282 lines
10 KiB
Python
282 lines
10 KiB
Python
""" This is the view for Snapshots """
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import os
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import json
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import shutil
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from datetime import datetime, timedelta
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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
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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 teal.db import ResourceNotFound
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from ereuse_devicehub.db import db
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from ereuse_devicehub.query import things_response
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from ereuse_devicehub.resources.action.models import (Action, RateComputer, Snapshot, VisualTest,
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InitTransfer, Live, Allocate, Deallocate)
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from ereuse_devicehub.resources.device.models import Device, Computer, DataStorage
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from ereuse_devicehub.resources.action.rate.v1_0 import CannotRate
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from ereuse_devicehub.resources.enums import SnapshotSoftware, Severity
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from ereuse_devicehub.resources.user.exceptions import InsufficientPermission
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SUPPORTED_WORKBENCH = StrictVersion('11.0')
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def save_json(req_json, tmp_snapshots, user):
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"""
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This function allow save a snapshot in json format un a TMP_SNAPSHOTS directory
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The file need to be saved with one name format with the stamptime and uuid joins
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"""
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uuid = req_json.get('uuid', '')
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now = datetime.now()
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year = now.year
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month = now.month
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day = now.day
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hour = now.hour
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minutes = now.minute
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name_file = f"{year}-{month}-{day}-{hour}-{minutes}_{user}_{uuid}.json"
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path_dir_base = os.path.join(tmp_snapshots, user)
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path_errors = os.path.join(path_dir_base, 'errors')
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path_fixeds = os.path.join(path_dir_base, 'fixeds')
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path_name = os.path.join(path_errors, name_file)
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if not os.path.isdir(path_dir_base):
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os.system(f'mkdir -p {path_errors}')
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os.system(f'mkdir -p {path_fixeds}')
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with open(path_name, 'w') as snapshot_file:
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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):
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"""
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This function move the json than it's correct
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"""
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path_dir_base = os.path.join(tmp_snapshots, user)
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if os.path.isfile(path_name):
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shutil.copy(path_name, path_dir_base)
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os.remove(path_name)
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class AllocateMix():
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model = None
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def post(self):
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""" Create one res_obj """
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res_json = request.get_json()
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res_obj = self.model(**res_json)
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db.session.add(res_obj)
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db.session().final_flush()
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ret = self.schema.jsonify(res_obj)
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ret.status_code = 201
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db.session.commit()
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return ret
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def find(self, args: dict):
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res_objs = self.model.query.filter_by(author=g.user) \
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.order_by(self.model.created.desc()) \
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.paginate(per_page=200)
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return things_response(
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self.schema.dump(res_objs.items, many=True, nested=0),
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res_objs.page, res_objs.per_page, res_objs.total,
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res_objs.prev_num, res_objs.next_num
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)
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class AllocateView(AllocateMix, View):
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model = Allocate
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class DeallocateView(AllocateMix, View):
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model = Deallocate
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class ActionView(View):
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def post(self):
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"""Posts an action."""
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json = request.get_json(validate=False)
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tmp_snapshots = app.config['TMP_SNAPSHOTS']
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path_snapshot = save_json(json, tmp_snapshots, g.user.email)
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json.pop('debug', None)
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if not json or 'type' not in json:
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raise ValidationError('Resource needs a type.')
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# todo there should be a way to better get subclassess resource
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# defs
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resource_def = app.resources[json['type']]
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a = resource_def.schema.load(json)
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if json['type'] == Snapshot.t:
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response = self.snapshot(a, resource_def)
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move_json(tmp_snapshots, path_snapshot, g.user.email)
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return response
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if json['type'] == VisualTest.t:
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pass
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# TODO JN add compute rate with new visual test and old components device
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if json['type'] == InitTransfer.t:
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move_json(tmp_snapshots, path_snapshot, g.user.email)
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return self.transfer_ownership()
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Model = db.Model._decl_class_registry.data[json['type']]()
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action = Model(**a)
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db.session.add(action)
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db.session().final_flush()
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ret = self.schema.jsonify(action)
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ret.status_code = 201
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db.session.commit()
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move_json(tmp_snapshots, path_snapshot, g.user.email)
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return ret
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def one(self, id: UUID):
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"""Gets one action."""
