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django_etesync/migrations/0005_auto_20200220_1123.py
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django_etesync/migrations/0005_auto_20200220_1123.py
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# Generated by Django 3.0.3 on 2020-02-20 11:23
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from django.db import migrations, models
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import django.db.models.deletion
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class Migration(migrations.Migration):
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dependencies = [
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('django_etesync', '0004_auto_20200220_1029'),
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]
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operations = [
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migrations.RemoveField(
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model_name='collectionitemchunk',
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name='items',
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),
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migrations.AddField(
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model_name='collectionitem',
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name='chunks',
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field=models.ManyToManyField(related_name='items', to='django_etesync.CollectionItemChunk'),
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),
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migrations.AddField(
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model_name='collectionitemchunk',
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name='collection',
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field=models.ForeignKey(default=1, on_delete=django.db.models.deletion.CASCADE, related_name='chunks', to='django_etesync.Collection'),
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preserve_default=False,
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),
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]
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49
django_etesync/migrations/0006_auto_20200220_1137.py
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django_etesync/migrations/0006_auto_20200220_1137.py
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# Generated by Django 3.0.3 on 2020-02-20 11:37
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from django.db import migrations, models
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import django.db.models.deletion
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class Migration(migrations.Migration):
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dependencies = [
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('django_etesync', '0005_auto_20200220_1123'),
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]
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operations = [
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migrations.RemoveField(
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model_name='collectionitem',
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name='chunks',
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),
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migrations.RemoveField(
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model_name='collectionitem',
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name='current',
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),
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migrations.RemoveField(
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model_name='collectionitem',
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name='encryptionKey',
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),
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migrations.RemoveField(
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model_name='collectionitem',
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name='hmac',
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),
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migrations.RemoveField(
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model_name='collectionitem',
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name='version',
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),
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migrations.CreateModel(
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name='CollectionItemSnapshot',
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fields=[
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('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
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('version', models.PositiveSmallIntegerField()),
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('encryptionKey', models.BinaryField(editable=True)),
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('hmac', models.CharField(max_length=50)),
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('current', models.BooleanField(db_index=True, default=True)),
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('chunks', models.ManyToManyField(related_name='items', to='django_etesync.CollectionItemChunk')),
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('item', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='snapshots', to='django_etesync.CollectionItem')),
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],
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options={
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'unique_together': {('item', 'current')},
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},
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),
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]
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28
django_etesync/migrations/0007_auto_20200220_1144.py
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django_etesync/migrations/0007_auto_20200220_1144.py
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# Generated by Django 3.0.3 on 2020-02-20 11:44
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from django.db import migrations, models
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import django.db.models.deletion
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class Migration(migrations.Migration):
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dependencies = [
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('django_etesync', '0006_auto_20200220_1137'),
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]
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operations = [
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migrations.AddField(
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model_name='collectionitemchunk',
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name='item',
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field=models.ForeignKey(default=1, on_delete=django.db.models.deletion.CASCADE, related_name='chunks', to='django_etesync.CollectionItem'),
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preserve_default=False,
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),
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migrations.AlterUniqueTogether(
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name='collectionitemchunk',
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unique_together={('item', 'order')},
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),
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migrations.RemoveField(
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model_name='collectionitemchunk',
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name='collection',
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),
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]
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@ -35,26 +35,6 @@ class Collection(models.Model):
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def __str__(self):
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return self.uid
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@cached_property
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def current_items(self):
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return self.items.filter(current=True)
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class CollectionItem(models.Model):
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uid = models.CharField(db_index=True, blank=False, null=False,
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max_length=44, validators=[UidValidator])
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version = models.PositiveSmallIntegerField()
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encryptionKey = models.BinaryField(editable=True, blank=False, null=False)
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collection = models.ForeignKey(Collection, related_name='items', on_delete=models.CASCADE)
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hmac = models.CharField(max_length=50, blank=False, null=False)
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current = models.BooleanField(db_index=True, default=True)
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class Meta:
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unique_together = ('uid', 'collection')
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def __str__(self):
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return self.uid
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def chunk_directory_path(instance, filename):
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col = instance.itemSnapshot.item.collection
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@ -62,15 +42,49 @@ def chunk_directory_path(instance, filename):
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return Path('user_{}'.format(user_id), col.uid, instance.uid)
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class CollectionItem(models.Model):
