Heroku download file from s3

The access key identifies your S3 user account, and the secret key is a password-like credential that should be stored securely. Enabling an application to use S3 requires that the application have access to the AWS credentials as well as the name of the bucket to store files.

Because of the sensitive nature of your S3 credentials, you should never commit them to version control.

Instead, set them as the values of config vars for the Heroku apps that will use them. Make sure you create your S3 bucket in the same region as the app that will use it. A single bucket typically stores the files, assets, and uploads for an application. This will clone the git repository to your machine with the latest code. Please note, this will only include branches that you have pushed to Heroku, which in most cases will only be the master branch.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to download multiple files from S3 as Zip format in Rails 5. Ask Question. Asked 4 years, 5 months ago. Active 4 years, 4 months ago. Viewed 3k times. Improve this question.

You may wish to assign another, customised name to the object instead of using the one that the file is already named with, which is useful for preventing accidental overwrites in the S3 bucket. If not, you should provide some method for properly quoting the name in case there are spaces or other awkward characters present. In addition, this is the stage at which you could provide checks on the uploaded file in order to restrict access to certain file types.

For example, a simple check could be implemented to allow only. Finally, in application. In addition, the URL for the profile page has not been defined in this article or companion code. Ideally, for example, after updating the account, the user would be redirected back to their own profile so that they can see the updated information. Everything should now be in place to perform the direct uploads to S3.

To test the upload, save any changes and use heroku local to start the application:. You will need a Procfile for this to be successful. Also remember to correctly set your environment variables on your own machine before running the application locally. If your application is returning errors or other server-based issues , then start your server in debug mode and view the output in the Terminal emulator to help fix your problem. For example, in Flask:. This article covers uploading to Amazon S3 directly from the browser using Python to temporarily sign the upload request.

Although the guide and companion code focuses on the Flask framework, the idea should easily carry over to other Python applications. Log in to submit feedback. As explained here , I could set the file as "public-read" and use the URL I think this is what Flask-S3 does , but I'd rather prefer not to leave free access to the files. It works, but I don't think this is the proper way for some reasons: among them, I should manage the Heroku's filesystem to avoid using up all the space between dynos restart I should delete the images from the filesystem.

This keeps the files private in S3, but generates a temporary, time limited, URL that can be used to download the file directly from S3. That will greatly reduce the amount of work happening on your server, as well as the amount of data transfer being consumed by your server. Something like this:. If you don't like that solution, you should at least look into streaming the file contents from S3 instead of writing it to the file system.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow.