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101 lines
3.4 KiB
101 lines
3.4 KiB
#!/usr/bin/env python
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#
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# Copyright (C) 2016 GNS3 Technologies Inc.
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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 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import uuid
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import shutil
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import asyncio
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import aiohttp.web
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from datetime import datetime, timezone
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from .import_project import import_project
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# The string use to extract the date from the filename
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FILENAME_TIME_FORMAT = "%d%m%y_%H%M%S"
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class Snapshot:
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"""
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A snapshot object
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"""
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def __init__(self, project, name=None, filename=None):
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assert filename or name, "You need to pass a name or a filename"
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self._id = str(uuid.uuid4()) # We don't need to keep id between project loading because they are use only as key for operation like delete, update.. but have no impact on disk
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self._project = project
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if name:
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self._name = name
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self._created_at = datetime.now().timestamp()
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filename = self._name + "_" + datetime.utcfromtimestamp(self._created_at).replace(tzinfo=None).strftime(FILENAME_TIME_FORMAT) + ".gns3project"
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else:
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self._name = filename.split("_")[0]
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datestring = filename.replace(self._name + "_", "").split(".")[0]
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try:
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self._created_at = datetime.strptime(datestring, FILENAME_TIME_FORMAT).replace(tzinfo=timezone.utc).timestamp()
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except ValueError:
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self._created_at = datetime.utcnow().timestamp()
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self._path = os.path.join(project.path, "snapshots", filename)
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@property
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def id(self):
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return self._id
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@property
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def name(self):
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return self._name
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@property
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def path(self):
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return self._path
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@property
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def created_at(self):
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return int(self._created_at)
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@asyncio.coroutine
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def restore(self):
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"""
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Restore the snapshot
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"""
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yield from self._project.delete_on_computes()
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# We don't send close notif to clients because the close / open dance is purely internal
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yield from self._project.close(ignore_notification=True)
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self._project.controller.notification.emit("snapshot.restored", self.__json__())
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try:
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if os.path.exists(os.path.join(self._project.path, "project-files")):
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shutil.rmtree(os.path.join(self._project.path, "project-files"))
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with open(self._path, "rb") as f:
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project = yield from import_project(self._project.controller, self._project.id, f, location=self._project.path)
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except (OSError, PermissionError) as e:
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raise aiohttp.web.HTTPConflict(text=str(e))
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yield from project.open()
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return project
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def __json__(self):
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return {
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"snapshot_id": self._id,
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"name": self._name,
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"created_at": int(self._created_at),
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"project_id": self._project.id
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}
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