forked from platypush/platypush
Implemented timestamp mark on messages to trigger message expiration logic in case something stays on the bus for longer than a minute
This commit is contained in:
parent
c10e882dd0
commit
948f3dc37d
6 changed files with 36 additions and 8 deletions
|
@ -12,7 +12,6 @@ import traceback
|
|||
|
||||
from threading import Thread
|
||||
|
||||
from .bus import Bus
|
||||
from .bus.redis import RedisBus
|
||||
from .config import Config
|
||||
from .context import register_backends
|
||||
|
|
|
@ -1,5 +1,6 @@
|
|||
import logging
|
||||
import threading
|
||||
import time
|
||||
|
||||
from queue import Queue
|
||||
|
||||
|
@ -12,6 +13,9 @@ logger = logging.getLogger(__name__)
|
|||
class Bus(object):
|
||||
""" Main local bus where the daemon will listen for new messages """
|
||||
|
||||
_MSG_EXPIRY_TIMEOUT = 60.0 # Consider a message on the bus as expired
|
||||
# after one minute without being picked up
|
||||
|
||||
def __init__(self, on_message=None):
|
||||
self.bus = Queue()
|
||||
self.on_message = on_message
|
||||
|
@ -45,6 +49,11 @@ class Bus(object):
|
|||
stop=False
|
||||
while not stop:
|
||||
msg = self.get()
|
||||
if msg.timestamp and time.time() - msg.timestamp > self._MSG_EXPIRY_TIMEOUT:
|
||||
logger.info('{} seconds old message on the bus expired, ignoring it: {}'
|
||||
.format(int(time.time()-msg.timestamp), msg))
|
||||
continue
|
||||
|
||||
self.on_message(msg)
|
||||
|
||||
if isinstance(msg, StopEvent) and msg.targets_me():
|
||||
|
|
|
@ -1,6 +1,7 @@
|
|||
import logging
|
||||
import inspect
|
||||
import json
|
||||
import time
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
|
||||
|
@ -17,7 +18,7 @@ class Message(object):
|
|||
return json.dumps({
|
||||
attr: getattr(self, attr)
|
||||
for attr in self.__dir__()
|
||||
if not attr.startswith('_')
|
||||
if (attr != '_timestamp' or not attr.startswith('_'))
|
||||
and not inspect.ismethod(getattr(self, attr))
|
||||
}).replace('\n', ' ')
|
||||
|
||||
|
@ -48,6 +49,10 @@ class Message(object):
|
|||
logger.warning('Invalid JSON message: {}'.format(msg))
|
||||
|
||||
assert isinstance(msg, dict)
|
||||
|
||||
if not '_timestamp' in msg:
|
||||
msg['_timestamp'] = time.time()
|
||||
|
||||
return msg
|
||||
|
||||
@classmethod
|
||||
|
|
|
@ -3,6 +3,7 @@ import json
|
|||
import random
|
||||
import re
|
||||
import threading
|
||||
import time
|
||||
|
||||
from datetime import date
|
||||
|
||||
|
@ -13,7 +14,7 @@ from platypush.utils import get_event_class_by_type
|
|||
class Event(Message):
|
||||
""" Event message class """
|
||||
|
||||
def __init__(self, target=None, origin=None, id=None, **kwargs):
|
||||
def __init__(self, target=None, origin=None, id=None, timestamp=None, **kwargs):
|
||||
"""
|
||||
Params:
|
||||
target -- Target node [String]
|
||||
|
@ -28,6 +29,7 @@ class Event(Message):
|
|||
self.type = '{}.{}'.format(self.__class__.__module__,
|
||||
self.__class__.__name__)
|
||||
self.args = kwargs
|
||||
self.timestamp = timestamp or time.time()
|
||||
|
||||
@classmethod
|
||||
def build(cls, msg):
|
||||
|
@ -42,6 +44,7 @@ class Event(Message):
|
|||
args['id'] = msg['id'] if 'id' in msg else cls._generate_id()
|
||||
args['target'] = msg['target'] if 'target' in msg else Config.get('device_id')
|
||||
args['origin'] = msg['origin'] if 'origin' in msg else Config.get('device_id')
|
||||
args['timestamp'] = msg['_timestamp'] if '_timestamp' in msg else time.time()
|
||||
return event_class(**args)
|
||||
|
||||
|
||||
|
@ -168,6 +171,7 @@ class Event(Message):
|
|||
'target' : self.target,
|
||||
'origin' : self.origin if hasattr(self, 'origin') else None,
|
||||
'id' : self.id if hasattr(self, 'id') else None,
|
||||
'_timestamp' : self.timestamp,
|
||||
