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model.py
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model.py
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#!/usr/bin/env python3
# This file is part of xjs a tool used to disply offline juju status
# Copyright 2019 Canonical Ltd.
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License version 3, as published by the
# Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranties of MERCHANTABILITY,
# SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
import re
from colors import Color
from packaging import version
import pendulum
class Model:
# TODO get latest juju version dynamically
latest_juju_version = version.parse("2.6.8")
column_names = [
"Model",
"Controller",
"Cloud/Region",
"Version",
"SLA",
"Timestamp",
"Model-Status",
"Meter-Status",
"Message",
"Notes",
]
def __init__(self, modelinfo, controller, juju1env=None):
"""
Create a Model object with basic information from a model object
from a juju status output
"""
# Default Values
self.notes = []
self.applications = {}
self.relations = {}
self.machines = {}
self.containers = {}
self.meterstatus = ""
self.message = ""
self.upgradeavailable = ""
# Required Variables
if "name" in modelinfo:
self.name = modelinfo["name"]
else:
self.name = "NA"
if "type" in modelinfo:
self.type = modelinfo["type"]
else:
self.type = "NA"
self.controller = controller
if "controller" in modelinfo:
self.controller.name = modelinfo["controller"]
if "cloud" in modelinfo:
self.cloud = modelinfo["cloud"]
elif juju1env:
self.cloud = juju1env
else:
self.cloud = "NA"
if "version" in modelinfo:
self.version = modelinfo["version"]
else:
self.version = "1.x.x"
if "model-status" in modelinfo:
self.modelstatus = modelinfo["model-status"]["current"]
else:
self.modelstatus = "NA"
if "sla" in modelinfo:
self.sla = modelinfo["sla"]
else:
self.sla = "NA"
# Required Dates
if "model-status" in modelinfo and "since" in modelinfo["model-status"]:
if re.match(r".*Z$", modelinfo["model-status"]["since"]):
modelinfo["model-status"]["since"] = re.sub(r"Z$", "", modelinfo["model-status"]["since"])
self.since = pendulum.from_format(
modelinfo["model-status"]["since"],
"DD MMM YYYY HH:mm:ss",
tz="UTC",
)
else:
self.since = pendulum.from_format(
modelinfo["model-status"]["since"], "DD MMM YYYY HH:mm:ssZ"
)
controller.update_timestamp(self.since)
# Optional Variables
if "meter-status" in modelinfo:
self.meterstatus = modelinfo["meter-status"]["color"]
self.message = modelinfo["meter-status"]["message"]
if "upgrade-available" in modelinfo:
self.upgradeavailable = modelinfo["upgrade-available"]
self.notes.append("upgrade available: " + self.upgradeavailable)
def __dict__(self):
return {self.name: self}
def add_application(self, application):
"""Add an Application to this model"""
self.applications[application.name] = application
def add_machine(self, machine):
"""Add a machine to this model"""
self.machines[machine.name] = machine
def add_container(self, container):
"""Add a container to this model"""
self.containers[container.name] = container
def add_relation(self, relation):
if relation is not None:
"""Add a relation if it doesn't already exist"""
if not relation.name in self.relations:
self.relations[relation.name] = []
self.relations[relation.name].append(relation)
return
else:
if not self.get_relation(relation.name, relation.application.name,
relation.partner.name):
self.relations[relation.name].append(relation)
def get_relation(self, name, app_name, partner_name):
if name in self.relations:
for relation in self.relations[name]:
if ((relation.application.name == app_name
and relation.partner.name == partner_name) or
(relation.partner.name == app_name and
relation.application.name == partner_name)):
return relation
return None
else:
return None
def get_application(self, searchappname):
"""Get an Application by name"""
for appname, application in self.applications.items():
if appname == searchappname:
return application
return None
def get_machine(self, machinename):
"""Get a machine by name"""
if machinename in self.machines:
return self.machines[machinename]
else:
return None
def get_container(self, containername):
"""Get a container by name"""
if containername in self.containers:
return self.containers[containername]
else:
return None
def get_version_color(self):
"""Return a version string with correct colors based on version"""
model_version = version.parse(self.version)
if (
model_version < version.parse("2.0.0")
or model_version > Model.latest_juju_version
):
return Color.Fg.Red + self.version + Color.Reset
elif model_version < Model.latest_juju_version:
return Color.Fg.Yellow + self.version + Color.Reset
else:
return Color.Fg.Green + self.version + Color.Reset
# TODO Figure out all possible values of all options and color accordingly
def get_modelstatus_color(self):
"""Return a status string with correct colors based on status"""
if self.modelstatus == "available":
return Color.Fg.Green + self.modelstatus + Color.Reset
else:
return Color.Fg.Red + self.modelstatus + Color.Reset
def get_meterstatus_color(self):
"""
Return a meter status string with correct colors based on meter
status
"""
if not self.meterstatus:
return ""
if self.meterstatus == "green":
return Color.Fg.Green + self.meterstatus + Color.Reset
elif self.meterstatus == "red":
return Color.Fg.Red + self.meterstatus + Color.Reset
elif self.meterstatus == "amber":
return Color.Fg.Orange + self.meterstatus + Color.Reset
else:
return Color.Fg.Yellow + self.meterstatus + Color.Reset
def get_row(
self, color, include_controller_name=True, include_model_name=True
):
"""Return a list which can be used for a row in a table."""
if not self.controller.timestampprovided:
if color:
self.notes.append(
Color.Fg.Yellow + "Guessing at timestamp" + Color.Reset
)
else:
self.notes.append("Guessing at timestamp")
notesstr = ", ".join(self.notes)
timestampstr = self.controller.timestamp.strftime("%H:%M:%SZ")
if color:
return [
self.name,
self.controller.name,
self.cloud,
self.get_version_color(),
self.sla,
timestampstr,
self.get_modelstatus_color(),
self.get_meterstatus_color(),
self.message,
notesstr,
]
else:
return [
self.name,
self.controller.name,
self.cloud,
self.version,
self.sla,
timestampstr,
self.modelstatus,
self.meterstatus,
self.message,
notesstr,
]
def get_column_names(
self, include_controller_name=True, include_model_name=True
):
"""Append the controller name and/or model name as necessary"""
return self.column_names
def filter_dictionary(self, dictionary, key_filter):
return {
key: value
for (key, value) in dictionary.items()
if key_filter in key
}
def filter_applications(self, app_filter):
apps = self.filter_dictionary(self.applications, app_filter)
parent_apps = {}
for appname, appinfo in apps.items():
for subname, subinfo in appinfo.subordinates.items():
parent_apps[
subinfo.unit.application.name
] = subinfo.unit.application
self.applications = {**apps, **parent_apps}
self.reset_machines()
def reset_machines(self):
machines = {}
containers = {}
for appname, appinfo in self.applications.items():
for unitname, unitinfo in appinfo.units.items():
if unitinfo.machine.iscontainer:
containers[unitinfo.machine.name] = unitinfo.machine
machines[
unitinfo.machine.machine.name
] = unitinfo.machine.machine
else:
machines[unitinfo.machine.name] = unitinfo.machine
for subunitname, subunitinfo in appinfo.subordinates.items():
if subunitinfo.machine.iscontainer:
containers[subunitinfo.machine.name] = subunitinfo.machine
machines[
subunitinfo.machine.machine.name
] = subunitinfo.machine.machine
else:
machines[subunitinfo.machine.name] = subunitinfo.machine
for machinename, machine in machines.items():
oldcontainers = machine.containers.keys() - containers.keys()
for containername in oldcontainers:
del machine.containers[containername]
self.machines = machines
self.containers = containers