def allocate_vdu_task(ks_path, event_id, cloud_account, request_msg):
response_xpath = ks_path.to_xpath(
RwResourceMgrYang.get_schema()) + "/resource-info"
schema = RwResourceMgrYang.VDUEventData().schema()
pathentry = schema.keyspec_to_entry(ks_path)
try:
response_info = yield from self._parent.allocate_virtual_compute(
event_id,
cloud_account,
request_msg,
)
except Exception as e:
self._log.error(
"Encountered exception : %s while creating virtual compute",
str(e))
response_info = RwResourceMgrYang.VDUEventData_ResourceInfo()
response_info.resource_state = 'failed'
yield from self._dts.query_update(response_xpath,
rwdts.XactFlag.ADVISE,
response_info)
else:
if response_info.resource_state == 'failed' or response_info.resource_state == 'active':
self._log.info(
"Virtual compute create task completed. Publishing VDU info: %s at path: %s",
response_info, response_xpath)
yield from self._dts.query_update(response_xpath,
rwdts.XactFlag.ADVISE,
response_info)
else:
asyncio.ensure_future(monitor_vdu_state(
response_xpath, pathentry),
loop=self._loop)
def monitor_vdu_state(response_xpath, pathentry):
self._log.info("Initiating VDU state monitoring for xpath: %s ",
response_xpath)
loop_cnt = 180
for i in range(loop_cnt):
self._log.debug(
"VDU state monitoring for xpath: %s. Sleeping for 1 second",
response_xpath)
yield from asyncio.sleep(1, loop=self._loop)
try:
response_info = yield from self._parent.read_virtual_compute_info(
pathentry.key00.event_id)
except Exception as e:
self._log.info(
"VDU state monitoring: Received exception %s in VDU state monitoring for %s. Aborting monitoring",
str(e), response_xpath)
response_info = RwResourceMgrYang.VDUEventData_ResourceInfo(
)
response_info.resource_state = 'failed'
yield from self._dts.query_update(response_xpath,
rwdts.XactFlag.ADVISE,
response_info)
else:
if response_info.resource_state == 'active' or response_info.resource_state == 'failed':
self._log.info(
"VDU state monitoring: VDU reached terminal state. Publishing VDU info: %s at path: %s",
response_info, response_xpath)
yield from self._dts.query_update(
response_xpath, rwdts.XactFlag.ADVISE,
response_info)
return
else:
### End of loop. This is only possible if VDU did not reach active state
self._log.info(
"VDU state monitoring: VDU at xpath :{} did not reached active state in {} seconds. Aborting monitoring"
.format(response_xpath, loop_cnt))
response_info = RwResourceMgrYang.VDUEventData_ResourceInfo()
response_info.resource_state = 'failed'
yield from self._dts.query_update(response_xpath,
rwdts.XactFlag.ADVISE,
response_info)
return
def on_vdu_request_prepare(xact_info, action, ks_path, request_msg):
self._log.debug(
"Received vdu on_prepare callback (xact_info: %s, action: %s): %s",
xact_info, action, request_msg)
response_xpath = ks_path.to_xpath(
RwResourceMgrYang.get_schema()) + "/resource-info"
schema = RwResourceMgrYang.VDUEventData().schema()
pathentry = schema.keyspec_to_entry(ks_path)
if action == rwdts.QueryAction.CREATE:
response_info = RwResourceMgrYang.VDUEventData_ResourceInfo()
response_info.resource_state = 'pending'
request_msg.resource_info = response_info
self.create_record_dts(
self._vdu_reg, None,
ks_path.to_xpath(RwResourceMgrYang.get_schema()),
request_msg)
asyncio.ensure_future(allocate_vdu_task(
ks_path, pathentry.key00.event_id,
request_msg.cloud_account, request_msg.request_info),
loop=self._loop)
elif action == rwdts.QueryAction.DELETE:
response_info = None
yield from self._parent.release_virtual_compute(
pathentry.key00.event_id)
self.delete_record_dts(
self._vdu_reg, None,
ks_path.to_xpath(RwResourceMgrYang.get_schema()))
elif action == rwdts.QueryAction.READ:
response_info = yield from self._parent.read_virtual_compute_info(
pathentry.key00.event_id)
else:
raise ValueError(
"Only create/delete actions available. Received action: %s"
% (action))
self._log.debug("Responding with VDUInfo at xpath %s: %s",
response_xpath, response_info)
xact_info.respond_xpath(rwdts.XactRspCode.ACK, response_xpath,
response_info)
def monitor_vdu_state(response_xpath, pathentry):
self._log.info("Initiating VDU state monitoring for xpath: %s ", response_xpath)
loop_cnt = 120
while loop_cnt > 0:
self._log.debug("VDU state monitoring: Sleeping for 1 second ")
yield from asyncio.sleep(1, loop = self._loop)
try:
response_info = self._read_virtual_compute(
pathentry.key00.event_id
)
except Exception as e:
self._log.error(
"VDU state monitoring: Received exception %s "
"in VDU state monitoring for %s. Aborting monitoring",
str(e), response_xpath
)
raise
if response_info.resource_state == 'active' or response_info.resource_state == 'failed':
self._log.info(
"VDU state monitoring: VDU reached terminal state."
"Publishing VDU info: %s at path: %s",
response_info, response_xpath
)
yield from self._dts.query_update(response_xpath,
rwdts.XactFlag.ADVISE,
response_info)
return
else:
loop_cnt -= 1
### End of while loop. This is only possible if VDU did not reach active state
self._log.info("VDU state monitoring: VDU at xpath :%s did not reached active state in 120 seconds. Aborting monitoring",
response_xpath)
response_info = RwResourceMgrYang.VDUEventData_ResourceInfo()
response_info.resource_state = 'failed'
yield from self._dts.query_update(response_xpath,
rwdts.XactFlag.ADVISE,
response_info)
return