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db.py
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db.py
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#!/usr/bin/python
import config
import counter
import time
import sys
from google.appengine.api import memcache
from google.appengine.ext import db
from google.appengine.runtime.apiproxy_errors import ApplicationError
_short_id_list = dict()
MODE_DM = 8
MODE_MENTION = 4
MODE_LIST = 2
MODE_HOME = 1
MODE_NONE = 0
class Session(db.Model):
shard = db.IntegerProperty(required=True)
@staticmethod
def get_all(shard=None, cursor=None):
while True:
query = Session.all()
if cursor is not None:
query.with_cursor(cursor)
if shard is not None:
query.filter('shard =', int(shard))
try:
for q in query:
yield q
except db.Timeout:
while db.READ_CAPABILITY:
try:
cursor = query.cursor()
except db.Timeout:
pass
else:
break
else:
break
class GoogleUser(db.Model):
enabled_user = db.StringProperty(default='')
shard = db.IntegerProperty(required=True)
interval = db.IntegerProperty(default=3)
last_update = db.IntegerProperty(default=0) # remain count for update
retry = db.IntegerProperty(default=0) # continuouse retry for fail
last_list_id = db.IntegerProperty(default=0)
last_msg_id = db.IntegerProperty(default=0)
last_mention_id = db.IntegerProperty(default=0)
last_dm_id = db.IntegerProperty(default=0)
bold_username = db.BooleanProperty(default=True)
command_prefix = db.StringProperty(default='-')
date_format = db.StringProperty(default=config.DEFAULT_TIME_FORMAT)
locale = db.StringProperty(default=config.DEFAULT_LANGUAGE)
timezone = db.StringProperty(default=config.DEFAULT_TIMEZONE)
msg_template = db.StringProperty(default=config.DEFAULT_TEMPLATE, multiline=True)
display_timeline = db.IntegerProperty(default=MODE_DM | MODE_MENTION)
list_user = db.StringProperty(default='')
list_id = db.IntegerProperty(default=0)
list_name = db.StringProperty(default='')
official_retweet = db.BooleanProperty(default=True)
reverse = db.BooleanProperty(default=False)
_jid = None
def get_jid(self):
if self._jid is None:
try:
self._jid = self.key().name()
except db.NotSavedError:
self._jid = ''
return self._jid
def set_jid(self, value):
self._jid = value
jid = property(get_jid, set_jid)
@staticmethod
def add(jid):
counter.increment('total')
shard = counter.get_count('total') % config.CRON_NUM
google_user = GoogleUser(key_name=jid, shard=shard, last_update=int(time.time()))
google_user.jid = jid
Db.set_datastore(google_user)
return google_user
@staticmethod
def get_by_jid(jid):
user = memcache.get(jid, 'jid')
if user is None:
user = GoogleUser.get_by_key_name(jid)
if user:
Db.set_cache(user)
else:
user = None
return user
@staticmethod
def get_all(shard=None, cursor=None):
while True:
query = GoogleUser.all().filter('enabled_user >', '')
if cursor is not None:
query.with_cursor(cursor)
if shard is not None:
query.filter('shard =', int(shard))
try:
for q in query:
yield q
except db.Timeout:
while db.READ_CAPABILITY:
try:
cursor = query.cursor()
except db.Timeout:
pass
else:
break
else:
break
@staticmethod
def disable(jid):
user = GoogleUser.get_by_jid(jid)
if user:
user.enabled_user = ''
Db.set_datastore(user)
class TwitterUser(db.Model):
access_token_key = db.StringProperty(required=True)
access_token_secret = db.StringProperty()
twitter_name = db.StringProperty()
google_user = db.StringProperty(required=True)
@staticmethod
def get_by_jid(jid):
cursor = None
while True:
