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#!/usr/bin/env python3
import os
import json
import copy
import random
import requests
import uuid
import time
from datetime import datetime
def luck(n=2):
""" gives 1 chance out of n (default: 2) to return True """
assert n > 1
return bool(random.randint(0, n-1))
def now_dmaap_timestamp():
return str(datetime.now().timestamp()).replace(".","")[:13]
def now_notification_time():
return datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f+00:00")
CONTROL_LOOP_NAMES = [
'CL-vCPE-d925ed73',
'CL-vCPE-37b1c91e',
'CL-vCPE-c2597657',
'CL-vCPE-a11318ba',
'CL-vCPE-5321c558',
]
TEMPLATES = {
'event_abated' :'event_abated.json',
'event_onset' :'event_onset.json',
'notification_active' :'notification_active.json',
'notification_final_failed' :'notification_final_failed.json',
'notification_final_open' :'notification_final_open.json',
'notification_final_success' :'notification_final_success.json',
'notification_operation_failure' :'notification_operation_failure.json',
'notification_operation' :'notification_operation.json',
'notification_operation_success' :'notification_operation_success.json',
'notification_rejected_disabled' :'notification_rejected_disabled.json',
'notification_rejected_missing' :'notification_rejected_missing.json',
}
ERROR_MESSAGES = [
('APPC', 'APPC1 : timeout on restart','RESTART'),
('APPC', 'APPC2 : cannot restart','RESTART'),
('SO', 'SO1 : scale up failed', 'SCALEUP'),
('SO', 'SO2 : scale down failed', 'SCALEDOWN'),
]
for key in TEMPLATES:
with open(TEMPLATES[key]) as f:
content = f.read()
TEMPLATES[key] = json.loads(content)
class DMaaPMessage(dict):
dmaap_host_url = "http://dmaap.host.url:9200/"
dmaap_username = None
dmaap_password = None
@classmethod
def from_template(cls, tmpl, **kwargs):
obj = cls()
obj.update(copy.deepcopy(TEMPLATES[tmpl]))
for keys,value in kwargs.items():
current_node = obj
keys = keys.split(".")
key = keys[0]
for i in range(len(keys) - 1):
current_node = current_node[keys[i]]
key = keys[i]
current_node[key] = value
return obj
def publish(self, topic):
url = "%s/events/%s" % (self.dmaap_host_url, topic)
auth = None
if self.dmaap_username and self.dmaap_password:
auth = (self.dmaap_username, self.dmaap_password)
response = requests.post(url, data=json.dumps(self), auth=auth)
return response.status_code
class Event(DMaaPMessage):
topic = "DCAE-CL-EVENT"
@staticmethod
def abated(**kwargs):
return Event.from_template('event_abated', **kwargs)
@staticmethod
def onset(**kwargs):
return Event.from_template('event_onset', **kwargs)
def publish(self):
return super().publish(self.topic)
class Notification(DMaaPMessage):
topic = "POLICY-CL-MGT"
@classmethod
def from_template(cls, tmpl, **kwargs):
kwargs['notificationTime'] = now_notification_time()
return super().from_template(tmpl, **kwargs)
@staticmethod
def active(**kwargs):
return Notification.from_template('notification_active', **kwargs)
@staticmethod
def final(**kwargs):
class FinalNotification(Notification):
@staticmethod
def success(**kwargs):
return FinalNotification.from_template('notification_final_success', **kwargs)
@staticmethod
def failed(**kwargs):
msg = FinalNotification.from_template('notification_final_failed', **kwargs)
error = ERROR_MESSAGES[random.randint(0, len(ERROR_MESSAGES) - 1)]
h = msg['history'][-1]
h['actor'],h['message'],h['operation'] = error[0],error[1],error[2]
return msg
@staticmethod
def open(**kwargs):
return FinalNotification.from_template('notification_final_open', **kwargs)
return FinalNotification
@staticmethod
def operation(**kwargs):
class OperationNotification(Notification):
@staticmethod
