如何使用Django存储亚马逊S3中的图像文件和Vimeo中的视频

Question

我想将图像文件存储在S3中，视频文件存储在我的django项目中的Vimeo中。我是S3Boto3Storage of Django-storage作为存储后端。由于Vimeo负责视频文件的压缩和内容传递，而且它比S3便宜，所以我想将它用于视频文件。

我考虑使用django模型中的upload_to属性将文件上传到Vimeo，但无法在该方法中获得视频文件的绝对路径。

下面是我实现的upload_to方法，

import vimeo


def vimeo_client():
    client = vimeo.VimeoClient(
        token=settings.VIMEO_ACCESS_TOKEN,
        key=settings.VIMEO_CLIENT_ID,
        secret=settings.VIMEO_CLIENT_SECRET
    )
    return client

def get_media_path(instance, filename):
    new_filename = '{}.{}'.format(uuid.uuid4(), filename.split('.')[-1])
    if instance.type == 'image':
        file_path = 'posts/media/images/{filename}'.format(
            filename=new_filename)
    else:
        client = vimeo_client()
        file_path = client.upload(
            filename,
            data={
                'name': instance.title,
                'description': instance.description
            }
        )
    logger.info("File uploaded to: [{}]".format(file_path))
    return file_path

但它给了我这个错误

OSError: Errno 2没有这样的文件或目录：'videoplayback.mp4‘

或者我可以为我的目的定制S3Boto3Storage。我想知道什么是更好的解决办法。

编辑这里是完整的堆栈跟踪

Traceback (most recent call last):
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 157, in __call__
response = self.get_response(request)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/core/handlers/base.py", line 124, in get_response
response = self._middleware_chain(request)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/core/handlers/exception.py", line 43, in inner
response = response_for_exception(request, exc)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/core/handlers/exception.py", line 139, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/Users/rohanroy/development/django/zappa/appcore/src/appcore/wsgi.py", line 24, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/core/handlers/exception.py", line 41, in inner
response = get_response(request)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/core/handlers/base.py", line 249, in _legacy_get_response
response = self._get_response(request)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/core/handlers/base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/core/handlers/base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/contrib/admin/options.py", line 551, in wrapper
return self.admin_site.admin_view(view)(*args, **kwargs)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/utils/decorators.py", line 149, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/views/decorators/cache.py", line 57, in _wrapped_view_func
response = view_func(request, *args, **kwargs)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/contrib/admin/sites.py", line 224, in inner
return view(request, *args, **kwargs)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/contrib/admin/options.py", line 1508, in add_view
return self.changeform_view(request, None, form_url, extra_context)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/utils/decorators.py", line 67, in _wrapper
return bound_func(*args, **kwargs)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/utils/decorators.py", line 149, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/utils/decorators.py", line 63, in bound_func
return func.__get__(self, type(self))(*args2, **kwargs2)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/contrib/admin/options.py", line 1408, in changeform_view
return self._changeform_view(request, object_id, form_url, extra_context)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/contrib/admin/options.py", line 1448, in _changeform_view
self.save_model(request, new_object, form, not add)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/contrib/admin/options.py", line 979, in save_model
obj.save()
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/base.py", line 808, in save
force_update=force_update, update_fields=update_fields)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/base.py", line 838, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/base.py", line 924, in _save_table
result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/base.py", line 963, in _do_insert
using=using, raw=raw)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/manager.py", line 85, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/query.py", line 1076, in _insert
return query.get_compiler(using=using).execute_sql(return_id)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 1112, in execute_sql
for sql, params in self.as_sql():
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 1065, in as_sql
for obj in self.query.objs
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 1014, in pre_save_val
return field.pre_save(obj, add=True)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/fields/files.py", line 296, in pre_save
file.save(file.name, file.file, save=False)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/fields/files.py", line 93, in save
name = self.field.generate_filename(self.instance, name)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/django/db/models/fields/files.py", line 327, in generate_filename
filename = self.upload_to(instance, filename)
File "/Users/rohanroy/development/django/zappa/appcore/src/utils/common.py", line 50, in get_media_path
'description': instance.description
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/vimeo/upload.py", line 49, in upload
filesize = self.__get_file_size(filename)
File "/Users/rohanroy/development/django/zappa/arete/lib/python2.7/site-packages/vimeo/upload.py", line 163, in __get_file_size
return os.path.getsize(filename)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/genericpath.py", line 57, in getsize
return os.stat(filename).st_size
OSError: [Errno 2] No such file or directory: 'videoplayback.mp4'

Answer 1

Vimeo支持3种视频上传策略，这些策略都是讨论这里的。tus方法假定视频文件位于本地系统中。要从浏览器上传视频，需要使用form-based uploads方法，这对于API仅用于服务器并不有用。解决这个问题有两种选择，

1. 使用您自己的API端点将视频从客户端上传到API服务器，然后使用vimeo.py将其上传到Vimeo，并从服务器中删除实际的视频文件。
2. 使用vimeo.js从客户端上传视频文件，然后将返回的video_uri存储在后端。