123 lines
3.5 KiB
Python
123 lines
3.5 KiB
Python
from django.db import models
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from django.contrib.auth.models import User
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from django.core.validators import RegexValidator
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from django.conf import settings
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from pathlib import Path
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import msgpack
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from .tasks import update_user
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# Create your models here.
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class BorgRepository(models.Model):
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name = models.CharField(
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max_length=100,
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validators=[
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RegexValidator(
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r"[a-zA-Z0-9\-_]+", message="Only a-z, A-Z, 0-9, - and _ are allowed."
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)
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],
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)
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key = models.TextField(
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validators=[
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RegexValidator(
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r"^(ssh\-rsa|ecdsa\-sha2\-nistp256|ssh\-ed25519) ([a-zA-Z0-9\+/=]+)( ([\S ]*))?$",
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message="not a valid SSH public key.",
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),
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]
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)
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user = models.ForeignKey(User, on_delete=models.CASCADE)
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quota = models.IntegerField(default=500)
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used_quota = models.IntegerField(default=-1)
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class Meta:
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constraints = [
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models.UniqueConstraint(
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fields=("name", "user"), name="BorgRepository_name_user_unique"
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)
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]
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def __str__(self):
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return f"BorgRepository '{self.user.username}' - '{self.name}' ({self.pk})"
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@property
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def path(self) -> Path:
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return settings.BACKUP_BORG_DIR / str(self.user.pk) / str(self.pk)
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@property
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def repo_url(self) -> str:
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return f"{settings.BACKUP_USER}@{settings.BACKUP_REPO_HOST}:{self.user.pk}/{self.pk}"
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def save(self, *args, **kwargs):
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super().save(*args, **kwargs)
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update_user.enqueue()
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def delete(self):
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super().delete()
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update_user.enqueue()
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@property
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def key_type(self) -> str:
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return self.key.split(" ", 1)[0].strip()
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@property
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def key_value(self) -> str:
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return self.key.split(" ", 2)[1].strip()
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@property
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def key_comment(self) -> str | None:
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splits = self.key.split(" ", 2)
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if len(splits) == 3:
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return splits[2].strip()
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return None
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def truncated_key(self, length: int = 60):
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"""
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Returns a truncated version of the key for display purposes.
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The Key type and the comment are retained as much as possible.
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"""
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# check how long the truncated part of the key may be at most.
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max_len = length - len(self.key_type) - 1
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if self.key_comment:
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max_len = max_len - len(self.key_comment) - 1
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if len(self.key_value) > max_len:
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max_len -= 1 # remove one character if we add an ellipsis
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trunc_key = self.key_value[:max_len] + "…"
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else:
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trunc_key = self.key_value
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output = f"{self.key_type} {trunc_key}"
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if self.key_comment:
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output += f" {self.key_comment}"
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return output
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def refresh_quota(self):
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hints_files = self.path.glob("hints.*")
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try:
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hint = next(hints_files)
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data = hint.open(mode="rb").read()
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unpacked = msgpack.unpackb(data, strict_map_key=False, raw=True)
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quota_used = unpacked[b"storage_quota_use"]
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self.used_quota = int(quota_used / 10**9)
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except StopIteration:
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# No hints file found, therefore the repo is probably not initialized
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self.used_quota = -1
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class Voucher(models.Model):
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used = models.BooleanField(default=False)
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code = models.CharField(max_length=100, unique=True)
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def __str__(self):
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return f"Voucher '{self.code}'"
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