ceph: fix to support TLS enabled rgw-endpoint

[aruniiird]

Signed-off-by: Arun Kumar Mohan amohan@redhat.com

Description of your changes:
Enables the 'create-external-cluster-resources.py' script to check a given TLS (https) enabled rgw-endpoint.

Which issue is resolved by this Pull Request:
Resolves #

Checklist:

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• Unit tests have been added, if necessary.
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[skip ci]

[leseb]

What's the timeout all ready for this? Can we shorten it to a few seconds? Like <5s?

[aruniiird]

I have added 3 second as per the following doc,

:param timeout: (optional) How many seconds to wait for the server to send data
        before giving up, as a float, or a :ref:`(connect timeout, read timeout) <timeouts>` tuple.
        :type timeout: float or tuple

[leseb]

Did you test your change?

[aruniiird]

Yes I have tested my change individually (by providing URLs like golang , youtube websites and other non-existing) on a separate python file. It works within the timeout.

import sys
import requests

class ExecutionFailureException(Exception):
    pass

def endpoint_check(endpoint_str, timeout=5):
    protocols = ["http", "https"]
    for prefix in protocols:
        try:
            ep = "{}://{}".format(prefix, endpoint_str)
            print("EP: {}".format(ep))
            r = requests.head(ep, timeout=timeout)
            if r.status_code == 200:
                return
            print("EP Status: {}".format(r.status_code))
        except:
            continue
    raise ExecutionFailureException(
        "unable to connect to endpoint: {}".format(endpoint_str))


def main():
    endpoint = "vlang.io"
    if len(sys.argv) > 1:
        endpoint = sys.argv[1]
    endpoint_check(endpoint, timeout=3)

if __name__ == "__main__":
    main()