snmpa_error_io(3erl)

💖 snmpa_error_io — your lil' stdio error reporter 💖

okay so real talk, this is snmpa_error_io, straight out of the Erlang module definitions crew (3erl, iykyk). It's a tiny module with a big job, and honestly? It ate.

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✨ NAME ✨

snmpa_error_io — functions for reporting SNMP errors on stdio 🎀

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🌸 DESCRIPTION 🌸

okay bestie, here's the tea. The module snmpa_error_io implements the snmp_error_report behaviour (peep snmpa_error_report for the whole vibe) — and it's got two callback functions that get called whenever somebody needs to report SNMP errors. Two. Iconic little duo. 👑

So what does it actually do? This module is your simple, no-drama mechanism for reporting SNMP errors: the errors get written to stdout using the io module. That's it. That's the whole thing. It's literally provided as a simple example — the plain-Jane reference implementation, and we respect her for it. 💅

lowkey important though: this module needs to be explicitly configured, so go look at snmpa_error and the configuration parameters before you come crying to me that nothing's printing. fr fr. 🙈

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🔥 EXPORTS 🔥

🦋 config_err(Format, Args) -> void()

Types:

Format = string()
Args = list()

So this one gets called if an error pops off during the configuration phase — like, say, a syntax error shows up in a configuration file. Classic config era behavior. 😭

Format and Args are exactly as in io:format(Format, Args). No cap, no extra seasoning. ✨

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🧚 user_err(Format, Args) -> void()

Types:

Format = string()
Args = list()

And this one is the runtime bestie: it gets called if a user related error happens at run-time — for example, if a user defined instrumentation function returns erroneous. Not me getting a callback because my instrumentation function was acting up 💀

Format and Args are as in io:format(Format, Args). Same deal, same exact signature, keep it verbatim bestie. 🫶

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⭐ tiny reminder for the group chat: both of these just want Format as a string() and Args as a list(), and both hand off to io:format(Format, Args) — so if your formatting looks weird, that's an io:format conversation, not a me conversation. 🌈

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🎀 sign-off 🎀

and that's the whole page, bestie — no missing bits, no skipped flags (there aren't any options here, she's a minimal queen 👑). This absolute gem comes courtesy of Ericsson AB, part of snmp 5.13.5, dated right there on the snmpa_error_io(3erl) footer. Obsessed. Go configure it properly and slay. 💜🌸✨