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action = Action.query.filter_by(id=id).one()
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return self.schema.jsonify(action)
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def snapshot(self, snapshot_json: dict, resource_def):
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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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# 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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# If the device is allocated, then snapshot is a live
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live = self.live(snapshot_json)
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if live:
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db.session.add(live)
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db.session().final_flush()
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ret = self.schema.jsonify(live) # transform it back
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ret.status_code = 201
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db.session.commit()
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return ret
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device = snapshot_json.pop('device') # type: Computer
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components = None
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if snapshot_json['software'] == (SnapshotSoftware.Workbench or SnapshotSoftware.WorkbenchAndroid):
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components = snapshot_json.pop('components', None) # type: List[Component]
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snapshot = Snapshot(**snapshot_json)
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# Remove new actions from devices so they don't interfere with sync
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actions_device = set(e for e in device.actions_one)
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device.actions_one.clear()
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if components:
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actions_components = tuple(set(e for e in c.actions_one) for c in components)
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for component in components:
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component.actions_one.clear()
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assert not device.actions_one
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assert all(not c.actions_one for c in components) if components else True
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db_device, remove_actions = resource_def.sync.run(device, components)
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del device # Do not use device anymore
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snapshot.device = db_device
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snapshot.actions |= remove_actions | actions_device # Set actions 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 actions to the db-existing devices and components
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db_device.actions_one |= actions_device
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if components:
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for component, actions in zip(ordered_components, actions_components):
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component.actions_one |= actions
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snapshot.actions |= actions
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if snapshot.software == SnapshotSoftware.Workbench:
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# Check ownership of (non-component) device to from current.user
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if db_device.owner_id != g.user.id:
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raise InsufficientPermission()
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# Compute ratings
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try:
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rate_computer, price = RateComputer.compute(db_device)
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except CannotRate:
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pass
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else:
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snapshot.actions.add(rate_computer)
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if price:
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snapshot.actions.add(price)
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elif snapshot.software == SnapshotSoftware.WorkbenchAndroid:
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pass # TODO try except to compute RateMobile
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# Check if HID is null and add Severity:Warning to Snapshot
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if snapshot.device.hid is None:
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snapshot.severity = Severity.Warning
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db.session.add(snapshot)
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db.session().final_flush()
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ret = self.schema.jsonify(snapshot) # transform it back
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ret.status_code = 201
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db.session.commit()
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return ret
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def get_hdd_details(self, snapshot, device):
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"""We get the liftime and serial_number of the disk"""
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usage_time_hdd = None
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serial_number = None
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for hd in snapshot['components']:
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if not isinstance(hd, DataStorage):
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continue
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serial_number = hd.serial_number
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for act in hd.actions:
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if not act.type == "TestDataStorage":
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continue
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usage_time_hdd = act.lifetime
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break
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if usage_time_hdd:
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break
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if not serial_number:
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"There aren't any disk"
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raise ResourceNotFound("There aren't any disk in this device {}".format(device))
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return usage_time_hdd, serial_number
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def live(self, snapshot):
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"""If the device.allocated == True, then this snapshot create an action live."""
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device = snapshot.get('device') # type: Computer
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# TODO @cayop dependency of pulls 85 and 83
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# if the pr/85 and pr/83 is merged, then you need change this way for get the device
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if not device.hid or not Device.query.filter(Device.hid==device.hid).count():
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return None
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device = Device.query.filter(Device.hid==device.hid).one()
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if not device.allocated:
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return None
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usage_time_hdd, serial_number = self.get_hdd_details(snapshot, device)
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data_live = {'usage_time_hdd': usage_time_hdd,
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'serial_number': serial_number,
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'snapshot_uuid': snapshot['uuid'],
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'description': '',
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'device': device}
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live = Live(**data_live)
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if not usage_time_hdd:
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warning = f"We don't found any TestDataStorage for disk sn: {serial_number}"
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live.severity = Severity.Warning
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live.description = warning
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return live
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live.sort_actions()
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diff_time = live.diff_time()
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if diff_time is None:
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warning = "Don't exist one previus live or snapshot as reference"
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live.description += warning
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live.severity = Severity.Warning
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elif diff_time < timedelta(0):
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warning = "The difference with the last live/snapshot is negative"
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live.description += warning
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live.severity = Severity.Warning
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return live
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def transfer_ownership(self):
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"""Perform a InitTransfer action to change author_id of device"""
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pass
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