Use bb uberjar

As written in "the book" ;-)

also on that note any recommendation for pre downloading the pod during the container image build time?

jar runs fine now, just that it downloads the pod on the first run. i have a usual bb.edn which declares the pod

This is a complicated are you may want to leave out in the workshop. It's best to copy the pod for your OS to a directory and then set BABASHKA_PODS_DIR to that directory in your lambda. Perhaps @U054AT6KT can chime in here as well as he has support for this in #C04PSBFMMDJ I think

i could do a RUN bb -e "(load-pod ...)" maybe?

that also works, but then you would need to change your code

would it need a change? this is just to nudge the download

Oh right

that works

You can also do this outside of docker (blambda doesn't use docker I think) with:

BABASHKA_PODS_OS_NAME=Linux (or Mac OS X or any other value returned by Java's os.name property)
BABASHKA_PODS_OS_ARCH=aarch64 (or amd64 or any other value returned by Java's os.arch property)

+ BABASHKA_PODS_DIR

my slight issue there is the build arch and the container arch needs to be the same. triggering the download inside the build env should align all the archs

yes, but tweaking those env vars + pods dir will also take care of that

right, will poke around

seeing @U054AT6KT’s talk yesterday, quite iffy to ask him docker things 😛

#C01UQJ4JC9Y uses docker too ;)

and it has support for that stuff too

but the load-pod approach should work I think, if you're able to build for the right architecture. e.g. can you build an arm64 docker image on a mac amd64?

yeah these are some good sources to read up on

or would you build on amazon?

foe the workshop planning a simpler, self contained thing which can be reasoned about and make better things later

this would be built locally

generally the pattern i follow is let the target arch things be a problem of image builder and tweak it externally instead of the cross product of the binaries and targets

this works:

FROM babashka/babashka

WORKDIR /opt

COPY todos.jar .

RUN bb -e "(babashka.pods/load-pod 'org.babashka/go-sqlite3 \"0.1.0\")"

ENTRYPOINT ["bb", "todos.jar"]

Holy Lambda is quite awesome and I would highly recommend it for people wanting to run production workloads. My aversion to Docker is a personal problem that I'm working on in therapy. 😉

More seriously, I have a philosophical objection to using a container image on a lambda. It makes things opaque and also huge, and I don't see the benefits of doing it unless your lambda artifacts are so huge that you're running into the 200 MB limit, in which case you have other problems, IMO.

on a side note, https://github.com/jmglov/blambda/pull/5 might interest you @U054AT6KT

But I'm a grumpy old man who's been running Clojure on Lambda since 2015, so take my opinions with a grain of salt. 😉

yeah im not building the image for a lambda anyways, this is more about a general use case

Makes sense. 🙂

There's this to bundle bb + a program into one executable: https://github.com/babashka/babashka/wiki/Self-contained-executable

Although it's interesting, I would avoid it. There's better ways to distribute your programs e.g. via brew with a dependency on bb

or via #C0400TZENE7

Ok - thanks, will think on my options.

The disadvantage of producing your own graalvm binary or bundled bb binary is that you have to produce one for every OS + architecture

Yeah - I agree. I’m just looking for a way to share some bb tools I have written with some nodejs developers I work with. They probably only have the stock jvm on their macs and nothing more Java related. They do use brew though.

(want to make it as “one-shot” as possible for them)

ok, for brew I think you might want to look at how neil is published

Yep! I was just looking at that as it was used as the example in the bbin repo

https://github.com/babashka/neil https://github.com/babashka/homebrew-brew/blob/main/Formula/neil.rb

ah yes, you can ask your devs to install bbin from brew:

brew install babashka/brew/bbin

bbin install your-script-clj

installing bbin will also install bb automatically

Ok - thank you, I’m going to try this route.