DTale -Flask - Heroku - Gunicorn - Deployment problem

[ShoubhikBanerjee]

Hi !

I was trying to deploy a Heroku app build with Flask using Gunicorn.

I have embedded flask as shown in : https://github.com/man-group/dtale/blob/master/docs/EMBEDDED_FLASK.md

My Gunicorn cmd : web: gunicorn app:app --preload -b 0.0.0.0:8080
But facing this issue :

Traceback (most recent call last): File "/app/.heroku/python/bin/gunicorn", line 8, in <module> sys.exit(run()) File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/app/wsgiapp.py", line 58, in run WSGIApplication("%(prog)s [OPTIONS] [APP_MODULE]").run() File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/app/base.py", line 228, in run super().run() File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/app/base.py", line 72, in run Arbiter(self).run() File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/arbiter.py", line 58, in __init__ self.setup(app) File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/arbiter.py", line 118, in setup self.app.wsgi() File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/app/base.py", line 67, in wsgi self.callable = self.load() File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/app/wsgiapp.py", line 49, in load return self.load_wsgiapp() File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp return util.import_app(self.app_uri) File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/util.py", line 405, in import_app raise AppImportError("Failed to find attribute %r in %r." % (name, module)) gunicorn.errors.AppImportError: Failed to find attribute 'app' in 'app'.

Is there any way I can get this solved ?

Thanx in advance :)

[aschonfeld]

@ShoubhikBanerjee heres an example of running D-Tale in gunicorn w/ redis for storage (so all gunicorn workers feed from the same data). Not 100% sure if using Heroku will throw a wrench into things or not. Let me know if this helps and if not I can dig into it deeper.