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# Copyright (c) 2017 Ultimaker B.V.
# Uranium is released under the terms of the LGPLv3 or higher.
from UM.Application import Application
from UM.Message import Message
from UM.Version import Version
from UM.Logger import Logger
from UM.Job import Job
import urllib.request
import platform
import json
import codecs
from UM.i18n import i18nCatalog
i18n_catalog = i18nCatalog("uranium")
## This job checks if there is an update available on the provided URL.
class UpdateCheckerJob(Job):
def __init__(self, silent = False, url = None, callback = None, set_download_url_callback = None):
super().__init__()
self.silent = silent
self._url = url
self._callback = callback
self._set_download_url_callback = set_download_url_callback
def run(self):
if not self._url:
Logger.log("e", "Can not check for a new release. URL not set!")
no_new_version = True
application_name = Application.getInstance().getApplicationName()
Logger.log("i", "Checking for new version of %s" % application_name)
try:
headers = {"User-Agent": "%s - %s" % (application_name, Application.getInstance().getVersion())}
request = urllib.request.Request(self._url, headers = headers)
latest_version_file = urllib.request.urlopen(request)
except Exception as e:
Logger.log("w", "Failed to check for new version: %s" % e)
if not self.silent:
Message(i18n_catalog.i18nc("@info", "Could not access update information."),
title = i18n_catalog.i18nc("@info:title", "Version Upgrade")
).show()
return
try:
reader = codecs.getreader("utf-8")
data = json.load(reader(latest_version_file))
try:
if Application.getInstance().getVersion() is not "master":
local_version = Version(Application.getInstance().getVersion())
else:
if not self.silent:
Message(i18n_catalog.i18nc("@info", "The version you are using does not support checking for updates."), title = i18n_catalog.i18nc("@info:title", "Warning")).show()
return
except ValueError:
Logger.log("w", "Could not determine application version from string %s, not checking for updates", Application.getInstance().getVersion())
if not self.silent:
Message(i18n_catalog.i18nc("@info", "The version you are using does not support checking for updates."), title = i18n_catalog.i18nc("@info:title", "Version Upgrade")).show()
return
if application_name in data:
for key, value in data[application_name].items():
if "major" in value and "minor" in value and "revision" in value and "url" in value:
os = key
if platform.system() == os: #TODO: add architecture check
newest_version = Version([int(value["major"]), int(value["minor"]), int(value["revision"])])
if local_version < newest_version:
Logger.log("i", "Found a new version of the software. Spawning message")
message = Message(i18n_catalog.i18nc("@info", "A new version is available!"), title = i18n_catalog.i18nc("@info:title", "Version Upgrade"))
message.addAction("download", i18n_catalog.i18nc("@action:button", "Download"), "[no_icon]", "[no_description]")
if self._set_download_url_callback:
self._set_download_url_callback(value["url"])
message.actionTriggered.connect(self._callback)
message.show()
no_new_version = False
break
else:
Logger.log("w", "Could not find version information or download url for update.")
else:
Logger.log("w", "Did not find any version information for %s." % application_name)
except Exception:
Logger.logException("e", "Exception in update checker while parsing the JSON file.")
Message(i18n_catalog.i18nc("@info", "An error occurred while checking for updates."), title = i18n_catalog.i18nc("@info:title", "Error")).show()
no_new_version = False # Just to suppress the message below.
if no_new_version and not self.silent:
Message(i18n_catalog.i18nc("@info", "No new version was found."), title = i18n_catalog.i18nc("@info:title", "Version Upgrade")).show()
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