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fence_aliyun.py
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fence_aliyun.py
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#!@PYTHON@ -tt
import sys, re
import logging
import atexit
import json
sys.path.append("@FENCEAGENTSLIBDIR@")
from fencing import *
from fencing import fail, fail_usage, EC_TIMED_OUT, run_delay
try:
from aliyunsdkcore import client
from aliyunsdkecs.request.v20140526.DescribeInstancesRequest import DescribeInstancesRequest
from aliyunsdkecs.request.v20140526.StartInstanceRequest import StartInstanceRequest
from aliyunsdkecs.request.v20140526.StopInstanceRequest import StopInstanceRequest
from aliyunsdkecs.request.v20140526.RebootInstanceRequest import RebootInstanceRequest
except ImportError:
pass
def _send_request(conn, request):
request.set_accept_format('json')
try:
response_str = conn.do_action_with_exception(request)
response_detail = json.loads(response_str)
logging.debug("_send_request reponse: %s" % response_detail)
return response_detail
except Exception as e:
fail_usage("Failed: _send_request failed: %s" % e)
def start_instance(conn, instance_id):
request = StartInstanceRequest()
request.set_InstanceId(instance_id)
_send_request(conn, request)
def stop_instance(conn, instance_id):
request = StopInstanceRequest()
request.set_InstanceId(instance_id)
request.set_ForceStop('true')
_send_request(conn, request)
def reboot_instance(conn, instance_id):
request = RebootInstanceRequest()
request.set_InstanceId(instance_id)
request.set_ForceStop('true')
_send_request(conn, request)
def get_status(conn, instance_id):
request = DescribeInstancesRequest()
request.set_InstanceIds(json.dumps([instance_id]))
response = _send_request(conn, request)
instance_status = None
if response is not None:
instance_list = response.get('Instances').get('Instance')
for item in instance_list:
instance_status = item.get('Status')
return instance_status
def get_nodes_list(conn, options):
result = {}
request = DescribeInstancesRequest()
request.set_PageSize(100)
response = _send_request(conn, request)
instance_status = None
if response is not None:
instance_list = response.get('Instances').get('Instance')
for item in instance_list:
instance_id = item.get('InstanceId')
instance_name = item.get('InstanceName')
result[instance_id] = (instance_name, None)
return result
def get_power_status(conn, options):
state = get_status(conn, options["--plug"])
if state == "Running":
status = "on"
elif state == "Stopped":
status = "off"
else:
status = "unknown"
logging.info("get_power_status: %s" % status)
return status
def set_power_status(conn, options):
logging.info("set_power_status: %s" % options["--action"])
if (options["--action"]=="off"):
stop_instance(conn, options["--plug"])
elif (options["--action"]=="on"):
start_instance(conn, options["--plug"])
elif (options["--action"]=="reboot"):
reboot_instance(conn, options["--plug"])
def define_new_opts():
all_opt["region"] = {
"getopt" : "r:",
"longopt" : "region",
"help" : "-r, --region=[name] Region, e.g. cn-hangzhou",
"shortdesc" : "Region.",
"required" : "0",
"order" : 2
}
all_opt["access_key"] = {
"getopt" : "a:",
"longopt" : "access-key",
"help" : "-a, --access-key=[name] Access Key",
"shortdesc" : "Access Key.",
"required" : "0",
"order" : 3
}
all_opt["secret_key"] = {
"getopt" : "s:",
"longopt" : "secret-key",
"help" : "-s, --secret-key=[name] Secret Key",
"shortdesc" : "Secret Key.",
"required" : "0",
"order" : 4
}
# Main agent method
def main():
conn = None
device_opt = ["port", "no_password", "region", "access_key", "secret_key"]
atexit.register(atexit_handler)
define_new_opts()
all_opt["power_timeout"]["default"] = "60"
options = check_input(device_opt, process_input(device_opt))
docs = {}
docs["shortdesc"] = "Fence agent for Aliyun (Aliyun Web Services)"
docs["longdesc"] = "fence_aliyun is an I/O Fencing agent for Aliyun"
docs["vendorurl"] = "http://www.aliyun.com"
show_docs(options, docs)
run_delay(options)
if "--region" in options and "--access-key" in options and "--secret-key" in options:
region = options["--region"]
access_key = options["--access-key"]
secret_key = options["--secret-key"]
conn = client.AcsClient(access_key, secret_key, region)
# Operate the fencing device
result = fence_action(conn, options, set_power_status, get_power_status, get_nodes_list)
sys.exit(result)
if __name__ == "__main__":
main()

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