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v0.1.0
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+1
-1
@@ -1,5 +1,5 @@
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# claude
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CLAUDE.md
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.claude/
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# python
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__pycache__/
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@@ -8,29 +8,39 @@ helpers for the common paths, with a raw escape hatch for everything else.
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`requirements.txt`:
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```
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mongo @ git+ssh://git@git.rethinkstudios.io/rethink-public/mongo.git@v0.1.0
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mongo @ git+ssh://git@git.rethinkstudios.io/rethink-public/mongo.git@v0.1.9
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```
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Direct:
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```bash
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pip install "mongo @ git+ssh://git@git.rethinkstudios.io/rethink-public/mongo.git@v0.1.0"
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pip install "mongo @ git+ssh://git@git.rethinkstudios.io/rethink-public/mongo.git@v0.1.9"
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```
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Requires `motor` and `pymongo` (pulled transitively).
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Drop the `@v0.1.9` suffix from the line above to install the latest unpinned.
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## Usage
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**Object (preferred)** — one client per process:
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```python
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from mongo import Mongo
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from mongo import MongoDB
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db = Mongo(conn_string, database) # attach as bot.db / app.db
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db = MongoDB(conn_string, database) # attach as bot.db / app.db
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await db.connect() # optional: ping to fail-early on a bad URI
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users = await db.get_documents("users", {"active": True})
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db.close() # on shutdown (sync)
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# or with guaranteed cleanup:
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async with MongoDB(conn_string, database) as db:
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await db.get_documents("users", {"active": True})
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```
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|
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The class is `MongoDB`; **`Mongo` remains a back-compat alias** (`Mongo = MongoDB`), so
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existing `Mongo(...)` call sites keep working unchanged.
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**Module proxy (back-compat)** — arm once, then call bare:
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|
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```python
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@@ -42,10 +52,26 @@ users = await mongo.get_documents("users", {"active": True})
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Both styles share one client. The proxy exists so legacy call sites keep working
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after a one-line `init()`; new code should use the object.
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## Naming consistency with the datastore trio
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mongo predates the `redis`/`psql`/`mysql` trio; this version makes it surface-consistent
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**without breaking anything** (all additive, every old name preserved):
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|
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- class is **`MongoDB`** (with `Mongo` kept as an alias)
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- **`connect()`** + **`async with`** like the trio (motor connects lazily, so `connect()`
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just pings to validate early)
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- **`exists()`** aliases `check_document_exists()`; **`delete()`** aliases
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`delete_document()` — old names still work, the trio-consistent names are now available
|
||||
|
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The one deliberate difference that remains: **mongo swallows** (see below) where the trio
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is **fail-loud**. That's intentional — flipping it would break existing consumers' branch-
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on-result control flow.
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|
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## Error contract
|
||||
|
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- **Wrapped methods** log-and-swallow exceptions and return a safe default
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(`False` / `[]` / `{}` / `0` / `None`). Branch on the result.
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(`False` / `[]` / `{}` / `0` / `None`). Branch on the result. (`connect()` is the
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exception — it raises on a bad connection so you can fail-early.)
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- **`db.collection(name)`** (or `db[name]`) returns the raw motor collection:
|
||||
full driver surface, no swallowing, **raises**. Use it for anything not wrapped
|
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(`find_one_and_*` beyond what's exposed, change streams, complex bulk ops).
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@@ -61,6 +87,9 @@ are included.
|
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- `from mongo import func` won't see the proxy (resolved at import, before `init`).
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Use `import mongo` then `mongo.func(...)`.
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- `create_collection(collection, index=...)` seeds **one** index (the param is `index`,
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renamed from `indexes` in v0.1.6). A key-spec like `[("a",1),("b",1)]` builds one
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compound index, not two — call `create_index` per index for multiples.
|
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- `find_one_and_update` returns the **after** image by default (`return_after=True`).
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- `bulk_write` takes pymongo ops the caller builds:
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```python
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@@ -71,4 +100,4 @@ are included.
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||||
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## Versioning
|
||||
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Tagged `vX.Y.Z`. Pin the tag in `requirements.txt`; bump deliberately.
