1382 lines
52 KiB
Python
1382 lines
52 KiB
Python
from collections import Iterable
|
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from datetime import datetime, timedelta
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from decimal import Decimal, ROUND_HALF_EVEN, ROUND_UP
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from distutils.version import StrictVersion
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from typing import Optional, Set, Union
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from uuid import uuid4
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import inflection
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import teal.db
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from boltons import urlutils
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from citext import CIText
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from flask import current_app as app, g
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from sqlalchemy import BigInteger, Boolean, CheckConstraint, Column, DateTime, Enum as DBEnum, \
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Float, ForeignKey, Integer, Interval, JSON, Numeric, SmallInteger, Unicode, event, orm
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from sqlalchemy.dialects.postgresql import UUID
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from sqlalchemy.ext.declarative import declared_attr
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from sqlalchemy.ext.orderinglist import ordering_list
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from sqlalchemy.orm import backref, relationship, validates
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from sqlalchemy.orm.events import AttributeEvents as Events
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from sqlalchemy.util import OrderedSet
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from teal.db import ArrayOfEnum, CASCADE_OWN, INHERIT_COND, IP, POLYMORPHIC_ID, \
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POLYMORPHIC_ON, StrictVersionType, URL, check_lower, check_range
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from teal.enums import Country, Currency, Subdivision
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from teal.marshmallow import ValidationError
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from teal.resource import url_for_resource
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from ereuse_devicehub.db import db
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from ereuse_devicehub.resources.agent.models import Agent
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from ereuse_devicehub.resources.device.models import Component, Computer, DataStorage, Desktop, \
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Device, Laptop, Server
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from ereuse_devicehub.resources.enums import AppearanceRange, Bios, ErasureStandards, \
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FunctionalityRange, PhysicalErasureMethod, PriceSoftware, RATE_NEGATIVE, RATE_POSITIVE, \
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RatingRange, RatingSoftware, ReceiverRole, Severity, SnapshotExpectedEvents, SnapshotSoftware, \
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TestDataStorageLength
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from ereuse_devicehub.resources.models import STR_SM_SIZE, Thing
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from ereuse_devicehub.resources.user.models import User
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class JoinedTableMixin:
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# noinspection PyMethodParameters
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@declared_attr
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def id(cls):
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return Column(UUID(as_uuid=True), ForeignKey(Event.id), primary_key=True)
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class Event(Thing):
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id = Column(UUID(as_uuid=True), primary_key=True, default=uuid4)
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type = Column(Unicode, nullable=False, index=True)
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name = Column(CIText(), default='', nullable=False)
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name.comment = """
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A name or title for the event. Used when searching for events.
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"""
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severity = Column(teal.db.IntEnum(Severity), default=Severity.Info, nullable=False)
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severity.comment = Severity.__doc__
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closed = Column(Boolean, default=True, nullable=False)
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closed.comment = """
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Whether the author has finished the event.
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After this is set to True, no modifications are allowed.
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By default events are closed when performed.
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"""
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description = Column(Unicode, default='', nullable=False)
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description.comment = """
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A comment about the event.
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"""
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start_time = Column(db.TIMESTAMP(timezone=True))
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start_time.comment = """
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When the action starts. For some actions like reservations
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the time when they are available, for others like renting
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when the renting starts.
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"""
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end_time = Column(db.TIMESTAMP(timezone=True))
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end_time.comment = """
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When the action ends. For some actions like reservations
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the time when they expire, for others like renting
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the time the end rents. For punctual actions it is the time
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they are performed; it differs with ``created`` in which
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created is the where the system received the action.
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"""
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snapshot_id = Column(UUID(as_uuid=True), ForeignKey('snapshot.id',
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use_alter=True,
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name='snapshot_events'))
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snapshot = relationship('Snapshot',
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backref=backref('events',
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lazy=True,
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cascade=CASCADE_OWN,
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collection_class=set),
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primaryjoin='Event.snapshot_id == Snapshot.id')
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author_id = Column(UUID(as_uuid=True),
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ForeignKey(User.id),
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nullable=False,
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default=lambda: g.user.id)
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# todo compute the org
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author = relationship(User,
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backref=backref('authored_events', lazy=True, collection_class=set),
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primaryjoin=author_id == User.id)
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author_id.comment = """
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The user that recorded this action in the system.
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This does not necessarily has to be the person that produced
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the action in the real world. For that purpose see
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``agent``.
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"""
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agent_id = Column(UUID(as_uuid=True),
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ForeignKey(Agent.id),
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nullable=False,
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default=lambda: g.user.individual.id)
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# todo compute the org
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agent = relationship(Agent,
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backref=backref('events_agent',
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lazy=True,
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collection_class=OrderedSet,
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order_by=lambda: Event.created),
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primaryjoin=agent_id == Agent.id)
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agent_id.comment = """
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The direct performer or driver of the action. e.g. John wrote a book.
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It can differ with the user that registered the action in the
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system, which can be in their behalf.
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"""
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components = relationship(Component,
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backref=backref('events_components',
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lazy=True,
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order_by=lambda: Event.created,
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collection_class=OrderedSet),
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secondary=lambda: EventComponent.__table__,
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order_by=lambda: Component.id,
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collection_class=OrderedSet)
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components.comment = """
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The components that are affected by the event.
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When performing events to parent devices their components are
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affected too.
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For example: an ``Allocate`` is performed to a Computer and this
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relationship is filled with the components the computer had
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at the time of the event.
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For Add and Remove though, this has another meaning: the components
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that are added or removed.
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"""
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parent_id = Column(BigInteger, ForeignKey(Computer.id), index=True)
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parent = relationship(Computer,
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backref=backref('events_parent',
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lazy=True,
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order_by=lambda: Event.created,
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collection_class=OrderedSet),
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primaryjoin=parent_id == Computer.id)
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parent_id.comment = """
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For events that are performed to components, the device parent
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at that time.
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For example: for a ``EraseBasic`` performed on a data storage, this
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would point to the computer that contained this data storage, if any.
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"""
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@property
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def elapsed(self):
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"""Returns the elapsed time with seconds precision."""
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t = self.end_time - self.start_time
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return timedelta(seconds=t.seconds)
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@property
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def url(self) -> urlutils.URL:
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"""The URL where to GET this event."""
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return urlutils.URL(url_for_resource(Event, item_id=self.id))
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@property
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def certificate(self) -> Optional[urlutils.URL]:
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return None
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# noinspection PyMethodParameters
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@declared_attr
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||
def __mapper_args__(cls):
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"""
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||
Defines inheritance.
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||
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||
From `the guide <http://docs.sqlalchemy.org/en/latest/orm/
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extensions/declarative/api.html
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#sqlalchemy.ext.declarative.declared_attr>`_
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"""
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args = {POLYMORPHIC_ID: cls.t}
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if cls.t == 'Event':
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args[POLYMORPHIC_ON] = cls.type
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# noinspection PyUnresolvedReferences
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if JoinedTableMixin in cls.mro():
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args[INHERIT_COND] = cls.id == Event.id
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return args
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@validates('end_time')
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def validate_end_time(self, _, end_time: datetime):
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if self.start_time and end_time <= self.start_time:
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raise ValidationError('The event cannot finish before it starts.')
