/
data_store.py
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/
data_store.py
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#!/usr/bin/env python
from google.appengine.ext import ndb
import config
import logging
###############################################
# database record classes
###############################################
class league (ndb.Model):
"""
root node.
doesn't actually need any data, just for store structure
"""
date = ndb.DateTimeProperty(auto_now_add=True)
def get_name(self):
return self.key.string_id()
def __str__(self):
return 'league: ' + self.get_name()
class track (ndb.Model):
"""
track node. sits under league node
doesn't actually need any data, just for store structure
"""
date = ndb.DateTimeProperty(auto_now_add=True)
def get_name(self):
return self.key.string_id()
def __str__(self):
return 'track: ' + self.get_name()
class car_class(ndb.Model):
"""
car class node. sits under track node
doesn't actually need any data, just for store structure
"""
date = ndb.DateTimeProperty(auto_now_add=True)
def get_name(self):
return self.key.string_id()
def __str__(self):
return 'car_class: ' + self.get_name()
class lap_record(ndb.Model):
"""
contains the actual data. sits under the car class node
"""
date = ndb.DateTimeProperty(auto_now_add=True)
driver = ndb.StringProperty(required=True)
car = ndb.StringProperty(required=True)
first_sector = ndb.FloatProperty()
second_sector = ndb.FloatProperty()
total_time = ndb.FloatProperty(required=True)
def __str__(self):
return 'lap: ' + self.driver + ' ' +\
' ' + self.car + ' ' + str(self.total_time)
class fastest_lap(ndb.Model):
"""
parent is the car class just like lap_record.
There is one of these per driver per car class per
track.
it contains a refernce to the actual fastest lap lap_record
for that driver
"""
lap = ndb.KeyProperty(kind='lap_record', required=True)
# These are needed to be able to filter
driver = ndb.StringProperty(required=True)
total_time = ndb.FloatProperty(required=True)
################################################
#class to use to access the data objects
################################################
class leagues:
def get_by_name(self, name=config.root_node()):
return league.get_by_id(name)
def get_all(self):
query = league.query()
league_list = query.run()
lges = set(league_list)
return lges
def get_all_names(self):
league_list = self.get_all()
league_names = [x.get_name() for x in league_list]
lges = league_names
return lges
def add_new(self, name):
lg = self.get_by_name(name)
if lg is None:
lge = league(id=name)
lge.put()
return lge
else:
return lg
class tracks:
league_entity = None
league_name = ""
def __init__(self, lge):
if isinstance(lge, str):
self.league_name = lge
self.league_entity = leagues().get_by_name(lge)
elif isinstance(lge, league):
self.league_name = lge.get_name()
self.league_entity = lge
else:
logging.error("Not a league object")
def get_by_name(self, track_name):
track_key = ndb.Key('league', self.league_entity.get_name(),
'track', track_name)
return track_key.get()
def get_all(self):
query = track.query(ancestor=self.league_entity.key)
track_list = [x for x in query.iter()]
return track_list
def get_all_names(self):
track_list = self.get_all()
track_names = [x.get_name() for x in track_list]
return track_names
def add_new(self, track_name):
tr = track(parent=self.league_entity.key, id=track_name)
tr.put()
return tr
class carclass:
track_entity = None
track_name = ""
def __init__(self, *args):
if (len(args) > 1) and isinstance(args[0], str):
#assume we were give a list of parent names
self.track_name = args[1]
track_key = ndb.Key('league', args[0],
'track', args[1])
self.track_entity = track_key.get()
elif (len(args) == 1) and isinstance(args[0], track):
#assume we were given a parent object
self.track_entity = args[0]
self.track_name = args[0].get_name()
def get_by_name(self, carclass_name):
league_parent = self.track_entity.key.parent().get()
cclass_key = ndb.Key('league', league_parent.get_name(),
'track', self.track_entity.get_name(),
'car_class', carclass_name)
return cclass_key.get()
def get_all(self):
query = car_class.query(ancestor=self.track_entity.key)
class_list = [x for x in query.iter()]
return class_list
def get_all_names(self):
class_list = self.get_all()
class_names = [x.get_name() for x in class_list]
return class_names
def add_new(self, class_name):
cc = car_class(parent=self.track_entity.key, id=class_name)
cc.put()
return cc
class interface:
league_entity = None
def __init__(self, lge):
if isinstance(lge, str):
self.league_entity = leagues().get_by_name(lge)
elif isinstance(lge, league):
self.league_entity = lge
#public functions
def add_lap_time(self, lap_details):
if len(lap_details) < 7:
return
track_name = lap_details['trackName']
#get reference to track
trks = tracks(self.league_entity)
track_entity = trks.get_by_name(track_name)
if track_entity is None:
track_entity = trks.add_new(track_name)
#get reference to car class
car_class_name = lap_details['carClass']
ccs = carclass(track_entity)
car_class_entity = ccs.get_by_name(car_class_name)
if car_class_entity is None:
car_class_entity = ccs.add_new(car_class_name)
logging.info('create a new lap_record object')
#create lap object
driverName = lap_details['driverName']
totalTime = lap_details['totalTime']
new_lr = lap_record(parent=car_class_entity.key,
driver=driverName,
car=lap_details['carName'],
first_sector=lap_details['firstSec'],
second_sector=lap_details['secondSec'],
total_time=totalTime)
if 'date' in lap_details:
new_lr.date = lap_details['date']
new_lr.put()
new_key = new_lr.key
#go through the fastest laps if not present add
#if present update to newewst
flq = fastest_lap.query(ancestor=car_class_entity.key)\
.filter(fastest_lap.driver == driverName)
result = flq.fetch(1)
if len(result) == 0:
new_fl = fastest_lap(parent=car_class_entity.key,
lap=new_key,
driver=driverName,
total_time=totalTime)
new_fl.put()
else:
result = result[0]
if totalTime < result.total_time:
result.lap = new_key
result.total_time = totalTime
result.put()
def get_lap_times(self,
track_name,
car_class_name,
num_results=5,
driver_name='everyone'):
ancestor_key = ndb.Key('league', self.league_entity.get_name(),
'track', track_name,
'car_class', car_class_name)
if driver_name == 'everyone':
q = lap_record.query(ancestor=ancestor_key)\
.order(lap_record.total_time)\
.order(lap_record.date)
else:
q = lap_record.query(ancestor=ancestor_key)\
.filter(lap_record.driver == driver_name)\
.order(lap_record.date)
return q.fetch(num_results)
def get_fastest_lap_times(self,
track_name,
car_class_name,
num_results=5,
driver_name='everyone'):
ancestor_key = ndb.Key('league', self.league_entity.get_name(),
'track', track_name,
'car_class', car_class_name)
if driver_name == 'everyone':
q = fastest_lap.query(ancestor=ancestor_key)\
.order(fastest_lap.total_time)
else:
q = fastest_lap.query(ancestor=ancestor_key)\
.filter(fastest_lap.driver == driver_name)\
.order(fastest_lap.total_time)
return q.fetch(num_results)
def get_lap_times_by_date(self,
track_name,
car_class_name,
num_results=5,
driver_name='all'):
ancestor_key = ndb.Key('league', self.league_entity.get_name(),
'track', track_name,
'car_class', car_class_name)
q = lap_record.query(ancestor=ancestor_key)\
.order(lap_record.date)
return q.fetch(num_results)