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models.py
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models.py
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#!/usr/bin/env python
# coding:utf-8
"""
Created by ben on 2010/10/26 .
Copyright (c) 2010 http://sa3.org All rights reserved.
"""
import re
import logging
import random
import string
import os
import hashlib
from google.appengine.ext import db
from util.b36 import Base36
from util.base import filter_url
from util.thumb import resize
from google.appengine.api import images
from google.appengine.api import memcache
def get_md5(bf):
return hashlib.md5(bf).hexdigest()
class Album(db.Model):
'''
sa3album Album Model
'''
slug = db.StringProperty()
name = db.StringProperty()
description = db.StringProperty()
created = db.DateTimeProperty(auto_now_add=True)
last_updated = db.DateTimeProperty(auto_now=True)
cover_url = db.StringProperty()
def put(self):
self.slug = self.key().name()
super(Album,self).put()
@property
def url(self):
return "/b/%s/" % (self.slug)
@property
def m_url(self):
return "/a/album/manage/%s/" % (self.slug)
@property
def count(self):
return Image.all().filter('album =',self).count()
@classmethod
def add(cls,name):
album = Album(name = name,key_name = Counter.get_max('album'))
album.put()
return album
class Image(db.Model):
'''
sa3album Photo Model
'''
album = db.ReferenceProperty(Album)
name = db.StringProperty()
mime = db.StringProperty()
size = db.IntegerProperty()
created = db.DateTimeProperty(auto_now_add=True)
description = db.StringProperty()
width = db.IntegerProperty()
height =db.IntegerProperty()
bf = db.BlobProperty()
md5 = db.StringProperty(indexed=True)
view_count = db.IntegerProperty(default=0) #view count
def put(self):
if self.is_saved():
memcache.delete("f::%s" % self.key().name())
super(Image,self).put()
def delete(self):
memcache.delete("s::%s" % self.key().name())
memcache.delete("f::%s" % self.key().name())
super(Image,self).delete()
@property
def url(self):
return "/d/%s/" %(self.key().name())
@property
def s(self):
''' small image url '''
return "/s/%s/" %(self.key().name())
@property
def download_url(self):
'''downlaod url'''
return "/e/%s/" % (self.key().name())
@property
def f(self):
return "/f/%s/" %(self.key().name())
@property
def copyurl(self):
return "http://%s/f/%s/" %(os.environ['HTTP_HOST'],self.key().name())
@property
def next(self):
'''return next image'''
return Image.all().filter('album =',self.album).order('created').filter('created >', self.created).get()
@property
def prev(self):
'''return prev image'''
return Image.all().filter('album =',self.album).order('-created').filter('created <', self.created).get()
@property
def body(self):
if self.bf:
return self.bf
bfs = ImageBF.all().filter('image =',self)
bf = bfs.order('vid').fetch(10)
if not bf:
bf = self.bfs
return ''.join([f.bf for f in bf])
@property
def des(self):
'''
Return image description,default :imgage name
'''
return self.description if self.description else self.name
def get_resize_img(self,w,h):
key = "r::%s::%s::%s" % (self.key().name(),w,h)
data = memcache.get(key)
if data is None:
logging.info("generate thumb image key:%s" % key)
data = resize(self.body,(w,h))
#make true data size < 1000000
if len(data) < 1000000:
memcache.set(key,data,3600*24)
return data
@classmethod
def add(cls,album,name,mime,bf,**kwargs):
#先檢查md5看圖片是否已經上傳過.
md5 = get_md5(bf)
img = Image.all().filter('md5 =',md5).get()
if img and Setting.get_s().is_check_md5:
logging.info("%s exist" % md5)
return img
key_name = Counter.get_max('image')
size = len(bf)
start =0
splitelen=1000*1000 # 1M limit
if size <= splitelen:
img = Image(album=album,name=name,mime=mime,bf=bf,key_name = key_name,size=size,**kwargs)
else:
img = Image(album=album,name=name,mime=mime,key_name = key_name,size=size,**kwargs)
while start<img.size:
ibf = ImageBF(bf=bf[start:start+splitelen],image = img,vid = start)
ibf.put()
start+=splitelen
t = images.Image(image_data=bf)
img.width = t.width
img.height = t.height
img.md5 = get_md5(bf)
img.put()
return img
@classmethod
def get_by_key_name_with_cache(cls,key_name):
key = "f::%s" % key_name
data = memcache.get(key)
if data is None:
data =Image.get_by_key_name(key_name)
memcache.set(key,data,3600*24)
return data
class ImageBF(db.Model):
'''Image binary file'''
bf = db.BlobProperty()
image = db.ReferenceProperty(Image,collection_name='bfs')
vid = db.IntegerProperty(default=0)
class Counter(db.Model):
'''
sa3album Counter Model
'''
name = db.StringProperty(required=False)
value = db.StringProperty(default ='0') #use base36
created = db.DateTimeProperty(auto_now_add =True)
last_updated = db.DateTimeProperty(auto_now = True)
def put(self):
self.name = self.key().name()
super(Counter,self).put()
@classmethod
def get_count(cls,key_name):
obj = Counter.get_by_key_name(key_name)
if obj is None:
obj = Counter(key_name = key_name)
obj.value = '0'
obj.put()
return obj
@classmethod
def get_max(cls,key_name):
'''
return max value +1
'''
obj = Counter.get_count(key_name)
obj.value = Base36(obj.value)+1
obj.put()
return obj.value
class Setting(db.Model):
name = db.StringProperty()
theme = db.StringProperty()
skey = db.StringProperty()
is_anti_leech = db.BooleanProperty(default=False)
allow_list = db.StringListProperty()
anti_leech_img = db.StringProperty()
copy_txt = db.StringProperty()
api_keys = db.StringListProperty()
#twitter settings
user_key = db.StringProperty()
user_secret = db.StringProperty()
twitter_user = db.StringProperty()
twitter_auto = db.BooleanProperty(default=False)
is_check_md5 = db.BooleanProperty(default=False)
version = '0.2.6'
path = "http://%s" % os.environ['HTTP_HOST']
@classmethod
def get_s(cls):
s = Setting.get_by_key_name('s')
if s is None:
skey = ''.join(random.sample(string.ascii_letters,16))
s = Setting(key_name = 's',name ='sa3album',theme='gallery',skey=skey)
s.put()
#add default album
Album.add('default')
return s
if __name__=='__main__':
pass