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return end_time
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@validates('start_time')
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def validate_start_time(self, _, start_time: datetime):
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if self.end_time and start_time >= self.end_time:
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raise ValidationError('The event cannot start after it finished.')
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return start_time
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@property
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def date_str(self):
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return '{:%c}'.format(self.end_time or self.created)
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def __str__(self) -> str:
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return '{}'.format(self.severity)
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def __repr__(self):
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return '<{0.t} {0.id} {0.severity}>'.format(self)
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class EventComponent(db.Model):
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device_id = Column(BigInteger, ForeignKey(Component.id), primary_key=True)
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event_id = Column(UUID(as_uuid=True), ForeignKey(Event.id), primary_key=True)
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class JoinedWithOneDeviceMixin:
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# noinspection PyMethodParameters
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@declared_attr
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def id(cls):
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return Column(UUID(as_uuid=True), ForeignKey(EventWithOneDevice.id), primary_key=True)
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class EventWithOneDevice(JoinedTableMixin, Event):
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device_id = Column(BigInteger, ForeignKey(Device.id), nullable=False, index=True)
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device = relationship(Device,
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backref=backref('events_one',
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lazy=True,
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cascade=CASCADE_OWN,
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order_by=lambda: EventWithOneDevice.created,
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collection_class=OrderedSet),
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primaryjoin=Device.id == device_id)
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def __repr__(self) -> str:
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return '<{0.t} {0.id} {0.severity} device={0.device!r}>'.format(self)
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@declared_attr
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def __mapper_args__(cls):
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"""
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Defines inheritance.
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||
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From `the guide <http://docs.sqlalchemy.org/en/latest/orm/
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extensions/declarative/api.html
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#sqlalchemy.ext.declarative.declared_attr>`_
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"""
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args = {POLYMORPHIC_ID: cls.t}
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if cls.t == 'EventWithOneDevice':
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args[POLYMORPHIC_ON] = cls.type
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return args
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class EventWithMultipleDevices(Event):
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devices = relationship(Device,
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backref=backref('events_multiple',
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lazy=True,
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order_by=lambda: EventWithMultipleDevices.created,
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collection_class=OrderedSet),
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secondary=lambda: EventDevice.__table__,
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order_by=lambda: Device.id,
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collection_class=OrderedSet)
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def __repr__(self) -> str:
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return '<{0.t} {0.id} {0.severity} devices={0.devices!r}>'.format(self)
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class EventDevice(db.Model):
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device_id = Column(BigInteger, ForeignKey(Device.id), primary_key=True)
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event_id = Column(UUID(as_uuid=True), ForeignKey(EventWithMultipleDevices.id),
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primary_key=True)
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class Add(EventWithOneDevice):
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"""The act of adding components to a device.
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It is usually used internally from a :class:`.Snapshot`, for
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example, when adding a secondary data storage to a computer.
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"""
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class Remove(EventWithOneDevice):
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"""The act of removing components from a device.
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It is usually used internally from a :class:`.Snapshot`, for
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example, when removing a component from a broken computer.
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"""
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class Allocate(JoinedTableMixin, EventWithMultipleDevices):
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to_id = Column(UUID, ForeignKey(User.id))
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to = relationship(User, primaryjoin=User.id == to_id)
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organization = Column(CIText())
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||
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class Deallocate(JoinedTableMixin, EventWithMultipleDevices):
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from_id = Column(UUID, ForeignKey(User.id))
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from_rel = relationship(User, primaryjoin=User.id == from_id)
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organization = Column(CIText())
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||
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||
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class EraseBasic(JoinedWithOneDeviceMixin, EventWithOneDevice):
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"""An erasure attempt to a ``DataStorage``. The event contains
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information about success and nature of the erasure.
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EraseBasic is a software-based fast non-100%-secured way of
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erasing data storage, performed
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by Workbench Computer when executing the open-source
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`shred <https://en.wikipedia.org/wiki/Shred_(Unix)>`_.
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Users can generate erasure certificates from successful erasures.
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||
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Erasures are an accumulation of **erasure steps**, that are performed
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||
as separate actions, called ``StepRandom``, for an erasure step
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that has overwritten data with random bits, and ``StepZero``,
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for an erasure step that has overwritten data with zeros.
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Erasure standards define steps and methodologies to use.
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Devicehub automatically shows the standards that each erasure
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follows.
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||
"""
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||
method = 'Shred'
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"""The method or software used to destroy the data."""
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||
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||
@property
|
||
def standards(self):
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||
"""A set of standards that this erasure follows."""
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||
return ErasureStandards.from_data_storage(self)
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||
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||
@property
|
||
def certificate(self):
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||
"""The URL of this erasure certificate."""
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||
# todo will this url_for_resoure work for other resources?
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||
return urlutils.URL(url_for_resource('Document', item_id=self.id))
|
||
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||
def __str__(self) -> str:
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||
return '{} on {}.'.format(self.severity, self.date_str)
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||
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||
def __format__(self, format_spec: str) -> str:
|
||
v = ''
|
||
if 't' in format_spec:
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||
v += '{} {}'.format(self.type, self.severity)
|
||
if 't' in format_spec and 's' in format_spec:
|
||
v += '. '
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||
if 's' in format_spec:
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||
if self.standards:
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||
std = 'with standards {}'.format(self.standards)
|
||
else:
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||
std = 'no standard'
|
||
v += 'Method used: {}, {}. '.format(self.method, std)
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||
v += '{} elapsed, on {}'.format(self.elapsed, self.date_str)
|
||
return v
|
||
|
||
|
||
class EraseSectors(EraseBasic):
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||
"""A secured-way of erasing data storages, checking sector-by-sector
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||
the erasure, using `badblocks <https://en.wikipedia.org/wiki/Badblocks>`_.
|
||
"""
|
||
method = 'Badblocks'
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||
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||
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||
class ErasePhysical(EraseBasic):
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||
"""The act of physically destroying a data storage unit."""
|
||
method = Column(DBEnum(PhysicalErasureMethod))
|
||
|
||
|
||
class Step(db.Model):
|
||
erasure_id = Column(UUID(as_uuid=True), ForeignKey(EraseBasic.id), primary_key=True)
|
||
type = Column(Unicode(STR_SM_SIZE), nullable=False)
|
||
num = Column(SmallInteger, primary_key=True)
|
||
severity = Column(teal.db.IntEnum(Severity), default=Severity.Info, nullable=False)
|
||
start_time = Column(DateTime, nullable=False)
|
||
start_time.comment = Event.start_time.comment
|
||
end_time = Column(DateTime, CheckConstraint('end_time > start_time'), nullable=False)
|
||
end_time.comment = Event.end_time.comment
|
||
|
||
erasure = relationship(EraseBasic,
|
||
backref=backref('steps',
|
||
cascade=CASCADE_OWN,
|
||
order_by=num,
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||
collection_class=ordering_list('num')))
|
||
|
||
@property
|
||
def elapsed(self):
|
||
"""Returns the elapsed time with seconds precision."""