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Releases are tagged `vX.Y.Z`. The install line above pins a release; drop the `@vX.Y.Z` suffix to install the latest unpinned. Pin deliberately for reproducible installs.
|
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|
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+1
-1
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
|
||||
|
||||
[project]
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name = "mongo"
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version = "0.1.0"
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version = "1.0.0"
|
||||
description = "async mongodb wrapper over motor with a raw escape hatch"
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||||
requires-python = ">=3.10"
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dependencies = [
|
||||
|
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+12
-8
@@ -1,14 +1,18 @@
|
||||
from .mongo import Mongo, init, instance
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from importlib.metadata import PackageNotFoundError, version
|
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|
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__all__ = ["Mongo", "init", "instance"]
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from .mongo import MongoDB, Mongo, init, instance
|
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|
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__all__ = ["MongoDB", "Mongo", "init", "instance"]
|
||||
|
||||
try:
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__version__ = version("mongo")
|
||||
except PackageNotFoundError:
|
||||
__version__ = "0.0.0+unknown"
|
||||
|
||||
|
||||
def __getattr__(name: str):
|
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"""proxy bare package attribute access to the default instance (PEP 562)
|
||||
|
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lets `import mongo; await mongo.get_documents(...)` work after init().
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`from mongo import func` still won't see this (resolved before init)
|
||||
"""
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||||
if not name.startswith("_") and hasattr(Mongo, name):
|
||||
"""proxy bare attribute access to the default instance (PEP 562); needs
|
||||
`import mongo`, not `from mongo import func` (resolved before init)"""
|
||||
if not name.startswith("_") and hasattr(MongoDB, name):
|
||||
return getattr(instance(), name)
|
||||
raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
|
||||
|
||||
+146
-65
@@ -1,43 +1,62 @@
|
||||
"""
|
||||
async mongodb wrapper over motor
|
||||
async mongodb wrapper over motor, with a raw escape hatch for anything not wrapped
|
||||
|
||||
object (preferred), one client per process:
|
||||
from mongo import Mongo
|
||||
bot.db = Mongo(conn_string, database)
|
||||
await bot.db.get_documents("users", {"active": True})
|
||||
bot.db.close() # on shutdown (sync)
|
||||
from mongo import MongoDB
|
||||
db = MongoDB(conn_string, database)
|
||||
await db.get_documents("users", {"active": True})
|
||||
|
||||
module proxy (back-compat), arm once then call bare:
|
||||
import mongo # not `from mongo import ...`
|
||||
mongo.init(conn_string, database)
|
||||
await mongo.get_documents("users", {"active": True})
|
||||
`Mongo` is a back-compat alias of `MongoDB`. A module-proxy path also exists
|
||||
(`mongo.init(...)` then bare `mongo.func(...)`) - see README for both usage patterns.
|
||||
|
||||
errors:
|
||||
wrapped methods log and swallow, returning a safe default
|
||||
(False / [] / {} / 0 / None). .collection(name) / db[name] return
|
||||
the raw motor collection: full driver surface, raises, nothing swallowed.
|
||||
|
||||
notes:
|
||||
- the proxy needs `import mongo`; `from mongo import func` resolves before init
|
||||
- find_one_and_update returns the after-image by default
|
||||
- bulk_write takes caller-built pymongo ops (UpdateOne/DeleteOne/...)
|
||||
errors: wrapped methods log and swallow, returning a safe default (False / [] / {} / 0 /
|
||||
None). .collection(name) / db[name] return the raw motor collection: full driver surface,
|
||||
raises, nothing swallowed. mongo SWALLOWS by design, unlike the fail-loud redis/psql/mysql
|
||||
trio - kept so existing consumers' branch-on-result control flow doesn't break.
|
||||
"""
|
||||
|
||||
import logging
|
||||
from typing import Any, List, Optional
|
||||
|
||||
from pymongo import ReturnDocument
|
||||
from motor.motor_asyncio import AsyncIOMotorClient, AsyncIOMotorCollection
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||||
from pymongo.errors import BulkWriteError
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||||
from motor.motor_asyncio import AsyncIOMotorClient, AsyncIOMotorCollection, AsyncIOMotorDatabase
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class Mongo:
|
||||
class MongoDB:
|
||||
"""async mongodb wrapper; one client per process, attach to bot as bot.db"""
|
||||
|
||||
def __init__(self, connection_string: str, database: str):
|
||||
self._client = AsyncIOMotorClient(connection_string)
|
||||
self._db = self._client[database]
|
||||
try:
|
||||
self._db = self._client[database]
|
||||
except BaseException:
|
||||
self._client.close()
|
||||
raise
|
||||
|
||||
async def connect(self) -> "MongoDB":
|
||||
"""validate the connection with a ping and return self; raises, unlike the
|
||||
swallowing wrapped methods
|
||||
|
||||
an instance is single-use: pymongo 4.x `close()` is irreversible and
|
||||
connect() doesn't rebuild the client. construct a fresh MongoDB instead of
|
||||
reusing one after close()/`async with` exit.
