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##############################################################################
# Copyright (c) 2020 China Mobile Co.,Ltd and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
'''
a common http_handler
'''
import urllib.request
import json
import ssl
from http.client import HTTPException
from urllib.error import HTTPError, URLError
# pylint: disable=E0611
from log_utils import LOGGER
from errors import ERROR_CODE
# pylint: disable=W0212
ssl._create_default_https_context = ssl._create_unverified_context
HEADERS = {
'Connection': 'keep-alive',
'User-Agent':
'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 \
(KHTML, like Gecko) Chrome/67.0.3396.62 Safari/537.36',
}
TIME_OUT = 3000
class UrllibHttpHandler:
"""
http handler based on urllib of python2.7
"""
def __init__(self):
self.__header = HEADERS
def get(self, url):
"""
run the get request
"""
try:
req = urllib.request.Request(url, headers=self.__header)
res = urllib.request.urlopen(req, timeout=TIME_OUT)
except HTTPException as http_exp:
LOGGER.error(http_exp)
LOGGER.error(u"%s %s", ERROR_CODE['E100001'], url)
except HTTPError as http_err:
LOGGER.error(http_err)
LOGGER.error(u"%s %s", ERROR_CODE['E100001'], url)
LOGGER.error(u"%s %s", ERROR_CODE['E600001'], url)
else:
return res
def post(self, url, parameter=None):
"""
run the post request, parameter must to encode to bytes
"""
try:
data = json.dumps(parameter).encode(encoding="utf-8")
LOGGER.debug("data is %s", data)
req = urllib.request.Request(url, data=data, headers=self.__header)
req.add_header("Content-Type", "application/json")
res = urllib.request.urlopen(req, timeout=TIME_OUT)
except HTTPException as http_exp:
LOGGER.error(http_exp)
LOGGER.error(u"%s %s", ERROR_CODE['E100001'], url)
except TimeoutError as timeout_error:
LOGGER.error(timeout_error)
LOGGER.error(u"%s", ERROR_CODE['E100003'])
except HTTPError as http_err:
LOGGER.error(http_err)
LOGGER.error(u"%s %s", ERROR_CODE['E100001'], url)
LOGGER.error(u"%s %s", ERROR_CODE['E600001'], url)
except URLError as url_err:
LOGGER.error(url_err)
LOGGER.error(u"%s %s", ERROR_CODE['E100001'], url)
else:
return res
def put(self, url, parameter=None):
"""
run the put request, parameter must to encode to bytes
"""
# parameter_data = urllib.parse.urlencode(parameter) #??
data = json.dumps(parameter).encode(encoding="utf-8")
LOGGER.debug("data is %s", data)
req = urllib.request.Request(url, data=data, headers=self.__header)
req.get_method = lambda: 'PUT'
res = urllib.request.urlopen(req)
return res
def patch(self, url, parameter=None, etag=None):
"""
run the patch request, parameter must to encode to bytes
"""
data = json.dumps(parameter).encode(encoding="utf-8")
LOGGER.debug("data is %s", data)
req = urllib.request.Request(url, data=data, headers=self.__header)
req.add_header("Content-Type", "application/json")
req.add_header("If-Match", etag)
req.get_method = lambda: 'PATCH'
res = None
try:
res = urllib.request.urlopen(req, timeout=TIME_OUT)
except HTTPException as http_exp:
LOGGER.error(http_exp)
LOGGER.error(u"%s %s", ERROR_CODE['E100001'], url)
except HTTPError as http_err:
LOGGER.error(http_err)
LOGGER.error(u"%s %s", ERROR_CODE['E100001'], url)
LOGGER.error(u"%s %s", ERROR_CODE['E600001'], url)
except TypeError as type_err:
LOGGER.error(type_err)
LOGGER.error(u"%s %s", ERROR_CODE['E100001'], url)
return res
def delete(self, url):
'''
run the delete request,
'''
req = urllib.request.Request(url, headers=self.__header)
req.get_method = lambda: 'DELETE'
res = urllib.request.urlopen(req)
return res
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