|
||
t = self.end_time - self.start_time
|
||
return timedelta(seconds=t.seconds)
|
||
|
||
# noinspection PyMethodParameters
|
||
@declared_attr
|
||
def __mapper_args__(cls):
|
||
"""
|
||
Defines inheritance.
|
||
|
||
From `the guide <http://docs.sqlalchemy.org/en/latest/orm/
|
||
extensions/declarative/api.html
|
||
#sqlalchemy.ext.declarative.declared_attr>`_
|
||
"""
|
||
args = {POLYMORPHIC_ID: cls.t}
|
||
if cls.t == 'Step':
|
||
args[POLYMORPHIC_ON] = cls.type
|
||
return args
|
||
|
||
def __format__(self, format_spec: str) -> str:
|
||
return '{} – {} {}'.format(self.severity, self.type, self.elapsed)
|
||
|
||
|
||
class StepZero(Step):
|
||
pass
|
||
|
||
|
||
class StepRandom(Step):
|
||
pass
|
||
|
||
|
||
class Snapshot(JoinedWithOneDeviceMixin, EventWithOneDevice):
|
||
"""The Snapshot sets the physical information of the device (S/N, model...)
|
||
and updates it with erasures, benchmarks, ratings, and tests; updates the
|
||
composition of its components (adding / removing them), and links tags
|
||
to the device.
|
||
|
||
When receiving a Snapshot, the DeviceHub creates, adds and removes
|
||
components to match the Snapshot. For example, if a Snapshot of a computer
|
||
contains a new component, the system searches for the component in its
|
||
database and, if not found, its creates it; finally linking it to the
|
||
computer.
|
||
|
||
A Snapshot is used with Remove to represent changes in components for
|
||
a device:
|
||
|
||
1. ``Snapshot`` creates a device if it does not exist, and the same
|
||
for its components. This is all done in one ``Snapshot``.
|
||
2. If the device exists, it updates its component composition by
|
||
*adding* and *removing* them. If,
|
||
for example, this new Snasphot doesn't have a component, it means that
|
||
this component is not present anymore in the device, thus removing it
|
||
from it. Then we have that:
|
||
|
||
- Components that are added to the device: snapshot2.components -
|
||
snapshot1.components
|
||
- Components that are removed to the device: snapshot1.components -
|
||
snapshot2.components
|
||
|
||
When adding a component, there may be the case this component existed
|
||
before and it was inside another device. In such case, DeviceHub will
|
||
perform ``Remove`` on the old parent.
|
||
|
||
**Snapshots from Workbench**
|
||
|
||
When processing a device from the Workbench, this one performs a Snapshot
|
||
and then performs more events (like testings, benchmarking...).
|
||
|
||
There are two ways of sending this information. In an async way,
|
||
this is, submitting events as soon as Workbench performs then, or
|
||
submitting only one Snapshot event with all the other events embedded.
|
||
|
||
**Asynced**
|
||
|
||
The use case, which is represented in the ``test_workbench_phases``,
|
||
is as follows:
|
||
|
||
1. In **T1**, WorkbenchServer (as the middleware from Workbench and
|
||
Devicehub) submits:
|
||
|
||
- A ``Snapshot`` event with the required information to **synchronize**
|
||
and **rate** the device. This is:
|
||
|
||
- Identification information about the device and components
|
||
(S/N, model, physical characteristics...)
|
||
- ``Tags`` in a ``tags`` property in the ``device``.
|
||
- ``Rate`` in an ``events`` property in the ``device``.
|
||
- ``Benchmarks`` in an ``events`` property in each ``component``
|
||
or ``device``.
|
||
- ``TestDataStorage`` as in ``Benchmarks``.
|
||
- An ordered set of **expected events**, defining which are the next
|
||
events that Workbench will perform to the device in ideal
|
||
conditions (device doesn't fail, no Internet drop...).
|
||
|
||
Devicehub **syncs** the device with the database and perform the
|
||
``Benchmark``, the ``TestDataStorage``, and finally the ``Rate``.
|
||
This leaves the Snapshot **open** to wait for the next events
|
||
to come.
|
||
2. Assuming that we expect all events, in **T2**, WorkbenchServer
|
||
submits a ``StressTest`` with a ``snapshot`` field containing the
|
||
ID of the Snapshot in 1, and Devicehub links the event with such
|
||
``Snapshot``.
|
||
3. In **T3**, WorkbenchServer submits the ``Erase`` with the ``Snapshot``
|
||
and ``component`` IDs from 1, linking it to them. It repeats
|
||
this for all the erased data storage devices; **T3+Tn** being
|
||
*n* the erased data storage devices.
|
||
4. WorkbenchServer does like in 3. but for the event ``Install``,
|
||
finishing in **T3+Tn+Tx**, being *x* the number of data storage
|
||
devices with an OS installed into.
|
||
5. In **T3+Tn+Tx**, when all *expected events* have been performed,
|
||
Devicehub **closes** the ``Snapshot`` from 1.
|
||
|
||
**Synced**
|
||
|
||
Optionally, Devicehub understands receiving a ``Snapshot`` with all
|
||
the events in an ``events`` property inside each affected ``component``
|
||
or ``device``.
|
||
"""
|
||
uuid = Column(UUID(as_uuid=True), unique=True)
|
||
version = Column(StrictVersionType(STR_SM_SIZE), nullable=False)
|
||
software = Column(DBEnum(SnapshotSoftware), nullable=False)
|
||
elapsed = Column(Interval)
|
||
elapsed.comment = """
|
||
For Snapshots made with Workbench, the total amount of time
|
||
it took to complete.
|
||
"""
|
||
expected_events = Column(ArrayOfEnum(DBEnum(SnapshotExpectedEvents)))
|
||
|
||
def __str__(self) -> str:
|
||
return '{}. {} version {}.'.format(self.severity, self.software, self.version)
|
||
|
||
|
||
class Install(JoinedWithOneDeviceMixin, EventWithOneDevice):
|
||
"""The action of installing an Operative System to a data
|
||
storage unit.
|
||
"""
|
||
elapsed = Column(Interval, nullable=False)
|
||
|
||
|
||
class SnapshotRequest(db.Model):
|
||
id = Column(UUID(as_uuid=True), ForeignKey(Snapshot.id), primary_key=True)
|
||
request = Column(JSON, nullable=False)
|
||
snapshot = relationship(Snapshot,
|
||
backref=backref('request',
|
||
lazy=True,
|
||
uselist=False,
|
||
cascade=CASCADE_OWN))
|
||
|
||
|
||
class Rate(JoinedWithOneDeviceMixin, EventWithOneDevice):
|
||
"""The act of grading the appearance, performance, and functionality
|
||
of a device.
|
||
|
||
There are two base **types** of ``Rate``: ``WorkbenchRate``,
|
||
``ManualRate``. ``WorkbenchRate`` can have different
|
||
**software** algorithms, and each software algorithm can have several
|
||
**versions**. So, we have 3 dimensions for ``WorkbenchRate``:
|
||
type, software, version.