|
||||
"""
|
||||
await self._client.admin.command("ping")
|
||||
return self
|
||||
|
||||
async def __aenter__(self) -> "MongoDB":
|
||||
try:
|
||||
return await self.connect()
|
||||
except BaseException:
|
||||
# __aexit__ isn't called when __aenter__ raises; close here so the
|
||||
# client built in __init__ doesn't leak
|
||||
self.close()
|
||||
raise
|
||||
|
||||
async def __aexit__(self, exc_type, exc, tb) -> None:
|
||||
self.close()
|
||||
|
||||
def __getitem__(self, collection: str) -> AsyncIOMotorCollection:
|
||||
"""raw collection access via subscript: bot.db['users'].aggregate(...)"""
|
||||
@@ -48,7 +67,7 @@ class Mongo:
|
||||
return self._db[name]
|
||||
|
||||
@property
|
||||
def database(self):
|
||||
def database(self) -> AsyncIOMotorDatabase:
|
||||
"""raw motor database handle"""
|
||||
return self._db
|
||||
|
||||
@@ -62,19 +81,23 @@ class Mongo:
|
||||
return False
|
||||
|
||||
def close(self) -> None:
|
||||
"""close the client pool on shutdown (sync — motor's close() is synchronous)"""
|
||||
"""close the client pool on shutdown (sync - motor's close() is synchronous)"""
|
||||
self._client.close()
|
||||
|
||||
# -------------------------------------------------------------------------
|
||||
# collection / index management
|
||||
|
||||
async def create_collection(self, collection: str, indexes=None) -> bool:
|
||||
"""create a collection, optionally seeding an index"""
|
||||
async def create_collection(self, collection: str, index=None) -> bool:
|
||||
"""create a collection, optionally seeding ONE index
|
||||
|
||||
`index` is a single key-spec (e.g. `[("a", 1), ("b", 1)]` builds one compound
|
||||
index, not two) - call create_index per index for multiples
|
||||
"""
|
||||
try:
|
||||
await self._db.create_collection(collection)
|
||||
if indexes:
|
||||
await self._db[collection].create_index(indexes)
|
||||
log.info(f"created indexes for {collection}")
|
||||
if index:
|
||||
await self._db[collection].create_index(index)
|
||||
log.info(f"created index for {collection}")
|
||||
return True
|
||||
except Exception:
|
||||
log.exception(f"db.create_collection() for {collection}")
|
||||
@@ -130,10 +153,19 @@ class Mongo:
|
||||
async def create_documents(
|
||||
self, collection: str, documents: List[dict], ordered: bool = True
|
||||
) -> int:
|
||||
"""insert many documents, returning the inserted count"""
|
||||
"""insert many documents, returning the inserted count
|
||||
|
||||
on a partial failure (e.g. ordered=False with one duplicate key) the driver
|
||||
raises BulkWriteError AFTER inserting the rest; count comes from
|
||||
`e.details['nInserted']` so a caller retrying on a wrongly-reported 0 doesn't
|
||||
re-insert documents that already landed.
|
||||
"""
|
||||
try:
|
||||
result = await self._db[collection].insert_many(documents, ordered=ordered)
|
||||
return len(result.inserted_ids)
|
||||
except BulkWriteError as e:
|
||||
log.exception(f"db.create_documents() on {collection}")
|
||||
return e.details.get("nInserted", 0)
|
||||
except Exception:
|
||||
log.exception(f"db.create_documents() on {collection}")
|
||||
return 0
|
||||
@@ -181,7 +213,11 @@ class Mongo:
|
||||
return []
|
||||
|
||||
async def get_document_hashmap(self, collection: str, target: dict, key: str) -> dict:
|
||||
"""return matching documents keyed into a dict by the given field"""
|
||||
"""return matching documents keyed into a dict by the given field
|
||||
|
||||
documents missing `key` are skipped (not in the result); a later document
|
||||
with a duplicate key value overwrites an earlier one.