'args' : {
|
||||
'type' : self.type,
|
||||
**args
|
||||
|
|
|
@ -4,6 +4,7 @@ import json
|
|||
import logging
|
||||
import random
|
||||
import re
|
||||
import time
|
||||
import traceback
|
||||
|
||||
from threading import Thread
|
||||
|
@ -21,16 +22,17 @@ class Request(Message):
|
|||
""" Request message class """
|
||||
|
||||
def __init__(self, target, action, origin=None, id=None, backend=None,
|
||||
args=None, token=None):
|
||||
args=None, token=None, timestamp=None):
|
||||
"""
|
||||
Params:
|
||||
target -- Target node [String]
|
||||
action -- Action to be executed (e.g. music.mpd.play) [String]
|
||||
origin -- Origin node [String]
|
||||
target -- Target node [Str]
|
||||
action -- Action to be executed (e.g. music.mpd.play) [Str]
|
||||
origin -- Origin node [Str]
|
||||
id -- Message ID, or None to get it auto-generated
|
||||
backend -- Backend connected to the request, where the response will be delivered
|
||||
args -- Additional arguments for the action [Dict]
|
||||
token -- Authorization token, if required on the server [Str]
|
||||
timestamp -- Message creation timestamp [Float]
|
||||
"""
|
||||
|
||||
self.id = id if id else self._generate_id()
|
||||
|
@ -40,6 +42,7 @@ class Request(Message):
|
|||
self.args = args if args else {}
|
||||
self.backend = backend
|
||||
self.token = token
|
||||
self.timestamp = timestamp or time.time()
|
||||
|
||||
@classmethod
|
||||
def build(cls, msg):
|
||||
|
@ -51,6 +54,7 @@ class Request(Message):
|
|||
}
|
||||
|
||||
args['id'] = msg['id'] if 'id' in msg else cls._generate_id()
|
||||
args['timestamp'] = msg['_timestamp'] if '_timestamp' in msg else time.time()
|
||||
if 'origin' in msg: args['origin'] = msg['origin']
|
||||
if 'token' in msg: args['token'] = msg['token']
|
||||
return cls(**args)
|
||||
|
@ -240,6 +244,7 @@ class Request(Message):
|
|||
'origin' : self.origin if hasattr(self, 'origin') else None,
|
||||
'id' : self.id if hasattr(self, 'id') else None,
|
||||
'token' : self.token if hasattr(self, 'token') else None,
|
||||
'_timestamp' : self.timestamp,
|
||||
})
|
||||
|
||||
|
||||
|
|
|
@ -1,11 +1,13 @@
|
|||
import json
|
||||
import time
|
||||
|
||||
from platypush.message import Message
|
||||
|
||||
class Response(Message):
|
||||
""" Response message class """
|
||||
|
||||
def __init__(self, target=None, origin=None, id=None, output=None, errors=[]):
|
||||
def __init__(self, target=None, origin=None, id=None, output=None, errors=[],
|
||||
timestamp=None):
|
||||
"""
|
||||
Params:
|
||||
target -- Target [String]
|
||||
|
@ -13,12 +15,14 @@ class Response(Message):
|
|||
output -- Output [String]
|
||||
errors -- Errors [List of strings or exceptions]
|
||||
id -- Message ID this response refers to
|
||||
timestamp -- Message timestamp [Float]
|
||||
"""
|
||||
|
||||
self.target = target
|
||||
self.output = self._parse_msg(output)
|
||||
self.errors = self._parse_msg(errors)
|
||||
self.origin = origin
|
||||
self.timestamp = timestamp or time.time()
|
||||
self.id = id
|
||||
|
||||
def is_error(self):
|
||||
|
@ -45,6 +49,7 @@ class Response(Message):
|
|||
'errors' : msg['response']['errors'],
|
||||
}
|
||||
|
||||
args['timestamp'] = msg['_timestamp'] if '_timestamp' in msg else time.time()
|
||||
if 'id' in msg: args['id'] = msg['id']
|
||||
if 'origin' in msg: args['origin'] = msg['origin']
|
||||
return cls(**args)
|
||||
|
@ -61,6 +66,7 @@ class Response(Message):
|
|||
'type' : 'response',
|
||||
'target' : self.target if hasattr(self, 'target') else None,
|
||||
'origin' : self.origin if hasattr(self, 'origin') else None,
|
||||
'_timestamp' : self.timestamp,
|
||||
'response' : {
|
||||
'output' : self.output,
|
||||
'errors' : self.errors,
|
||||
|
|
Loading…
Reference in a new issue