|
||
|
||
Devicehub generates a rate event for each software and version. So,
|
||
if an agent fulfills a ``WorkbenchRate`` and there are 2 software
|
||
algorithms and each has two versions, Devicehub will generate 4 rates.
|
||
Devicehub understands that only one software and version are the
|
||
**official** (set in the settings of each inventory),
|
||
and it will generate an ``AggregateRating`` for only the official
|
||
versions. At the same time, ``Price`` only computes the price of
|
||
the **official** version.
|
||
|
||
There are two ways of rating a device:
|
||
|
||
1. When processing the device with Workbench and the Android App.
|
||
2. Anytime after with the Android App or website.
|
||
|
||
Refer to *processes* in the documentation to get more info with
|
||
the process.
|
||
|
||
The technical Workflow in Devicehub is as follows:
|
||
|
||
1. In **T1**, the agent performs a ``Snapshot`` by processing the device
|
||
through the Workbench. From the benchmarks and the visual and
|
||
functional ratings the agent does in the device, the system generates
|
||
many ``WorkbenchRate`` (as many as software and versions defined).
|
||
With only this information, the system generates an ``AggregateRating``,
|
||
which is the event that the user will see in the web.
|
||
2. In **T2**, the agent can optionally visually re-rate the device
|
||
using the mobile app, generating an ``AppRate``. This new
|
||
action generates a new ``AggregateRating`` with the ``AppRate``
|
||
plus the ``WorkbenchRate`` from 1.
|
||
"""
|
||
rating = Column(Float(decimal_return_scale=2), check_range('rating', *RATE_POSITIVE))
|
||
rating.comment = """The rating for the content."""
|
||
software = Column(DBEnum(RatingSoftware))
|
||
software.comment = """The algorithm used to produce this rating."""
|
||
version = Column(StrictVersionType)
|
||
version.comment = """The version of the software."""
|
||
appearance = Column(Float(decimal_return_scale=2), check_range('appearance', *RATE_NEGATIVE))
|
||
functionality = Column(Float(decimal_return_scale=2),
|
||
check_range('functionality', *RATE_NEGATIVE))
|
||
|
||
@property
|
||
def rating_range(self) -> RatingRange:
|
||
if self.rating:
|
||
return RatingRange.from_score(self.rating)
|
||
|
||
@declared_attr
|
||
def __mapper_args__(cls):
|
||
"""
|
||
Defines inheritance.
|
||
|
||
From `the guide <http://docs.sqlalchemy.org/en/latest/orm/
|
||
extensions/declarative/api.html
|
||
#sqlalchemy.ext.declarative.declared_attr>`_
|
||
"""
|
||
args = {POLYMORPHIC_ID: cls.t}
|
||
if cls.t == 'Rate':
|
||
args[POLYMORPHIC_ON] = cls.type
|
||
return args
|
||
|
||
def __str__(self) -> str:
|
||
return '{} ({} v.{})'.format(self.rating_range, self.software, self.version)
|
||
|
||
|
||
class IndividualRate(Rate):
|
||
pass
|
||
|
||
|
||
class ManualRate(IndividualRate):
|
||
id = Column(UUID(as_uuid=True), ForeignKey(Rate.id), primary_key=True)
|
||
labelling = Column(Boolean)
|
||
labelling.comment = """Sets if there are labels stuck that should
|
||
be removed.
|
||
"""
|
||
appearance_range = Column(DBEnum(AppearanceRange))
|
||
appearance_range.comment = AppearanceRange.__doc__
|
||
functionality_range = Column(DBEnum(FunctionalityRange))
|
||
functionality_range.comment = FunctionalityRange.__doc__
|
||
|
||
def __str__(self) -> str:
|
||
return super().__str__() + '. Appearance {} and functionality {}'.format(
|
||
self.appearance_range,
|
||
self.functionality_range
|
||
)
|
||
|
||
def ratings(self):
|
||
raise NotImplementedError()
|
||
|
||
|
||
class WorkbenchRate(ManualRate):
|
||
id = Column(UUID(as_uuid=True), ForeignKey(ManualRate.id), primary_key=True)
|
||
processor = Column(Float(decimal_return_scale=2), check_range('processor', *RATE_POSITIVE))
|
||
ram = Column(Float(decimal_return_scale=2), check_range('ram', *RATE_POSITIVE))
|
||
data_storage = Column(Float(decimal_return_scale=2),
|
||
check_range('data_storage', *RATE_POSITIVE))
|
||
graphic_card = Column(Float(decimal_return_scale=2),
|
||
check_range('graphic_card', *RATE_POSITIVE))
|
||
bios = Column(Float(decimal_return_scale=2),
|
||
check_range('bios', *RATE_POSITIVE))
|
||
bios_range = Column(DBEnum(Bios))
|
||
bios_range.comment = Bios.__doc__
|
||
|
||
# todo ensure for WorkbenchRate version and software are not None when inserting them
|
||
|
||
def ratings(self):
|
||
"""
|
||
Computes all the possible rates taking this rating as a model.
|
||
|
||
Returns a set of ratings, including this one, which is mutated,
|
||
and the final :class:`.AggregateRate`.
|
||
"""
|
||
from ereuse_devicehub.resources.event.rate.main import main
|
||
return main(self, **app.config.get_namespace('WORKBENCH_RATE_'))
|
||
|
||
@property
|
||
def data_storage_range(self):
|
||
if self.data_storage:
|
||
return RatingRange.from_score(self.data_storage)
|
||
|
||
@property
|
||
def ram_range(self):
|
||
if self.ram:
|
||
return RatingRange.from_score(self.ram)
|
||
|
||
@property
|
||
def processor_range(self):
|
||
if self.processor:
|
||
return RatingRange.from_score(self.processor)
|
||
|
||
@property
|
||
def graphic_card_range(self):
|
||
if self.graphic_card:
|
||
return RatingRange.from_score(self.graphic_card)
|
||
|
||
|
||
class AggregateRate(Rate):
|
||
id = Column(UUID(as_uuid=True), ForeignKey(Rate.id), primary_key=True)
|
||
manual_id = Column(UUID(as_uuid=True), ForeignKey(ManualRate.id))
|
||
manual_id.comment = """The ManualEvent used to generate this
|
||
aggregation, or None if none used.
|
||
|
||
An example of ManualEvent is using the web or the Android app
|
||
to rate a device.
|
||
"""
|
||
manual = relationship(ManualRate,
|
||
backref=backref('aggregate_rate_manual',
|
||
lazy=True,
|
||
order_by=lambda: AggregateRate.created,
|
||
collection_class=OrderedSet),
|
||
primaryjoin=manual_id == ManualRate.id)
|
||
workbench_id = Column(UUID(as_uuid=True), ForeignKey(WorkbenchRate.id))
|
||
workbench_id.comment = """The WorkbenchRate used to generate
|
||
this aggregation, or None if none used.
