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

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2021-05-10 09:47:56 +00:00
""" This is the view for Snapshots """
import os
import json
import shutil
from datetime import datetime
from flask import current_app as app, g
from sqlalchemy.util import OrderedSet
from ereuse_devicehub.db import db
from ereuse_devicehub.resources.action.models import RateComputer, Snapshot
from ereuse_devicehub.resources.device.models import Computer
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
def save_json(req_json, tmp_snapshots, user, live=False):
"""
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
hour = now.hour
minutes = now.minute
name_file = f"{year}-{month}-{day}-{hour}-{minutes}_{user}_{uuid}.json"
path_dir_base = os.path.join(tmp_snapshots, user)
if live:
path_dir_base = tmp_snapshots
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}')
with open(path_name, 'w') as snapshot_file:
snapshot_file.write(json.dumps(req_json))
return path_name
def move_json(tmp_snapshots, path_name, user, live=False):
"""
This function move the json than it's correct
"""
path_dir_base = os.path.join(tmp_snapshots, user)
if live:
path_dir_base = tmp_snapshots
if os.path.isfile(path_name):
shutil.copy(path_name, path_dir_base)
os.remove(path_name)
class SnapshotView():
"""Performs a Snapshot.
See `Snapshot` section in docs for more info.
"""
# 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
def __init__(self, snapshot_json: dict, resource_def, schema):
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# import pdb; pdb.set_trace()
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self.schema = schema
self.resource_def = resource_def
self.tmp_snapshots = app.config['TMP_SNAPSHOTS']
self.path_snapshot = save_json(snapshot_json, self.tmp_snapshots, g.user.email)
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snapshot_json.pop('debug', None)
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self.snapshot_json = resource_def.schema.load(snapshot_json)
self.response = self.build()
move_json(self.tmp_snapshots, self.path_snapshot, g.user.email)
def post(self):
return self.response
def build(self):
device = self.snapshot_json.pop('device') # type: Computer
components = None
if self.snapshot_json['software'] == (SnapshotSoftware.Workbench or SnapshotSoftware.WorkbenchAndroid):
components = self.snapshot_json.pop('components', None) # type: List[Component]
if isinstance(device, Computer) and device.hid:
device.add_mac_to_hid(components_snap=components)
snapshot = Snapshot(**self.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 = self.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
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