def create(self):
"""
Create a new session
"""
# Generate a unique id
self._data['id'] = str(uuid4())
# Set created_at to now
self._data['created_at'] = datetime.now().timestamp()
# Save session settings
redis.hset(f"session::{self.id}",
mapping={
"title": self.title,
"description": self.description,
"created_at": self.created_at,
"duration": self.duration
})
# Set ttl of session settings (expire this redis key 500 seconds after the session ends)
redis.expire(f'session::{self.id}', self.timeToEnd().seconds + (500))
# enqueue a job to close the session at the session end time
scheduler.enqueue_in(timedelta(seconds=self.duration), closeSession,
self.id)
print(f"Session created: {self.id}")
def get_lock(key, timeout=10, user_wait_timeout=15):
import time
_lock, lock_key = 0, "%s_dynamic_lock" % key
wait_timestamp = int(time.time()) + user_wait_timeout
while _lock != 1:
timestamp = int(time.time() + timeout)
# 延时11秒
_lock = redis.setnx(lock_key, timestamp)
# 如果持有锁，当前时间大于过期时间，说明已经超时了
if _lock == 1:
redis.expire(lock_key, int(time.time()) + timeout)
return 'success', lock_key
lock_key_time = redis.get(lock_key)
if lock_key_time:
if int(time.time()) > int(lock_key_time):
new_time = redis.getset(lock_key, int(time.time()) + timeout)
if not new_time or lock_key_time == new_time:
redis.expire(lock_key, int(time.time()) + timeout)
return 'success', lock_key
else:
if int(time.time()) > wait_timestamp:
return 'timeout', lock_key
time.sleep(0.1)
else:
if int(time.time()) > wait_timestamp:
return 'timeout', lock_key
time.sleep(0.3)
def update_session(user_id, next_filter=None, **kwargs):
if next_filter is not None:
redis.hset(user_id, 'next_filter', next_filter)
params = {k: v for k, v in kwargs.items() if k in FILTERS}
if params:
redis.hmset(user_id, params)
redis.expire(user_id, app.config['EXPIRE'])
def _check_code(uuid, code):
if rd.hget(uuid, 'code').decode('utf8') != code:
raise Forbidden('wrong captcha')
rd.hmset(uuid, {
'success': 1,
})
rd.expire(uuid, 60)
def start_session(sender_id, message_text):
# if 'hi' in message_text.lower():
# redis.set(sender_id, {'started_at': int(time.time())})
# send_text_message(sender_id, 'Hi! Nice to meet you!')
# else:
# send_text_message(sender_id, 'Say hi!')
redis.hmset(sender_id, {'started_at': int(time.time())})
redis.expire(sender_id, 300)
return process_city(sender_id, message_text)
def count_online():
when = int(time.time()) / PERIOD * PERIOD
key = KEY.format(when)
redis.expire(key, PERIOD * SAMPLES)
total = 0
for i in xrange(SAMPLES):
key = 'online:{}'.format(when - (PERIOD * i))
total += len(redis.smembers(key))
total /= SAMPLES
return total or 1
def gen_id(): # 根据redis+snowflake生成自增分布式ID
ms = int(datetime.now().timestamp() * 1000)
seq_id = redis.incr(ms)
redis.expire(ms, 2)
seq_id = seq_id % 4096
ms = ms << 17
work_id = current_app.config["WORK_ID"] # 只有容纳0-31台服务
work_id = work_id << 12
# 合并成long字长的整数
ms += ms + work_id + seq_id
return ms
def get_mail_captcha_api():
form = MailForm().validate_for_api()
uuid = 'M-' + _generate_uuid()
code = _generate_code()
rd.hmset(uuid, {
'code': code,
'success': 0,
})
rd.expire(uuid, 3600)
send_verification_mail(form.mail.data, code)
return jsonify({'code': 0, 'data': {'uuid': uuid}})
def get_image_captcha_api():
uuid = 'I-' + _generate_uuid()
code = _generate_code()
rd.hmset(uuid, {
'code': code,
'success': 0,
})
rd.expire(uuid, 300)
img = ImageCaptcha()
image = img.generate_image(code)
base64_str = _image_to_base64(image)
return jsonify({'code': 0, 'data': {'image': base64_str, 'uuid': uuid}})
def make_cache_rate(rates, providers):
ts_now = datetime.datetime.now().timestamp()
payload = {
'time_stamp': str(ts_now),
'rates': json.dumps(rates),
'providers': json.dumps([provider.url for provider in providers])
}
redis.hmset('rate_ten_mins', payload)
redis.expire('rate_ten_mins', 10 * 60)
redis.hmset('daily_ ' + str(ts_now), payload)
redis.expire('daily_ ' + str(ts_now), 60 * 60 * 24)
def addIPAddress(self, ip_address):
"""
Add an IP address to the IP address list
"""
self._data['ip_addresses'].add(ip_address)
keyExists = True
if redis.exists(f'session::{self.id}::ip_addresses') == 0:
keyExists = False
redis.sadd(f'session::{self.id}::ip_addresses', ip_address)
if not keyExists:
redis.expire(f'session::{self.id}::ip_addresses',
self.timeToEnd().seconds + (500))
def get(self):
""" 获取/生成token """
token = redis.get(self.token_id)
if token:
return jsonify({'token': token.decode('utf-8'), 'expiration': redis.ttl(self.token_id)})
else:
token = g.current_user.generate_auth_token(
expiration=current_app.config['TOKEN_EXPIRATION'])
redis.set(self.token_id, token)
redis.expire(self.token_id, current_app.config['TOKEN_EXPIRATION'])
return jsonify({
'token': token,
'expiration': current_app.config['TOKEN_EXPIRATION']
})
def addPost(self, post):
"""
Add a post to the post list
"""
if self.isEnded():
raise Exception('This session has ended.')