|
||
"""
|
||
workbench = relationship(WorkbenchRate,
|
||
backref=backref('aggregate_rate_workbench',
|
||
lazy=True,
|
||
order_by=lambda: AggregateRate.created,
|
||
collection_class=OrderedSet),
|
||
primaryjoin=workbench_id == WorkbenchRate.id)
|
||
|
||
def __init__(self, *args, **kwargs) -> None:
|
||
kwargs.setdefault('version', StrictVersion('1.0'))
|
||
super().__init__(*args, **kwargs)
|
||
|
||
# todo take value from LAST event (manual or workbench)
|
||
|
||
@property
|
||
def processor(self):
|
||
return self.workbench.processor
|
||
|
||
@property
|
||
def ram(self):
|
||
return self.workbench.ram
|
||
|
||
@property
|
||
def data_storage(self):
|
||
return self.workbench.data_storage
|
||
|
||
@property
|
||
def graphic_card(self):
|
||
return self.workbench.graphic_card
|
||
|
||
@property
|
||
def data_storage_range(self):
|
||
return self.workbench.data_storage_range
|
||
|
||
@property
|
||
def ram_range(self):
|
||
return self.workbench.ram_range
|
||
|
||
@property
|
||
def processor_range(self):
|
||
return self.workbench.processor_range
|
||
|
||
@property
|
||
def graphic_card_range(self):
|
||
return self.workbench.graphic_card_range
|
||
|
||
@property
|
||
def bios(self):
|
||
return self.workbench.bios
|
||
|
||
@property
|
||
def functionality_range(self):
|
||
return self.workbench.functionality_range
|
||
|
||
@property
|
||
def appearance_range(self):
|
||
return self.workbench.appearance_range
|
||
|
||
@property
|
||
def bios_range(self):
|
||
return self.workbench.bios_range
|
||
|
||
@property
|
||
def labelling(self):
|
||
return self.workbench.labelling
|
||
|
||
@classmethod
|
||
def from_workbench_rate(cls, rate: WorkbenchRate):
|
||
aggregate = cls()
|
||
aggregate.rating = rate.rating
|
||
aggregate.software = rate.software
|
||
aggregate.appearance = rate.appearance
|
||
aggregate.functionality = rate.functionality
|
||
aggregate.device = rate.device
|
||
aggregate.workbench = rate
|
||
return aggregate
|
||
|
||
|
||
class Price(JoinedWithOneDeviceMixin, EventWithOneDevice):
|
||
"""The act of setting a trading price for the device.
|
||
|
||
This does not imply that the device is ultimately traded for that
|
||
price. Use the :class:`.Sell` for that.
|
||
|
||
Devicehub automatically computes a price from ``AggregateRating``
|
||
events. As in a **Rate**, price can have **software** and **version**,
|
||
and there is an **official** price that is used to automatically
|
||
compute the price from an ``AggregateRating``. Only the official price
|
||
is computed from an ``AggregateRating``.
|
||
"""
|
||
SCALE = 4
|
||
ROUND = ROUND_HALF_EVEN
|
||
currency = Column(DBEnum(Currency), nullable=False)
|
||
currency.comment = """The currency of this price as for ISO 4217."""
|
||
price = Column(Numeric(precision=19, scale=SCALE), check_range('price', 0), nullable=False)
|
||
price.comment = """The value."""
|
||
software = Column(DBEnum(PriceSoftware))
|
||
software.comment = """The software used to compute this price,
|
||
if the price was computed automatically. This field is None
|
||
if the price has been manually set.
|
||
"""
|
||
version = Column(StrictVersionType)
|
||
version.comment = """The version of the software, or None."""
|
||
rating_id = Column(UUID(as_uuid=True), ForeignKey(AggregateRate.id))
|
||
rating_id.comment = """The AggregateRate used to auto-compute
|
||
this price, if it has not been set manually."""
|
||
rating = relationship(AggregateRate,
|
||
backref=backref('price',
|
||
lazy=True,
|
||
cascade=CASCADE_OWN,
|
||
uselist=False),
|
||
primaryjoin=AggregateRate.id == rating_id)
|
||
|
||
def __init__(self, *args, **kwargs) -> None:
|
||
if 'price' in kwargs:
|
||
assert isinstance(kwargs['price'], Decimal), 'Price must be a Decimal'
|
||
super().__init__(currency=kwargs.pop('currency', app.config['PRICE_CURRENCY']), *args,
|
||
**kwargs)
|
||
|
||
@classmethod
|
||
def to_price(cls, value: Union[Decimal, float], rounding=ROUND) -> Decimal:
|
||
"""Returns a Decimal value with the correct scale for Price.price."""
|
||
if isinstance(value, float):
|
||
value = Decimal(value)
|
||
# equation from marshmallow.fields.Decimal
|
||
return value.quantize(Decimal((0, (1,), -cls.SCALE)), rounding=rounding)
|
||
|
||
@declared_attr
|
||
def __mapper_args__(cls):
|
||
"""
|
||
Defines inheritance.
|
||
|
||
From `the guide <http://docs.sqlalchemy.org/en/latest/orm/
|
||
extensions/declarative/api.html
|
||
#sqlalchemy.ext.declarative.declared_attr>`_
|
||
"""
|
||
args = {POLYMORPHIC_ID: cls.t}
|
||
if cls.t == 'Price':
|
||
args[POLYMORPHIC_ON] = cls.type
|
||
return args
|
||
|
||
def __str__(self) -> str:
|
||
return '{0:0.2f} {1}'.format(self.price, self.currency)
|
||
|
||
|
||
class EreusePrice(Price):
|
||
"""The act of setting a price by guessing it using the eReuse.org
|
||
algorithm.
|
||
|
||
This algorithm states that the price is the use value of the device
|
||
(represented by its last :class:`.Rate`) multiplied by a constants
|
||
value agreed by a circuit or platform.
