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123 lines
4.4 KiB
Python
123 lines
4.4 KiB
Python
import os
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import shutil
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import boto3
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from django.conf import settings
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from django.db import migrations, models
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from django.db.backends.postgresql.schema import DatabaseSchemaEditor
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from django.db.migrations.state import StateApps
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class Uploader:
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def __init__(self) -> None:
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self.old_orig_image_path_template = "{realm_id}/emoji/{emoji_file_name}.original"
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self.old_path_template = "{realm_id}/emoji/{emoji_file_name}"
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self.new_orig_image_path_template = "{realm_id}/emoji/images/{emoji_file_name}.original"
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self.new_path_template = "{realm_id}/emoji/images/{emoji_file_name}"
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def copy_files(self, src_path: str, dst_path: str) -> None:
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raise NotImplementedError()
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def ensure_emoji_images(self, realm_id: int, old_filename: str, new_filename: str) -> None:
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# Copy original image file.
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old_file_path = self.old_orig_image_path_template.format(
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realm_id=realm_id, emoji_file_name=old_filename
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)
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new_file_path = self.new_orig_image_path_template.format(
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realm_id=realm_id, emoji_file_name=new_filename
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)
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self.copy_files(old_file_path, new_file_path)
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# Copy resized image file.
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old_file_path = self.old_path_template.format(
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realm_id=realm_id, emoji_file_name=old_filename
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)
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new_file_path = self.new_path_template.format(
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realm_id=realm_id, emoji_file_name=new_filename
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)
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self.copy_files(old_file_path, new_file_path)
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class LocalUploader(Uploader):
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def __init__(self) -> None:
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super().__init__()
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@staticmethod
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def mkdirs(path: str) -> None:
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dirname = os.path.dirname(path)
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if not os.path.isdir(dirname):
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os.makedirs(dirname)
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def copy_files(self, src_path: str, dst_path: str) -> None:
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src_path = os.path.join(settings.LOCAL_UPLOADS_DIR, 'avatars', src_path)
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self.mkdirs(src_path)
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dst_path = os.path.join(settings.LOCAL_UPLOADS_DIR, 'avatars', dst_path)
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self.mkdirs(dst_path)
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shutil.copyfile(src_path, dst_path)
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class S3Uploader(Uploader):
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def __init__(self) -> None:
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super().__init__()
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session = boto3.Session(settings.S3_KEY, settings.S3_SECRET_KEY)
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self.bucket_name = settings.S3_AVATAR_BUCKET
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self.bucket = session.resource(
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's3', region_name=settings.S3_REGION, endpoint_url=settings.S3_ENDPOINT_URL
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).Bucket(self.bucket_name)
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def copy_files(self, src_key: str, dst_key: str) -> None:
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source = dict(Bucket=self.bucket_name, Key=src_key)
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self.bucket.copy(source, dst_key)
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def get_uploader() -> Uploader:
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if settings.LOCAL_UPLOADS_DIR is None:
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return S3Uploader()
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return LocalUploader()
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def get_emoji_file_name(emoji_file_name: str, new_name: str) -> str:
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_, image_ext = os.path.splitext(emoji_file_name)
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return ''.join((new_name, image_ext))
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def migrate_realm_emoji_image_files(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
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RealmEmoji = apps.get_model('zerver', 'RealmEmoji')
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uploader = get_uploader()
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for realm_emoji in RealmEmoji.objects.all():
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old_file_name = realm_emoji.file_name
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new_file_name = get_emoji_file_name(old_file_name, str(realm_emoji.id))
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uploader.ensure_emoji_images(realm_emoji.realm_id, old_file_name, new_file_name)
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realm_emoji.file_name = new_file_name
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realm_emoji.save(update_fields=['file_name'])
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def reversal(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
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# Ensures that migration can be re-run in case of a failure.
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RealmEmoji = apps.get_model('zerver', 'RealmEmoji')
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for realm_emoji in RealmEmoji.objects.all():
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corrupt_file_name = realm_emoji.file_name
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correct_file_name = get_emoji_file_name(corrupt_file_name, realm_emoji.name)
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realm_emoji.file_name = correct_file_name
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realm_emoji.save(update_fields=['file_name'])
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class Migration(migrations.Migration):
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dependencies = [
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('zerver', '0148_max_invites_forget_default'),
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]
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operations = [
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migrations.AlterUniqueTogether(
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name='realmemoji',
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unique_together=set(),
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),
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migrations.AlterField(
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model_name='realmemoji',
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name='file_name',
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field=models.TextField(db_index=True, null=True, blank=True),
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),
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migrations.RunPython(migrate_realm_emoji_image_files, reverse_code=reversal, elidable=True),
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]
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