|
||||
"""
|
||||
try:
|
||||
cursor = self._db[collection].find(target)
|
||||
return {doc[key]: doc async for doc in cursor if key in doc}
|
||||
@@ -192,7 +228,11 @@ class Mongo:
|
||||
async def get_document_fields(
|
||||
self, collection: str, target: dict, key: str, fields: Optional[dict] = None
|
||||
) -> List:
|
||||
"""return a flat list of one field's value across matching documents"""
|
||||
"""return a flat list of one field's value across matching documents
|
||||
|
||||
documents missing `key` are skipped, so the list length may be smaller than
|
||||
the match count.
|
||||
"""
|
||||
try:
|
||||
cursor = self._db[collection].find(target, fields)
|
||||
return [doc[key] async for doc in cursor if key in doc]
|
||||
@@ -208,6 +248,18 @@ class Mongo:
|
||||
log.exception(f"db.count_documents() on {collection}")
|
||||
return 0
|
||||
|
||||
async def check_document_exists(self, collection: str, target: dict) -> bool:
|
||||
"""return whether at least one document in collection matches target"""
|
||||
try:
|
||||
return await self._db[collection].count_documents(target, limit=1) > 0
|
||||
except Exception:
|
||||
log.exception(f"db.check_document_exists() on {collection}")
|
||||
return False
|
||||
|
||||
async def exists(self, collection: str, target: dict) -> bool:
|
||||
"""trio-consistent alias of check_document_exists"""
|
||||
return await self.check_document_exists(collection, target)
|
||||
|
||||
async def count_value_in_array(self, collection: str, array_field: str, value: str) -> int:
|
||||
"""count documents whose array field contains value"""
|
||||
try:
|
||||
@@ -271,11 +323,11 @@ class Mongo:
|
||||
# update
|
||||
|
||||
async def update_document(
|
||||
self, collection: str, target: dict, document: dict, do_upsert: bool = False
|
||||
self, collection: str, target: dict, document: dict, upsert: bool = False
|
||||
) -> bool:
|
||||
"""replace a whole document, optionally upserting"""
|
||||
try:
|
||||
response = await self._db[collection].replace_one(target, document, upsert=do_upsert)
|
||||
response = await self._db[collection].replace_one(target, document, upsert=upsert)
|
||||
return bool(response.matched_count or response.upserted_id)
|
||||
except Exception:
|
||||
log.exception(f"db.update_document() on {collection}")
|
||||
@@ -291,10 +343,15 @@ class Mongo:
|
||||
return 0
|
||||
|
||||
async def update_document_field(self, collection: str, target: dict, updates: dict) -> bool:
|
||||
"""$set one or more fields on a single document"""
|
||||
"""$set one or more fields on a single document
|
||||
|
||||
returns True when a document matched, even if `$set` to an identical value
|
||||
leaves `modified_count=0` - uses `matched_count` so an idempotent no-op isn't
|
||||
misread as a failure.
|
||||
"""
|
||||
try:
|
||||
response = await self._db[collection].update_one(target, {"$set": updates})
|
||||
return response.modified_count > 0
|
||||
return response.matched_count > 0
|
||||
except Exception:
|
||||
log.exception(f"db.update_document_field() on {collection}")
|
||||
return False
|
||||
@@ -302,21 +359,30 @@ class Mongo:
|
||||
async def update_document_operator(
|
||||
self, collection: str, target: dict, update_query: dict
|
||||
) -> bool:
|
||||
"""apply raw update operators ($set/$inc/$unset/...) to a single document"""
|
||||
"""apply raw update operators ($set/$inc/$unset/...) to a single document
|
||||
|
||||
returns True when a document matched, even if the operators changed nothing -
|
||||
uses `matched_count` so an idempotent write isn't misread as a failure.