query = TwitterUser.all().filter('google_user =', jid).with_cursor(cursor)
try:
for q in query:
yield q
except db.Timeout:
while db.READ_CAPABILITY:
try:
cursor = query.cursor()
except db.Timeout:
pass
else:
break
except db.NotSavedError:
raise GeneratorExit
else:
break
@staticmethod
def add(jid, access_token_key, access_token_secret=None, twitter_name=None):
try:
twitter_user = TwitterUser.get_by_twitter_name(twitter_name, jid)
if twitter_user is not None:
twitter_user.delete()
except db.NotSavedError:
pass
twitter_user = TwitterUser(access_token_key=access_token_key, access_token_secret=access_token_secret,
twitter_name=twitter_name, google_user=jid)
Db.set_datastore(twitter_user)
@staticmethod
def get_by_twitter_name(name, jid):
key_name = name if name is not None else ''
user = memcache.get(jid + ':' + key_name, 'twitter_name')
if user is None:
while db.READ_CAPABILITY:
try:
user = TwitterUser.all().filter('google_user =', jid).filter('twitter_name =', name).fetch(1)
except db.Timeout:
pass
else:
break
if user:
user = user[0]
Db.set_cache(user)
else:
user = None
return user
class IdList(db.Model):
short_id_list = list()
short_id_list_str = db.TextProperty(default='')
list_pointer = db.IntegerProperty(default=0)
@staticmethod
def add(jid, shard):
data = ','.join('0' for _ in xrange(config.MAX_SHORT_ID_LIST_NUM))
cls = type('IdList%d' % shard, (IdList,), {})
short_id_list = cls(key_name=jid, short_id_list_str=data)
Db.set_datastore(short_id_list)
return short_id_list
@staticmethod
def get_by_jid(jid, shard):
if jid in _short_id_list:
short_id_list = _short_id_list[jid]
else:
cls = type('IdList%d' % shard, (IdList,), {})
setattr(sys.modules[__name__], cls.__name__, cls)
short_id_list = memcache.get(jid, 'short_id_list')
if short_id_list is None:
cls = type('IdList%d' % shard, (IdList,), {})
short_id_list = cls.get_by_key_name(jid)
if short_id_list is None:
short_id_list = IdList.add(jid, shard)
else:
Db.set_cache(short_id_list)
short_id_list.short_id_list = short_id_list.short_id_list_str.split(',')
global _short_id_list
_short_id_list[jid] = short_id_list
return short_id_list
@staticmethod
def set(jid, new_id_list):
global _short_id_list
new_id_list.short_id_list_str = ','.join(new_id_list.short_id_list)
_short_id_list[jid] = new_id_list
@staticmethod
def flush(jid):
if jid in _short_id_list:
Db.set_datastore(_short_id_list[jid])
del _short_id_list[jid]
class Db:
@staticmethod
def set_cache(data):
def cache_set(*args, **kwargs):
for _ in xrange(config.MAX_RETRY):
if memcache.set(*args, **kwargs):
break
if isinstance(data, GoogleUser):
return cache_set(data.jid, data, time=180, namespace='jid')
elif isinstance(data, TwitterUser):
key_name = data.twitter_name if data.twitter_name is not None else ''
return cache_set(key_name, data, time=180, namespace='twitter_name')
elif isinstance(data, IdList):
setattr(sys.modules[__name__], data.__class__.__name__, data.__class__)
return cache_set(data.key().name(), data, time=180, namespace='short_id_list')
elif type(data) is dict and 'id_str' in data:
return cache_set(data['id_str'], data, time=86400, namespace='status')
return False
@staticmethod
def set_datastore(data):
def datastore_set(model):
try:
data.put()
except db.BadKeyError:
pass
while db.WRITE_CAPABILITY:
try:
if data.is_saved():
Db.set_cache(data)
db.run_in_transaction(datastore_set, data)
else:
db.run_in_transaction(datastore_set, data)
Db.set_cache(data)
except (db.Timeout, ApplicationError, db.TransactionFailedError, db.BadRequestError):
pass
else:
break