multivimbroker/multivimbroker/pub/utils/restcall.py

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