Is there a good example or tutorial on how to snap a simple python3 Flask application?
It seems to be a simple task which despite this has me caught in lots of work and perils.
Is there a good example or tutorial on how to snap a simple python3 Flask application?
It seems to be a simple task which despite this has me caught in lots of work and perils.
i dont think there is any tutorial, but i happen to recently have started an opencv demo that is embedded in a HTML page and served through flask here:
perhaps that gives you some hints ā¦So, Iāve finally - after massive issues all over - been able to produce a simple example snap containing a flask application.
The process is as follows:
name: microsample
version: git
summary: A simple flask microservice on 0.0.0.0:8080
description: |
Get service status with: curl http://hostip:8080/ (Will return "Online" if OK)
grade: devel # must be 'stable' to release into candidate/stable channels
confinement: strict # use 'strict' once you have the right plugs and slots
# This helps, for example, build.snapcraft.io to build only on archs we can run on.
architectures:
- build-on: amd64
base: core22
apps:
microsample:
command: bin/flask run -h 0.0.0.0 -p 8080
daemon: simple
restart-condition: always
plugs: [network-bind]
environment:
FLASK_APP: ./server.py
LC_ALL: C.UTF-8
LANG: C.UTF-8
parts:
# This installs flask using python pip.
python-flask:
plugin: python
source: .
python-packages: [ flask ]
# This dumps our sources including server.py
# where we manually have to copy the server.py
# into place.
flask-server:
plugin: dump
source: .
# flask could be installed like this instead in the plugin.
# stage-packages: [ python3-flask ]
organize:
server.py: bin/
Snapping a Flask application refers to packaging it as a Snap, which is a universal Linux package format. Hereās how you can snap a simple Flask application:
sudo apt install snapcraft
csharp
snapcraft init
snap/snapcraft.yaml
file, define the parts and plugins required to build and package your Flask application. Hereās an example snapcraft.yaml for a Flask application:yaml name: my-flask-app version: 0.1 summary: A simple Flask application description: | This is a snap for a simple Flask application.
apps: my-flask-app: command: my-flask-app plugs: - network
parts: my-flask-app: source: . plugin: python python-version: 3 requirements: requirements.txt
flask
snapcraft
sudo snap install my-flask-app_0.1_all.snap
Note: This is a basic example and may not cover all the requirements for your specific Flask application. You may need to consult the Snapcraft documentation or seek help from the Snapcraft community for more complex applications. Iām damn sure it will fix sanp flask aappliccation issue but in case if it does not work you can move samsung handy reparatur berlin for detailed answer.
please do not do (or suggest) that.
the apt based snapcraft is deprecated and heavily outdated, the correct command is:
$ sudo snap install snapcraft --classic