platypush/notifier.py

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#!/usr/bin/env python
import functools
import importlib
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import os
import logging
import json
import socket
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import subprocess
import sys
import time
import websocket
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import yaml
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from threading import Thread
from getopt import getopt
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__author__ = 'Fabio Manganiello <info@fabiomanganiello.com>'
#-----------#
curdir = os.path.dirname(os.path.realpath(__file__))
lib_dir = curdir + os.sep + 'lib'
sys.path.insert(0, lib_dir)
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config_file = curdir + os.sep + 'config.yaml'
config = {}
with open(config_file,'r') as f:
config = yaml.load(f)
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API_KEY = config['pushbullet_token']
DEVICE_ID = config['device_id'] \
if 'device_id' in config else socket.gethostname()
DEBUG = config['debug'] if 'debug' in config else False
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modules = {}
plugins = {}
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def on_open(ws):
logging.info('Connection opened')
def on_close(ws):
logging.info('Connection closed')
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def on_error(ws, error):
logging.error(error)
def _init_plugin(plugin, reload=False):
module_name = 'plugins.{}'.format(plugin)
if module_name not in modules or reload:
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try:
modules[module_name] = importlib.import_module(module_name)
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except ModuleNotFoundError as e:
logging.warn('No such plugin: {}'.format(plugin))
raise RuntimeError(e)
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# e.g. plugins.music.mpd main class: MusicMpdPlugin
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cls_name = functools.reduce(
lambda a,b: a.title() + b.title(),
(plugin.title().split('.'))
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) + 'Plugin'
if cls_name not in plugins or reload:
try:
plugins[cls_name] = getattr(modules[module_name], cls_name)()
except AttributeError as e:
logging.warn('No such class in {}: {}'.format(
module_name, cls_name))
raise RuntimeError(e)
return plugins[cls_name]
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def _exec_func(body, retry=True):
try:
logging.info('Received push addressed to me: {}'.format(body))
args = body['args'] if 'args' in body else {}
if 'plugin' not in body:
logging.warn('No plugin specified')
return
plugin_name = body['plugin']
try:
plugin = _init_plugin(plugin_name)
except RuntimeError as e: # Module/class not found
return
ret = plugin.run(args)
out = None
err = None
if isinstance(ret, list):
out = ret[0]
err = ret[1] if len(ret) > 1 else None
elif ret is not None:
out = ret
if out:
logging.info('Command output: {}'.format(out))
if err:
logging.warn('Command error: {}'.format(err))
except Exception as e:
logging.exception(e)
if retry:
logging.info('Reloading plugin {} and retrying'.format(plugin_name))
_init_plugin(plugin_name, reload=True)
_exec_func(body, retry=False)
def _on_push(ws, data):
data = json.loads(data)
if data['type'] == 'tickle' and data['subtype'] == 'push':
logging.debug('Received push tickle')
return
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if data['type'] != 'push':
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return # Not a push notification
push = data['push']
logging.debug('Received push: {}'.format(push))
if 'body' not in push:
return
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body = push['body']
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try:
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body = json.loads(body)
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except ValueError as e:
return
if 'target' not in body or body['target'] != DEVICE_ID:
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return # Not for me
if 'plugin' not in body:
return # No plugin specified
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thread = Thread(target=_exec_func, args=(body,))
thread.start()
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def on_push(ws, data):
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try:
_on_push(ws, data)
except Exception as e:
on_error(ws, e)
def main():
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DEBUG = False
config_file = curdir + os.sep + 'config.yaml'
optlist, args = getopt(sys.argv[1:], 'vh')
for opt, arg in optlist:
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if opt == '-c':
config_file = arg
if opt == '-v':
DEBUG = True
elif opt == '-h':
print('''
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Usage: {} [-v] [-h] [-c <config_file>]
-v Enable debug mode
-h Show this help
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-c Path to the configuration file (default: ./config.yaml)
'''.format(sys.argv[0]))
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return
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config = {}
with open(config_file,'r') as f:
config = yaml.load(f)
API_KEY = config['pushbullet_token']
DEVICE_ID = config['device_id'] \
if 'device_id' in config else socket.gethostname()
if 'debug' in config:
DEBUG = config['debug']
if DEBUG:
logging.basicConfig(level=logging.DEBUG)
websocket.enableTrace(True)
else:
logging.basicConfig(level=logging.INFO)
ws = websocket.WebSocketApp('wss://stream.pushbullet.com/websocket/' +
API_KEY,
on_message = on_push,
on_error = on_error,
on_close = on_close)
ws.on_open = on_open
ws.run_forever()
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if __name__ == '__main__':
main()
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