bitelab/bitelab/data.py

#
# Copyright (c) 2020 The FreeBSD Foundation
#
# This software1 was developed by John-Mark Gurney under sponsorship
# from the FreeBSD Foundation.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1.  Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
# 2.  Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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from typing import Optional, Union, Dict, Any
import databases
from pydantic import BaseModel, Field
from datetime import datetime
import orm
import sqlalchemy

__all__ = [ 'make_orm', 'BoardClassInfo', 'Board', 'Error' ]

class BoardClassInfo(BaseModel):
	clsname: str
	arch: str

class Board(BaseModel):
	name: str
	brdclass: str
	reserved: bool
	attrs: Dict[str, Any] = Field(default_factory=dict)

	class Config:
		orm_mode = True

class Error(BaseModel):
	error: str
	board: Optional[Board]

def _issubclass(a, b):
	try:
		return issubclass(a, b)
	except TypeError:
		return False

class DataWrapper(object):
	pass

def make_orm(database):
	metadata = sqlalchemy.MetaData()

	class BoardStatus(orm.Model):
		__tablename__ = 'boardstatus'
		__database__ = database
		__metadata__ = metadata

		board = orm.Text(primary_key=True)
		user = orm.Text(index=True)
		time_reserved = orm.DateTime(default=lambda: datetime.utcnow())

	class APIKey(orm.Model):
		__tablename__ = 'apikeys'
		__database__ = database
		__metadata__ = metadata

		user = orm.Text(index=True)
		key = orm.Text(primary_key=True)

	engine = sqlalchemy.create_engine(str(database.url))
	metadata.create_all(engine)

	r = DataWrapper()

	lcls = locals()
	for i in [ 'engine', 'metadata', ] + [ x for x in lcls if _issubclass(lcls[x], orm.Model) ]:
		setattr(r, i, lcls[i])

	return r