97 lines
3.7 KiB
Python
97 lines
3.7 KiB
Python
from contextlib import suppress
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from distutils.version import StrictVersion
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from typing import List
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from uuid import UUID
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from flask import current_app as app, request
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from sqlalchemy.util import OrderedSet
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from teal.resource import View
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from ereuse_devicehub.db import db
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from ereuse_devicehub.resources.device.models import Component, Computer
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from ereuse_devicehub.resources.enums import SnapshotSoftware
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from ereuse_devicehub.resources.event.models import Event, Snapshot, WorkbenchRate
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class EventView(View):
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def post(self):
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"""Posts an event."""
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json = request.get_json(validate=False)
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e = app.resources[json['type']].schema.load(json)
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Model = db.Model._decl_class_registry.data[json['type']]()
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event = Model(**e)
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db.session.add(event)
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db.session.commit()
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ret = self.schema.jsonify(event)
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ret.status_code = 201
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return ret
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def one(self, id: UUID):
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"""Gets one event."""
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event = Event.query.filter_by(id=id).one()
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return self.schema.jsonify(event)
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SUPPORTED_WORKBENCH = StrictVersion('11.0')
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class SnapshotView(View):
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def post(self):
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"""
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Performs a Snapshot.
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See `Snapshot` section in docs for more info.
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"""
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s = request.get_json()
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# Note that if we set the device / components into the snapshot
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# model object, when we flush them to the db we will flush
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# snapshot, and we want to wait to flush snapshot at the end
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device = s.pop('device') # type: Computer
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components = s.pop('components') \
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if s['software'] == SnapshotSoftware.Workbench else None # type: List[Component]
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snapshot = Snapshot(**s)
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# Remove new events from devices so they don't interfere with sync
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events_device = set(e for e in device.events_one)
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device.events_one.clear()
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if components:
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events_components = tuple(set(e for e in c.events_one) for c in components)
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for component in components:
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component.events_one.clear()
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# noinspection PyArgumentList
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assert not device.events_one
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assert all(not c.events_one for c in components) if components else True
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db_device, remove_events = self.resource_def.sync.run(device, components)
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snapshot.device = db_device
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snapshot.events |= remove_events | events_device # Set events to snapshot
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# commit will change the order of the components by what
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# the DB wants. Let's get a copy of the list so we preserve order
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ordered_components = OrderedSet(x for x in snapshot.components)
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# Add the new events to the db-existing devices and components
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db_device.events_one |= events_device
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if components:
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for component, events in zip(ordered_components, events_components):
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component.events_one |= events
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snapshot.events |= events
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# Compute ratings
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with suppress(StopIteration):
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# todo are we sure we want to have snapshots without rates?
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snapshot.events |= next(
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e.ratings() for e in events_device if isinstance(e, WorkbenchRate)
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)
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db.session.add(snapshot)
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db.session.commit()
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# todo we are setting snapshot dirty again with this components but
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# we do not want to update it.
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# The real solution is https://stackoverflow.com/questions/
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# 24480581/set-the-insert-order-of-a-many-to-many-sqlalchemy-
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# flask-app-sqlite-db?noredirect=1&lq=1
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snapshot.components = ordered_components
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ret = self.schema.jsonify(snapshot) # transform it back
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ret.status_code = 201
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return ret
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