Python:REST

REST, REpresentational State Transfer

• Transports JSON-formatted data over HTTP
• Stateless as the server does not hold client context (history). Pre: simple, Con: sometimes more requests needed.

Example code, fetching a file:

#!/usr/bin/env python

import requests
import json
import sys
import urllib3

urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

rest_host = "<servername>"
rest_url = "https://"+rest_host
command_url = "<filepath>"

post_headers = '{"Content-Type":"application/json"}'

def main():
    rest_session = requests.Session()
    response = rest_session.post(rest_url+"/login",
                                data={"USERNAME":<user>,"PASSWORD":<password>},
                                verify=False)
    print "login status: "+str(response.status_code)

    response = rest_session.get(rest_url+command_url,verify=False,stream=True)
    print "Command status: "+str(response.status_code)
    if response.status_code == 200:

        open (<outputfile>, 'wb').write(response.content)
        #with open (<filename>, 'wb') as f:
        #    for chunk in response.iter_content(chunk_size=1024):
        #        f.write(chunk)

    response = rest_session.post(rest_url+"/logout", verify=False)
    return()

main()