Roadmap suggestion: Prometheus integration about irtt HOT 3 OPEN

It sounds like a useful addition, but I'm trying to do it keep the binary size down so irtt can be run on embedded devices.

If I compile the binary as is, the size is 3983781. If I compile referencing the prometheus libs, the size increases 10049128. So, it's not something I would add by default. It could be done with build tags. Another option is to write a separate program to take the json and do whatever you want to do with prometheus separately.

I'll leave the issue open in case someone wants to work on it...

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Re: Seperate program taking JSON, I did start experimenting with that, but quickly found it would be nice if irtt codebase was made more friendly for use as a go library.

For example, I thought I the obvious easy solution would be to Unmarshal into the JSON struct from your codebase, but that failed miserably ( I can't remember the error now since I abandoned that test code but something like "unable to unmarshal text into irtt.Time") so I ended up having to write up my own structs.

Also in general, making it easier to call measurement runs directly from go instead of having to call-out to exec.command()

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Right, it could be useful. If someone writes it and keeps it opt-in with build tags I'll consider pulling that in...

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