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#!@PYTHON@ -tt
# Copyright (c) 2018 Dell Inc. or its subsidiaries. All Rights Reserved.
# Fence agent for devices that support the Redfish API Specification.
import sys
import re
import logging
import json
import requests
import atexit
sys.path.append("@FENCEAGENTSLIBDIR@")
from fencing import *
from fencing import fail_usage, run_delay
GET_HEADERS = {'accept': 'application/json', 'OData-Version': '4.0'}
POST_HEADERS = {'content-type': 'application/json', 'accept': 'application/json',
'OData-Version': '4.0'}
def get_power_status(conn, options):
response = send_get_request(options, options["--systems-uri"])
if response['ret'] is False:
fail_usage("Couldn't get power information")
data = response['data']
try:
logging.debug("PowerState is: " + data[u'PowerState'])
except Exception:
fail_usage("Unable to get PowerState: " + "https://" + options["--ip"] + ":" + str(options["--ipport"]) + options["--systems-uri"])
if data[u'PowerState'].strip() == "Off":
return "off"
else:
return "on"
def set_power_status(conn, options):
action = {
'on' : "On",
'off': "ForceOff",
'reboot': "ForceRestart",
'diag': "Nmi"
}[options.get("original-action") or options["--action"]]
payload = {'ResetType': action}
# Search for 'Actions' key and extract URI from it
response = send_get_request(options, options["--systems-uri"])
if response['ret'] is False:
return {'ret': False}
data = response['data']
action_uri = data["Actions"]["#ComputerSystem.Reset"]["target"]
response = send_post_request(options, action_uri, payload)
if response['ret'] is False:
fail_usage("Error sending power command")
if options.get("original-action") == "diag":
return True
return
def send_get_request(options, uri):
full_uri = "https://" + options["--ip"] + ":" + str(options["--ipport"]) + uri
try:
resp = requests.get(full_uri, verify=not "--ssl-insecure" in options,
headers=GET_HEADERS,
auth=(options["--username"], options["--password"]))
data = resp.json()
except Exception as e:
fail_usage("Failed: send_get_request: " + str(e))
return {'ret': True, 'data': data}
def send_post_request(options, uri, payload):
full_uri = "https://" + options["--ip"] + ":" + str(options["--ipport"]) + uri
try:
requests.post(full_uri, data=json.dumps(payload),
headers=POST_HEADERS, verify=not "--ssl-insecure" in options,
auth=(options["--username"], options["--password"]))
except Exception as e:
fail_usage("Failed: send_post_request: " + str(e))
return {'ret': True}
def find_systems_resource(options):
response = send_get_request(options, options["--redfish-uri"])
if response['ret'] is False:
return {'ret': False}
data = response['data']
if 'Systems' not in data:
# Systems resource not found"
return {'ret': False}
else:
response = send_get_request(options, data["Systems"]["@odata.id"])
if response['ret'] is False:
return {'ret': False}
data = response['data']
# need to be able to handle more than one entry
for member in data[u'Members']:
system_uri = member[u'@odata.id']
return {'ret': True, 'uri': system_uri}
def define_new_opts():
all_opt["redfish-uri"] = {
"getopt" : ":",
"longopt" : "redfish-uri",
"help" : "--redfish-uri=[uri] Base or starting Redfish URI",
"required" : "0",
"default" : "/redfish/v1",
"shortdesc" : "Base or starting Redfish URI",
"order": 1
}
all_opt["systems-uri"] = {
"getopt" : ":",
"longopt" : "systems-uri",
"help" : "--systems-uri=[uri] Redfish Systems resource URI",
"required" : "0",
"shortdesc" : "Redfish Systems resource URI, i.e. /redfish/v1/Systems/System.Embedded.1",
"order": 1
}
def main():
atexit.register(atexit_handler)
device_opt = ["ipaddr", "login", "passwd", "redfish-uri", "systems-uri",
"ssl", "diag"]
define_new_opts()
opt = process_input(device_opt)
all_opt["ssl"]["default"] = "1"
options = check_input(device_opt, opt)
docs = {}
docs["shortdesc"] = "I/O Fencing agent for Redfish"
docs["longdesc"] = "fence_redfish is an I/O Fencing agent which can be used with \
Out-of-Band controllers that support Redfish APIs. These controllers provide remote \
access to control power on a server."
docs["vendorurl"] = "http://www.dmtf.org"
show_docs(options, docs)
run_delay(options)
##
## Operate the fencing device
####
# Disable insecure-certificate-warning message
if "--ssl-insecure" in opt:
import urllib3
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
# backwards compatibility for <ip>:<port>
if options["--ip"].count(":") == 1:
(options["--ip"], options["--ipport"]) = options["--ip"].split(":")
if "--systems-uri" not in opt:
# Systems URI not provided, find it
sysresult = find_systems_resource(options)
if sysresult['ret'] is False:
sys.exit(1)
else:
options["--systems-uri"] = sysresult["uri"]
reboot_fn = None
if options["--action"] == "diag":
# Diag is a special action that can't be verified so we will reuse reboot functionality
# to minimize impact on generic library
options["original-action"] = options["--action"]
options["--action"] = "reboot"
options["--method"] = "cycle"
reboot_fn = set_power_status
result = fence_action(None, options, set_power_status, get_power_status, None, reboot_fn)
sys.exit(result)
if __name__ == "__main__":
main()
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