alt Hacker NewsI'm primarily a Go developer and love the language and will defend it for most use-cases, but to be honest BPF seems like Rust's place to shine.
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I feel like every language has its fans. What invariably happens is that people want their favorite language to work in every situation that they might need to work.
Personally I would choose Rust as well, but I would choose Rust for almost everything I do. I can see why a Go developer would want a similar experience.
I'm also primarily a Go developer, and I will also defend the language in almost all use cases, but I personally feel that C is the best for writing eBPF. I just feel that you get all of the original functionality with C, and you don't have to hack your way around weird issues that you would encounter when using Go or Rust.
Note that we at Bomfather have our userspace code written in Golang and our eBPF code written in C.
But, either way, this is a really cool solution/idea and could make writing eBPF code a lot easier.
Rust is in the same boat, ebpf is C.
Why? What value does Rust add here?
spoken like a true go developer ha
I think the real benefit here is being able to share structures, etc. with userspace and keep them in sync.
If this was compiling the Golang to BPF then yeah, that would feel ridiculous, but given that it's transpiling instead then, assuming that it's generating correct and reasonable code, I think this is certainly fine enough. Especially if you're just writing a proof of concept or something pretty basic, there's no reason not to start here.
If you're doing something like trying to filter 40Gbps of network traffic in eBPF then you'd probably want to consider something more hand-tuned/low-level, but that might well be a premature optimization for all I know.