|
||||
"""
|
||||
try:
|
||||
response = await self._db[collection].update_one(target, update_query)
|
||||
return response.modified_count > 0
|
||||
return response.matched_count > 0
|
||||
except Exception:
|
||||
log.exception(f"db.update_document_operator() on {collection}")
|
||||
return False
|
||||
|
||||
async def upsert_document_field(self, collection: str, target: dict, updates: dict) -> bool:
|
||||
"""$set fields on a single document, creating it if absent"""
|
||||
"""$set fields on a single document, creating it if absent
|
||||
|
||||
returns True when a document matched or was upserted, even if `$set` to an
|
||||
identical value leaves `modified_count=0` - mirrors update_document_field's
|
||||
matched_count-over-modified_count contract.
|
||||
"""
|
||||
try:
|
||||
response = await self._db[collection].update_one(
|
||||
target, {"$set": updates}, upsert=True
|
||||
)
|
||||
return bool(response.modified_count or response.upserted_id)
|
||||
return bool(response.matched_count or response.upserted_id)
|
||||
except Exception:
|
||||
log.exception(f"db.upsert_document_field() on {collection}")
|
||||
return False
|
||||
@@ -335,10 +401,14 @@ class Mongo:
|
||||
async def document_push_array(
|
||||
self, collection: str, target: dict, array: str, value: Any
|
||||
) -> bool:
|
||||
"""$push a value onto an array field"""
|
||||
"""$push a value onto an array field
|
||||
|
||||
returns True when a document matched; $push always mutates, so matched_count
|
||||
and modified_count agree here in practice.
|
||||
"""
|
||||
try:
|
||||
response = await self._db[collection].update_one(target, {"$push": {array: value}})
|
||||
return response.modified_count > 0
|
||||
return response.matched_count > 0
|
||||
except Exception:
|
||||
log.exception(f"db.document_push_array() on {collection}")
|
||||
return False
|
||||
@@ -347,13 +417,16 @@ class Mongo:
|
||||
self, collection: str, target: dict, array: str, value: Any,
|
||||
field_to_set: str, set_value: Any,
|
||||
) -> bool:
|
||||
"""$push to an array and $set a field in one update"""
|
||||
"""$push to an array and $set a field in one update
|
||||
|
||||
returns True when a document matched (matched_count, not modified_count).
|
||||
"""
|
||||
try:
|
||||
response = await self._db[collection].update_one(
|
||||
target,
|
||||
{"$push": {array: value}, "$set": {field_to_set: set_value}},
|
||||
)
|
||||
return response.modified_count > 0
|
||||
return response.matched_count > 0
|
||||
except Exception:
|
||||
log.exception(f"db.document_push_and_set() on {collection}")
|
||||
return False
|
||||
@@ -361,24 +434,28 @@ class Mongo:
|
||||
async def document_pop_array(
|
||||
self, collection: str, target: dict, array: str, value: Any
|
||||
) -> bool:
|
||||
"""$pull a value from an array field"""
|
||||
"""$pull a value from an array field
|
||||
|
||||
returns True when a document matched, even if the value was absent and
|
||||
nothing was pulled - uses `matched_count`, not `modified_count`.
|
||||
"""
|
||||
try:
|
||||
response = await self._db[collection].update_one(target, {"$pull": {array: value}})
|
||||
return response.modified_count > 0
|
||||
return response.matched_count > 0
|
||||
except Exception:
|
||||
log.exception(f"db.document_pop_array() on {collection}")
|
||||
return False
|
||||
|
||||
async def find_one_and_update(
|
||||
self, collection: str, target: dict, update: dict,
|
||||
return_after: bool = True, do_upsert: bool = False, fields: Optional[dict] = None,
|
||||
return_after: bool = True, upsert: bool = False, fields: Optional[dict] = None,
|
||||
) -> Optional[dict]:
|
||||
"""atomically update one doc and return it (after-image by default)"""
|
||||
try:
|
||||
return await self._db[collection].find_one_and_update(
|
||||
target, update,
|
||||
projection=fields,
|
||||
upsert=do_upsert,
|
||||
upsert=upsert,
|
||||
return_document=ReturnDocument.AFTER if return_after else ReturnDocument.BEFORE,
|
||||
)
|
||||
except Exception:
|
||||
