Move all the routers under their own dir.
This commit is contained in:
Tom Hacohen
595
etebase_fastapi/routers/collection.py
Normal file
595
etebase_fastapi/routers/collection.py
Normal file
@@ -0,0 +1,595 @@
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import typing as t
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from asgiref.sync import sync_to_async
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from django.core import exceptions as django_exceptions
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from django.core.files.base import ContentFile
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from django.db import transaction, IntegrityError
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from django.db.models import Q, QuerySet
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from fastapi import APIRouter, Depends, status, Request
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from django_etebase import models
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from myauth.models import UserType, get_typed_user_model
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from .authentication import get_authenticated_user
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from ..exceptions import HttpError, transform_validation_error, PermissionDenied, ValidationError
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from ..msgpack import MsgpackRoute
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from ..stoken_handler import filter_by_stoken_and_limit, filter_by_stoken, get_stoken_obj, get_queryset_stoken
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from ..utils import (
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get_object_or_404,
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Context,
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Prefetch,
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PrefetchQuery,
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is_collection_admin,
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BaseModel,
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permission_responses,
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PERMISSIONS_READ,
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PERMISSIONS_READWRITE,
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)
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from ..dependencies import get_collection_queryset, get_item_queryset, get_collection
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from ..sendfile import sendfile
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User = get_typed_user_model
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collection_router = APIRouter(route_class=MsgpackRoute, responses=permission_responses)
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item_router = APIRouter(route_class=MsgpackRoute, responses=permission_responses)
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class ListMulti(BaseModel):
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collectionTypes: t.List[bytes]
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ChunkType = t.Tuple[str, t.Optional[bytes]]
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class CollectionItemRevisionInOut(BaseModel):
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uid: str
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meta: bytes
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deleted: bool
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chunks: t.List[ChunkType]
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class Config:
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orm_mode = True
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@classmethod
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def from_orm_context(
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cls: t.Type["CollectionItemRevisionInOut"], obj: models.CollectionItemRevision, context: Context
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) -> "CollectionItemRevisionInOut":
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chunks: t.List[ChunkType] = []
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for chunk_relation in obj.chunks_relation.all():
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chunk_obj = chunk_relation.chunk
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if context.prefetch == "auto":
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with open(chunk_obj.chunkFile.path, "rb") as f:
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chunks.append((chunk_obj.uid, f.read()))
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else:
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chunks.append((chunk_obj.uid, None))
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return cls(uid=obj.uid, meta=bytes(obj.meta), deleted=obj.deleted, chunks=chunks)
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class CollectionItemCommon(BaseModel):
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uid: str
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version: int
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encryptionKey: t.Optional[bytes]
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content: CollectionItemRevisionInOut
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class CollectionItemOut(CollectionItemCommon):
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class Config:
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orm_mode = True
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@classmethod
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def from_orm_context(
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cls: t.Type["CollectionItemOut"], obj: models.CollectionItem, context: Context
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) -> "CollectionItemOut":
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return cls(
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uid=obj.uid,
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version=obj.version,
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encryptionKey=obj.encryptionKey,
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content=CollectionItemRevisionInOut.from_orm_context(obj.content, context),
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)
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class CollectionItemIn(CollectionItemCommon):
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etag: t.Optional[str]
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class CollectionCommon(BaseModel):
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# FIXME: remove optional once we finish collection-type-migration
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collectionType: t.Optional[bytes]
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collectionKey: bytes
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class CollectionOut(CollectionCommon):
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accessLevel: models.AccessLevels
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stoken: str
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item: CollectionItemOut
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@classmethod
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def from_orm_context(cls: t.Type["CollectionOut"], obj: models.Collection, context: Context) -> "CollectionOut":
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member: models.CollectionMember = obj.members.get(user=context.user)
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collection_type = member.collectionType
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ret = cls(
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collectionType=collection_type and bytes(collection_type.uid),
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collectionKey=bytes(member.encryptionKey),
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accessLevel=member.accessLevel,
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stoken=obj.stoken,
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item=CollectionItemOut.from_orm_context(obj.main_item, context),
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)
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return ret
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class CollectionIn(CollectionCommon):
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item: CollectionItemIn
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class RemovedMembershipOut(BaseModel):
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uid: str
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class CollectionListResponse(BaseModel):
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data: t.List[CollectionOut]
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stoken: t.Optional[str]
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done: bool
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removedMemberships: t.Optional[t.List[RemovedMembershipOut]]
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class CollectionItemListResponse(BaseModel):
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data: t.List[CollectionItemOut]
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stoken: t.Optional[str]
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done: bool
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class CollectionItemRevisionListResponse(BaseModel):
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data: t.List[CollectionItemRevisionInOut]
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iterator: t.Optional[str]
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done: bool
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class CollectionItemBulkGetIn(BaseModel):
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uid: str
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etag: t.Optional[str]