self._data['posts'].append(post)
keyExists = True
if redis.exists(f'session::{self.id}::posts') == 0:
keyExists = False
redis.lpush(f'session::{self.id}::posts', post)
if not keyExists:
redis.expire(f'session::{self.id}::posts',
self.timeToEnd().seconds + (500))
def on_finish(self):
if self.result:
base_log = f"IP：{self.request.remote_ip}，用户：{self.data['account']}"
if self.result['status_code'] == 200:
key = f"token:{self.result['data']['token']}"
redis.hmset(key, {"url": self.data['url'], "account": self.data["account"]})
redis.expire(key, 3600)
# 获取用户信息
user_client = self.school.get_auth_user(self.data['account'])['data']
user_info = user_client.get_info()
logger.info("%s，绑定成功：%s", base_log, user_info['real_name'])
# TODO 保存用户信息
else:
logger.warning("%s，错误信息：%s", base_log, self.result['data'])
def process_prompt(next_prompt, user_id, message_text):
if next_prompt < len(PROMPTS):
prompt = PROMPTS[next_prompt]
value = prompt['formatter'](message_text)
redis.hset(user_id, prompt['name'], value)
redis.hset(user_id, 'next_prompt', next_prompt+1)
redis.expire(user_id, app.config['EXPIRE'])
if next_prompt < len(PROMPTS):
send_text_message(user_id, PROMPT_GREETINGS[next_prompt+1])
return
res = book_a_table(redis.hget(user_id, 'id_rest'),
redis.hget(user_id, 'time'),
redis.hget(user_id, 'persons'),
redis.hget(user_id, 'firstName'),
redis.hget(user_id, 'phone'))
send_text_message(user_id, str(res))
def post(self):
json_data = data_json()
email = json_data["email"]
password = json_data["password"]
user = User.query.filter_by(email=email).first()
if (user.verify_password(password)):
if (redis.hexists(email, "field1")):
token = redis.hget(email, "field1")
return jsonify({"token": token})
min_expire_token = 25
number_bytes = 256
token = token_urlsafe(number_bytes)
redis.hset(email, "field1", token)
redis.expire(email, 60 * min_expire_token)
return jsonify({"token": token})
else:
return jsonify({"error": "password dont check"}), 400
def wrapper(*args, **kwargs):
key = "{0}: {1}".format(request.remote_addr, request.path)
try:
remaining = limit - int(redis.get(key))
except (ValueError, TypeError):
remaining = limit
redis.set(key, 0)
expires_in = redis.ttl(key)
if not expires_in:
redis.expire(key, window)
expires_in = window
g.rate_limits = (limit, remaining-1, time()+expires_in)
if remaining > 0:
redis.incr(key, 1)
return func(*args, **kwargs)
return TOO_MANY_REQUESTS
def wrapper(*args, **kwargs):
key = "{0}: {1}".format(request.remote_addr, request.path)
try:
remaining = limit - int(redis.get(key))
except (ValueError, TypeError):
remaining = limit
redis.set(key, 0)
expires_in = redis.ttl(key)
if not expires_in:
redis.expire(key, window)
expires_in = window
g.rate_limits = (limit, remaining-1, time()+expires_in)
if remaining > 0:
redis.incr(key, 1)
return func(*args, **kwargs)
return TOO_MANY_REQUESTS
def addEmail(self, email):
"""
Add email to email list, emails on this list will be sent a message with the final results
"""
# Don't allow modifications to data after the session has ended
if self.isEnded():
raise Exception('This session has ended.')
