multivimbroker/multivimbroker/pub/utils/restcall.py

   1 # Copyright (c) 2017 Wind River Systems, Inc.
   2 # Copyright (c) 2017-2018 VMware, Inc.
   3 #
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at:
   7 #       http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12
  13 import sys
  14 import traceback
  15 import logging
  16 # import urllib2
  17 import urllib.request
  18 import urllib.parse
  19 import urllib.error
  20 import uuid
  21 import httplib2
  22 import base64
  23 import codecs
  24
  25 from multivimbroker.pub.config.config import AAI_SCHEMA_VERSION
  26 from multivimbroker.pub.config.config import AAI_SERVICE_URL
  27 from multivimbroker.pub.config.config import AAI_USERNAME
  28 from multivimbroker.pub.config.config import AAI_PASSWORD
  29 from multivimbroker.pub.config.config import MSB_SERVICE_PROTOCOL
  30 from multivimbroker.pub.config.config import MSB_SERVICE_IP, MSB_SERVICE_PORT
  31
  32 rest_no_auth, rest_oneway_auth, rest_bothway_auth = 0, 1, 2
  33 HTTP_200_OK, HTTP_201_CREATED = '200', '201'
  34 HTTP_204_NO_CONTENT, HTTP_202_ACCEPTED = '204', '202'
  35 status_ok_list = [HTTP_200_OK, HTTP_201_CREATED,
  36                   HTTP_204_NO_CONTENT, HTTP_202_ACCEPTED]
  37 HTTP_404_NOTFOUND, HTTP_403_FORBIDDEN = '404', '403'
  38 HTTP_401_UNAUTHORIZED, HTTP_400_BADREQUEST = '401', '400'
  39
  40 logger = logging.getLogger(__name__)
  41
  42
  43 def call_multipart_req(base_url, user, passwd, auth_type, resource, method,
  44                        content, headers=None):
  45     callid = str(uuid.uuid1())
  46 #    logger.debug("[%s]call_req('%s','%s','%s',%s,'%s','%s','%s')" % (
  47 #    callid, base_url, user, passwd, auth_type, resource, method, content))
  48     ret = None
  49     resp = ""
  50     full_url = ""
  51
  52     try:
  53         full_url = combine_url(base_url, resource)
  54         logger.debug("request=%s)" % full_url)
  55         requestObj = urllib.request.Request(full_url, content, headers)
  56         resp = urllib.request.urlopen(requestObj)
  57         if resp.code in status_ok_list:
  58             ret = [0, resp.read(), resp.code, resp]
  59         else:
  60             ret = [1, resp.read(), resp.code, resp]
  61     except urllib.error.URLError as err:
  62         ret = [2, str(err), 500, resp]
  63     except Exception:
  64         logger.error(traceback.format_exc())
  65         logger.error("[%s]ret=%s" % (callid, str(sys.exc_info())))
  66         res_info = str(sys.exc_info())
  67         ret = [3, res_info, 500, resp]
  68     return ret
  69
  70
  71 def call_req(base_url, user, passwd, auth_type, resource, method,
  72              content='', headers=None):
  73     callid = str(uuid.uuid1())
  74 #    logger.debug("[%s]call_req('%s','%s','%s',%s,'%s','%s','%s')" % (
  75 #    callid, base_url, user, passwd, auth_type, resource, method, content))
  76     ret = None
  77     resp_status = '500'
  78     resp = ""
  79     full_url = ""
  80
  81     try:
  82         full_url = combine_url(base_url, resource)
  83         if headers is None:
  84             headers = {}
  85             headers['content-type'] = 'application/json'
  86
  87         if user:
  88             headers['Authorization'] = 'Basic ' + \
  89                 base64.b64encode(('%s:%s' % (user, passwd)).encode()).decode()
  90 #                ('%s:%s' % (user, passwd)).encode("base64")
  91         ca_certs = None
  92         for retry_times in range(3):
  93             http = httplib2.Http(
  94                 ca_certs=ca_certs,
  95                 disable_ssl_certificate_validation=(
  96                     auth_type == rest_no_auth))
  97             http.follow_all_redirects = True
  98             try:
  99                 logger.debug("request=%s)" % full_url)
 100                 resp, resp_content = http.request(
 101                     full_url, method=method.upper(),
 102                     body=content, headers=headers)
 103                 resp_status, resp_body = resp['status'], codecs.decode(
 104                     resp_content, 'UTF-8') if resp_content else None
 105
 106                 if resp_status in status_ok_list:
 107                     ret = [0, resp_body, resp_status, resp]
 108                 else:
 109                     ret = [1, resp_body, resp_status, resp]
 110                 break
 111             except Exception as ex:
 112                 if 'httplib.ResponseNotReady' in str(sys.exc_info()):
 113                     logger.error(traceback.format_exc())
 114                     ret = [1, "Unable to connect to %s" %
 115                            full_url, resp_status, resp]
 116                     continue
 117                 raise ex
 118     except urllib.error.URLError as err:
 119         ret = [2, str(err), resp_status, resp]
 120     except Exception:
 121         logger.error(traceback.format_exc())
 122         logger.error("[%s]ret=%s" % (callid, str(sys.exc_info())))
 123         res_info = str(sys.exc_info())
 124         if 'httplib.ResponseNotReady' in res_info:
 125             res_info = "The URL[%s] request \
 126             failed or is not responding." % full_url
 127         ret = [3, res_info, resp_status, resp]
 128
 129 #    logger.debug("[%s]ret=%s" % (callid, str(ret)))
 130     return ret
 131
 132
 133 def req_by_msb(resource, method, content='', headers=None):
 134     base_url = "%s://%s:%s/" % (
 135         MSB_SERVICE_PROTOCOL, MSB_SERVICE_IP, MSB_SERVICE_PORT)
 136     return call_req(base_url, "", "",
 137                     rest_no_auth, resource, method, content, headers)
 138
 139
 140 def req_by_msb_multipart(resource, method, content, headers=None):
 141     base_url = "%s://%s:%s/" % (
 142         MSB_SERVICE_PROTOCOL, MSB_SERVICE_IP, MSB_SERVICE_PORT)
 143     return call_multipart_req(base_url, "", "",
 144                               rest_no_auth, resource, method, content, headers)
 145
 146
 147 def get_res_from_aai(resource, content=''):
 148     headers = {
 149         'X-FromAppId': 'MultiCloud',
 150         'X-TransactionId': '9001',
 151         'content-type': 'application/json',
 152         'accept': 'application/json'
 153     }
 154     base_url = "%s/%s" % (AAI_SERVICE_URL, AAI_SCHEMA_VERSION)
 155     return call_req(base_url, AAI_USERNAME, AAI_PASSWORD, rest_no_auth,
 156                     resource, "GET", content, headers)
 157
 158
 159 def combine_url(base_url, resource):
 160     full_url = None
 161     if base_url.endswith('/') and resource.startswith('/'):
 162         full_url = base_url[:-1] + resource
 163     elif base_url.endswith('/') and not resource.startswith('/'):
 164         full_url = base_url + resource
 165     elif not base_url.endswith('/') and resource.startswith('/'):
 166         full_url = base_url + resource
 167     else:
 168         full_url = base_url + '/' + resource
 169     return full_url