Golang Automatic Reloads

alexedwards.net

30 points·alexedwards··10 comments

That's more of an automatic restart (kill and start the process again) than an automatic reload (update code within the running system). And surely there are non-go-specific tools which can already do that, aren't there?

Yup, such tools exist. I've used peat before for stuff like this:

https://github.com/sjl/peat

CEL is a similar and more generic script: it can do that for any program and works on Linux and Mac.

https://github.com/Dinduks/change-execute-loop

SIGKILL seems a little aggressive for a controlled process restart.

Not to mention the program sigkills itself before it attempts to `exit 0`...

Genuine question - can a process kill itself?

The kill of go-reload was to make sure background processes get cleaned up, but I suspect one of the kill or exit in the close function is superfluous.

> Genuine question - can a process kill itself?

Sure. Send the signal, the signal handler - custom or default - handles it. This works whether the signal comes from another process or its own process.

Or rerun by skelterjohn http://github.com/skelterjohn/rerun

On Windows you can use something like this

http://www.nodesoft.com/foldermonitor

(freeware)

Go also provides a syscall for ReadDirectoryChanges, and one really nice Go library that uses inotify/ReadDirectoryChanges is https://github.com/howeyc/fsnotify

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