dify/api/libs/helper.py
2023-05-15 08:51:32 +08:00

150 lines
4.0 KiB
Python

# -*- coding:utf-8 -*-
import re
import subprocess
import uuid
from datetime import datetime
from zoneinfo import available_timezones
import random
import string
from flask_restful import fields
def run(script):
return subprocess.getstatusoutput('source /root/.bashrc && ' + script)
class TimestampField(fields.Raw):
def format(self, value):
return int(value.timestamp())
def email(email):
# Define a regex pattern for email addresses
pattern = r"^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$"
# Check if the email matches the pattern
if re.match(pattern, email) is not None:
return email
error = ('{email} is not a valid email.'
.format(email=email))
raise ValueError(error)
def uuid_value(value):
if value == '':
return str(value)
try:
uuid_obj = uuid.UUID(value)
return str(uuid_obj)
except ValueError:
error = ('{value} is not a valid uuid.'
.format(value=value))
raise ValueError(error)
def timestamp_value(timestamp):
try:
int_timestamp = int(timestamp)
if int_timestamp < 0:
raise ValueError
return int_timestamp
except ValueError:
error = ('{timestamp} is not a valid timestamp.'
.format(timestamp=timestamp))
raise ValueError(error)
class str_len(object):
""" Restrict input to an integer in a range (inclusive) """
def __init__(self, max_length, argument='argument'):
self.max_length = max_length
self.argument = argument
def __call__(self, value):
length = len(value)
if length > self.max_length:
error = ('Invalid {arg}: {val}. {arg} cannot exceed length {length}'
.format(arg=self.argument, val=value, length=self.max_length))
raise ValueError(error)
return value
class float_range(object):
""" Restrict input to an float in a range (inclusive) """
def __init__(self, low, high, argument='argument'):
self.low = low
self.high = high
self.argument = argument
def __call__(self, value):
value = _get_float(value)
if value < self.low or value > self.high:
error = ('Invalid {arg}: {val}. {arg} must be within the range {lo} - {hi}'
.format(arg=self.argument, val=value, lo=self.low, hi=self.high))
raise ValueError(error)
return value
class datetime_string(object):
def __init__(self, format, argument='argument'):
self.format = format
self.argument = argument
def __call__(self, value):
try:
datetime.strptime(value, self.format)
except ValueError:
error = ('Invalid {arg}: {val}. {arg} must be conform to the format {format}'
.format(arg=self.argument, val=value, lo=self.format))
raise ValueError(error)
return value
def _get_float(value):
try:
return float(value)
except (TypeError, ValueError):
raise ValueError('{0} is not a valid float'.format(value))
def supported_language(lang):
if lang in ['en-US', 'zh-Hans']:
return lang
error = ('{lang} is not a valid language.'
.format(lang=lang))
raise ValueError(error)
def timezone(timezone_string):
if timezone_string and timezone_string in available_timezones():
return timezone_string
error = ('{timezone_string} is not a valid timezone.'
.format(timezone_string=timezone_string))
raise ValueError(error)
def generate_string(n):
letters_digits = string.ascii_letters + string.digits
result = ""
for i in range(n):
result += random.choice(letters_digits)
return result
def get_remote_ip(request):
if request.headers.get('CF-Connecting-IP'):
return request.headers.get('Cf-Connecting-Ip')
elif request.headers.getlist("X-Forwarded-For"):
return request.headers.getlist("X-Forwarded-For")[0]
else:
return request.remote_addr