Question

我尝试为发送新通知时立即替换的亮度控件设置通知。我设法创建了一个测试，以便在同一个python进程/脚本中运行，但如果运行新进程，则不会替换通知。

#!/usr/bin/env python

import dbus
import sys
import os
import time

item = 'org.freedesktop.Notifications'
path = '/org/freedesktop/Notifications'
interface = 'org.freedesktop.Notifications'
app_name = 'dbus test'
title = 'dbus test'
timeout = 5000   # Use seconds x 1000

notify_id_file = '/tmp/dbus-id-{}'.format(os.getenv('USER'))

try:
    with open(notify_id_file, 'r') as f:
        notify_id = dbus.UInt32(f.read())
except:
    notify_id = dbus.UInt32(0)

icon = '/home/shane/.icons/Surfn/32/notifications/notification-display-brightness-full.svg'
hint = {'type': 'int', 'name': 'value', 'value': int(sys.argv[1])}

bus = dbus.SessionBus(private=False)
notif = bus.get_object(item, path)
notify = dbus.Interface(notif, interface)

notify_id = notify.Notify(app_name, notify_id, icon, title, '', '', hint, timeout)

with open(notify_id_file, 'w') as f:
    f.write(str(notify_id))

# Emulating second call, works from within same process, not from another

time.sleep(1)


bus = dbus.SessionBus(private=False)
notif = bus.get_object(item, path)
notify = dbus.Interface(notif, interface)

with open(notify_id_file, 'r') as f:
    notify_id = dbus.UInt32(f.read())

hint = {'type': 'int', 'name': 'value', 'value': int(sys.argv[1]) + 20}

notify_id = notify.Notify(app_name, notify_id, icon, title, '', '', hint, timeout)

with open(notify_id_file, 'w') as f:
    f.write(str(notify_id))

我无法看到我做错了什么，特别是看到它在同一个过程中都有效。它几乎就像dbus实际上并不是跨进程进行通信，但是进程有自己的私有连接吗？

如果它很重要，我会使用：

python 3.6.4
dbus 1.12.4
python-dbus 1.2.6
notify-osd 0.9.35（使用可自定义的leolik分支）

这都是在linux linux上的i3下。

使用dbus-python替换进程间通知

0 个答案: