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_IP, MSB_SERVICE_PORT
  30
  31 rest_no_auth, rest_oneway_auth, rest_bothway_auth = 0, 1, 2
  32 HTTP_200_OK, HTTP_201_CREATED = '200', '201'
  33 HTTP_204_NO_CONTENT, HTTP_202_ACCEPTED = '204', '202'
  34 status_ok_list = [HTTP_200_OK, HTTP_201_CREATED,
  35                   HTTP_204_NO_CONTENT, HTTP_202_ACCEPTED]
  36 HTTP_404_NOTFOUND, HTTP_403_FORBIDDEN = '404', '403'
  37 HTTP_401_UNAUTHORIZED, HTTP_400_BADREQUEST = '401', '400'
  38
  39 logger = logging.getLogger(__name__)
  40
  41
  42 def call_multipart_req(base_url, user, passwd, auth_type, resource, method,
  43                        content, headers=None):
  44     callid = str(uuid.uuid1())
  45 #    logger.debug("[%s]call_req('%s','%s','%s',%s,'%s','%s','%s')" % (
  46 #    callid, base_url, user, passwd, auth_type, resource, method, content))
  47     ret = None
  48     resp = ""
  49     full_url = ""
  50
  51     try:
  52         full_url = combine_url(base_url, resource)
  53         logger.debug("request=%s)" % full_url)
  54         requestObj = urllib.request.Request(full_url, content, headers)
  55         resp = urllib.request.urlopen(requestObj)
  56         if resp.code in status_ok_list:
  57             ret = [0, resp.read(), resp.code, resp]
  58         else:
  59             ret = [1, resp.read(), resp.code, resp]
  60     except urllib.error.URLError as err:
  61         ret = [2, str(err), 500, resp]
  62     except Exception:
  63         logger.error(traceback.format_exc())
  64         logger.error("[%s]ret=%s" % (callid, str(sys.exc_info())))
  65         res_info = str(sys.exc_info())
  66         ret = [3, res_info, 500, resp]
  67     return ret
  68
  69
  70 def call_req(base_url, user, passwd, auth_type, resource, method,
  71              content='', headers=None):
  72     callid = str(uuid.uuid1())
  73 #    logger.debug("[%s]call_req('%s','%s','%s',%s,'%s','%s','%s')" % (
  74 #    callid, base_url, user, passwd, auth_type, resource, method, content))
  75     ret = None
  76     resp_status = '500'
  77     resp = ""
  78     full_url = ""
  79
  80     try:
  81         full_url = combine_url(base_url, resource)
  82         if headers is None:
  83             headers = {}
  84             headers['content-type'] = 'application/json'
  85
  86         if user:
  87             headers['Authorization'] = 'Basic ' + \
  88                 base64.b64encode(('%s:%s' % (user, passwd)).encode()).decode()
  89 #                ('%s:%s' % (user, passwd)).encode("base64")
  90         ca_certs = None
  91         for retry_times in range(3):
  92             http = httplib2.Http(
  93                 ca_certs=ca_certs,
  94                 disable_ssl_certificate_validation=(
  95                     auth_type == rest_no_auth))
  96             http.follow_all_redirects = True
  97             try:
  98                 logger.debug("request=%s)" % full_url)
  99                 resp, resp_content = http.request(
 100                     full_url, method=method.upper(),
 101                     body=content, headers=headers)
 102                 resp_status, resp_body = resp['status'], codecs.decode(
 103                     resp_content, 'UTF-8') if resp_content else None
 104
 105                 if resp_status in status_ok_list:
 106                     ret = [0, resp_body, resp_status, resp]
 107                 else:
 108                     ret = [1, resp_body, resp_status, resp]
 109                 break
 110             except Exception as ex:
 111                 if 'httplib.ResponseNotReady' in str(sys.exc_info()):
 112                     logger.error(traceback.format_exc())
 113                     ret = [1, "Unable to connect to %s" %
 114                            full_url, resp_status, resp]
 115                     continue
 116                 raise ex
 117     except urllib.error.URLError as err:
 118         ret = [2, str(err), resp_status, resp]
 119     except Exception:
 120         logger.error(traceback.format_exc())
 121         logger.error("[%s]ret=%s" % (callid, str(sys.exc_info())))
 122         res_info = str(sys.exc_info())
 123         if 'httplib.ResponseNotReady' in res_info:
 124             res_info = "The URL[%s] request \
 125             failed or is not responding." % full_url
 126         ret = [3, res_info, resp_status, resp]
 127
 128 #    logger.debug("[%s]ret=%s" % (callid, str(ret)))
 129     return ret
 130
 131
 132 def req_by_msb(resource, method, content='', headers=None):
 133     base_url = "http://%s:%s/" % (MSB_SERVICE_IP, MSB_SERVICE_PORT)
 134     return call_req(base_url, "", "",
 135                     rest_no_auth, resource, method, content, headers)
 136
 137
 138 def req_by_msb_multipart(resource, method, content, headers=None):
 139     base_url = "http://%s:%s/" % (MSB_SERVICE_IP, MSB_SERVICE_PORT)
 140     return call_multipart_req(base_url, "", "",
 141                               rest_no_auth, resource, method, content, headers)
 142
 143
 144 def get_res_from_aai(resource, content=''):
 145     headers = {
 146         'X-FromAppId': 'MultiCloud',
 147         'X-TransactionId': '9001',
 148         'content-type': 'application/json',
 149         'accept': 'application/json'
 150     }
 151     base_url = "%s/%s" % (AAI_SERVICE_URL, AAI_SCHEMA_VERSION)
 152     return call_req(base_url, AAI_USERNAME, AAI_PASSWORD, rest_no_auth,
 153                     resource, "GET", content, headers)
 154
 155
 156 def combine_url(base_url, resource):
 157     full_url = None
 158     if base_url.endswith('/') and resource.startswith('/'):
 159         full_url = base_url[:-1] + resource
 160     elif base_url.endswith('/') and not resource.startswith('/'):
 161         full_url = base_url + resource
 162     elif not base_url.endswith('/') and resource.startswith('/'):
 163         full_url = base_url + resource
 164     else:
 165         full_url = base_url + '/' + resource
 166     return full_url