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class ItemDepIn(BaseModel):
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uid: str
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etag: str
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def validate_db(self):
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item = models.CollectionItem.objects.get(uid=self.uid)
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etag = self.etag
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if item.etag != etag:
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raise ValidationError(
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"wrong_etag",
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"Wrong etag. Expected {} got {}".format(item.etag, etag),
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status_code=status.HTTP_409_CONFLICT,
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field=self.uid,
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)
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class ItemBatchIn(BaseModel):
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items: t.List[CollectionItemIn]
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deps: t.Optional[t.List[ItemDepIn]]
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def validate_db(self):
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if self.deps is not None:
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errors: t.List[HttpError] = []
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for dep in self.deps:
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try:
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dep.validate_db()
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except ValidationError as e:
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errors.append(e)
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if len(errors) > 0:
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raise ValidationError(
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code="dep_failed",
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detail="Dependencies failed to validate",
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errors=errors,
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status_code=status.HTTP_409_CONFLICT,
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)
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@sync_to_async
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def collection_list_common(
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queryset: QuerySet,
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user: UserType,
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stoken: t.Optional[str],
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limit: int,
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prefetch: Prefetch,
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) -> CollectionListResponse:
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result, new_stoken_obj, done = filter_by_stoken_and_limit(
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stoken, limit, queryset, models.Collection.stoken_annotation
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)
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new_stoken = new_stoken_obj and new_stoken_obj.uid
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context = Context(user, prefetch)
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data: t.List[CollectionOut] = [CollectionOut.from_orm_context(item, context) for item in result]
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ret = CollectionListResponse(data=data, stoken=new_stoken, done=done)
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stoken_obj = get_stoken_obj(stoken)
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if stoken_obj is not None:
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# FIXME: honour limit? (the limit should be combined for data and this because of stoken)
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remed_qs = models.CollectionMemberRemoved.objects.filter(user=user, stoken__id__gt=stoken_obj.id)
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if not done and new_stoken_obj is not None:
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# We only filter by the new_stoken if we are not done. This is because if we are done, the new stoken
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# can point to the most recent collection change rather than most recent removed membership.
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remed_qs = remed_qs.filter(stoken__id__lte=new_stoken_obj.id)
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remed = remed_qs.values_list("collection__uid", flat=True)
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if len(remed) > 0:
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ret.removedMemberships = [RemovedMembershipOut(uid=x) for x in remed]
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return ret
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# permissions
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def verify_collection_admin(
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collection: models.Collection = Depends(get_collection), user: UserType = Depends(get_authenticated_user)
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):
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if not is_collection_admin(collection, user):
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raise PermissionDenied("admin_access_required", "Only collection admins can perform this operation.")
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def has_write_access(
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collection: models.Collection = Depends(get_collection), user: UserType = Depends(get_authenticated_user)
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):
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member = collection.members.get(user=user)
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if member.accessLevel == models.AccessLevels.READ_ONLY:
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raise PermissionDenied("no_write_access", "You need write access to write to this collection")
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# paths
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@collection_router.post(
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"/list_multi/",
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response_model=CollectionListResponse,
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response_model_exclude_unset=True,
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dependencies=PERMISSIONS_READ,
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)
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async def list_multi(
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data: ListMulti,
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stoken: t.Optional[str] = None,
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limit: int = 50,
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queryset: QuerySet = Depends(get_collection_queryset),
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user: UserType = Depends(get_authenticated_user),
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prefetch: Prefetch = PrefetchQuery,
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):
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# FIXME: Remove the isnull part once we attach collection types to all objects ("collection-type-migration")
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queryset = queryset.filter(
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Q(members__collectionType__uid__in=data.collectionTypes) | Q(members__collectionType__isnull=True)
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)
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return await collection_list_common(queryset, user, stoken, limit, prefetch)
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@collection_router.get("/", response_model=CollectionListResponse, dependencies=PERMISSIONS_READ)
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async def collection_list(
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stoken: t.Optional[str] = None,
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limit: int = 50,
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prefetch: Prefetch = PrefetchQuery,
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user: UserType = Depends(get_authenticated_user),
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queryset: QuerySet = Depends(get_collection_queryset),
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):
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return await collection_list_common(queryset, user, stoken, limit, prefetch)
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def process_revisions_for_item(item: models.CollectionItem, revision_data: CollectionItemRevisionInOut):
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chunks_objs = []
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revision = models.CollectionItemRevision(**revision_data.dict(exclude={"chunks"}), item=item)
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revision.validate_unique() # Verify there aren't any validation issues
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for chunk in revision_data.chunks:
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uid = chunk[0]
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chunk_obj = models.CollectionItemChunk.objects.filter(uid=uid).first()
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content = chunk[1] if len(chunk) > 1 else None
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# If the chunk already exists we assume it's fine. Otherwise, we upload it.
