Upload large files to Django in multiple chunks, with the ability to resume if the upload is interrupted.
Project description
This simple django app enables users to upload large files to Django in multiple chunks, with the ability to resume if the upload is interrupted.
The most of the code base belongs to django-chunked-upload of juliomalegria and I would like to thank him for this awesome package.
This app is intented to work with JQuery-File-Upload by Sebastian Tschan (documentation).
License: MIT-Zero.
Demo
If you want to see a very simple Django demo project using this module, please take a look at django-chunk-upload-demo.
Installation
Install via pip:
pip install django-chunk-upload
And then add it to your Django INSTALLED_APPS:
INSTALLED_APPS = (
# ...
'django_chunk_upload',
)
Typical usage
An initial POST request is sent to the url linked to ChunkUploadView (or any subclass) with the first chunk of the file. The name of the chunk file can be overriden in the view (class attribute field_name). Example:
{"my_file": <File>}
In return, server with response with the upload_id, the current offset and the when will the upload expire (expires). Example:
{ "upload_id": "5230ec1f59d1485d9d7974b853802e31", "offset": 10000, "expires": "2013-07-18T17:56:22.186Z" }
Repeatedly POST subsequent chunks using the upload_id to identify the upload to the url linked to ChunkUploadView (or any subclass). Example:
{ "upload_id": "5230ec1f59d1485d9d7974b853802e31", "my_file": <File> }
Server will continue responding with the upload_id, the current offset and the expiration date (expires).
Finally, when upload is completed, a POST request is sent to the url linked to ChunkUploadCompleteView (or any subclass). This request must include the upload_id and the md5 checksum (hex). Example:
{ "upload_id": "5230ec1f59d1485d9d7974b853802e31", "md5": "fc3ff98e8c6a0d3087d515c0473f8677" }
If everything is OK, server will response with status code 200 and the data returned in the method get_response_data (if any).
Possible error responses:
User is not authenticated. Server responds 403 (Forbidden).
Upload has expired. Server responds 410 (Gone).
upload_id does not match any upload. Server responds 404 (Not found).
No chunk file is found in the indicated key. Server responds 400 (Bad request).
Request does not contain Content-Range header. Server responds 400 (Bad request).
Size of file exceeds limit (if specified). Server responds 400 (Bad request).
Offsets does not match. Server responds 400 (Bad request).
md5 checksums does not match. Server responds 400 (Bad request).
Settings
Add any of these variables into your project settings to override them.
DJANGO_CHUNK_UPLOAD_EXPIRATION_DELTA
How long after creation the upload will expire.
Default: datetime.timedelta(days=1)
DJANGO_CHUNK_UPLOAD_PATH
Path where uploading files will be stored until completion.
Default: 'chunk_uploads/%Y/%m/%d'
DJANGO_CHUNK_UPLOAD_TO
upload_to to be used in the Model’s FileField.
Default: DJANGO_CHUNK_UPLOAD_PATH + '/{{ instance.upload_id }}.part'
DJANGO_CHUNK_UPLOAD_STORAGE_CLASS
Storage system (should be a class).
Default: None (use default storage system)
DJANGO_CHUNK_UPLOAD_ABSTRACT_MODEL
Boolean that defines if the ChunkUpload model will be abstract or not (what does abstract model mean?).
Default: True
DJANGO_CHUNK_UPLOAD_NULL_USER
Boolean that defines whether the “user” field of ChunkUpload model can be NULL or not
Default: True
DJANGO_CHUNK_UPLOAD_ENCODER
Function used to encode response data. Receives a dict and returns a string.
Default: DjangoJSONEncoder().encode
DJANGO_CHUNK_UPLOAD_CONTENT_TYPE
Content-Type for the response data.
Default: 'application/json'
DJANGO_CHUNK_UPLOAD_MAX_BYTES
Max amount of data (in bytes) that can be uploaded. None means no limit.
Default: None
Support
If you find any bug or you want to propose a new feature, please use the issues tracker. I’ll be happy to help you! :-)
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