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# coding: utf-8
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
import json
import time
import hashlib
import requests
import leancloud
from leancloud import utils
from leancloud._compat import iteritems
from leancloud._compat import to_bytes
from leancloud.app_router import AppRouter
__author__ = 'asaka <lan@leancloud.rocks>'
APP_ID = None
APP_KEY = None
MASTER_KEY = None
USE_PRODUCTION = '1'
USE_HTTPS = True
# 兼容老版本，如果 USE_MASTER_KEY 为 None ，并且 MASTER_KEY 不为 None，则使用 MASTER_KEY
# 否则依据 USE_MASTER_KEY 来决定是否使用 MASTER_KEY
USE_MASTER_KEY = None
REGION = 'CN'
app_router = None
SERVER_URLS = {
'CN': 'api.leancloud.cn',
'US': 'us-api.leancloud.cn',
}
SERVER_VERSION = '1.1'
TIMEOUT_SECONDS = 15
def init(app_id, app_key=None, master_key=None):
"""初始化 LeanCloud 的 AppId / AppKey / MasterKey
:type app_id: string_types
:param app_id: 应用的 Application ID
:type app_key: None or string_types
:param app_key: 应用的 Application Key
:type master_key: None or string_types
:param master_key: 应用的 Master Key
"""
if (not app_key) and (not master_key):
raise RuntimeError('app_key or master_key must be specified')
global APP_ID, APP_KEY, MASTER_KEY
APP_ID = app_id
APP_KEY = app_key
MASTER_KEY = master_key
def need_init(func):
def new_func(*args, **kwargs):
if APP_ID is None:
raise RuntimeError('LeanCloud SDK must be initialized')
headers = {
'Content-Type': 'application/json;charset=utf-8',
'X-AVOSCloud-Application-Id': APP_ID,
'X-AVOSCloud-Application-Production': USE_PRODUCTION,
'User-Agent': 'AVOS Cloud python-{0} SDK'.format(leancloud.__version__),
}
md5sum = hashlib.md5()
current_time = str(int(time.time() * 1000))
if (USE_MASTER_KEY is None and MASTER_KEY) or USE_MASTER_KEY is True:
# md5sum.update(current_time + MASTER_KEY)
# headers['X-AVOSCloud-Request-Sign'] = md5sum.hexdigest() + ',' + current_time + ',master'
headers['X-AVOSCloud-Master-Key'] = MASTER_KEY
else:
# In python 2.x, you can feed this object with arbitrary
# strings using the update() method, but in python 3.x,
# you should feed with bytes-like objects.
md5sum.update(to_bytes(current_time + APP_KEY))
headers['X-AVOSCloud-Request-Sign'] = md5sum.hexdigest() + ',' + current_time
user = leancloud.User.get_current()
if user:
headers['X-AVOSCloud-Session-Token'] = user._session_token
return func(headers=headers, *args, **kwargs)
return new_func
def get_base_url():
# try to use the base URL from environ
url = os.environ.get('LC_API_SERVER') or os.environ.get('LEANCLOUD_API_SERVER')
if url:
return '{}/{}'.format(url, SERVER_VERSION)
if REGION == 'US':
# use the hard coded base URL if region is US
host = SERVER_URLS[REGION]
else:
# use base URL from app router
global app_router
if app_router is None:
app_router = AppRouter(APP_ID)
host = app_router.get()
r = {
'schema': 'https' if USE_HTTPS else 'http',
'version': SERVER_VERSION,
'host': host,
}
return '{schema}://{host}/{version}'.format(**r)
def use_production(flag):
"""调用生产环境 / 开发环境的 cloud func / cloud hook
默认调用生产环境。
"""
global USE_PRODUCTION
USE_PRODUCTION = '1' if flag else '0'
def use_master_key(flag=True):
"""是否使用 master key 发送请求。
如果不调用此函数，会根据 leancloud.init 的参数来决定是否使用 master key。
:type flag: bool
"""
global USE_MASTER_KEY
if not flag:
USE_MASTER_KEY = False
return
if not MASTER_KEY:
raise RuntimeError('LeanCloud SDK master key not specified')
USE_MASTER_KEY = True
# def use_https(flag=True):
# """是否启用 HTTPS 和 LeanCloud 存储服务器通讯。
# 默认启用，在 LeanEngine 环境下关闭可以大幅提高 LeanCloud 存储服务查询性能。
#
# :type flag: bool
# """
# global USE_HTTPS
# if not flag:
# USE_HTTPS = False
# else:
# USE_HTTPS = True
def check_error(func):
def new_func(*args, **kwargs):
response = func(*args, **kwargs)
assert isinstance(response, requests.Response)
if response.headers.get('Content-Type') == 'text/html':
raise leancloud.LeanCloudError(-1, 'Bad Request')
content = response.json()
if 'error' in content:
raise leancloud.LeanCloudError(content.get('code', 1), content.get('error', 'Unknown Error'))
return response
return new_func
def region_redirect(func):
def new_func(*args, **kwargs):
response = func(*args, **kwargs)
if response.status_code == 307:
# we are requests another region's API server, and it told us to request another API server
content = response.json()
if app_router:
app_router.update(content)
response = func(*args, **kwargs)
return response
return new_func
def use_region(region):
if region not in SERVER_URLS:
raise ValueError('currently no nodes in the region')
global REGION
REGION = region
def get_server_time():
response = requests.get(get_base_url() + '/date')
content = json.loads(response.text)
return utils.decode('iso', content)
def get_app_info():
return {
'app_id': APP_ID,
'app_key': APP_KEY,
'master_key': MASTER_KEY,
}
@need_init
@region_redirect
@check_error
def get(url, params=None, headers=None):
if not params:
params = {}
else:
for k, v in iteritems(params):
if isinstance(v, dict):
params[k] = json.dumps(v, separators=(',', ':'))
response = requests.get(get_base_url() + url, headers=headers, params=params, timeout=TIMEOUT_SECONDS)
return response
@need_init
@region_redirect
@check_error
def post(url, params, headers=None):
response = requests.post(get_base_url() + url, headers=headers, data=json.dumps(params, separators=(',', ':')), timeout=TIMEOUT_SECONDS)
return response
@need_init
@region_redirect
@check_error
def put(url, params, headers=None):
response = requests.put(get_base_url() + url, headers=headers, data=json.dumps(params, separators=(',', ':')), timeout=TIMEOUT_SECONDS)
return response
@need_init
@region_redirect
@check_error
def delete(url, params=None, headers=None):
response = requests.delete(get_base_url() + url, headers=headers, data=json.dumps(params, separators=(',', ':')), timeout=TIMEOUT_SECONDS)
return response