
db.commit()
# Update the knowledge entry's updated_at timestamp
db.query(Knowledge).filter_by(id=id).update(
{
"updated_at": int(time.time()),
}
)
db.commit()
return self.get_knowledge_by_id(id=id, db=db)
except Exception as e:
log.exception(e)
return None
def update_knowledge_by_id(
self,
id: str,
form_data: KnowledgeForm,
overwrite: bool = False,
db: Optional[Session] = None,
) -> Optional[KnowledgeModel]:
try:
with get_db_context(db) as db:
knowledge = self.get_knowledge_by_id(id=id, db=db)
db.query(Knowledge).filter_by(id=id).update(
{
**form_data.model_dump(exclude={"access_grants"}),
"updated_at": int(time.time()),
}
)
db.commit()
if form_data.access_grants is not None:
AccessGrants.set_access_grants(
"knowledge", id, form_data.access_grants, db=db
)
return self.get_knowledge_by_id(id=id, db=db)
except Exception as e:
log.exception(e)
return None
def update_knowledge_data_by_id(
self, id: str, data: dict, db: Optional[Session] = None
) -> Optional[KnowledgeModel]:
try:
with get_db_context(db) as db:
knowledge = self.get_knowledge_by_id(id=id, db=db)
db.query(Knowledge).filter_by(id=id).update(
{
"data": data,
"updated_at": int(time.time()),
}
)
db.commit()
return self.get_knowledge_by_id(id=id, db=db)
except Exception as e:
log.exception(e)
return None
def delete_knowledge_by_id(self, id: str, db: Optional[Session] = None) -> bool:
try:
with get_db_context(db) as db:
AccessGrants.revoke_all_access("knowledge", id, db=db)
db.query(Knowledge).filter_by(id=id).delete()
db.commit()
return True
except Exception:
return False
def delete_all_knowledge(self, db: Optional[Session] = None) -> bool:
with get_db_context(db) as db:
try:
knowledge_ids = [row[0] for row in db.query(Knowledge.id).all()]
for knowledge_id in knowledge_ids:
AccessGrants.revoke_all_access("knowledge", knowledge_id, db=db)
db.query(Knowledge).delete()
db.commit()
return True
except Exception:
return False
Knowledges = KnowledgeTable()
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