|
1
|
|
|
"""Module with Kytos Events.""" |
|
2
|
2 |
|
import json |
|
3
|
2 |
|
from datetime import datetime |
|
4
|
2 |
|
from uuid import uuid4 |
|
5
|
|
|
|
|
6
|
2 |
|
from kytos.core.helpers import now |
|
7
|
|
|
|
|
8
|
|
|
|
|
9
|
2 |
|
class KytosEvent: |
|
10
|
|
|
"""Base Event class. |
|
11
|
|
|
|
|
12
|
|
|
The event data will be passed in the `content` attribute, which should be a |
|
13
|
|
|
dictionary. |
|
14
|
|
|
""" |
|
15
|
|
|
|
|
16
|
2 |
|
def __init__(self, name=None, content=None): |
|
17
|
|
|
"""Create an event to be published. |
|
18
|
|
|
|
|
19
|
|
|
Args: |
|
20
|
|
|
name (string): The name of the event. You should prepend it with |
|
21
|
|
|
the name of the napp. |
|
22
|
|
|
content (dict): Dictionary with any extra data for the event. |
|
23
|
|
|
""" |
|
24
|
2 |
|
self.name = name |
|
25
|
2 |
|
self.content = content if content is not None else {} |
|
26
|
2 |
|
self.timestamp = now() |
|
27
|
2 |
|
self.reinjections = 0 |
|
28
|
|
|
|
|
29
|
|
|
# pylint: disable=invalid-name |
|
30
|
2 |
|
self.id = uuid4() |
|
31
|
|
|
# pylint: enable=invalid-name |
|
32
|
|
|
|
|
33
|
2 |
|
def __str__(self): |
|
34
|
2 |
|
return self.name |
|
35
|
|
|
|
|
36
|
2 |
|
def __repr__(self): |
|
37
|
2 |
|
return f"KytosEvent({self.name!r}, {self.content!r})" |
|
38
|
|
|
|
|
39
|
2 |
|
def as_dict(self): |
|
40
|
|
|
"""Return KytosEvent as a dict.""" |
|
41
|
2 |
|
return {'id': str(self.id), 'name': self.name, 'content': self.content, |
|
42
|
|
|
'timestamp': self.timestamp, 'reinjections': self.reinjections} |
|
43
|
|
|
|
|
44
|
2 |
|
def as_json(self): |
|
45
|
|
|
"""Return KytosEvent as json.""" |
|
46
|
2 |
|
as_dict = self.as_dict() |
|
47
|
2 |
|
timestamp = datetime.strftime(as_dict['timestamp'], |
|
48
|
|
|
'%Y-%m-%dT%H:%M:%S') |
|
49
|
2 |
|
as_dict['timestamp'] = timestamp |
|
50
|
2 |
|
try: |
|
51
|
2 |
|
return json.dumps(as_dict) |
|
52
|
|
|
except TypeError: |
|
53
|
|
|
as_dict['content'] = str(as_dict['content']) |
|
54
|
|
|
return json.dumps(as_dict) |
|
55
|
|
|
|
|
56
|
2 |
|
@property |
|
57
|
|
|
def destination(self): |
|
58
|
|
|
"""Return the destination of KytosEvent.""" |
|
59
|
2 |
|
return self.content.get('destination') |
|
60
|
|
|
|
|
61
|
2 |
|
def set_destination(self, destination): |
|
62
|
|
|
"""Update the destination of KytosEvent. |
|
63
|
|
|
|
|
64
|
|
|
Args: |
|
65
|
|
|
destination (string): destination of KytosEvent. |
|
66
|
|
|
""" |
|
67
|
2 |
|
self.content['destination'] = destination |
|
68
|
|
|
|
|
69
|
2 |
|
@property |
|
70
|
|
|
def source(self): |
|
71
|
|
|
"""Return the source of KytosEvent.""" |
|
72
|
2 |
|
return self.content.get('source') |
|
73
|
|
|
|
|
74
|
2 |
|
def set_source(self, source): |
|
75
|
|
|
"""Update the source of KytosEvent. |
|
76
|
|
|
|
|
77
|
|
|
Args: |
|
78
|
|
|
source (string): source of KytosEvent. |
|
79
|
|
|
""" |
|
80
|
2 |
|
self.content['source'] = source |
|
81
|
|
|
|
|
82
|
2 |
|
@property |
|
83
|
|
|
def message(self): |
|
84
|
|
|
"""Return the message carried by the event if it exists. |
|
85
|
|
|
|
|
86
|
|
|
If there is any OpenFlow message on the event it'll be stored on |
|
87
|
|
|
the 'message' key of the 'content' attribute. |
|
88
|
|
|
|
|
89
|
|
|
Returns: |
|
90
|
|
|
A python-openflow message instance if it exists, None otherwise. |
|
91
|
|
|
|
|
92
|
|
|
""" |
|
93
|
2 |
|
try: |
|
94
|
2 |
|
return self.content['message'] |
|
95
|
2 |
|
except KeyError: |
|
96
|
|
|
return None |
|
97
|
|
|
|
kytos-ng /
kytos
