forked from IPKM/nmreval
Dominik Demuth
02f8a3bb31
adjustments to fit to see if fit is at least running, could help with #39 Co-authored-by: Dominik Demuth <dominik.demuth@physik.tu-darmstadt.de> Reviewed-on: IPKM/nmreval#43
288 lines
9.7 KiB
Python
288 lines
9.7 KiB
Python
from __future__ import annotations
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import os
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import urllib.request
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from os import getenv, stat
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from os.path import exists
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import hashlib
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import subprocess
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from datetime import datetime
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from contextlib import contextmanager
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from pathlib import Path
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from urllib.error import HTTPError
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from numpy import linspace
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from scipy.interpolate import interp1d
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from nmreval.lib.logger import logger
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from ..Qt import QtGui, QtWidgets, QtCore
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@contextmanager
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def busy_cursor():
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try:
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cursor = QtGui.QCursor(QtCore.Qt.ForbiddenCursor)
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QtWidgets.QApplication.setOverrideCursor(cursor)
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yield
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finally:
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QtWidgets.QApplication.restoreOverrideCursor()
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class RdBuCMap:
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# taken from Excel sheet from colorbrewer.org
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_rdbu = [
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(103, 0, 31),
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(178, 24, 43),
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(214, 96, 77),
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(244, 165, 130),
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(253, 219, 199),
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(247, 247, 247),
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(209, 229, 240),
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(146, 197, 222),
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(67, 147, 195),
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(33, 102, 172),
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(5, 48, 97)
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]
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def __init__(self, vmin=-1., vmax=1.):
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self.min = vmin
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self.max = vmax
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self.spline = [interp1d(linspace(self.max, self.min, num=11), [rgb[i] for rgb in RdBuCMap._rdbu])
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for i in range(3)]
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def color(self, val: float):
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if val > self.max:
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col = QtGui.QColor.fromRgb(*RdBuCMap._rdbu[0])
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elif val < self.min:
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col = QtGui.QColor.fromRgb(*RdBuCMap._rdbu[-1])
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else:
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col = QtGui.QColor.fromRgb(*(int(self.spline[i](val)) for i in range(3)))
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return col
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class UpdateDialog(QtWidgets.QDialog):
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startDownload = QtCore.pyqtSignal(tuple)
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def __init__(self, filename: str = None, parent=None):
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super().__init__(parent=parent)
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self._init_ui()
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if filename is None:
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filename = getenv('APPIMAGE')
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self._appfile = filename
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self.updater = Updater()
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self.thread = QtCore.QThread(self)
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self.thread.start()
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self.helper = Downloader()
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self.startDownload.connect(self.helper.run_download)
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self.helper.progressChanged.connect(self.status.setText)
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self.helper.finished.connect(self.finish_update)
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self.helper.started.connect(self.status.show)
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self.helper.moveToThread(self.thread)
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self.look_for_updates(self._appfile)
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def _init_ui(self):
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self.setWindowTitle('Updates')
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layout = QtWidgets.QVBoxLayout()
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self.label = QtWidgets.QLabel()
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layout.addWidget(self.label)
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layout.addSpacing(10)
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self.status = QtWidgets.QLabel()
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self.status.hide()
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layout.addWidget(self.status)
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layout.addSpacing(10)
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self.dialog_button = QtWidgets.QDialogButtonBox()
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self.dialog_button.accepted.connect(self.update_appimage)
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self.dialog_button.rejected.connect(self.close)
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layout.addWidget(self.dialog_button)
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self.setLayout(layout)
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def look_for_updates(self, filename=None):
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logger.info(f'Looking for updates, compare to file {filename}')
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# Download zsync file of latest Appimage, look for SHA-1 hash and compare with hash of AppImage
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is_updateble, m_time_file, m_time_zsync = self.updater.get_update_information(filename)
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label_text = ''
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if is_updateble is None:
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label_text += '<p>Could not determine if this version is newer, please update manually (if necessary).</p>'
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dialog_bttns = QtWidgets.QDialogButtonBox.Close
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elif is_updateble:
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label_text += '<p>Newer version available. Press Ok to download new version, Cancel to ignore.</p>'
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dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Cancel
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else:
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label_text += '<p>Version may be already up-to-date.</p>'
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dialog_bttns = QtWidgets.QDialogButtonBox.Close
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if m_time_zsync is None:
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label_text += '<p>Creation date of remote version is unknown.</p>'
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else:
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label_text += f'<p>Date of most recent AppImage: {m_time_zsync.strftime("%d %B %Y %H:%M")}</p>'
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if m_time_file is None:
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label_text += 'No AppImage file found, press Ok to download latest version.'
