""" This is the view for Snapshots """ import os import json import shutil from datetime import datetime, timedelta from distutils.version import StrictVersion from uuid import UUID from flask.json import jsonify from flask import current_app as app, request, g, redirect from sqlalchemy.util import OrderedSet from teal.marshmallow import ValidationError from teal.resource import View from teal.db import ResourceNotFound from ereuse_devicehub.db import db 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.device.models import Device, Computer, DataStorage 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') def save_json(req_json, tmp_snapshots, user): """ 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) 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): """ 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) if not json or 'type' not in json: raise ValidationError('Resource needs a type.') # todo there should be a way to better get subclassess resource # defs resource_def = app.resources[json['type']] if json['type'] == Snapshot.t: tmp_snapshots = app.config['TMP_SNAPSHOTS'] path_snapshot = save_json(json, tmp_snapshots, g.user.email) json.pop('debug', None) a = resource_def.schema.load(json) response = self.snapshot(a, resource_def) move_json(tmp_snapshots, path_snapshot, g.user.email) return response if json['type'] == VisualTest.t: pass # TODO JN add compute rate with new visual test and old components device if json['type'] == InitTransfer.t: return self.transfer_ownership() a = resource_def.schema.load(json) 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() return ret def one(self, id: UUID): """Gets one action.""" action = Action.query.filter_by(id=id).one() return self.schema.jsonify(action) def snapshot(self, snapshot_json: dict, resource_def): """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 # If the device is allocated, then snapshot is a live live = self.live(snapshot_json) if live: db.session.add(live) db.session().final_flush() ret = self.schema.jsonify(live) # transform it back ret.status_code = 201 db.session.commit() return ret 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 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 def get_hdd_details(self, snapshot, device): """We get the liftime and serial_number of the disk""" usage_time_hdd = None serial_number = None for hd in snapshot['components']: if not isinstance(hd, DataStorage): continue serial_number = hd.serial_number for act in hd.actions: if not act.type == "TestDataStorage": continue usage_time_hdd = act.lifetime break if usage_time_hdd: break if not serial_number: "There aren't any disk" raise ResourceNotFound("There aren't any disk in this device {}".format(device)) return usage_time_hdd, serial_number def live(self, snapshot): """If the device.allocated == True, then this snapshot create an action live.""" device = snapshot.get('device') # type: Computer # TODO @cayop dependency of pulls 85 and 83 # if the pr/85 and pr/83 is merged, then you need change this way for get the device if not device.hid or not Device.query.filter(Device.hid==device.hid).count(): return None device = Device.query.filter(Device.hid==device.hid).one() if not device.allocated: return None usage_time_hdd, serial_number = self.get_hdd_details(snapshot, device) data_live = {'usage_time_hdd': usage_time_hdd, 'serial_number': serial_number, 'snapshot_uuid': snapshot['uuid'], 'description': '', 'device': device} live = Live(**data_live) if not usage_time_hdd: warning = f"We don't found any TestDataStorage for disk sn: {serial_number}" live.severity = Severity.Warning live.description = warning return live live.sort_actions() diff_time = live.diff_time() if diff_time is None: warning = "Don't exist one previous live or snapshot as reference" live.description += warning live.severity = Severity.Warning elif diff_time < timedelta(0): warning = "The difference with the last live/snapshot is negative" live.description += warning live.severity = Severity.Warning return live def transfer_ownership(self): """Perform a InitTransfer action to change author_id of device""" pass