|
||
"""
|
||
MULTIPLIER = {
|
||
Desktop: 20,
|
||
Laptop: 30
|
||
}
|
||
|
||
class Type:
|
||
def __init__(self, percentage: float, price: Decimal) -> None:
|
||
# see https://stackoverflow.com/a/29651462 for the - 0.005
|
||
self.amount = EreusePrice.to_price(price * Decimal(percentage))
|
||
self.percentage = EreusePrice.to_price(price * Decimal(percentage))
|
||
self.percentage = round(percentage - 0.005, 2)
|
||
|
||
class Service:
|
||
REFURBISHER, PLATFORM, RETAILER = 0, 1, 2
|
||
STANDARD, WARRANTY2 = 'STD', 'WR2'
|
||
SCHEMA = {
|
||
Desktop: {
|
||
RatingRange.HIGH: {
|
||
STANDARD: (0.35125, 0.204375, 0.444375),
|
||
WARRANTY2: (0.47425, 0.275875, 0.599875)
|
||
},
|
||
RatingRange.MEDIUM: {
|
||
STANDARD: (0.385, 0.2558333333, 0.3591666667),
|
||
WARRANTY2: (0.539, 0.3581666667, 0.5028333333)
|
||
},
|
||
RatingRange.LOW: {
|
||
STANDARD: (0.5025, 0.30875, 0.18875),
|
||
},
|
||
},
|
||
Laptop: {
|
||
RatingRange.HIGH: {
|
||
STANDARD: (0.3469230769, 0.195, 0.4580769231),
|
||
WARRANTY2: (0.4522307692, 0.2632307692, 0.6345384615)
|
||
},
|
||
RatingRange.MEDIUM: {
|
||
STANDARD: (0.382, 0.1735, 0.4445),
|
||
WARRANTY2: (0.5108, 0.2429, 0.6463)
|
||
},
|
||
RatingRange.LOW: {
|
||
STANDARD: (0.4528571429, 0.2264285714, 0.3207142857),
|
||
}
|
||
}
|
||
}
|
||
SCHEMA[Server] = SCHEMA[Desktop]
|
||
|
||
def __init__(self, device, rating_range, role, price: Decimal) -> None:
|
||
cls = device.__class__ if device.__class__ != Server else Desktop
|
||
rate = self.SCHEMA[cls][rating_range]
|
||
self.standard = EreusePrice.Type(rate[self.STANDARD][role], price)
|
||
if self.WARRANTY2 in rate:
|
||
self.warranty2 = EreusePrice.Type(rate[self.WARRANTY2][role], price)
|
||
|
||
def __init__(self, rating: AggregateRate, **kwargs) -> None:
|
||
if rating.rating_range == RatingRange.VERY_LOW:
|
||
raise ValueError('Cannot compute price for Range.VERY_LOW')
|
||
# We pass ROUND_UP strategy so price is always greater than what refurbisher... amounts
|
||
price = self.to_price(rating.rating * self.MULTIPLIER[rating.device.__class__], ROUND_UP)
|
||
super().__init__(rating=rating,
|
||
device=rating.device,
|
||
price=price,
|
||
software=kwargs.pop('software', app.config['PRICE_SOFTWARE']),
|
||
version=kwargs.pop('version', app.config['PRICE_VERSION']),
|
||
**kwargs)
|
||
self._compute()
|
||
|
||
@orm.reconstructor
|
||
def _compute(self):
|
||
"""
|
||
Calculates eReuse.org prices when initializing the
|
||
instance from the price and other properties.
|
||
"""
|
||
self.refurbisher = self._service(self.Service.REFURBISHER)
|
||
self.retailer = self._service(self.Service.RETAILER)
|
||
self.platform = self._service(self.Service.PLATFORM)
|
||
if hasattr(self.refurbisher, 'warranty2'):
|
||
self.warranty2 = round(self.refurbisher.warranty2.amount
|
||
+ self.retailer.warranty2.amount
|
||
+ self.platform.warranty2.amount, 2)
|
||
|
||
def _service(self, role):
|
||
return self.Service(self.device, self.rating.rating_range, role, self.price)
|
||
|
||
|
||
class Test(JoinedWithOneDeviceMixin, EventWithOneDevice):
|
||
"""The act of testing the physical condition of a device and its
|
||
components.
|
||
|
||
Testing errors and warnings are easily taken in
|
||
:attr:`ereuse_devicehub.resources.device.models.Device.working`.
|
||
"""
|
||
elapsed = Column(Interval, nullable=False)
|
||
|
||
@declared_attr
|
||
def __mapper_args__(cls):
|
||
"""
|
||
Defines inheritance.
|
||
|
||
From `the guide <http://docs.sqlalchemy.org/en/latest/orm/
|
||
extensions/declarative/api.html
|
||
#sqlalchemy.ext.declarative.declared_attr>`_
|
||
"""
|
||
args = {POLYMORPHIC_ID: cls.t}
|
||
if cls.t == 'Test':
|
||
args[POLYMORPHIC_ON] = cls.type
|
||
return args
|
||
|
||
|
||
class TestDataStorage(Test):
|
||
"""
|
||
The act of testing the data storage.
|
||
|
||
Testing is done using the `S.M.A.R.T self test
|
||
<https://en.wikipedia.org/wiki/S.M.A.R.T.#Self-tests>`_. Note
|
||
that not all data storage units, specially some new PCIe ones, do not
|
||
support SMART testing.
|
||
|
||
The test takes to other SMART values indicators of the overall health
|
||
of the data storage.
|
||
"""
|
||
id = Column(UUID(as_uuid=True), ForeignKey(Test.id), primary_key=True)
|
||
length = Column(DBEnum(TestDataStorageLength), nullable=False) # todo from type
|
||
status = Column(Unicode(), check_lower('status'), nullable=False)
|
||
lifetime = Column(Interval)
|
||
assessment = Column(Boolean)
|
||
reallocated_sector_count = Column(SmallInteger)
|
||
power_cycle_count = Column(SmallInteger)
|
||
reported_uncorrectable_errors = Column(SmallInteger)
|
||
command_timeout = Column(Integer)
|
||
current_pending_sector_count = Column(SmallInteger)
|
||
offline_uncorrectable = Column(SmallInteger)
|
||
remaining_lifetime_percentage = Column(SmallInteger)
|
||
|
||
def __init__(self, **kwargs) -> None:
|
||
super().__init__(**kwargs)
|
||
|
||
# Define severity
|
||
# As of https://www.backblaze.com/blog/hard-drive-smart-stats/ and
|
||
# https://www.backblaze.com/blog-smart-stats-2014-8.html
|
||
# We can guess some future disk failures by analyzing some SMART data.
|
||
if self.severity is None:
|
||
# Test finished successfully
|
||
if not self.assessment:
|
||
self.severity = Severity.Error
|
||
elif self.current_pending_sector_count and self.current_pending_sector_count > 40 \
|
||
or self.reallocated_sector_count and self.reallocated_sector_count > 10:
|
||
self.severity = Severity.Warning
|
||
|
||
def __str__(self) -> str:
|
||
t = inflection.humanize(self.status)
|
||
if self.lifetime:
|
||
t += ' with a lifetime of {:.1f} years.'.format(self.lifetime.days / 365)
|
||
t += self.description
|
||
return t
|
||
|
||
|
||
class StressTest(Test):
|
||
"""The act of stressing (putting to the maximum capacity)
|
||
a device for an amount of minutes. If the device is not in great
|
||
condition won't probably survive such test.
|
||
"""
|
||
|
||
@validates('elapsed')
|
||
def is_minute_and_bigger_than_1_minute(self, _, value: timedelta):
|
||
seconds = value.total_seconds()
|
||
assert not bool(seconds % 60)
|
||
assert seconds >= 60
|
||
return value
|
||
|
||
def __str__(self) -> str:
|
||
return '{}. Computing for {}'.format(self.severity, self.elapsed)
|
||
|
||
|
||
class Benchmark(JoinedWithOneDeviceMixin, EventWithOneDevice):
|
||
"""The act of gauging the performance of a device."""
|
||
elapsed = Column(Interval)
|
||
|
||
@declared_attr
|
||
def __mapper_args__(cls):
|
||
"""
|
||
Defines inheritance.
|
||
|
||
From `the guide <http://docs.sqlalchemy.org/en/latest/orm/
|
||
extensions/declarative/api.html
|
||
#sqlalchemy.ext.declarative.declared_attr>`_
|
||
"""
|
||
args = {POLYMORPHIC_ID: cls.t}
|
||
if cls.t == 'Benchmark':
|
||
args[POLYMORPHIC_ON] = cls.type
|
||
return args
|
||
|
||
|
||
class BenchmarkDataStorage(Benchmark):
|
||
"""Benchmarks the data storage unit reading and writing speeds."""
