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1. ffeist-ccg commented on Nov 17, 2021

   

   ffeist-ccg

   on Nov 17, 2021

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   I had this issue. I believe the current eBay sdk is no longer compatible with shopping API because it uses APP ID instead of Auth token to authenticate. My a-few-months-old eBay sdk code didn't work so I had to change a few lines in connection.py as a little hack.

   If you want to do the same:

   1. go here to see how to get your auth credentials: https://developer.ebay.com/api-docs/static/oauth-credentials.html
   2. go here to see what you need in your POST http request to mint an authentication token. these are valid for 2 hours: https://developer.ebay.com/api-docs/static/oauth-client-credentials-grant.html
   3. having done all the steps in (2), including encoding your credentials in base 64, you can edit connection.py in the ebaysdk as follows:

   At the top of connection.py just after imports I added
   import requests
   from requests.structures import CaseInsensitiveDict
   import json
   import datetime
   time_of_last_token = datetime.datetime.min
   previous_access_token = ""

   ...and then within build_request function, just after the line request = Request(self.method, ... files=files,), I added the following:
   time_now = datetime.datetime.now()
   time_difference_last_token = time_now - time_of_last_token
   if time_difference_last_token.total_seconds() > 3600:
   url = "https://api.ebay.com/identity/v1/oauth2/token" # CHANGE THIS BASED ON LINK IN STEP (2)
   headers = CaseInsensitiveDict()
   headers["Content-Type"] = "application/x-www-form-urlencoded"
   headers["Authorization"] = "Basic YOURAUTHENTICATIONDETAILSHERE" # CHANGE BASED ON STEP 2
   data = "grant_type=client_credentials&scope=https%3A%2F%2Fapi.ebay.com%2Foauth%2Fapi_scope"
   response = requests.post(url, headers=headers, data=data)
   response_dict = json.loads(response.text)
   access_token = response_dict['access_token']
   previous_access_token = access_token
   request.headers['X-EBAY-API-IAF-TOKEN'] = access_token

   now the access token will be added to the POST request headers so the authentication works. At least for me. This is a hack and not intended to be a permanent solution so it might not be the best possible way to do things but it worked for me.

   👍React with 👍4Reacted by AN, anony, paddisaap and av1d
2. xjxckk commented on Dec 20, 2021

   

   xjxckk

   on Dec 20, 2021

   More actions

   I made some further changes to @ffeist-ccg's answer as I am using multiple developer accounts.

   In /python/lib/site-packages/ebaysdk/connection.py:

   At the top of the file after the first imports under from ebaysdk.exception import ConnectionError, ConnectionResponseError (above HTTP_SSL = {) I added this:

   ## Added this / https://github.com/timotheus/ebaysdk-python/issues/347
   
   from ebaysdk.config import Config
   from base64 import b64encode
   
   from requests.structures import CaseInsensitiveDict
   import json
   import datetime
   time_of_last_token = datetime.datetime.min
   previous_access_token = ""
   
   ## End of changes
   

   In def init(...) of the BaseConnection class under set_stream_logger() (above self.response = None) I added this:

   ## Added this / https://github.com/timotheus/ebaysdk-python/issues/347
   
   self.config = Config(domain=kwargs.get('domain', 'open.api.ebay.com'), connection_kwargs=kwargs, config_file=kwargs.get('config_file', 'ebay.yaml'))
   
   # Building OAuth token
   client_id = self.config.get('appid', '')
   client_secret = self.config.get('certid', '')
   token_string = f'{client_id}:{client_secret}'
   token_bytes = token_string.encode('ascii')
   token_base64 = b64encode(token_bytes)
   self.final_token = token_base64.decode('ascii')
   
   ## End of changes
   

   Under this line request = Request(self.method, (above the line self.request = request.prepare()) I added this:

   ## Added this / https://github.com/timotheus/ebaysdk-python/issues/347
   
   time_now = datetime.datetime.now()
   time_difference_last_token = time_now - time_of_last_token
   if time_difference_last_token.total_seconds() > 3600:
       url = "https://api.ebay.com/identity/v1/oauth2/token" # If you want to use sandbox you will need to change this URL
       headers = CaseInsensitiveDict()
       headers["Content-Type"] = "application/x-www-form-urlencoded"
       headers["Authorization"] = f"Basic {self.final_token}"
       data = "grant_type=client_credentials&scope=https%3A%2F%2Fapi.ebay.com%2Foauth%2Fapi_scope"
       response = post(url, headers=headers, data=data)
       response_dict = json.loads(response.text)
       access_token = response_dict['access_token']
       previous_access_token = access_token
       request.headers['X-EBAY-API-IAF-TOKEN'] = access_token
   
   ## End of changes
   

   Final connection.py file: https://gist.github.com/xjxckk/805147238c64836648f2e0bd094aca68