python.rest.mustache Maven / Gradle / Ivy
# coding: utf-8
"""
Copyright 2016 SmartBear Software
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Credit: this file (rest.py) is modified based on rest.py in Dropbox Python SDK:
https://www.dropbox.com/developers/core/sdks/python
"""
from __future__ import absolute_import
import sys
import io
import json
import ssl
import certifi
import logging
# python 2 and python 3 compatibility library
from six import iteritems
from .configuration import Configuration
try:
import urllib3
except ImportError:
raise ImportError('Swagger python client requires urllib3.')
try:
# for python3
from urllib.parse import urlencode
except ImportError:
# for python2
from urllib import urlencode
logger = logging.getLogger(__name__)
class RESTResponse(io.IOBase):
def __init__(self, resp):
self.urllib3_response = resp
self.status = resp.status
self.reason = resp.reason
self.data = resp.data
def getheaders(self):
"""
Returns a dictionary of the response headers.
"""
return self.urllib3_response.getheaders()
def getheader(self, name, default=None):
"""
Returns a given response header.
"""
return self.urllib3_response.getheader(name, default)
class RESTClientObject(object):
def __init__(self, pools_size=4):
# urllib3.PoolManager will pass all kw parameters to connectionpool
# https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/poolmanager.py#L75
# https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/connectionpool.py#L680
# ca_certs vs cert_file vs key_file
# http://stackoverflow.com/a/23957365/2985775
# cert_reqs
if Configuration().verify_ssl:
cert_reqs = ssl.CERT_REQUIRED
else:
cert_reqs = ssl.CERT_NONE
# ca_certs
if Configuration().ssl_ca_cert:
ca_certs = Configuration().ssl_ca_cert
else:
# if not set certificate file, use Mozilla's root certificates.
ca_certs = certifi.where()
# cert_file
cert_file = Configuration().cert_file
# key file
key_file = Configuration().key_file
# https pool manager
self.pool_manager = urllib3.PoolManager(
num_pools=pools_size,
cert_reqs=cert_reqs,
ca_certs=ca_certs,
cert_file=cert_file,
key_file=key_file
)
def request(self, method, url, query_params=None, headers=None,
body=None, post_params=None):
"""
:param method: http request method
:param url: http request url
:param query_params: query parameters in the url
:param headers: http request headers
:param body: request json body, for `application/json`
:param post_params: request post parameters,
`application/x-www-form-urlencode`
and `multipart/form-data`
"""
method = method.upper()
assert method in ['GET', 'HEAD', 'DELETE', 'POST', 'PUT', 'PATCH', 'OPTIONS']
if post_params and body:
raise ValueError(
"body parameter cannot be used with post_params parameter."
)
post_params = post_params or {}
headers = headers or {}
if 'Content-Type' not in headers:
headers['Content-Type'] = 'application/json'
try:
# For `POST`, `PUT`, `PATCH`, `OPTIONS`
if method in ['POST', 'PUT', 'PATCH', 'OPTIONS']:
if query_params:
url += '?' + urlencode(query_params)
if headers['Content-Type'] == 'application/json':
r = self.pool_manager.request(method, url,
body=json.dumps(body),
headers=headers)
if headers['Content-Type'] == 'application/x-www-form-urlencoded':
r = self.pool_manager.request(method, url,
fields=post_params,
encode_multipart=False,
headers=headers)
if headers['Content-Type'] == 'multipart/form-data':
# must del headers['Content-Type'], or the correct Content-Type
# which generated by urllib3 will be overwritten.
del headers['Content-Type']
r = self.pool_manager.request(method, url,
fields=post_params,
encode_multipart=True,
headers=headers)
# For `GET`, `HEAD`, `DELETE`
else:
r = self.pool_manager.request(method, url,
fields=query_params,
headers=headers)
except urllib3.exceptions.SSLError as e:
msg = "{0}\n{1}".format(type(e).__name__, str(e))
raise ApiException(status=0, reason=msg)
r = RESTResponse(r)
# In the python 3, the response.data is bytes.
# we need to decode it to string.
if sys.version_info > (3,):
r.data = r.data.decode('utf8')
# log response body
logger.debug("response body: %s" % r.data)
if r.status not in range(200, 206):
raise ApiException(http_resp=r)
return r
def GET(self, url, headers=None, query_params=None):
return self.request("GET", url,
headers=headers,
query_params=query_params)
def HEAD(self, url, headers=None, query_params=None):
return self.request("HEAD", url,
headers=headers,
query_params=query_params)
def OPTIONS(self, url, headers=None, query_params=None, post_params=None, body=None):
return self.request("OPTIONS", url,
headers=headers,
query_params=query_params,
post_params=post_params,
body=body)
def DELETE(self, url, headers=None, query_params=None):
return self.request("DELETE", url,
headers=headers,
query_params=query_params)
def POST(self, url, headers=None, query_params=None, post_params=None, body=None):
return self.request("POST", url,
headers=headers,
query_params=query_params,
post_params=post_params,
body=body)
def PUT(self, url, headers=None, query_params=None, post_params=None, body=None):
return self.request("PUT", url,
headers=headers,
query_params=query_params,
post_params=post_params,
body=body)
def PATCH(self, url, headers=None, query_params=None, post_params=None, body=None):
return self.request("PATCH", url,
headers=headers,
query_params=query_params,
post_params=post_params,
body=body)
class ApiException(Exception):
def __init__(self, status=None, reason=None, http_resp=None):
if http_resp:
self.status = http_resp.status
self.reason = http_resp.reason
self.body = http_resp.data
self.headers = http_resp.getheaders()
else:
self.status = status
self.reason = reason
self.body = None
self.headers = None
def __str__(self):
"""
Custom error messages for exception
"""
error_message = "({0})\n"\
"Reason: {1}\n".format(self.status, self.reason)
if self.headers:
error_message += "HTTP response headers: {0}\n".format(self.headers)
if self.body:
error_message += "HTTP response body: {0}\n".format(self.body)
return error_message
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