Progresso da notificação na bandeja da linha de comando

Question

OpenSuse 42.1 + KDE 5

Eu uso o kdialog no meu script para me informar sobre o início / término do processo

#!/bin/sh
while inotifywait -r -e modify -e create -e delete ~/www/gruz.org.uab/www/; do
    kdialog --passivepopup 'Started' --title 'UNISON update';
    unison   -ui text -auto -batch gruz.org.uab
    kdialog --passivepopup 'Finished' --title 'UNISON update';
done

Mas os pop-ups cobrem alguma área de exibição e quero substituí-los por um indicador de progresso na bandeja do sistema, como ao copiar um arquivo.

link

Eu li sobre algo como qdbus org.kde.JobViewServer.requestView , mas não consegui implementá-lo devido à falta de conhecimento.

Por favor, forneça um exemplo de linha de comando (ou outro equivalente) para

• pré-forma um processo
• indicador inicial na bandeja
• indicador de parada no acabamento

Obrigado, querido All

    

Answer 1

O problema com o uso de qdbus org.kde.JobViewServer.requestView de um script de shell é que ele foi projetado para excluir a notificação quando o cliente D-Bus solicitante sair, portanto, ferramentas como dbus-send e qdbus não funcionarão porque saem imediatamente após chamando requestView .

Se você usar qdbusviewer para criar uma solicitação, poderá brincar com chamadas como essas e isso funcionará, mas não acredito que você encontre algo pronto que possa ser chamado a partir de um shell script para manter a conexão aberta para você.

# Assuming qdbusviewer got /JobViewServer/JobView_15 from the call...

qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setInfoMessage 'Frobnicating the foobles...'
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setDescriptionField 1 Cromulence fair
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setPercent 25
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setSpeed 200
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setTotalAmount 100000 bytes
qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.setProcessedAmount 200 bytes

qdbus org.kde.kuiserver /JobViewServer/JobView_15 org.kde.JobViewV2.terminate 'Received Ctrl+C'

No entanto, se você estiver disposto a usar um pouco de Python em vez de shell script, posso fornecer um exemplo que faz funcionar e posso garantir que o Python seja uma alternativa muito agradável ao shell de script. as mesmas tarefas.

Aqui está escrito para demonstrar o maior número possível de recursos relevantes sem configurar um loop de eventos:

#!/usr/bin/env python

# This line opts into some Python 3.x features if you run Python 2.x
# and must go at the top of the file because it changes how the file is parsed.
# (Specifically, the Python 3.x print() syntax and sane division)
from __future__ import print_function, division

# These lines are analogous to 'source' in a shell script
# The 'import' statement searches 'sys.path' for the requested packages
import fnmatch, os, subprocess, time

# I'm not sure what package you'll need on OpenSUSE, but this comes from
# python-dbus on Debian, *buntu, and Mint.
import dbus

# -- Get a handle for the D-Bus API to create a new Job --

session_bus = dbus.SessionBus()

# A simple little helper function to paper over some complexity
# See Also: https://dbus.freedesktop.org/doc/dbus-python/doc/tutorial.html
def get_dbus_interface(name, path, interface):
    obj = session_bus.get_object(name, path)
    return dbus.Interface(obj, dbus_interface=interface)

create_handle = get_dbus_interface(
    'org.kde.kuiserver', '/JobViewServer', 'org.kde.JobViewServer')

# -- Create a Job and get a handle to manipulate it --

# requestView takes (appName, appIconName, capabilities)
# https://lists.freedesktop.org/archives/xdg/2008-April/009410.html
# ...but according to the source code, capabilities never got hooked up, so
# the pause and stop buttons will always be there, whether or not you're
# listening for them. (And stop will always kill the popup.)
request_path = create_handle.requestView('MyTestApp', 'download', 0)
request_handle = get_dbus_interface(
    'org.kde.kuiserver', request_path, 'org.kde.JobViewV2')

# -- Set up a fake task for demonstration purposes --
files = os.listdir('/etc')  # NOTE: Check out os.walk() for recursive
file_count = len(files)
wait_per_file = 5.0 / file_count  # Add 2 seconds to the total runtime

# -- Configure the bits of the popup that won't change in our example --
request_handle.setInfoMessage('Echoing files in /etc')
request_handle.setTotalAmount(file_count, 'files')
request_handle.setSpeed(200 * 1024**4)  # 200 TiB/s

