launcherHelper.py

#! /usr/bin/python3.7
import subprocess
import os
import common.constants as co
from common.params import Params
from common.keys import keys_by_Type, TxType
from factory_settings.params import factory_settings
from common.logger import loggerDEBUG, loggerINFO, loggerWARNING, loggerERROR, loggerCRITICAL

def ensureSettingsStoredInParametersDatabase():
    from common.transferSettings import transferSettingsToParams_db
    try:
        if not os.path.isfile(co.PARAMS_DB_TRANSFERRED_FLAG):
            transferSettingsToParams_db()
            if not os.path.exists('/home/pi/ras/data'):
                os.makedirs('/home/pi/ras/data')
            with open(co.PARAMS_DB_TRANSFERRED_FLAG, 'w'): pass
    except:
        pass  

def copyDeviceCustomizationJson():
    try:
        file1 = "/home/pi/ras/dicts/deviceCustomization.json "
        file2 = "/home/pi/ras/dicts/deviceCustomization.sample.json "
        command = "sudo cp " + file1 + " " + file2
        completed = subprocess.run(command.split(),
                stdout=subprocess.DEVNULL,
                stderr=subprocess.STDOUT)
    except:
        pass 

def installSystemdAndDecouple():
    try:
        first_module_install_flag = "/home/pi/ras/data/first_module_install_flag"
        if not os.path.isfile(first_module_install_flag):
            command = "sudo pip3 install systemd-python"
            completed = subprocess.run(command.split(),
                stdout=subprocess.DEVNULL,
                stderr=subprocess.STDOUT)
            command = "sudo pip3 install python-decouple"
            completed = subprocess.run(command.split(),
                stdout=subprocess.DEVNULL,
                stderr=subprocess.STDOUT)
            if not os.path.exists('/home/pi/ras/data'):
                os.makedirs('/home/pi/ras/data')
            with open(first_module_install_flag, 'w'): pass
    except:
        pass  

def ensure_modules_are_installed():
    from moduleInstaller import installModules

    modules_to_be_installed = [  \
        "systemd-python",
        "python-decouple",
        "pyzmq",
        "colorama",
        "setproctitle",
        "psutil" ]

    installModules(modules_to_be_installed)

def ensureMigrationsAndSettings():

    copyDeviceCustomizationJson()
       
    installSystemdAndDecouple()

    from lib.Utils import getSettingsFromDeviceCustomization, migrationToVersion1_4_2

    migrationToVersion1_4_2()

    getSettingsFromDeviceCustomization()

    ensure_modules_are_installed()

    import lib.Utils as ut

    ut.removeMessagesFromDeviceCustomizationJson() # stores it in json and makes a copy into the sample json too

    ensureSettingsStoredInParametersDatabase()

def store_factory_settings_in_database():
    params = Params(db=co.PARAMS)
    for k in keys_by_Type[TxType.FACTORY_SETTINGS]:
        try:
            params.put(k, factory_settings[k])
        except Exception as e:
            loggerERROR(f"exception while storing factory setting {k}: {e}")