|
||
id = Column(UUID(as_uuid=True), ForeignKey(Benchmark.id), primary_key=True)
|
||
read_speed = Column(Float(decimal_return_scale=2), nullable=False)
|
||
write_speed = Column(Float(decimal_return_scale=2), nullable=False)
|
||
|
||
def __str__(self) -> str:
|
||
return 'Read: {} MB/s, write: {} MB/s'.format(self.read_speed, self.write_speed)
|
||
|
||
|
||
class BenchmarkWithRate(Benchmark):
|
||
"""The act of benchmarking a device with a single rate."""
|
||
id = Column(UUID(as_uuid=True), ForeignKey(Benchmark.id), primary_key=True)
|
||
rate = Column(Float, nullable=False)
|
||
|
||
def __str__(self) -> str:
|
||
return '{} points'.format(self.rate)
|
||
|
||
|
||
class BenchmarkProcessor(BenchmarkWithRate):
|
||
"""Benchmarks a processor by executing `BogoMips
|
||
<https://en.wikipedia.org/wiki/BogoMips>`_. Note that this is not
|
||
a reliable way of rating processors and we keep it for compatibility
|
||
purposes.
|
||
"""
|
||
pass
|
||
|
||
|
||
class BenchmarkProcessorSysbench(BenchmarkProcessor):
|
||
"""Benchmarks a processor by using the processor benchmarking
|
||
utility of `sysbench <https://github.com/akopytov/sysbench>`_.
|
||
"""
|
||
|
||
|
||
class BenchmarkRamSysbench(BenchmarkWithRate):
|
||
pass
|
||
|
||
|
||
class ToRepair(EventWithMultipleDevices):
|
||
"""Select a device to be repaired."""
|
||
|
||
|
||
class Repair(EventWithMultipleDevices):
|
||
"""Repair is the act of performing reparations.
|
||
|
||
If a repair without an error is performed,
|
||
it represents that the reparation has been successful.
|
||
"""
|
||
|
||
|
||
class ReadyToUse(EventWithMultipleDevices):
|
||
"""The device is ready to be used.
|
||
|
||
This involves greater preparation from the ``Prepare`` event,
|
||
and users should only use a device after this event is performed.
|
||
|
||
Users usually require devices with this event before shipping them
|
||
to costumers.
|
||
"""
|
||
|
||
|
||
class ToPrepare(EventWithMultipleDevices):
|
||
"""The device has been selected for preparation.
|
||
|
||
See Prepare for more info.
|
||
|
||
Usually **ToPrepare** is the next event done after registering the
|
||
device.
|
||
"""
|
||
pass
|
||
|
||
|
||
class Prepare(EventWithMultipleDevices):
|
||
"""Work has been performed to the device to a defined point of
|
||
acceptance.
|
||
|
||
Users using this event have to agree what is this point
|
||
of acceptance; for some is when the device just works, for others
|
||
when some testing has been performed.
|
||
"""
|
||
|
||
|
||
class Live(JoinedWithOneDeviceMixin, EventWithOneDevice):
|
||
"""A keep-alive from a device connected to the Internet with
|
||
information about its state (in the form of a ``Snapshot`` event)
|
||
and usage statistics.
|
||
"""
|
||
ip = Column(IP, nullable=False,
|
||
comment='The IP where the live was triggered.')
|
||
subdivision_confidence = Column(SmallInteger,
|
||
check_range('subdivision_confidence', 0, 100),
|
||
nullable=False)
|
||
subdivision = Column(DBEnum(Subdivision), nullable=False)
|
||
city = Column(Unicode(STR_SM_SIZE), check_lower('city'), nullable=False)
|
||
city_confidence = Column(SmallInteger,
|
||
check_range('city_confidence', 0, 100),
|
||
nullable=False)
|
||
isp = Column(Unicode(STR_SM_SIZE), check_lower('isp'), nullable=False)
|
||
organization = Column(Unicode(STR_SM_SIZE), check_lower('organization'))
|
||
organization_type = Column(Unicode(STR_SM_SIZE), check_lower('organization_type'))
|
||
|
||
@property
|
||
def country(self) -> Country:
|
||
return self.subdivision.country
|
||
# todo relate to snapshot
|
||
# todo testing
|
||
|
||
|
||
class Organize(JoinedTableMixin, EventWithMultipleDevices):
|
||
"""The act of manipulating/administering/supervising/controlling
|
||
one or more devices.
|
||
"""
|
||
|
||
|
||
class Reserve(Organize):
|
||
"""The act of reserving devices.
|
||
|
||
After this event is performed, the user is the **reservee** of the
|
||
devices. There can only be one non-cancelled reservation for
|
||
a device, and a reservation can only have one reservee.
|
||
"""
|
||
|
||
|
||
class CancelReservation(Organize):
|
||
"""The act of cancelling a reservation."""
|
||
|
||
|
||
class Trade(JoinedTableMixin, EventWithMultipleDevices):
|
||
"""Trade actions log the political exchange of devices between users.
|
||
Every time a trade event is performed, the old user looses its
|
||
political possession, for example ownership, in favor of another
|
||
user.
|
||
|
||
|
||
Performing trade events changes the *Trading* state of the
|
||
device —:class:`ereuse_devicehub.resources.device.states.Trading`.
|
||
"""
|
||
shipping_date = Column(DateTime)
|
||
shipping_date.comment = """
|
||
When are the devices going to be ready for shipping?
|
||
"""
|
||
invoice_number = Column(CIText())
|
||
invoice_number.comment = """
|
||
The id of the invoice so they can be linked.
|
||
"""
|
||
price_id = Column(UUID(as_uuid=True), ForeignKey(Price.id))
|
||
price = relationship(Price,
|
||
backref=backref('trade', lazy=True, uselist=False),
|
||
primaryjoin=price_id == Price.id)
|
||
price_id.comment = """
|
||
The price set for this trade.
|
||
|
||
If no price is set it is supposed that the trade was
|
||
not payed, usual in donations.
|
||
"""
|
||
to_id = Column(UUID(as_uuid=True), ForeignKey(Agent.id), nullable=False)
|
||
# todo compute the org
|
||
to = relationship(Agent,
|
||
backref=backref('events_to',
|
||
lazy=True,
|
||
collection_class=OrderedSet,
|
||
order_by=lambda: Event.created),
|
||
primaryjoin=to_id == Agent.id)
|
||
to_comment = """
|
||
The agent that gets the device due this deal.
|
||
"""
|
||
confirms_id = Column(UUID(as_uuid=True), ForeignKey(Organize.id))
|
||
confirms = relationship(Organize,
|
||
backref=backref('confirmation', lazy=True, uselist=False),
|
||
primaryjoin=confirms_id == Organize.id)
|
||
confirms_id.comment = """
|
||
An organize action that this association confirms.
|
||
|
||
For example, a ``Sell`` or ``Rent``
|
||
can confirm a ``Reserve`` action.
