63 lines
1.7 KiB
Python
63 lines
1.7 KiB
Python
import json
|
|
import random
|
|
|
|
from platypush.message import Message
|
|
|
|
class Request(Message):
|
|
""" Request message class """
|
|
|
|
def __init__(self, target, action, origin=None, id=None, args={}):
|
|
"""
|
|
Params:
|
|
target -- Target node [String]
|
|
action -- Action to be executed (e.g. music.mpd.play) [String]
|
|
origin -- Origin node [String]
|
|
id -- Message ID, or None to get it auto-generated
|
|
args -- Additional arguments for the action [Dict]
|
|
"""
|
|
|
|
self.id = id if id else self._generate_id()
|
|
self.target = target
|
|
self.action = action
|
|
self.origin = origin
|
|
self.args = args
|
|
|
|
@classmethod
|
|
def build(cls, msg):
|
|
msg = super().parse(msg)
|
|
args = {
|
|
'target' : msg['target'],
|
|
'action' : msg['action'],
|
|
'args' : msg['args'] if 'args' in msg else {},
|
|
}
|
|
|
|
args['id'] = msg['id'] if 'id' in msg else cls._generate_id()
|
|
if 'origin' in msg: args['origin'] = msg['origin']
|
|
return cls(**args)
|
|
|
|
@staticmethod
|
|
def _generate_id():
|
|
id = ''
|
|
for i in range(0,16):
|
|
id += '%.2x' % random.randint(0, 255)
|
|
return id
|
|
|
|
def __str__(self):
|
|
"""
|
|
Overrides the str() operator and converts
|
|
the message into a UTF-8 JSON string
|
|
"""
|
|
|
|
return json.dumps({
|
|
'type' : 'request',
|
|
'target' : self.target,
|
|
'action' : self.action,
|
|
'args' : self.args,
|
|
'origin' : self.origin if hasattr(self, 'origin') else None,
|
|
'id' : self.id if hasattr(self, 'id') else None,
|
|
})
|
|
|
|
|
|
# vim:sw=4:ts=4:et:
|
|
|