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dialog_bttns = QtWidgets.QDialogButtonBox.Ok | QtWidgets.QDialogButtonBox.Close
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else:
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label_text += f'<p>Date of used AppImage: {m_time_file.strftime("%d %B %Y %H:%M")}</p>'
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self.label.setText(label_text)
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self.dialog_button.setStandardButtons(dialog_bttns)
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@QtCore.pyqtSlot()
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def update_appimage(self):
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if self._appfile is None:
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args = (self.updater.zsync_url,)
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else:
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# this breaks the download for some reason
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args = (self.updater.zsync_url, self._appfile)
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self.dialog_button.setEnabled(False)
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self.startDownload.emit(args)
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self.status.show()
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@QtCore.pyqtSlot(int, str)
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def finish_update(self, retcode: int, file_loc: str):
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if retcode == 0:
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self.status.setText(f'Download complete.New AppImage lies in <p><em>{file_loc}</em>.</p>')
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else:
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self.status.setText(f'Download failed :( with return code {retcode}.')
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self.dialog_button.setStandardButtons(QtWidgets.QDialogButtonBox.Close)
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self.dialog_button.setEnabled(True)
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def closeEvent(self, evt):
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self.thread.quit()
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self.thread.wait()
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super().closeEvent(evt)
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class Downloader(QtCore.QObject):
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started = QtCore.pyqtSignal()
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finished = QtCore.pyqtSignal(int, str)
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progressChanged = QtCore.pyqtSignal(str)
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@QtCore.pyqtSlot(tuple)
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def run_download(self, args: tuple[str]):
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status = 0
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appimage_location = args[0][:-6]
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logger.info(f'Download {appimage_location}')
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if len(args) == 2:
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new_file = Path(args[1])
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else:
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new_file = Path.home() / 'Downloads' / 'NMReval-latest-x86_64.AppImage'
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if new_file.exists():
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os.rename(new_file, new_file.with_suffix('.AppImage.old'))
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try:
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with urllib.request.urlopen(appimage_location) as response:
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with new_file.open('wb') as f:
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f.write(response.read())
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new_file.chmod(0o755)
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except HTTPError as e:
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logger.exception(f'Download failed with {e}')
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status = 3
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except Exception as e:
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logger.exception(f'Download failed with {e.args}')
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status = 1
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if status != 0:
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logger.warning('Download failed, restore previous AppImage')
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try:
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os.rename(new_file.with_suffix('.AppImage.old'), new_file)
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except FileNotFoundError:
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pass
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# zsync does not support https
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self.finished.emit(status, str(new_file))
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class Updater:
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host = 'gitea.pkm.physik.tu-darmstadt.de/api/packages/IPKM/generic/NMReval/latest/'
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version = 'NMReval-latest-x86_64'
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@property
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def zsync_url(self):
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return f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
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@staticmethod
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def get_zsync():
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url_zsync = f'https://{Updater.host}/{Updater.version}.AppImage.zsync'
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m_time_zsync = None
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checksum_zsync = None
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zsync_file = None
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filename = None
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try:
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with urllib.request.urlopen(url_zsync) as response:
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zsync_file = response.read()
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except HTTPError as e:
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logger.error(f'Request for zsync returned code {e}')
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except Exception as e:
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logger.exception(f'Download of zsync failed with exception {e.args}')
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if zsync_file is not None:
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for line in zsync_file.split(b'\n'):
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try:
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kw, val = line.split(b': ')
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time_string = str(val, encoding='utf-8')
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time_format = '%a, %d %b %Y %H:%M:%S %z'
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if kw == b'MTime':
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try:
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m_time_zsync = datetime.strptime(time_string, time_format).astimezone(None)
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except ValueError:
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logger.warning(f'zsync time "{time_string}" does not match "{time_format}"')
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elif kw == b'SHA-1':
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checksum_zsync = str(val, encoding='utf-8')
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elif kw == b'Filename':
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filename = str(val, encoding='utf-8')
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except ValueError:
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# stop when empty line is reached
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break
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return m_time_zsync, checksum_zsync, filename
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@staticmethod
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def get_appimage_info(filename: str):
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if filename is None:
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return None, None
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if not exists(filename):
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return None, None
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stat_mtime = stat(filename).st_mtime
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m_time_file = datetime.fromtimestamp(stat_mtime).replace(microsecond=0)
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with open(filename, 'rb') as f:
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checksum_file = hashlib.sha1(f.read()).hexdigest()
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if checksum_file is None:
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logger.warning('No checksum for AppImage calculated')
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return m_time_file, checksum_file
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@staticmethod
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def get_update_information(filename: str) -> tuple[(bool | None), datetime, datetime]:
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m_time_zsync, checksum_zsync, appname = Updater.get_zsync()
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m_time_file, checksum_file = Updater.get_appimage_info(filename)
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logger.info(f'zsync information {m_time_zsync}, {checksum_zsync}, {appname}')
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logger.info(f'file information {m_time_file}, {checksum_file}')
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if not ((checksum_file is not None) and (checksum_zsync is not None)):
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return None, m_time_file, m_time_zsync
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else:
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return checksum_file != checksum_zsync, m_time_file, m_time_zsync
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