|
||
"""
|
||
|
||
|
||
class Sell(Trade):
|
||
"""The act of taking money from a buyer in exchange of a device."""
|
||
|
||
|
||
class Donate(Trade):
|
||
"""The act of giving devices without compensation."""
|
||
|
||
|
||
class Rent(Trade):
|
||
"""The act of giving money in return for temporary use, but not
|
||
ownership, of a device.
|
||
"""
|
||
|
||
|
||
class CancelTrade(Trade):
|
||
"""The act of cancelling a `Sell`_, `Donate`_ or `Rent`_."""
|
||
# todo cancelTrade does not do anything
|
||
|
||
|
||
class ToDisposeProduct(Trade):
|
||
"""The act of setting a device for being disposed.
|
||
|
||
See :class:`.DisposeProduct`.
|
||
"""
|
||
# todo test this
|
||
|
||
|
||
class DisposeProduct(Trade):
|
||
"""The act of getting rid of devices by giving (selling, donating)
|
||
to another organization, like a waste manager.
|
||
|
||
|
||
See :class:`.ToDispose` and :class:`.DisposeProduct` for
|
||
disposing without trading the device. See :class:`.DisposeWaste`
|
||
and :class:`.Recover` for disposing in-house, this is,
|
||
without trading the device.
|
||
"""
|
||
# todo For usability purposes, users might not directly perform
|
||
# *DisposeProduct*, but this could automatically be done when
|
||
# performing :class:`.ToDispose` + :class:`.Receive` to a
|
||
# ``RecyclingCenter``.
|
||
|
||
|
||
class Receive(JoinedTableMixin, EventWithMultipleDevices):
|
||
"""The act of physically taking delivery of a device.
|
||
|
||
The receiver confirms that the devices have arrived, and thus,
|
||
they are the
|
||
:attr:`ereuse_devicehub.resources.device.models.Device.physical_possessor`.
|
||
|
||
This differs from :class:`.Trade` in that trading changes the
|
||
political possession. As an example, a transporter can *receive*
|
||
a device but it is not it's owner. After the delivery, the
|
||
transporter performs another *receive* to the final owner.
|
||
|
||
The receiver can optionally take a
|
||
:class:`ereuse_devicehub.resources.enums.ReceiverRole`.
|
||
"""
|
||
role = Column(DBEnum(ReceiverRole),
|
||
nullable=False,
|
||
default=ReceiverRole.Intermediary)
|
||
|
||
|
||
class Migrate(JoinedTableMixin, EventWithMultipleDevices):
|
||
"""Moves the devices to a new database/inventory. Devices cannot be
|
||
modified anymore at the previous database.
|
||
"""
|
||
other = Column(URL(), nullable=False)
|
||
other.comment = """
|
||
The URL of the Migrate in the other end.
|
||
"""
|
||
|
||
|
||
class MigrateTo(Migrate):
|
||
pass
|
||
|
||
|
||
class MigrateFrom(Migrate):
|
||
pass
|
||
|
||
|
||
# Listeners
|
||
# Listeners validate values and keep relationships synced
|
||
|
||
# The following listeners avoids setting values to events that
|
||
# do not make sense. For example, EraseBasic to a graphic card.
|
||
|
||
@event.listens_for(TestDataStorage.device, Events.set.__name__, propagate=True)
|
||
@event.listens_for(Install.device, Events.set.__name__, propagate=True)
|
||
@event.listens_for(EraseBasic.device, Events.set.__name__, propagate=True)
|
||
def validate_device_is_data_storage(target: Event, value: DataStorage, old_value, initiator):
|
||
"""Validates that the device for data-storage events is effectively a data storage."""
|
||
if value and not isinstance(value, DataStorage):
|
||
raise TypeError('{} must be a DataStorage but you passed {}'.format(initiator.impl, value))
|
||
|
||
|
||
@event.listens_for(BenchmarkRamSysbench.device, Events.set.__name__, propagate=True)
|
||
def events_not_for_components(target: Event, value: Device, old_value, initiator):
|
||
"""Validates events that cannot be performed to components."""
|
||
if isinstance(value, Component):
|
||
raise TypeError('{!r} cannot be performed to a component ({!r}).'.format(target, value))
|
||
|
||
|
||
# The following listeners keep relationships with device <-> components synced with the event
|
||
# So, if you add or remove devices from events these listeners will
|
||
# automatically add/remove the ``components`` and ``parent`` of such events
|
||
# See the tests for examples
|
||
|
||
@event.listens_for(EventWithOneDevice.device, Events.set.__name__, propagate=True)
|
||
def update_components_event_one(target: EventWithOneDevice, device: Device, __, ___):
|
||
"""
|
||
Syncs the :attr:`.Event.components` with the components in
|
||
:attr:`ereuse_devicehub.resources.device.models.Computer.components`.
|
||
"""
|
||
# For Add and Remove, ``components`` have different meanings
|
||
# see Event.components for more info
|
||
if not isinstance(target, (Add, Remove)):
|
||
target.components.clear()
|
||
if isinstance(device, Computer):
|
||
target.components |= device.components
|
||
|
||
|
||
@event.listens_for(EventWithMultipleDevices.devices, Events.init_collection.__name__,
|
||
propagate=True)
|
||
@event.listens_for(EventWithMultipleDevices.devices, Events.bulk_replace.__name__, propagate=True)
|
||
@event.listens_for(EventWithMultipleDevices.devices, Events.append.__name__, propagate=True)
|
||
def update_components_event_multiple(target: EventWithMultipleDevices,
|
||
value: Union[Set[Device], Device], _):
|
||
"""
|
||
Syncs the :attr:`.Event.components` with the components in
|
||
:attr:`ereuse_devicehub.resources.device.models.Computer.components`.
|
||
"""
|
||
target.components.clear()
|
||
devices = value if isinstance(value, Iterable) else {value}
|
||
for device in devices:
|
||
if isinstance(device, Computer):
|
||
target.components |= device.components
|
||
|
||
|
||
@event.listens_for(EventWithMultipleDevices.devices, Events.remove.__name__, propagate=True)
|
||
def remove_components_event_multiple(target: EventWithMultipleDevices, device: Device, __):
|
||
"""
|
||
Syncs the :attr:`.Event.components` with the components in
|
||
:attr:`ereuse_devicehub.resources.device.models.Computer.components`.
|
||
"""
|
||
target.components.clear()
|
||
for device in target.devices - {device}:
|
||
if isinstance(device, Computer):
|
||
target.components |= device.components
|
||
|
||
|
||
@event.listens_for(EraseBasic.device, Events.set.__name__, propagate=True)
|
||
@event.listens_for(Test.device, Events.set.__name__, propagate=True)
|
||
@event.listens_for(Install.device, Events.set.__name__, propagate=True)
|
||
@event.listens_for(Benchmark.device, Events.set.__name__, propagate=True)
|
||
def update_parent(target: Union[EraseBasic, Test, Install], device: Device, _, __):
|
||
"""
|
||
Syncs the :attr:`Event.parent` with the parent of the device.
|
||
"""
|
||
target.parent = None
|
||
if isinstance(device, Component):
|
||
target.parent = device.parent
|