WorkDir.Read().ID(ctx) under the hood

[regal rivet]

Hi just editing a live stream I did yesterday on the new Go SDK and there were a few bits that I could make work but did not really understand what they were doing.

With the following code

client.Host().Workdir().Read().ID(ctx)

This obtains a directory ID that I can use in the mount points for containers but under the hood what does this actually do. Is it reading the contents of the and copying this as a snapshot into the build kit container so that it can be mounted as a volume. Or does it just create a reference to the directory so that every time I use this ID the receiver gets the current directory state not the state at the time Read was called?

[wanton sable]

Hi,
It's a reference to the layer in Buildkit. I'm 99% sure it's a reference to the layer at the time you did the Read()

[regal rivet]

Awesome thank you

[verbal owl]

There's experimentation currently on hiding that ID: https://github.com/dagger/dagger/pull/3598

[sharp vale]

@regal rivet that was a great video, thank you for sharing it! We're all watching it and making a list of things to improve in time for next sunday 🙂

[regal rivet]

I am just editing things up to cut out the stuff that has no context when there is not a live audience will make things way more brief. Also adding some like text to the screen for bits I did not fully understand when coding it.

[sharp vale]

Btw @regal rivet is there a way to see the livechat when not watching live?

(to have context on the questions you're answering)

It seems different from the regular youtube comments

[regal rivet]

It should be there, TBH most stuff was unrelated but there is some good comments.

In general I really liked the SDK, I have a bunch of questions I want to ask about how you build Packages and things like that but so far I really like it.