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File Content: `check_versions.py`

from parallels.core import MigrationNoContextError
from parallels.core.logging import get_logger
from parallels.core.actions.utils.logging_properties import LoggingProperties
from parallels.core.actions.base.common_action import CommonAction
from parallels.core.utils.common import safe_string_repr
from parallels.plesk import messages

logger = get_logger(__name__)


class CheckVersions(CommonAction):
    """Check that source Plesk version is lower that target Plesk version

    We don't support migration to lower version of Plesk, so we should immediately stop migration and
    inform customer about the issue.
    """

    def get_description(self):
        """Get short description of action as string

        :rtype: str
        """
        return messages.ACTION_CHECK_PLESKS_VERSIONS_DESCRIPTION

    def get_failure_message(self, global_context):
        """Get message for situation when action failed

        :type global_context: parallels.core.global_context.GlobalMigrationContext
        :rtype: str | unicode
        """
        return messages.ACTION_CHECK_PLESKS_VERSIONS_FAILURE

    def get_logging_properties(self):
        """Get how action should be logged to migration tools end-user

        :rtype: parallels.core.actions.utils.logging_properties.LoggingProperties
        """
        return LoggingProperties(compound=False)

    def run(self, global_context):
        """
        :type global_context: parallels.core.global_context.GlobalMigrationContext
        :rtype: None
        """
        target_version = global_context.conn.target.plesk_server.get_plesk_version()
        for source_id in global_context.conn.get_source_plesks().keys():
            source_server = global_context.conn.get_source_node(source_id)
            source_version = source_server.get_plesk_version()
            if target_version < source_version:
                raise MigrationNoContextError(messages.FAILURE_TARGET_VERSION_IS_LOWER.format(
                    source_version=".".join([safe_string_repr(i) for i in source_version]),
                    target_version=".".join([safe_string_repr(i) for i in target_version]),
                    source_id=source_id
                ))

Name	Size	Permission
__pycache__	---	0770
apache_restart_interval	---	0755
deploy	---	0755
dump	---	0755
hosting_settings	---	0755
__init__.py	0 bytes	0644
adjust_applications.py	6155 bytes	0644
check_target_license_limits.py	2962 bytes	0644
check_versions.py	2204 bytes	0644
convert.py	6781 bytes	0644
convert_ip_addresses.py	1583 bytes	0644
fix_web_confix_dot_net_2_to_4.py	5339 bytes	0644
print_application_adjust_report.py	1478 bytes	0644
sync_subscription_plan.py	3170 bytes	0644

File Content: check_versions.py

File Content: `check_versions.py`