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uid = models.CharField(db_index=True, blank=False, null=False,
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max_length=44, validators=[UidValidator])
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collection = models.ForeignKey(Collection, related_name='items', on_delete=models.CASCADE)
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class Meta:
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unique_together = ('uid', 'collection')
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def __str__(self):
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return self.uid
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@cached_property
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def content(self):
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return self.snapshots.get(current=True)
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class CollectionItemChunk(models.Model):
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uid = models.CharField(db_index=True, blank=False, null=False,
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max_length=44, validators=[UidValidator])
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items = models.ManyToManyField(CollectionItem, related_name='chunks')
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item = models.ForeignKey(CollectionItem, related_name='chunks', on_delete=models.CASCADE)
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order = models.CharField(max_length=100, blank=False, null=False)
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# We probably just want to implement this manually because we can have more than one pointing to a file. chunkFile = models.FileField(upload_to=chunk_directory_path)
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class Meta:
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unique_together = ('item', 'order')
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ordering = ['order']
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def __str__(self):
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return self.uid
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class CollectionItemSnapshot(models.Model):
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version = models.PositiveSmallIntegerField()
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encryptionKey = models.BinaryField(editable=True, blank=False, null=False)
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item = models.ForeignKey(CollectionItem, related_name='snapshots', on_delete=models.CASCADE)
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chunks = models.ManyToManyField(CollectionItemChunk, related_name='items')
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hmac = models.CharField(max_length=50, blank=False, null=False)
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current = models.BooleanField(db_index=True, default=True)
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class Meta:
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unique_together = ('item', 'current')
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def __str__(self):
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return '{} {} current={}'.format(self.item.uid, self.id, self.current)
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fields = ('uid', )
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class CollectionItemSerializer(serializers.ModelSerializer):
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class CollectionItemSnapshotSerializer(serializers.ModelSerializer):
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encryptionKey = BinaryBase64Field()
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chunks = serializers.SlugRelatedField(
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slug_field='uid',
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)
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class Meta:
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model = models.CollectionItem
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fields = ('uid', 'version', 'encryptionKey', 'chunks', 'hmac')
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model = models.CollectionItemSnapshot
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fields = ('version', 'encryptionKey', 'chunks', 'hmac')
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class CollectionItemInlineSerializer(CollectionItemSerializer):
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class CollectionItemSnapshotInlineSerializer(CollectionItemSnapshotSerializer):
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chunksData = serializers.SerializerMethodField('get_inline_chunks_from_context')
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class Meta(CollectionItemSerializer.Meta):
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fields = CollectionItemSerializer.Meta.fields + ('chunksData', )
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class Meta(CollectionItemSnapshotSerializer.Meta):
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fields = CollectionItemSnapshotSerializer.Meta.fields + ('chunksData', )
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def get_inline_chunks_from_context(self, obj):
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request = self.context.get('request', None)
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if request is not None:
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return ['SomeInlineData', 'Somemoredata']
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return 'readOnly'
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class CollectionItemSerializer(serializers.ModelSerializer):
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content = CollectionItemSnapshotSerializer(read_only=True, many=False)
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class Meta:
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model = models.CollectionItem
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fields = ('uid', 'content')
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class CollectionItemInlineSerializer(CollectionItemSerializer):
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content = CollectionItemSnapshotInlineSerializer(read_only=True, many=False)
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from rest_framework import status
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from rest_framework import viewsets
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from rest_framework import parsers
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from rest_framework.response import Response
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from . import app_settings, paginators
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@ -143,3 +144,40 @@ class CollectionItemViewSet(BaseViewSet):
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def partial_update(self, request, collection_uid=None, uid=None):
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# FIXME: implement, or should it be implemented elsewhere?
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return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
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class CollectionItemChunkViewSet(viewsets.ViewSet):
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allowed_methods = ['GET', 'POST']
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authentication_classes = BaseViewSet.authentication_classes
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permission_classes = BaseViewSet.permission_classes
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parser_classes = (parsers.MultiPartParser, )
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lookup_field = 'uid'
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def create(self, request, collection_uid=None):
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# FIXME: we are potentially not getting the correct queryset
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collection_object = Collection.objects.get(uid=collection_uid)
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many = isinstance(request.data, list)
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serializer = self.serializer_class(data=request.data, many=many)
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if serializer.is_valid():
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try:
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serializer.save(collection=collection_object)
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except IntegrityError:
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content = {'code': 'integrity_error'}
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return Response(content, status=status.HTTP_400_BAD_REQUEST)
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return Response({}, status=status.HTTP_201_CREATED)
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return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
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def destroy(self, request, collection_uid=None, uid=None):
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# FIXME: implement
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return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
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def update(self, request, collection_uid=None, uid=None):
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# FIXME: implement, or should it be implemented elsewhere?
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return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
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def partial_update(self, request, collection_uid=None, uid=None):
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# FIXME: implement, or should it be implemented elsewhere?
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return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
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