Madek Media Service

Prototyping

Remove all media_files etc:

TRUNCATE TABLE media_files CASCADE;

Building, Development & Testing this Project

Building

Without AOT

To build run ./bin/clj-uberjar.

Run the uberjar:

java -cp madek-media-service.jar clojure.main -m madek.media-service.main

With AOT

To build run ./bin/clj-uberjar-aot.

Run the uberjar:

java -jar madek-media-service.jar

Development

Running main

clj -m madek.media-service.main

Create some test files in the old store

FactoryGirl.create :research_video_media_entry,  responsible_user_id: '653bf621-45c8-4a23-a15e-b29036aa9b10'

Notes

S3 Upload via Browser

TLDR: pre-signed URLs seems likely to work for AWS and other implementations

https://docs.min.io/docs/upload-files-from-browser-using-pre-signed-urls.html

Meta Data Extraction with Exif

TLDR: seems to work, but not in every case, falls back to full download

• Does ExitTool stop processing a file (or stream) when it reaches the required data? i.e. if the metadata is in the header (or the first bit of the file) will it find it without having to read the whole file? Yes, if possible. See the -fast option.

https://exiftool.org/forum/index.php?topic=7579.0

https://exiftool.org/exiftool_pod.html#PIPING-EXAMPLES

curl -s http://a.domain.com/bigfile.jpg | exiftool -fast - Extract information from an image over the internet using the cURL utility. The -fast option prevents exiftool from scanning for trailer information, so only the meta information header is transferred.

SHA1 in the Browser

https://stackoverflow.com/questions/18586839/read-file-stream-using-javascript-in-web-browser?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa