def main():
"""Perform all steps for the entire conversion process."""
process_phase = ConversionPhase.INIT
# initialize logging
logger.initialize_logger("convert2rhel.log")
# get module level logger (inherits from root logger)
loggerinst = logging.getLogger(__name__)
try:
# handle command line arguments
toolopts.CLI()
process_phase = ConversionPhase.POST_CLI
# the tool will not run if not executed under the root user
utils.require_root()
# license agreement
loggerinst.task("Prepare: End user license agreement")
user_to_accept_eula()
# gather system information
loggerinst.task("Prepare: Gather system information")
systeminfo.system_info.resolve_system_info()
loggerinst.task("Prepare: Determine RHEL variant")
rhelvariant.determine_rhel_variant()
# backup system release file before starting conversion process
loggerinst.task("Prepare: Backup System")
redhatrelease.system_release_file.backup()
redhatrelease.yum_conf.backup()
# begin conversion process
process_phase = ConversionPhase.PRE_PONR_CHANGES
pre_ponr_conversion()
loggerinst.warning("The tool allows rollback of any action until this"
" point.")
loggerinst.warning("By continuing all further changes on the system"
" will need to be reverted manually by the user,"
" if necessary.")
utils.ask_to_continue()
process_phase = ConversionPhase.POST_PONR_CHANGES
post_ponr_conversion()
# recommend non-interactive command
loggerinst.task("Final: Non-interactive mode")
toolopts.print_non_interactive_opts()
# restart system if required
utils.restart_system()
except (Exception, SystemExit, KeyboardInterrupt), err:
# Catching the three exception types separately due to python 2.4
# (RHEL 5) - 2.7 (RHEL 7) compatibility.
utils.log_traceback(toolopts.tool_opts.debug)
print("\n")
if is_help_msg_exit(process_phase, err):
return 0
elif process_phase in (ConversionPhase.INIT, ConversionPhase.POST_CLI):
print("No changes were made to the system.")
elif process_phase == ConversionPhase.PRE_PONR_CHANGES:
rollback_changes()
elif process_phase == ConversionPhase.POST_PONR_CHANGES:
# After the process of subscription is done and the mass update of
# packages is started convert2rhel will not be able to guarantee a
# system rollback without user intervation. If a proper rollback
# solution is necessary it will need to be future implemented here
# or with the use of other backup tools.
print("Conversion process interrupted and manual user intervation"
" will be necessary.")
return 1
def main():
"""Perform all steps for the entire conversion process."""
# handle command line arguments
toolopts.CLI()
# the tool will not run if not executed under the root user
utils.require_root()
process_phase = ConversionPhase.INIT
# initialize logging
logger.initialize_logger("convert2rhel.log")
# get module level logger (inherits from root logger)
try:
process_phase = ConversionPhase.POST_CLI
# license agreement
loggerinst.task("Prepare: Show Red Hat software EULA")
show_eula()
# gather system information
loggerinst.task("Prepare: Gather system information")
systeminfo.system_info.resolve_system_info()
# check the system prior the conversion (possible inhibit)
loggerinst.task("Prepare: Initial system checks before conversion")
checks.perform_pre_checks()
# backup system release file before starting conversion process
loggerinst.task("Prepare: Backup System")
redhatrelease.system_release_file.backup()
redhatrelease.yum_conf.backup()
repo.backup_yum_repos()
loggerinst.task("Prepare: Clear YUM/DNF version locks")
pkghandler.clear_versionlock()
# begin conversion process
process_phase = ConversionPhase.PRE_PONR_CHANGES
pre_ponr_conversion()
loggerinst.warning(
"********************************************************")
loggerinst.warning(
"The tool allows rollback of any action until this point.")
loggerinst.warning("By continuing all further changes on the system"
" will need to be reverted manually by the user,"
" if necessary.")
loggerinst.warning(
"********************************************************")
utils.ask_to_continue()
process_phase = ConversionPhase.POST_PONR_CHANGES
post_ponr_conversion()
loggerinst.task("Final: rpm files modified by the conversion")
systeminfo.system_info.modified_rpm_files_diff()
# recommend non-interactive command
loggerinst.task("Final: Non-interactive mode")
toolopts.print_non_interactive_opts()
# restart system if required
utils.restart_system()
except (Exception, SystemExit, KeyboardInterrupt) as err:
# Catching the three exception types separately due to python 2.4
# (RHEL 5) - 2.7 (RHEL 7) compatibility.
utils.log_traceback(toolopts.tool_opts.debug)
no_changes_msg = "No changes were made to the system."
if is_help_msg_exit(process_phase, err):
return 0
elif process_phase == ConversionPhase.INIT:
print(no_changes_msg)
elif process_phase == ConversionPhase.POST_CLI:
loggerinst.info(no_changes_msg)
elif process_phase == ConversionPhase.PRE_PONR_CHANGES:
rollback_changes()
elif process_phase == ConversionPhase.POST_PONR_CHANGES:
# After the process of subscription is done and the mass update of
# packages is started convert2rhel will not be able to guarantee a
# system rollback without user intervention. If a proper rollback
# solution is necessary it will need to be future implemented here
# or with the use of other backup tools.
loggerinst.warning(
"Conversion process interrupted and manual user intervention will be necessary."
)
return 1
return 0