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if chunk_obj is None:
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if content is not None:
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chunk_obj = models.CollectionItemChunk(uid=uid, collection=item.collection)
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chunk_obj.chunkFile.save("IGNORED", ContentFile(content))
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chunk_obj.save()
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else:
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raise ValidationError("chunk_no_content", "Tried to create a new chunk without content")
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chunks_objs.append(chunk_obj)
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stoken = models.Stoken.objects.create()
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revision.stoken = stoken
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revision.save()
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for chunk in chunks_objs:
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models.RevisionChunkRelation.objects.create(chunk=chunk, revision=revision)
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return revision
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def _create(data: CollectionIn, user: UserType):
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with transaction.atomic():
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if data.item.etag is not None:
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raise ValidationError("bad_etag", "etag is not null")
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instance = models.Collection(uid=data.item.uid, owner=user)
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try:
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instance.validate_unique()
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except django_exceptions.ValidationError:
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raise ValidationError(
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"unique_uid", "Collection with this uid already exists", status_code=status.HTTP_409_CONFLICT
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)
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instance.save()
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main_item = models.CollectionItem.objects.create(
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uid=data.item.uid, version=data.item.version, collection=instance
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)
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instance.main_item = main_item
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instance.save()
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# TODO
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process_revisions_for_item(main_item, data.item.content)
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collection_type_obj, _ = models.CollectionType.objects.get_or_create(uid=data.collectionType, owner=user)
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models.CollectionMember(
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collection=instance,
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stoken=models.Stoken.objects.create(),
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user=user,
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accessLevel=models.AccessLevels.ADMIN,
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encryptionKey=data.collectionKey,
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collectionType=collection_type_obj,
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).save()
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@collection_router.post("/", status_code=status.HTTP_201_CREATED, dependencies=PERMISSIONS_READWRITE)
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async def create(data: CollectionIn, user: UserType = Depends(get_authenticated_user)):
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await sync_to_async(_create)(data, user)
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@collection_router.get("/{collection_uid}/", response_model=CollectionOut, dependencies=PERMISSIONS_READ)
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def collection_get(
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obj: models.Collection = Depends(get_collection),
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user: UserType = Depends(get_authenticated_user),
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prefetch: Prefetch = PrefetchQuery,
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):
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return CollectionOut.from_orm_context(obj, Context(user, prefetch))
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def item_create(item_model: CollectionItemIn, collection: models.Collection, validate_etag: bool):
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"""Function that's called when this serializer creates an item"""
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etag = item_model.etag
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revision_data = item_model.content
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uid = item_model.uid
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Model = models.CollectionItem
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with transaction.atomic():
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instance, created = Model.objects.get_or_create(
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uid=uid, collection=collection, defaults=item_model.dict(exclude={"uid", "etag", "content"})
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)
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cur_etag = instance.etag if not created else None
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# If we are trying to update an up to date item, abort early and consider it a success
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if cur_etag == revision_data.uid:
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return instance
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if validate_etag and cur_etag != etag:
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raise ValidationError(
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"wrong_etag",
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"Wrong etag. Expected {} got {}".format(cur_etag, etag),
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status_code=status.HTTP_409_CONFLICT,
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field=uid,
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)
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if not created:
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# We don't have to use select_for_update here because the unique constraint on current guards against
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# the race condition. But it's a good idea because it'll lock and wait rather than fail.