def success(**kwargs):
return OperationNotification.from_template('notification_operation_success', **kwargs)
@staticmethod
def failure(**kwargs):
return OperationNotification.from_template('notification_operation_failure', **kwargs)
return OperationNotification.from_template('notification_operation', **kwargs)
@staticmethod
def rejected(**kwargs):
class RejectedNotification(Notification):
@staticmethod
def disabled(**kwargs):
return RejectedNotification.from_template('notification_rejected_disabled', **kwargs)
@staticmethod
def missing_fields(**kwargs):
return RejectedNotification.from_template('notification_rejected_missing', **kwargs)
return RejectedNotification
def publish(self):
return super().publish(self.topic)
class CLStatus(object):
def __init__(self, dmaap_url=None,
missing=None, disabled=None, op_failure=None):
self._stopped = False
def maybe(thing, ):
if thing is None:
thing = not luck(10)
return thing
self._missing = maybe(missing)
self._disabled = maybe(disabled)
self._op_failure = maybe(op_failure)
self._config = dict(
requestID=str(uuid.uuid4()),
closedLoopControlName=CONTROL_LOOP_NAMES[random.randint(0, len(CONTROL_LOOP_NAMES) - 1)]
)
def __iter__(self):
return next(self)
def __next__(self):
if self._stopped:
raise StopIteration()
config = self._config
config.update(dict(closedLoopAlarmStart=now_dmaap_timestamp()))
yield Event.onset(**config)
if self._missing:
self._stopped = True
yield Notification.rejected().missing_fields(**config)
raise StopIteration()
elif self._disabled:
self._stopped = True
yield Notification.rejected().disabled(**config)
raise StopIteration()
yield Notification.active(**config)
yield Notification.operation(**config)
config['closedLoopAlarmEnd'] = now_dmaap_timestamp()
if self._op_failure:
yield Notification.operation().failure(**config)
self._stopped = True
yield Notification.final().failed(**config)
else:
yield Notification.operation().success(**config)
yield Event.abated(**config)
self._stopped = True
yield Notification.final().success(**config)
raise StopIteration()
def print_usage():
print("""
./ds_mocker.py <DMAAP_URL> <EVENT_TOPIC> [NOTIFICATION_TOPIC [REQUEST_TOPIC]]
""")
exit()
def push(test_datas):
for current_i, status in enumerate(test_datas):
time.sleep(random.randint(0,3))
for s in status:
# print(s)
status_code = s.publish()
if status_code != 200:
print("Error when publishing : status_code={}".format(status_code))
exit(1)
time.sleep(random.randint(0,3))
print("%03d,missing:%5s,disabled:%5s,op_failure:%5s - %s" % (current_i, status._missing, status._disabled, status._op_failure, status._config))
def generate_dataset_1():
test_datas = [CLStatus(missing=False, disabled=False, op_failure=False) for i in range(300)] \
+ [CLStatus(missing=True, disabled=False, op_failure=False) for i in range(5)] \
+ [CLStatus(missing=False, disabled=True, op_failure=False) for i in range(6)] \
+ [CLStatus(missing=False, disabled=False, op_failure=True) for i in range(12)]
random.shuffle(test_datas)
return test_datas
def generate_error_dataset_1():
test_datas = [CLStatus(missing=False, disabled=False, op_failure=True) for i in range(60)]
random.shuffle(test_datas)
return test_datas
DATASETS = {
'dataset_1': generate_dataset_1,
'op_failure_1': generate_error_dataset_1,
}
if __name__ == "__main__":
import sys
if len(sys.argv) < 3:
print_usage()
DMaaPMessage.dmaap_host_url = sys.argv[1]
Event.topic = sys.argv[2]
Notification.topic = len(sys.argv) > 3 and sys.argv[3] or sys.argv[2]
# Request.topic = len(sys.argv) > 4 or Notification.topic
#push(DATASETS['op_failure_1']())
push(DATASETS['dataset_1']())
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