|
1
|
|
|
"""Module responsible to handle schedulers.""" |
|
2
|
2 |
|
from uuid import uuid4 |
|
3
|
|
|
|
|
4
|
2 |
|
from apscheduler.jobstores.base import JobLookupError |
|
5
|
2 |
|
from apscheduler.schedulers.background import BackgroundScheduler |
|
6
|
2 |
|
from apscheduler.triggers.cron import CronTrigger |
|
7
|
2 |
|
from pytz import utc |
|
8
|
|
|
|
|
9
|
2 |
|
from kytos.core import log |
|
10
|
|
|
|
|
11
|
|
|
|
|
12
|
2 |
|
class CircuitSchedule: |
|
13
|
|
|
"""Schedule events.""" |
|
14
|
|
|
|
|
15
|
2 |
|
def __init__(self, **kwargs): |
|
16
|
|
|
"""Create a CircuitSchedule object.""" |
|
17
|
2 |
|
self._id = kwargs.get('id', uuid4().hex) |
|
18
|
2 |
|
self.date = kwargs.get('date', None) |
|
19
|
|
|
# The minimum number of seconds to wait between retries |
|
20
|
2 |
|
self.interval = kwargs.get('interval', None) |
|
21
|
|
|
# Frequency uses Cron format. Ex: "* * * * * *" |
|
22
|
2 |
|
self.frequency = kwargs.get('frequency', None) |
|
23
|
2 |
|
self.action = kwargs.get('action', 'create') |
|
24
|
|
|
|
|
25
|
2 |
|
@property |
|
26
|
|
|
def id(self): # pylint: disable=invalid-name |
|
27
|
|
|
"""Return this EVC's ID.""" |
|
28
|
2 |
|
return self._id |
|
29
|
|
|
|
|
30
|
2 |
|
@id.setter |
|
31
|
|
|
def id(self, value): # pylint: disable=invalid-name |
|
32
|
|
|
"""Set this EVC's ID.""" |
|
33
|
2 |
|
self._id = value |
|
34
|
|
|
|
|
35
|
2 |
|
def as_dict(self): |
|
36
|
|
|
"""Return a dictionary representing an circuit schedule object.""" |
|
37
|
2 |
|
circuit_scheduler_dict = {'id': self.id, 'action': self.action} |
|
38
|
|
|
|
|
39
|
2 |
|
if self.date: |
|
40
|
|
|
circuit_scheduler_dict['date'] = self.date |
|
41
|
2 |
|
if self.frequency: |
|
42
|
2 |
|
circuit_scheduler_dict['frequency'] = self.frequency |
|
43
|
2 |
|
if self.interval: |
|
44
|
2 |
|
circuit_scheduler_dict['interval'] = self.interval |
|
45
|
|
|
|
|
46
|
2 |
|
return circuit_scheduler_dict |
|
47
|
|
|
|
|
48
|
2 |
|
@classmethod |
|
49
|
|
|
def from_dict(cls, data): |
|
50
|
|
|
"""Return a CircuitSchedule object from dict.""" |
|
51
|
2 |
|
return cls(**data) |
|
52
|
|
|
|
|
53
|
|
|
|
|
54
|
2 |
|
class Scheduler: |
|
55
|
|
|
"""Class to schedule the circuits rules.""" |
|
56
|
|
|
|
|
57
|
2 |
|
def __init__(self): |
|
58
|
|
|
"""Create a new schedule structure.""" |
|
59
|
2 |
|
self.scheduler = BackgroundScheduler(timezone=utc) |
|
60
|
2 |
|
self.scheduler.start() |
|
61
|
|
|
|
|
62
|
2 |
|
def shutdown(self): |
|
63
|
|
|
"""Shutdown the scheduler.""" |
|
64
|
2 |
|
self.scheduler.shutdown(wait=False) |
|
65
|
|
|
|
|
66
|
2 |
|
def add(self, circuit): |
|
67
|
|
|
""" |
|
68
|
|
|
Add all circuit_scheduler from specific circuit. |
|
69
|
|
|
|
|
70
|
|
|
Args: |
|
71
|
|
|
circuit (napps.kytos.mef_eline.models.EVCBase): EVC circuit |
|
72
|
|
|
""" |
|
73
|
2 |
|
for circuit_scheduler in circuit.circuit_scheduler: |
|
74
|
2 |
|
self.add_circuit_job(circuit, circuit_scheduler) |
|
75
|
|
|
|
|
76
|
