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402cf9b0ee
Refactor services folder/module structure.
**Motivation**
While working on our services I've repeatedly encountered circular imports and a general lack of clarity regarding where to put things. The structure introduced goes a long way towards resolving those issues, setting us up for a clean structure going forward.
**Services**
Services are now in their own folder with a few files:
- `services/{service_name}/__init__.py`: init as needed, mostly empty now
- `services/{service_name}/{service_name}_base.py`: the base class for the service
- `services/{service_name}/{service_name}_{impl_type}.py`: the default concrete implementation of the service - typically one of `sqlite`, `default`, or `memory`
- `services/{service_name}/{service_name}_common.py`: any common items - models, exceptions, utilities, etc
Though it's a bit verbose to have the service name both as the folder name and the prefix for files, I found it is _extremely_ confusing to have all of the base classes just be named `base.py`. So, at the cost of some verbosity when importing things, I've included the service name in the filename.
There are some minor logic changes. For example, in `InvocationProcessor`, instead of assigning the model manager service to a variable to be used later in the file, the service is used directly via the `Invoker`.
**Shared**
Things that are used across disparate services are in `services/shared/`:
- `default_graphs.py`: previously in `services/`
- `graphs.py`: previously in `services/`
- `paginatation`: generic pagination models used in a few services
- `sqlite`: the `SqliteDatabase` class, other sqlite-specific things
27 lines
649 B
Python
27 lines
649 B
Python
# Copyright (c) 2022 Kyle Schouviller (https://github.com/kyle0654)
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from abc import ABC, abstractmethod
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from typing import Optional
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from .invocation_queue_common import InvocationQueueItem
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class InvocationQueueABC(ABC):
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"""Abstract base class for all invocation queues"""
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@abstractmethod
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def get(self) -> InvocationQueueItem:
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pass
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@abstractmethod
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def put(self, item: Optional[InvocationQueueItem]) -> None:
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pass
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@abstractmethod
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def cancel(self, graph_execution_state_id: str) -> None:
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pass
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@abstractmethod
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def is_canceled(self, graph_execution_state_id: str) -> bool:
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pass
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