# -- Do our fake work --

# NOTE: In Python, indentation outside of () and [] is significant
try:
    for position, filename in enumerate(files):
        # Visible in the collapsed view
        request_handle.setPercent((position / file_count) * 100)
        request_handle.setDescriptionField(0, 'Source', filename)
        request_handle.setDescriptionField(1, 'Destination', filename)

        # These are for the expanded view
        request_handle.setProcessedAmount(position, 'files')

        # Here's some fake work so you can see how to call subprocesses
        subprocess.call(['echo', filename])
        time.sleep(wait_per_file)

    # Set the final state of the popup that will be left behind
    request_handle.setDescriptionField(0, "", "Completed successfully.")
    request_handle.clearDescriptionField(1)
    request_handle.terminate("All done")
except KeyboardInterrupt:
    print("Ctrl+C Pressed")
    request_handle.setDescriptionField(0, "Cancelled", "Ctrl+C Pressed")
    request_handle.clearDescriptionField(1)
    request_handle.terminate("Cancelled from outside")
finally:
    # This gets called no matter what
    print("Doing fake cleanup")

print("%s of the files were *.conf" % len(fnmatch.filter(files, '*.conf')))

    

Answer 2

Eu modifiquei seu script python para executar um comando bash com um indicador de progresso. Você não vê progresso, mas pode ver se algo ainda está em execução.

#!/usr/bin/env python
# This line opts into some Python 3.x features if you run Python 2.x
# and must go at the top of the file because it changes how the file is parsed.
# (Specifically, the Python 3.x print() syntax and sane division)
from __future__ import print_function, division

# These lines are analogous to 'source' in a shell script
# The 'import' statement searches 'sys.path' for the requested packages
import subprocess, time

# I'm not sure what package you'll need on OpenSUSE, but this comes from
# python-dbus on Debian, *buntu, and Mint.
import dbus

# Get command line parameters
import sys

# Run bash script in background
import threading

# -- Get a handle for the D-Bus API to create a new Job --

session_bus = dbus.SessionBus()


# A simple little helper function to paper over some complexity
# See Also: https://dbus.freedesktop.org/doc/dbus-python/doc/tutorial.html
def get_dbus_interface(name, path, interface):
    obj = session_bus.get_object(name, path)
    return dbus.Interface(obj, dbus_interface=interface)


def run_bash_command(command):
    try:
        subprocess.call(command, shell=False)
    except Exception as e:
        print("Exception: ")
        print(e)


def main():
    create_handle = get_dbus_interface(
        'org.kde.kuiserver', '/JobViewServer', 'org.kde.JobViewServer')

    # -- Create a Job and get a handle to manipulate it --

    # requestView takes (appName, appIconName, capabilities)
    # https://lists.freedesktop.org/archives/xdg/2008-April/009410.html
    # ...but according to the source code, capabilities never got hooked up, so
    # the pause and stop buttons will always be there, whether or not you're
    # listening for them. (And stop will always kill the popup.)
    request_path = create_handle.requestView('bash', 'download', 0)
    request_handle = get_dbus_interface(
        'org.kde.kuiserver', request_path, 'org.kde.JobViewV2')

    # -- Configure the bits of the popup that won't change in our example --
    request_handle.setInfoMessage(sys.argv[1])

    # NOTE: In Python, indentation outside of () and [] is significant
    try:
        worker = threading.Thread(target=run_bash_command, args=[sys.argv[1:]])
        worker.start()
        #        for position, filename in enumerate(files):
        #            # Visible in the collapsed view
        request_handle.setPercent(0)
        request_handle.setDescriptionField(0, 'Command:', str(sys.argv[1]))
        request_handle.setDescriptionField(1, 'Arguments:', str(sys.argv[2:]))
        while worker.isAlive():
            time.sleep(1)

        # Set the final state of the popup that will be left behind
        request_handle.setDescriptionField(0, "", "Finished.")
#        request_handle.clearDescriptionField(1)
        request_handle.terminate("All done")
    except KeyboardInterrupt:
        request_handle.setDescriptionField(0, "Cancelled", "Ctrl+C Pressed")
        request_handle.clearDescriptionField(1)
        request_handle.terminate("Cancelled from outside")
    finally:
        # This gets called no matter what
        pass


main()