# Force emails to lowercase
email = email.lower()
# Add email address to this session's email set
self._data['emails'].add(email)
# Save to redis
keyExists = True
if redis.exists(f'session::{self.id}::emails') == 0:
keyExists = False
redis.sadd(f'session::{self.id}::emails', email)
## set ttl on the key if it was just created
if not keyExists:
redis.expire(f'session::{self.id}::emails',
self.timeToEnd().seconds + (500))
def product(id):
product = Product.query.get_or_404(id)
product_key = "product-%s" % product.id
redis.set(product_key, product.name)
redis.expire(product_key, 180)
return render_template("catalog/product.html", product=product)
def start_prompt_user(sender_id, id_rest):
redis.hset(sender_id, 'next_prompt', 0)
redis.hset(sender_id, 'ready', 1)
redis.hset(sender_id, 'id_rest', id_rest)
redis.expire(sender_id, app.config['EXPIRE'])
send_text_message(sender_id, PROMPT_GREETINGS[0])
def do_payment(pending_id):
# Create locked celery job (using redis) to send payment
k = "do_payment:%s" % pending_id
if redis.setnx(k, 1):
redis.expire(k, LOCK_EXPIRE)
pending = PendingTransaction.query.get(pending_id)
# Only do the task if signed is not completed already
if pending.tx_signed is False:
r = tx_sign(pending.destination, pending.amount, pending.sequence)
if r['result']['status'] == 'success' and 'tx_blob' in r['result']:
# Signing was successful
pending.tx_blob = r['result']['tx_blob']
pending.tx_hash = r['result']['tx_json']['hash']
pending.tx_signed = True
db.session.add(pending)
db.session.commit()
# Also save info to Payable
payable = Payable.query.get(pending.payable)
payable.tx_blob = pending.tx_blob
payable.tx_hash = pending.tx_hash
payable.tx_signed = pending.tx_signed
db.session.add(payable)
db.session.commit()
if pending.tx_signed is True and pending.tx_submitted is False:
# Check if tx has already been submitted successfully
verify = verify_tx(pending.tx_hash)
if verify['result']['status'] == 'success' and 'validated' in r['result']:
if verify['result']['validated'] is True:
pending.tx_submitted = True
db.session.add(pending)
db.session.commit()
else:
r = submit_tx_blob(pending.tx_blob)
if r['result']['status'] == 'success':
if r['result']['engine_result_code'] == 0:
# payment was successful
tx = r['result']['tx_json']
pending.tx_submitted = True
db.session.add(pending)
db.session.commit()
payable = Payable.query.get(pending.payable)
payable.tx_submitted = True
db.session.add(payable)
db.session.commit()
if pending.tx_signed is True and pending.tx_submitted is True and pending.tx_validated is False:
# Verify tx was confirmed and validated
r = verify_tx(pending.tx_hash)
if r['result']['status'] == 'success' and 'validated' in r['result']:
if r['result']['validated'] is True:
# tx has been confirmed
tx = r['result']
payable = Payable.query.get(pending.payable)
payable.tx_validated = True
payable.account_fulfilled = tx['Account']
payable.amount_fulfilled = tx['Amount']
payable.destination_fulfilled = tx['Destination']
payable.fee_fulfilled = tx['Fee']
payable.flags_fulfilled = tx['Flags']
payable.sequence_fulfilled = tx['Sequence']
payable.signing_pub_key_fulfilled = tx['SigningPubKey']
payable.transaction_type_fulfilled = tx['TransactionType']
payable.tx_signature_fulfilled = tx['TxnSignature']
payable.tx_hash_fulfilled = tx['hash']
payable.ledger_index_fulfilled = tx['ledger_index']
db.session.add(payable)
db.session.commit()
db.session.delete(pending)
db.session.commit()
else:
# Validation typically takes 5 seconds to confirm
# celery retry is bugging out the redis lock release
pass
if pending.tx_signed is True and pending.tx_submitted is True and pending.tx_validated is True:
# If all 3 conditions are true, the pending entry should be deleted
db.session.delete(pending)
db.session.commit()
# Release the redis lock after we're done working on it
redis.delete(k)
else:
# The payment is redis locked
print "Aborting: the payment is currently locked."