2 |
|
def remove(self, circuit): |
|
77
|
|
|
"""Remove all scheduler from a circuit.""" |
|
78
|
|
|
for job in circuit.circuit_scheduler: |
|
79
|
|
|
self.cancel_job(job.id) |
|
80
|
|
|
|
|
81
|
2 |
|
def add_circuit_job(self, circuit, circuit_scheduler): |
|
82
|
|
|
""" |
|
83
|
|
|
Prepare the Circuit data to be added to the Scheduler. |
|
84
|
|
|
|
|
85
|
|
|
:param circuit(napps.kytos.mef_eline.models.EVCBase): EVC circuit |
|
86
|
|
|
:param circuit_scheduler (CircuitSchedule): Circuit schedule data |
|
87
|
|
|
:return: |
|
88
|
|
|
""" |
|
89
|
2 |
|
job_call = None |
|
90
|
2 |
|
if circuit_scheduler.action == 'create': |
|
91
|
2 |
|
job_call = circuit.deploy |
|
92
|
2 |
|
elif circuit_scheduler.action == 'remove': |
|
93
|
2 |
|
job_call = circuit.remove |
|
94
|
|
|
|
|
95
|
2 |
|
data = {'id': circuit_scheduler.id} |
|
96
|
2 |
|
if circuit_scheduler.date: |
|
97
|
2 |
|
data.update({'run_date': circuit_scheduler.date}) |
|
98
|
|
|
else: |
|
99
|
2 |
|
data.update({'start_date': circuit.start_date, |
|
100
|
|
|
'end_date': circuit.end_date}) |
|
101
|
|
|
|
|
102
|
2 |
|
if circuit_scheduler.interval: |
|
103
|
2 |
|
data.update(circuit_scheduler.interval) |
|
104
|
|
|
|
|
105
|
2 |
|
self.add_job(circuit_scheduler, job_call, data) |
|
106
|
|
|
|
|
107
|
2 |
|
def add_job(self, circuit_scheduler, job_call, data): |
|
108
|
|
|
""" |
|
109
|
|
|
Add a specific cron job to the scheduler. |
|
110
|
|
|
|
|
111
|
|
|
Args: |
|
112
|
|
|
circuit_scheduler: CircuitSchedule object |
|
113
|
|
|
job_call: function to be called by the job |
|
114
|
|
|
data: Dict to pass to the job_call as parameter |
|
115
|
|
|
if job_call is a date, the template is like: |
|
116
|
|
|
{'id': <ID>, 'run_date': date } or |
|
117
|
|
|
{'id': <ID>, 'start_date': date, 'end_date': date } |
|
118
|
|
|
if job_call is an interval, the template is like: |
|
119
|
|
|
{ 'id': <ID>, |
|
120
|
|
|
'hours': 2, |
|
121
|
|
|
'minutes': 3 |
|
122
|
|
|
} |
|
123
|
|
|
if job_call is frequency, the template is the cron format. |
|
124
|
|
|
""" |
|
125
|
2 |
|
if circuit_scheduler.date: |
|
126
|
2 |
|
self.scheduler.add_job(job_call, 'date', **data) |
|
127
|
|
|
|
|
128
|
2 |
|
elif circuit_scheduler.interval: |
|
129
|
2 |
|
self.scheduler.add_job(job_call, 'interval', **data) |
|
130
|
|
|
|
|
131
|
2 |
|
elif circuit_scheduler.frequency: |
|
132
|
2 |
|
cron = CronTrigger.from_crontab(circuit_scheduler.frequency, |
|
133
|
|
|
timezone=utc) |
|
134
|
2 |
|
self.scheduler.add_job(job_call, cron, **data) |
|
135
|
|
|
|
|
136
|
2 |
|
def cancel_job(self, circuit_scheduler_id): |
|
137
|
|
|
"""Cancel a specific job from scheduler.""" |
|
138
|
2 |
|
try: |
|
139
|
2 |
|
self.scheduler.remove_job(circuit_scheduler_id) |
|
140
|
|
|
except JobLookupError as job_error: |
|
141
|
|
|
# Job was not found... Maybe someone already remove it. |
|
142
|
|
|
log.error("Scheduler error cancelling job. %s" % job_error) |
|
143
|
|
|
|
kytos /
mef_eline
