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annotate flatpak/libervia_wrapper-dbus_keep.py @ 173:0d2eb834fc59

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author Goffi <goffi@goffi.org>
date Tue, 30 Nov 2021 22:14:01 +0100
parents a213053a03be
children
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1 #!/usr/bin/env python3
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2
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3 """This script launch Libervia backend if it's not before running command, and keep it running afterwards"""
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4
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5 # We keep the backend running to avoid the backend launching cost each time the frontend is used
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6
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7 import os
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8 import sys
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9 import dbus
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10 import subprocess
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11 from sat.tools import config
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12
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13 command = "##COMMAND##"
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14 const_INT_PREFIX = "org.libervia.LiberviaCLI"
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15 const_OBJ_PATH = '/org/libervia/Libervia/bridge'
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17 const_INT_PREFIX = config.getConfig(
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18 config.parseMainConf(),
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19 "",
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20 "bridge_dbus_int_prefix",
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21 "org.libervia.Libervia")
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22
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23 # we remove any path with "/home" from PYTHONPATH because we have
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24 # "--filesystem=home" permission and packages in .local/lib/pythonX/site-packages may
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25 # conflict with the ones from flatpak
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26 clean_pythonpath = ':'.join(p for p in sys.path if p and not p.startswith('/home'))
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27 os.environ['PYTHONPATH'] = clean_pythonpath
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28 os.environ['PYTHONNOUSERSITE'] = '1'
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30 try:
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31 sessions_bus = dbus.SessionBus()
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32 db_object = sessions_bus.get_object(const_INT_PREFIX,
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33 const_OBJ_PATH)
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34 except dbus.exceptions.DBusException as e:
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35 if e._dbus_error_name != 'org.freedesktop.DBus.Error.ServiceUnknown':
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36 raise e
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37 # backend not found, we need to launch it
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38 print("Launching Libervia backend")
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39 subprocess.check_call("libervia-backend")
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40
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41 os.execlp(command, command, *sys.argv[1:])