ArcGIS REST API: using /addItem with secure service

Question

Using the code below I am adding 100's of Map Services to a portal instance. The script successfully runs and adds them however the services are secure so I would like portal to store the username and passwords. Using the ESRI API documentation I can see that within the [Item Info Parameters] there are username and password parameters which is a common parameter. How do I call the common parameters and set them?

service_url = arcserver.list_services()

for each in service_url:
    serv_name = each.split('/')[7]
    temp_url = each.split('/')[0:7]
    rest_end_pt =  '/'.join(temp_url) + '/' + serv_name.replace('.', '/')
    title = serv_name.replace('.MapServer', '')
    tag = each.split('/')[6]
    payload = {'token': sh.token, 'url': rest_end_pt, 'title': title, "type": "Map Service"}
    post_url = admin.root + '/addItem'
    print post_url
    a = requests.post(post_url, data=payload)
    print a

Ive tried passing the username and password in multiple variations:

 payload = {'token': sh.token, 'url': rest_end_pt, 'title': title, "type": "Map Service", 'serviceUsername': 'xxx', 'servicePassword': 'xxx'}

Which results in a failure in the form of 400 response.

Answer 1

I spoke with ESRI tech support and this is a defect with the API. At this time you can not add secure services to portal 10.3.1 with the API and have the password stored. It can only be done client side. They claim that this has been fixed in portal 10.4 which will be available in the next few weeks. They also do not have plans to fix this issue for 10.3.1.

After more testing the above statement is incorrect..the code above works the token that has to be passed is the portal token. I hard coded in a token and it worked.