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import inspect
import json
import os
import pkgutil
import re
from abc import ABC, abstractmethod
from dataclasses import asdict, dataclass, field, fields
from typing import final
class AbstractField:
pass
from .text_utils import camel_to_snake_case, is_camel_case
artifactories = []
class BaseArtifact(ABC):
_class_register = {}
@classmethod
def is_artifact_dict(cls, d):
return isinstance(d, dict) and "type" in d and d["type"] in cls._class_register
@classmethod
def register_class(cls, artifact_class):
assert issubclass(artifact_class, BaseArtifact), "Artifact class must be a subclass of BaseArtifact"
assert is_camel_case(
artifact_class.__name__
), f"Artifact class name must be legal camel case, got {artifact_class.__name__}"
snake_case_key = camel_to_snake_case(artifact_class.__name__)
if snake_case_key in cls._class_register:
assert (
cls._class_register[snake_case_key] == artifact_class
), f"Artifact class name must be unique, {snake_case_key} already exists for {cls._class_register[snake_case_key]}"
cls._class_register[snake_case_key] = artifact_class
return snake_case_key
@classmethod
def is_artifact_file(cls, path):
if not os.path.exists(path) or not os.path.isfile(path):
return False
with open(path, "r") as f:
d = json.load(f)
return cls.is_artifact_dict(d)
@final
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
@final
def __init_subclass__(cls, **kwargs):
super().__init_subclass__(**kwargs)
cls = dataclass(cls)
def prepare(self):
pass
def verify(self):
pass
@final
def __post_init__(self):
self.type = self.register_class(self.__class__)
self._args_dict = asdict(self)
for field in fields(self):
# check if field.type is class and if it is subclass of BaseArtifact
if isinstance(field.type, type) and issubclass(field.type, BaseArtifact):
value = getattr(self, field.name)
if isinstance(value, str):
artifact, artifactory = fetch_artifact(value)
assert artifact is not None, f"Artifact {value} does not exist, in {artifactories}"
print(f"Artifact {value} is fetched from {artifactory}")
setattr(self, field.name, artifact)
self.prepare()
self.verify()
def to_dict(self):
return self._args_dict
def save(self, path):
with open(path, "w") as f:
json.dump(self.to_dict(), f, indent=4)
# def __getstate__(self):
# print('getstate', self.__dict__)
# return self.to_dict()
@classmethod
def _recursive_load(cls, d):
if isinstance(d, dict):
new_d = {}
for key, value in d.items():
new_d[key] = cls._recursive_load(value)
d = new_d
elif isinstance(d, list):
d = [cls._recursive_load(value) for value in d]
else:
pass
if cls.is_artifact_dict(d):
instance = cls._class_register[d.pop("type")](**d)
return instance
else:
return d
@classmethod
def from_dict(cls, d):
assert cls.is_artifact_dict(d), "Input must be a dict with type field"
return cls._recursive_load(d)
@classmethod
def load(cls, path):
with open(path, "r") as f:
d = json.load(f)
assert "type" in d, "Saved artifact must have a type field"
return cls._recursive_load(d)
# assert d['type'] in cls._class_register, f'Artifact type "{d["type"]}" is not registered'
# cls = cls._class_register[d.pop('type')]
# return cls(**d)
class Artifact(BaseArtifact):
type: str = field(init=False)
class ArtifactList(list, Artifact):
def prepare(self):
for artifact in self:
artifact.prepare()
class Artifactory(Artifact, ABC):
@abstractmethod
def __contains__(self, name: str) -> bool:
pass
@abstractmethod
def __getitem__(self, name) -> Artifact:
pass
class UnitxtArtifactNotFoundError(Exception):
def __init__(self, name, artifactories):
self.name = name
self.artifactories = artifactories
def __str__(self):
return f"Artifact {self.name} does not exist, in artifactories:{self.artifactories}"
def fetch_artifact(name):
if Artifact.is_artifact_file(name):
return Artifact.load(name), None
else:
for artifactory in artifactories:
if name in artifactory:
return artifactory[name], artifactory
raise UnitxtArtifactNotFoundError(name, artifactories)
def register_atrifactory(artifactory):
assert isinstance(artifactory, Artifactory), "Artifactory must be an instance of Artifactory"
assert hasattr(artifactory, "__contains__"), "Artifactory must have __contains__ method"
assert hasattr(artifactory, "__getitem__"), "Artifactory must have __getitem__ method"
artifactories.append(artifactory)
def register_all_artifacts(path):
for loader, module_name, is_pkg in pkgutil.walk_packages(path):
print(__name__)
if module_name == __name__:
continue
print(f"Loading {module_name}")
# Import the module
module = loader.find_module(module_name).load_module(module_name)
# Iterate over every object in the module
for name, obj in inspect.getmembers(module):
# Make sure the object is a class
if inspect.isclass(obj):
# Make sure the class is a subclass of Artifact (but not Artifact itself)
if issubclass(obj, Artifact) and obj is not Artifact:
print(obj)
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