def agent(num, input):
"""
A thread that will check resource availability and information
"""
logger.info("Agent %s starting" % num)
while True:
resource = input.get() # resource hostname
'''
Load node information from the testbed/facility DB (e.g. with SFA or local API)
We get from there the node status
'''
node = Query('Nodes').hostname(resource).execute().first()
if not node:
logger.info("Node disappeared : %s", (node.hostname))
if not node.enabled:
#logger.info("(%s) %s is not enabled" % (node.boot, node.hostname))
availability = 0
status = "disabled"
elif not node.is_running():
#logger.info(" (%s) %s is not running" % (node.boot, node.hostname))
availability = 0
status = "down"
else:
# if not r:
# print "+=> (%s) %s is not accessible" % (node.boot, node.hostname)
# availability = 0
# status = "no access"
# else :
# print "+=> (%s) %s is ok" % (node.boot, node.hostname)
availability = 1
status = "up"
#updates info about the node (testing)
# d.info_resource(node.hostname, {
# #'ipv4' : node.ip(4),
# 'ipv6' : node.ip(6),
# })
'''
Node access status: e.g. ssh, we try to do a setup on the node and report the result
We try also with nodes that are marked as disabled or not working anyway
'''
result = r.setup(resource)
print result
if not result['status'] :
logger.info("%s : Failed SSH access (%s)" % (resource, result['message']))
else :
logger.info("%s : Setup complete" % (resource))
s.resource({
"hostname": node.hostname,
"state": node.boot_state,
"access" : result
})
def sync():
logger = logging.getLogger(__name__)
''' DB connection '''
c = s.connect()
"""
This worker retrieves the list of resources from the testbed(s)
"""
while True:
logger.info("Retreiving resources %s", datetime.datetime.now())
''' PLE nodes '''
try:
nodes = Query('Nodes').ple().execute()
for node in nodes:
s.resource(c,
{
"testbed": "ple",
"hostname": node.hostname
}
)
except Exception as e:
logger.exception("Service does not seem to be available")
exit(1)
exit(0)
def availability(input):
"""
This worker will try to check for resource availability
"""
logger = logging.getLogger(__name__)
logger.info("Agent %s starting" % num)
while True:
resource = input.get()
node = Query('Nodes').hostname(resource).execute().first()
s.resource({
"hostname": node.hostname,
"bootstate": node.boot,
"status": status
})
pass