@@ -387,14 +464,14 @@ class Mongo:
|
||||
|
||||
async def find_one_and_replace(
|
||||
self, collection: str, target: dict, document: dict,
|
||||
return_after: bool = True, do_upsert: bool = False, fields: Optional[dict] = None,
|
||||
return_after: bool = True, upsert: bool = False, fields: Optional[dict] = None,
|
||||
) -> Optional[dict]:
|
||||
"""atomically replace one doc and return it (after-image by default)"""
|
||||
try:
|
||||
return await self._db[collection].find_one_and_replace(
|
||||
target, document,
|
||||
projection=fields,
|
||||
upsert=do_upsert,
|
||||
upsert=upsert,
|
||||
return_document=ReturnDocument.AFTER if return_after else ReturnDocument.BEFORE,
|
||||
)
|
||||
except Exception:
|
||||
@@ -423,6 +500,10 @@ class Mongo:
|
||||
log.exception(f"db.delete_document() on {collection}")
|
||||
return 0
|
||||
|
||||
async def delete(self, collection: str, target: dict) -> int:
|
||||
"""trio-consistent alias of delete_document (single-document delete)"""
|
||||
return await self.delete_document(collection, target)
|
||||
|
||||
async def delete_documents(self, collection: str, target: dict) -> int:
|
||||
"""delete all matching documents, returning deleted count"""
|
||||
try:
|
||||
@@ -436,10 +517,9 @@ class Mongo:
|
||||
# bulk / checks
|
||||
|
||||
async def bulk_write(self, collection: str, operations: list, ordered: bool = True) -> dict:
|
||||
"""
|
||||
run a batch of pymongo write ops (InsertOne/UpdateOne/DeleteOne/...)
|
||||
"""run a batch of pymongo write ops (InsertOne/UpdateOne/DeleteOne/...)
|
||||
|
||||
caller builds the ops from pymongo, e.g.:
|
||||
caller builds the ops, e.g.:
|
||||
from pymongo import UpdateOne
|
||||
ops = [UpdateOne({'_id': i}, {'$set': {...}}, upsert=True) for i in ids]
|
||||
returns a summary dict of counts, or an empty dict on failure
|
||||
@@ -460,8 +540,7 @@ class Mongo:
|
||||
async def document_check_multi(
|
||||
self, collection: str, target: dict, checks: List[str], value: str
|
||||
) -> bool:
|
||||
"""
|
||||
return whether a doc matching target has value in any of the given arrays
|
||||
"""return whether a doc matching target has value in any of the given arrays
|
||||
|
||||
target is a normal filter dict (merged into the query), not a bare _id
|
||||
"""
|
||||
@@ -476,25 +555,27 @@ class Mongo:
|
||||
return False
|
||||
|
||||
|
||||
# back-compat alias: the class was historically `Mongo`; existing `Mongo(...)` call
|
||||
# sites keep working unchanged
|
||||
Mongo = MongoDB
|
||||
|
||||
|
||||
# -----------------------------------------------------------------------------
|
||||
# backwards-compat module proxy
|
||||
# - lets legacy call sites keep using `await mongo.get_documents(...)`
|
||||
# without an object, after a one-time `mongo.init(conn, db)`
|
||||
# - works with `import mongo; mongo.func(...)` (resolved at call time)
|
||||
# - does NOT work with `from mongo import func` (resolved at import,
|
||||
# before init runs) — switch those sites to `import mongo`
|
||||
# backwards-compat module proxy: `import mongo; mongo.init(conn, db)` then
|
||||
# bare `await mongo.func(...)`. needs `import mongo` - `from mongo import func`
|
||||
# resolves at import time, before init() runs.
|
||||
|
||||
_default: Optional[Mongo] = None
|
||||
_default: Optional[MongoDB] = None
|
||||
|
||||
|
||||
def init(connection_string: str, database: str) -> Mongo:
|
||||
def init(connection_string: str, database: str) -> MongoDB:
|
||||
"""arm the module-level default instance and return it"""
|
||||
global _default
|
||||
_default = Mongo(connection_string, database)
|
||||
_default = MongoDB(connection_string, database)
|
||||
return _default
|
||||
|
||||
|
||||
def instance() -> Mongo:
|
||||
def instance() -> MongoDB:
|
||||
"""return the default instance, raising if init() has not run"""
|
||||
if _default is None:
|
||||
raise RuntimeError("mongo not initialized; call mongo.init(conn, db) first")
|
||||
|
||||
Reference in New Issue
Block a user