def order_single_food(food): food_id = food['food_id'] count = food['count'] k = food_key(food_id) redis_store = get_redis_store() if redis_store.incrby(k, -count) < 0: redis_store.incrby(k, count) return False return True
def cache_users_data():
db = get_db()
all_users = db.select("select * from user")
db.close()
for u in all_users:
user_cache["dd.user%s.password%s" % (u[1], u[2])] = u[0]
r = get_redis_store()
user_cache["dd.user.min_id"] = int(r.hget("dd.user", "min_id"))
user_cache["dd.user.max_id"] = int(r.hget("dd.user", "max_id"))
def all_orders():
orders = []
redis_store = get_redis_store()
min_user_id = int(redis_store.hget('dd.user', 'min_id'))
max_user_id = int(redis_store.hget('dd.user', 'max_id'))
for user_id in range(min_user_id, max_user_id+1):
order = user_order(user_id)
if order:
orders.append(order)
return my_response(orders)
def cache_foods_data():
r = get_redis_store()
food_cache["dd.food.min_id"] = int(r.hget("dd.food", "min_id"))
food_cache["dd.food.max_id"] = int(r.hget("dd.food", "max_id"))
food_cache["dd.food.json"] = r.get("dd.food.json")
db = get_db()
all_foods = db.select("select * from food")
db.close()
for f in all_foods:
food_cache["dd.food%d.price" % f[0]] = f[2]
def order_muti_foods(cart): for i in range(0, len(cart)): food_id = cart[i]['food_id'] count = cart[i]['count'] k = food_key(food_id) redis_store = get_redis_store() if redis_store.incrby(k, -count) < 0: for j in range(0, i+1): redis_store.incrby(food_key(cart[j]['food_id'], cart[j]['count'])) return False return True
def check_login(name, password):
# p = redis_store.hget("dd.user%s" % name, "password")
# if p != password:
# return False
# access_token = redis_store.hget("dd.user%s" % name, "id")
redis_store = get_redis_store()
access_token = redis_store.get("dd.user%s.password%s" % (name, password))
if access_token == None:
return False
user_id = int(access_token)
# redis_store.set("dd.access%s" % access_token, user_id)
return (user_id, access_token)
def cart_data(cart_id):
data = []
redis_store = get_redis_store()
fid_set = redis_store.smembers("dd.cart%s" % cart_id)
for food_id in fid_set:
count = redis_store.get("dd.cart%s.count%s" % (cart_id, food_id))
if count:
count = int(count)
else:
count = 0
data.append({'food_id': int(food_id), 'count': count})
return data
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
import json
import urlparse
from time import time, sleep
from wsgiref.simple_server import make_server
from db_manager import get_db, get_redis_store
from random import random
import cache
cache.cache_users_data()
cache.cache_foods_data()
redis_store = get_redis_store()
############### special responses ###############
def my_response(data, status_code = 200, status = "ok"):
r = {'status' : status,
'status_code' : status_code}
r['data'] = data if isinstance(data, str) else json.dumps(data)
return r
def bad_req_1():
return my_response({"code": "EMPTY_REQUEST", "message": "请求体为空"}, 400, "Bad Request")
def bad_req_2():
return my_response({"code": "MALFORMED_JSON", "message": "格式错误"}, 400, "Bad Request")
def set_user_order_id(user_id, order_id):
redis_store = get_redis_store()
redis_store.set("dd.order%d" % user_id, order_id)
def user_order_id(user_id):
redis_store = get_redis_store()
return redis_store.get("dd.order%d" % user_id)
def cart_patch(cart_id, food_id, count):
redis_store = get_redis_store()
redis_store.sadd("dd.cart%s" % cart_id, food_id)
k = "dd.cart%s.count%d" % (cart_id, food_id)
if redis_store.incrby(k, count) < 0:
redis_store.set(k, 0)
def cart_len(cart_id):
redis_store = get_redis_store()
return redis_store.scard("dd.cart%s" % cart_id)
def cart_belongs(cart_id, user_id): key = "dd.user%d.cart%s" %(user_id, cart_id) redis_store = get_redis_store() return redis_store.get(key) == '1'
def food_field(food_id, field = "stock"): redis_store = get_redis_store() return int(redis_store.get(food_key(food_id, field)))
rows = db.select('select min(id) from food')
min_food_id = rows[0][0]
rows = db.select('select max(id) from food')
max_food_id = rows[0][0]
rows = db.select('select min(id) from user')
min_user_id = rows[0][0]
rows = db.select('select max(id) from user')
max_user_id = rows[0][0]
all_foods = db.select('select * from food', is_dict=True)
all_users = db.select('select * from user')
db.close()
myr = get_redis_store()
myr.flushdb()
myr.hset('dd.food', 'min_id', min_food_id)
myr.hset('dd.food', 'max_id', max_food_id)
myr.hset('dd.user', 'min_id', min_user_id)
myr.hset('dd.user', 'max_id', max_user_id)
myr.set('dd.food.json', json.dumps(all_foods))
for i in range(0, len(all_foods)):
f = all_foods[i]
myr.set("dd.food%d.stock" % f['id'], f['stock'])
myr.set("dd.food%d.price" % f['id'], f['price'])
for i in range(0, len(all_users)):
u = all_users[i]
myr.set("dd.user%s.password%s" % (u[1], u[2]), u[0])