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devicehub-teal/ereuse_devicehub/resources/action/views.py

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""" This is the view for Snapshots """
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import os
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import json
import shutil
from datetime import datetime
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from distutils.version import StrictVersion
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from uuid import UUID
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from flask.json import jsonify
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from flask import current_app as app, request, g, redirect
from sqlalchemy.util import OrderedSet
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from teal.marshmallow import ValidationError
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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.query import things_response
from ereuse_devicehub.resources.action.models import (Action, RateComputer, Snapshot, VisualTest,
InitTransfer, Live, Allocate, Deallocate)
from ereuse_devicehub.resources.action.rate.v1_0 import CannotRate
from ereuse_devicehub.resources.enums import SnapshotSoftware, Severity
from ereuse_devicehub.resources.user.exceptions import InsufficientPermission
SUPPORTED_WORKBENCH = StrictVersion('11.0')
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def save_json(req_json, tmp_snapshots, user):
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"""
This function allow save a snapshot in json format un a TMP_SNAPSHOTS directory
The file need to be saved with one name format with the stamptime and uuid joins
"""
uuid = req_json.get('uuid', '')
now = datetime.now()
year = now.year
month = now.month
day = now.day
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hour = now.hour
minutes = now.minute
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name_file = f"{year}-{month}-{day}-{hour}-{minutes}_{user}_{uuid}.json"
path_dir_base = os.path.join(tmp_snapshots, user)
path_errors = os.path.join(path_dir_base, 'errors')
path_fixeds = os.path.join(path_dir_base, 'fixeds')
path_name = os.path.join(path_errors, name_file)
if not os.path.isdir(path_dir_base):
os.system(f'mkdir -p {path_errors}')
os.system(f'mkdir -p {path_fixeds}')
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with open(path_name, 'w') as snapshot_file:
snapshot_file.write(json.dumps(req_json))
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return path_name
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def move_json(tmp_snapshots, path_name, user):
"""
This function move the json than it's correct
"""
path_dir_base = os.path.join(tmp_snapshots, user)
if os.path.isfile(path_name):
shutil.copy(path_name, path_dir_base)
os.remove(path_name)
class AllocateMix():
model = None
def post(self):
""" Create one res_obj """
res_json = request.get_json()
res_obj = self.model(**res_json)
db.session.add(res_obj)
db.session().final_flush()
ret = self.schema.jsonify(res_obj)
ret.status_code = 201
db.session.commit()
return ret
def find(self, args: dict):
res_objs = self.model.query.filter_by(author=g.user) \
.order_by(self.model.created.desc()) \
.paginate(per_page=200)
return things_response(
self.schema.dump(res_objs.items, many=True, nested=0),
res_objs.page, res_objs.per_page, res_objs.total,
res_objs.prev_num, res_objs.next_num
)
class AllocateView(AllocateMix, View):
model = Allocate
class DeallocateView(AllocateMix, View):
model = Deallocate
class ActionView(View):
def post(self):
"""Posts an action."""
json = request.get_json(validate=False)
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tmp_snapshots = app.config['TMP_SNAPSHOTS']
path_snapshot = save_json(json, tmp_snapshots, g.user.email)
json.pop('debug', None)
if not json or 'type' not in json:
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raise ValidationError('Resource needs a type.')
# todo there should be a way to better get subclassess resource
# defs
resource_def = app.resources[json['type']]
a = resource_def.schema.load(json)
if json['type'] == Snapshot.t:
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response = self.snapshot(a, resource_def)
move_json(tmp_snapshots, path_snapshot, g.user.email)
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return response
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if json['type'] == VisualTest.t:
pass
# TODO JN add compute rate with new visual test and old components device
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if json['type'] == InitTransfer.t:
move_json(tmp_snapshots, path_snapshot, g.user.email)
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return self.transfer_ownership()
Model = db.Model._decl_class_registry.data[json['type']]()
action = Model(**a)
db.session.add(action)
db.session().final_flush()
ret = self.schema.jsonify(action)
ret.status_code = 201
db.session.commit()
move_json(tmp_snapshots, path_snapshot, g.user.email)
return ret
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def one(self, id: UUID):
"""Gets one action."""
action = Action.query.filter_by(id=id).one()
return self.schema.jsonify(action)
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def snapshot(self, snapshot_json: dict, resource_def):
"""Performs a Snapshot.
See `Snapshot` section in docs for more info.
"""
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# Note that if we set the device / components into the snapshot
# model object, when we flush them to the db we will flush
# snapshot, and we want to wait to flush snapshot at the end
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device = snapshot_json.pop('device') # type: Computer
components = None
if snapshot_json['software'] == (SnapshotSoftware.Workbench or SnapshotSoftware.WorkbenchAndroid):
components = snapshot_json.pop('components', None) # type: List[Component]
snapshot = Snapshot(**snapshot_json)
# Remove new actions from devices so they don't interfere with sync
actions_device = set(e for e in device.actions_one)
device.actions_one.clear()
if components:
actions_components = tuple(set(e for e in c.actions_one) for c in components)
for component in components:
component.actions_one.clear()
assert not device.actions_one
assert all(not c.actions_one for c in components) if components else True
db_device, remove_actions = resource_def.sync.run(device, components)
del device # Do not use device anymore
snapshot.device = db_device
snapshot.actions |= remove_actions | actions_device # Set actions to snapshot
# commit will change the order of the components by what
# the DB wants. Let's get a copy of the list so we preserve order
ordered_components = OrderedSet(x for x in snapshot.components)
# Add the new actions to the db-existing devices and components
db_device.actions_one |= actions_device
if components:
for component, actions in zip(ordered_components, actions_components):
component.actions_one |= actions
snapshot.actions |= actions
if snapshot.software == SnapshotSoftware.Workbench:
# Check ownership of (non-component) device to from current.user
if db_device.owner_id != g.user.id:
raise InsufficientPermission()
# Compute ratings
try:
rate_computer, price = RateComputer.compute(db_device)
except CannotRate:
pass
else:
snapshot.actions.add(rate_computer)
if price:
snapshot.actions.add(price)
elif snapshot.software == SnapshotSoftware.WorkbenchAndroid:
pass # TODO try except to compute RateMobile
# Check if HID is null and add Severity:Warning to Snapshot
if snapshot.device.hid is None:
snapshot.severity = Severity.Warning
self.live(snapshot)
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db.session.add(snapshot)
db.session().final_flush()
ret = self.schema.jsonify(snapshot) # transform it back
ret.status_code = 201
db.session.commit()
return ret
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def live(self, snapshot):
test_hdd= [a for a in snapshot.actions if a.type == "TestDataStorage"]
if not (test_hdd and snapshot.device.allocated):
return
test_hdd = test_hdd[0]
time = test_hdd.power_cycle_count
if time:
data_live = {'time': time,
'serial_number': test_hdd.device.serial_number,
'device': snapshot.device
}
live = Live(**data_live)
snapshot.actions.add(live)
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def transfer_ownership(self):
"""Perform a InitTransfer action to change author_id of device"""
pass
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