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current_revision = instance.revisions.filter(current=True).select_for_update().first()
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current_revision.current = None
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current_revision.save()
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try:
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process_revisions_for_item(instance, revision_data)
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except django_exceptions.ValidationError as e:
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transform_validation_error("content", e)
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return instance
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@item_router.get("/item/{item_uid}/", response_model=CollectionItemOut, dependencies=PERMISSIONS_READ)
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def item_get(
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item_uid: str,
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queryset: QuerySet = Depends(get_item_queryset),
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user: UserType = Depends(get_authenticated_user),
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prefetch: Prefetch = PrefetchQuery,
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):
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obj = queryset.get(uid=item_uid)
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return CollectionItemOut.from_orm_context(obj, Context(user, prefetch))
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@sync_to_async
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def item_list_common(
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queryset: QuerySet,
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user: UserType,
|
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stoken: t.Optional[str],
|
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limit: int,
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prefetch: Prefetch,
|
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) -> CollectionItemListResponse:
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result, new_stoken_obj, done = filter_by_stoken_and_limit(
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stoken, limit, queryset, models.CollectionItem.stoken_annotation
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)
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new_stoken = new_stoken_obj and new_stoken_obj.uid
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context = Context(user, prefetch)
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data: t.List[CollectionItemOut] = [CollectionItemOut.from_orm_context(item, context) for item in result]
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return CollectionItemListResponse(data=data, stoken=new_stoken, done=done)
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|
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@item_router.get("/item/", response_model=CollectionItemListResponse, dependencies=PERMISSIONS_READ)
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async def item_list(
|
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queryset: QuerySet = Depends(get_item_queryset),
|
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stoken: t.Optional[str] = None,
|
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limit: int = 50,
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prefetch: Prefetch = PrefetchQuery,
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withCollection: bool = False,
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user: UserType = Depends(get_authenticated_user),
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):
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if not withCollection:
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queryset = queryset.filter(parent__isnull=True)
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response = await item_list_common(queryset, user, stoken, limit, prefetch)
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return response
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def item_bulk_common(data: ItemBatchIn, user: UserType, stoken: t.Optional[str], uid: str, validate_etag: bool):
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queryset = get_collection_queryset(user)
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with transaction.atomic(): # We need this for locking the collection object
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collection_object = queryset.select_for_update().get(uid=uid)
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if stoken is not None and stoken != collection_object.stoken:
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raise HttpError("stale_stoken", "Stoken is too old", status_code=status.HTTP_409_CONFLICT)
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data.validate_db()
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|
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errors: t.List[HttpError] = []
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for item in data.items:
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try:
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item_create(item, collection_object, validate_etag)
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except ValidationError as e:
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errors.append(e)
|
||||
|
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if len(errors) > 0:
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raise ValidationError(
|
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code="item_failed",
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||||
detail="Items failed to validate",
|
||||
errors=errors,
|
||||
status_code=status.HTTP_409_CONFLICT,
|
||||
)
|
||||
|
||||
|
||||
@item_router.get(
|
||||
"/item/{item_uid}/revision/", response_model=CollectionItemRevisionListResponse, dependencies=PERMISSIONS_READ
|
||||
)
|
||||
def item_revisions(
|
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item_uid: str,
|
||||
limit: int = 50,
|
||||
iterator: t.Optional[str] = None,
|
||||
prefetch: Prefetch = PrefetchQuery,
|
||||
user: UserType = Depends(get_authenticated_user),
|
||||
items: QuerySet = Depends(get_item_queryset),
|
||||
):
|
||||
item = get_object_or_404(items, uid=item_uid)
|
||||
|
||||
queryset = item.revisions.order_by("-id")
|
||||
|
||||
if iterator is not None:
|
||||
iterator_obj = get_object_or_404(queryset, uid=iterator)
|
||||
queryset = queryset.filter(id__lt=iterator_obj.id)
|
||||
|
||||
result = list(queryset[: limit + 1])
|
||||
if len(result) < limit + 1:
|
||||
done = True
|
||||
else:
|
||||
done = False
|
||||
result = result[:-1]
|
||||
|
||||
context = Context(user, prefetch)
|
||||
ret_data = [CollectionItemRevisionInOut.from_orm_context(revision, context) for revision in result]
|
||||
iterator = ret_data[-1].uid if len(result) > 0 else None
|
||||
|
||||
return CollectionItemRevisionListResponse(
|
||||
data=ret_data,
|
||||
iterator=iterator,
|
||||
done=done,
|
||||
)
|
||||
|
||||
|
||||
@item_router.post("/item/fetch_updates/", response_model=CollectionItemListResponse, dependencies=PERMISSIONS_READ)
|
||||
def fetch_updates(
|
||||
data: t.List[CollectionItemBulkGetIn],
|
||||
stoken: t.Optional[str] = None,
|
||||
prefetch: Prefetch = PrefetchQuery,
|
||||
user: UserType = Depends(get_authenticated_user),
|
||||
queryset: QuerySet = Depends(get_item_queryset),
|
||||
):
