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Feature: "watch" mode -> automatic build/push/deploy on save #472

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alexellis opened this issue Jul 24, 2018 · 7 comments · May be fixed by #763
Open

Feature: "watch" mode -> automatic build/push/deploy on save #472

alexellis opened this issue Jul 24, 2018 · 7 comments · May be fixed by #763
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@johnmccabe

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@alexellis
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Expected Behaviour

New feature: file-system watch mode will detect a change in a function handler folder and then automatically build/push/deploy the affected function.

This would be done via the existing OpenFaaS API meaning all backends are supported - faas-fargate, faas-swarm, faas-netes and openfaas-operator.

Similar things are done in entire projects such as skaffold from Google. I know Stefan @stefanprodan is a fan of this project. I believe Skaffold needs a Dockerfile in a set place, we can workaround this by using "faas-cli build --shrinkwrap" or maybe a combination of all of the above.

The basic idea is to allow a "watch" / auto-reloader experience for function development.

Thoughts?
@alexellis
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I was chatting to @johnmccabe about this, we're thinking of adding faas-cli up with an optional --watch flag which would be an alias for the whole workflow of build/push/deploy

@johnmccabe johnmccabe mentioned this issue Aug 16, 2018
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@alexellis
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@johnmccabe how did the initial attempt go with this? How does Docker-Compose handle de-bounce?

@johnmccabe
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Initial PoC worked well, I'll pick this up after work tomorrow and get something pushed up for eyeballs.

@alexellis
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Awesome John.

@alexellis
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@johnmccabe do you still have work in progress for this?

@johnmccabe
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Yeah, needs dusted off and pushed (got side-tracked helping with the minikube stuff) - I can swing back round to this on Sunday after I get VMUG and PHP Scotland out of the way.

@alexellis
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Do you still have a local copy? Anything we should be aware of or watch for?

@johnmccabe johnmccabe linked a pull request Feb 9, 2020 that will close this issue
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[WIP] File watch
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@johnmccabe @alexellis