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#!/usr/bin/env python |
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# -*- coding: UTF-8 -*- |
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# Isomer - The distributed application framework |
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# ============================================== |
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# Copyright (C) 2011-2020 Heiko 'riot' Weinen <[email protected]> and others. |
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# |
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# This program is free software: you can redistribute it and/or modify |
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# it under the terms of the GNU Affero General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU Affero General Public License for more details. |
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# |
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# You should have received a copy of the GNU Affero General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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""" |
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Module: Instance.component |
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======================= |
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Instance management component. |
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""" |
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import requests |
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from json.decoder import JSONDecodeError |
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from urllib.parse import urljoin |
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from isomer.events.system import system_stop |
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from isomer.logger import error, critical, debug |
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from isomer.database import objectmodels |
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from isomer.events.system import authorized_event, isomer_event |
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from isomer.component import ConfigurableComponent, handler |
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from isomer.ui.store import DEFAULT_STORE_URL |
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class get_instance_data(authorized_event): |
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"""Request general information on the running instance""" |
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roles = ['admin'] |
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class upgrade_isomer(authorized_event): |
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"""Request an upgrade of Isomer for this instance""" |
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roles = ['admin'] |
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class restart_instance(authorized_event): |
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"""Request a restart of Isomer for this instance""" |
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roles = ['admin'] |
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class notify_restart_required(isomer_event): |
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"""Internal notification that a restart will be required """ |
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reason = "" |
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class InstanceInfo(ConfigurableComponent): |
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"""Instance overview information component for Isomer""" |
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configprops = { |
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'update_server': {'type': 'string', 'default': DEFAULT_STORE_URL}, |
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'auth': { |
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'type': 'object', |
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'properties': { |
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'username': {'type': 'string'}, |
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'password': { |
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'type': 'string', |
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'x-schema-form': {'type': 'password'} |
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} |
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}, |
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'default': {'username': '', 'password': ''} |
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} |
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} |
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def __init__(self, *args, **kwargs): |
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super(InstanceInfo, self).__init__('INSTANCEINFO', *args, **kwargs) |
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# self.log(self.context.__dict__, pretty=True) |
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systemconfig = objectmodels['systemconfig'].find_one({'active': True}) |
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self.needs_restart = False |
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self.restart_reasons = [] |
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url = urljoin(self.config.update_server, "/store/isomer_enrol/") |
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try: |
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data = requests.get( |
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url, auth=( |
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self.config.auth['username'], self.config.auth['password']) |
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) |
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self.latest_version = data.json()['isomer_enrol'] |
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except (requests.RequestException, JSONDecodeError, KeyError): |
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self.log("Can't access store isomer version.", lvl=error) |
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self.log("Store access error:\n", exc=True, lvl=debug) |
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self.latest_version = "N/A" |
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self.current_version = "N/A" |
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for item in systemconfig.packages: |
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if item['name'] == "isomer": |
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self.current_version = ".".join(item['version'].split(".")[:3]) |
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continue |
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@handler(get_instance_data) |
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def get_instance_data(self, event): |
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"""Handler for general information on the running instance""" |
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obj = self.context.obj |
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result = { |
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'needs_restart': self.needs_restart, |
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'restart_reasons': self.restart_reasons, |
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'latest_version': self.latest_version, |
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'current_version': self.current_version, |
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'context': { |
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'acting_environment': obj['acting_environment'], |
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'config': obj['config'], |
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'dbhost': obj['dbhost'], |
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'dbname': obj['dbname'], |
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'environment': obj['environment'], |
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'instance': obj['instance'], |
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'instance_configuration': obj['instance_configuration'] |
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} |
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} |
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self._respond(event, result) |
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return |
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@handler("notify_restart_required") |
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def notify_restart_required(self, reason): |
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"""Toggles the user interface notification to restart the instance""" |
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self.log("Restart requested by another component for:", reason) |
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self.needs_restart = True |
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if reason not in self.restart_reasons: |
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self.restart_reasons.append(reason) |
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@handler(upgrade_isomer) |
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def upgrade_isomer(self, event): |
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"""Upgrade Isomer""" |
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self.log("Beginning Isomer upgrade.") |
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upgraded_version = self.latest_version |
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reason = "Upgraded Isomer to " + upgraded_version |
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self.fireEvent( |
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notify_restart_required(reason) |
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) |
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self._respond(event, reason) |
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@handler(restart_instance) |
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def restart_instance(self): |
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"""Terminate the currently running instance and restart it""" |
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self.log("Terminating to restart on admin request", lvl=critical) |
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open("/tmp/isomer_toggle_%s" % self.context.obj['instance'], "a").close() |
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self.fireEvent(system_stop()) |
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isomeric /
isomer
