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
  24 from multivimbroker.pub.config.config import AAI_SCHEMA_VERSION
  25 from multivimbroker.pub.config.config import AAI_SERVICE_URL
  26 from multivimbroker.pub.config.config import AAI_USERNAME
  27 from multivimbroker.pub.config.config import AAI_PASSWORD
  28 from multivimbroker.pub.config.config import MSB_SERVICE_IP, MSB_SERVICE_PORT
  29
  30 rest_no_auth, rest_oneway_auth, rest_bothway_auth = 0, 1, 2
  31 HTTP_200_OK, HTTP_201_CREATED = '200', '201'
  32 HTTP_204_NO_CONTENT, HTTP_202_ACCEPTED = '204', '202'
  33 status_ok_list = [HTTP_200_OK, HTTP_201_CREATED,
  34                   HTTP_204_NO_CONTENT, HTTP_202_ACCEPTED]
  35 HTTP_404_NOTFOUND, HTTP_403_FORBIDDEN = '404', '403'
  36 HTTP_401_UNAUTHORIZED, HTTP_400_BADREQUEST = '401', '400'
  37
  38 logger = logging.getLogger(__name__)
  39
  40
  41 def call_multipart_req(base_url, user, passwd, auth_type, resource, method,
  42                        content, headers=None):
  43     callid = str(uuid.uuid1())
  44 #    logger.debug("[%s]call_req('%s','%s','%s',%s,'%s','%s','%s')" % (
  45 #    callid, base_url, user, passwd, auth_type, resource, method, content))
  46     ret = None
  47     resp = ""
  48     full_url = ""
  49
  50     try:
  51         full_url = combine_url(base_url, resource)
  52         logger.debug("request=%s)" % full_url)
  53         requestObj = urllib.request.Request(full_url, content, headers)
  54         resp = urllib.request.urlopen(requestObj)
  55         if resp.code in status_ok_list:
  56             ret = [0, resp.read(), resp.code, resp]
  57         else:
  58             ret = [1, resp.read(), resp.code, resp]
  59     except urllib.error.URLError as err:
  60         ret = [2, str(err), 500, resp]
  61     except Exception:
  62         logger.error(traceback.format_exc())
  63         logger.error("[%s]ret=%s" % (callid, str(sys.exc_info())))
  64         res_info = str(sys.exc_info())
  65         ret = [3, res_info, 500, resp]
  66     return ret
  67
  68
  69 def call_req(base_url, user, passwd, auth_type, resource, method,
  70              content='', headers=None):
  71     callid = str(uuid.uuid1())
  72 #    logger.debug("[%s]call_req('%s','%s','%s',%s,'%s','%s','%s')" % (
  73 #    callid, base_url, user, passwd, auth_type, resource, method, content))
  74     ret = None
  75     resp_status = '500'
  76     resp = ""
  77     full_url = ""
  78
  79     try:
  80         full_url = combine_url(base_url, resource)
  81         if headers is None:
  82             headers = {}
  83             headers['content-type'] = 'application/json'
  84
  85         if user:
  86             headers['Authorization'] = 'Basic ' + \
  87                 base64.b64encode(('%s:%s' % (user, passwd)).encode()).decode()
  88 #                ('%s:%s' % (user, passwd)).encode("base64")
  89         ca_certs = None
  90         for retry_times in range(3):
  91             http = httplib2.Http(
  92                 ca_certs=ca_certs,
  93                 disable_ssl_certificate_validation=(
  94                     auth_type == rest_no_auth))
  95             http.follow_all_redirects = True
  96             try:
  97                 logger.debug("request=%s)" % full_url)
  98                 resp, resp_content = http.request(
  99                     full_url, method=method.upper(),
 100                     body=content, headers=headers)
 101                 resp_status, resp_body = resp['status'], resp_content
 102
 103                 if resp_status in status_ok_list:
 104                     ret = [0, resp_body, resp_status, resp]
 105                 else:
 106                     ret = [1, resp_body, resp_status, resp]
 107                 break
 108             except Exception as ex:
 109                 if 'httplib.ResponseNotReady' in str(sys.exc_info()):
 110                     logger.error(traceback.format_exc())
 111                     ret = [1, "Unable to connect to %s" %
 112                            full_url, resp_status, resp]
 113                     continue
 114                 raise ex
 115     except urllib.error.URLError as err:
 116         ret = [2, str(err), resp_status, resp]
 117     except Exception:
 118         logger.error(traceback.format_exc())
 119         logger.error("[%s]ret=%s" % (callid, str(sys.exc_info())))
 120         res_info = str(sys.exc_info())
 121         if 'httplib.ResponseNotReady' in res_info:
 122             res_info = "The URL[%s] request \
 123             failed or is not responding." % full_url
 124         ret = [3, res_info, resp_status, resp]
 125
 126 #    logger.debug("[%s]ret=%s" % (callid, str(ret)))
 127     return ret
 128
 129
 130 def req_by_msb(resource, method, content='', headers=None):
 131     base_url = "http://%s:%s/" % (MSB_SERVICE_IP, MSB_SERVICE_PORT)
 132     return call_req(base_url, "", "",
 133                     rest_no_auth, resource, method, content, headers)
 134
 135
 136 def req_by_msb_multipart(resource, method, content, headers=None):
 137     base_url = "http://%s:%s/" % (MSB_SERVICE_IP, MSB_SERVICE_PORT)
 138     return call_multipart_req(base_url, "", "",
 139                               rest_no_auth, resource, method, content, headers)
 140
 141
 142 def get_res_from_aai(resource, content=''):
 143     headers = {
 144         'X-FromAppId': 'MultiCloud',
 145         'X-TransactionId': '9001',
 146         'content-type': 'application/json',
 147         'accept': 'application/json'
 148     }
 149     base_url = "%s/%s" % (AAI_SERVICE_URL, AAI_SCHEMA_VERSION)
 150     return call_req(base_url, AAI_USERNAME, AAI_PASSWORD, rest_no_auth,
 151                     resource, "GET", content, headers)
 152
 153
 154 def combine_url(base_url, resource):
 155     full_url = None
 156     if base_url.endswith('/') and resource.startswith('/'):
 157         full_url = base_url[:-1] + resource
 158     elif base_url.endswith('/') and not resource.startswith('/'):
 159         full_url = base_url + resource
 160     elif not base_url.endswith('/') and resource.startswith('/'):
 161         full_url = base_url + resource
 162     else:
 163         full_url = base_url + '/' + resource
 164     return full_url