|
||||
# FIXME: make configurable?
|
||||
item_limit = 200
|
||||
|
||||
if len(data) > item_limit:
|
||||
raise HttpError("too_many_items", "Request has too many items.", status_code=status.HTTP_400_BAD_REQUEST)
|
||||
|
||||
queryset, stoken_rev = filter_by_stoken(stoken, queryset, models.CollectionItem.stoken_annotation)
|
||||
|
||||
uids, etags = zip(*[(item.uid, item.etag) for item in data])
|
||||
revs = models.CollectionItemRevision.objects.filter(uid__in=etags, current=True)
|
||||
queryset = queryset.filter(uid__in=uids).exclude(revisions__in=revs)
|
||||
|
||||
new_stoken_obj = get_queryset_stoken(queryset)
|
||||
new_stoken = new_stoken_obj and new_stoken_obj.uid
|
||||
stoken = stoken_rev and getattr(stoken_rev, "uid", None)
|
||||
new_stoken = new_stoken or stoken
|
||||
|
||||
context = Context(user, prefetch)
|
||||
return CollectionItemListResponse(
|
||||
data=[CollectionItemOut.from_orm_context(item, context) for item in queryset],
|
||||
stoken=new_stoken,
|
||||
done=True, # we always return all the items, so it's always done
|
||||
)
|
||||
|
||||
|
||||
@item_router.post("/item/transaction/", dependencies=[Depends(has_write_access), *PERMISSIONS_READWRITE])
|
||||
def item_transaction(
|
||||
collection_uid: str,
|
||||
data: ItemBatchIn,
|
||||
stoken: t.Optional[str] = None,
|
||||
user: UserType = Depends(get_authenticated_user),
|
||||
):
|
||||
return item_bulk_common(data, user, stoken, collection_uid, validate_etag=True)
|
||||
|
||||
|
||||
@item_router.post("/item/batch/", dependencies=[Depends(has_write_access), *PERMISSIONS_READWRITE])
|
||||
def item_batch(
|
||||
collection_uid: str,
|
||||
data: ItemBatchIn,
|
||||
stoken: t.Optional[str] = None,
|
||||
user: UserType = Depends(get_authenticated_user),
|
||||
):
|
||||
return item_bulk_common(data, user, stoken, collection_uid, validate_etag=False)
|
||||
|
||||
|
||||
# Chunks
|
||||
|
||||
|
||||
@sync_to_async
|
||||
def chunk_save(chunk_uid: str, collection: models.Collection, content_file: ContentFile):
|
||||
chunk_obj = models.CollectionItemChunk(uid=chunk_uid, collection=collection)
|
||||
chunk_obj.chunkFile.save("IGNORED", content_file)
|
||||
chunk_obj.save()
|
||||
return chunk_obj
|
||||
|
||||
|
||||
@item_router.put(
|
||||
"/item/{item_uid}/chunk/{chunk_uid}/",
|
||||
dependencies=[Depends(has_write_access), *PERMISSIONS_READWRITE],
|
||||
status_code=status.HTTP_201_CREATED,
|
||||
)
|
||||
async def chunk_update(
|
||||
request: Request,
|
||||
chunk_uid: str,
|
||||
collection: models.Collection = Depends(get_collection),
|
||||
):
|
||||
# IGNORED FOR NOW: col_it = get_object_or_404(col.items, uid=collection_item_uid)
|
||||
content_file = ContentFile(await request.body())
|
||||
try:
|
||||
await chunk_save(chunk_uid, collection, content_file)
|
||||
except IntegrityError:
|
||||
raise HttpError("chunk_exists", "Chunk already exists.", status_code=status.HTTP_409_CONFLICT)
|
||||
|
||||
|
||||
@item_router.get(
|
||||
"/item/{item_uid}/chunk/{chunk_uid}/download/",
|
||||
dependencies=PERMISSIONS_READ,
|
||||
)
|
||||
def chunk_download(
|
||||
chunk_uid: str,
|
||||
collection: models.Collection = Depends(get_collection),
|
||||
):
|
||||
chunk = get_object_or_404(collection.chunks, uid=chunk_uid)
|
||||
|
||||
filename = chunk.chunkFile.path
|
||||
return sendfile(filename)
|
||||
Reference in New Issue
Block a user