SnmpKit.SnmpMgr.Format (snmpkit v0.6.6)

SNMP data formatting and presentation utilities.

This module provides user-friendly formatting functions for SNMP data types, delegating to the underlying SnmpKit.SnmpLib.Types functions while maintaining a clean SnmpMgr API surface.

All functions work with the 3-tuple format {oid_string, type, value} that SnmpMgr uses throughout the library.

Examples

# Format uptime from SNMP result
{:ok, {_oid, :timeticks, ticks}} = SnmpKit.SnmpMgr.get("router.local", "sysUpTime.0")
SnmpKit.SnmpMgr.Format.uptime(ticks)
# => "5 days, 12 hours, 34 minutes, 56 seconds"

# Format IP address
SnmpKit.SnmpMgr.Format.ip_address(<<192, 168, 1, 1>>)
# => "192.168.1.1"

# Pretty print any SNMP result
{:ok, result} = SnmpKit.SnmpMgr.get("router.local", "sysDescr.0")
SnmpKit.SnmpMgr.Format.pretty_print(result)
# => {"1.3.6.1.2.1.1.1.0", :octet_string, "Cisco IOS Router"}

Summary

Functions

bytes(byte_count)

Formats byte counts into human-readable sizes.

format_by_type(arg1, value)

Automatically formats a value based on its SNMP type.

interface_status(other)

Formats SNMP interface status values into readable strings.

interface_type(other)

Formats SNMP interface types into readable strings.

ip_address(ip_bytes)

Formats IP address bytes into dotted decimal notation.

mac_address(mac)

Formats MAC addresses into standard colon-separated hex format.

pretty_print(arg)

Pretty prints an SNMP result with type-aware formatting.

pretty_print_all(results)

Pretty prints a list of SNMP results.

speed(bps)

Formats network speeds (bits per second) into human-readable rates.

uptime(ticks)

Formats timeticks (hundredths of seconds) into human-readable uptime.

Functions

bytes(byte_count)

Formats byte counts into human-readable sizes.

Examples

iex> SnmpKit.SnmpMgr.Format.bytes(1024)
"1.0 KB"

iex> SnmpKit.SnmpMgr.Format.bytes(1073741824)
"1.0 GB"

format_by_type(arg1, value)

@spec format_by_type(atom(), any()) :: String.t()

Automatically formats a value based on its SNMP type.

This function provides a single entry point for type-aware formatting, automatically choosing the appropriate formatting function based on the type.

Examples

iex> SnmpKit.SnmpMgr.Format.format_by_type(:timeticks, 126691300)
"14 days 15 hours 55 minutes 13 seconds"

iex> SnmpKit.SnmpMgr.Format.format_by_type(:gauge32, 1000000000)
"1 GB"

iex> SnmpKit.SnmpMgr.Format.format_by_type(:octet_string, "Hello")
"Hello"

interface_status(other)

Formats SNMP interface status values into readable strings.

Examples

iex> SnmpKit.SnmpMgr.Format.interface_status(1)
"up"

iex> SnmpKit.SnmpMgr.Format.interface_status(2)
"down"

interface_type(other)

Formats SNMP interface types into readable strings.

Examples

iex> SnmpKit.SnmpMgr.Format.interface_type(6)
"ethernetCsmacd"

iex> SnmpKit.SnmpMgr.Format.interface_type(24)
"softwareLoopback"

ip_address(ip_bytes)

Formats IP address bytes into dotted decimal notation.

Examples

iex> SnmpKit.SnmpMgr.Format.ip_address(<<192, 168, 1, 1>>)
"192.168.1.1"

iex> SnmpKit.SnmpMgr.Format.ip_address({10, 0, 0, 1})
"10.0.0.1"

mac_address(mac)

@spec mac_address(binary() | list() | String.t()) :: String.t()

Formats MAC addresses into standard colon-separated hex format.

Handles both binary and list representations of MAC addresses commonly found in SNMP responses.

Examples

iex> SnmpKit.SnmpMgr.Format.mac_address(<<0x00, 0x1B, 0x21, 0x3C, 0x4D, 0x5E>>)
"00:1b:21:3c:4d:5e"

iex> SnmpKit.SnmpMgr.Format.mac_address([0, 27, 33, 60, 77, 94])
"00:1b:21:3c:4d:5e"

iex> SnmpKit.SnmpMgr.Format.mac_address("\x00\x1B\x21\x3C\x4D\x5E")
"00:1b:21:3c:4d:5e"

pretty_print(arg)

Pretty prints an SNMP result with type-aware formatting.

Takes a 3-tuple {oid_string, type, value} and returns a formatted version with human-readable values based on the SNMP type.

Examples

iex> SnmpKit.SnmpMgr.Format.pretty_print({"1.3.6.1.2.1.1.3.0", :timeticks, 12345678})
{"1.3.6.1.2.1.1.3.0", :timeticks, "1 day, 10 hours, 17 minutes, 36 seconds"}

iex> SnmpKit.SnmpMgr.Format.pretty_print({"1.3.6.1.2.1.4.20.1.1.192.168.1.1", :ip_address, <<192, 168, 1, 1>>})
{"1.3.6.1.2.1.4.20.1.1.192.168.1.1", :ip_address, "192.168.1.1"}

pretty_print_all(results)

Pretty prints a list of SNMP results.

Examples

iex> results = [
...>   {"1.3.6.1.2.1.1.3.0", :timeticks, 12345678},
...>   {"1.3.6.1.2.1.1.1.0", :octet_string, "Router"}
...> ]
iex> SnmpKit.SnmpMgr.Format.pretty_print_all(results)
[
  {"1.3.6.1.2.1.1.3.0", :timeticks, "1 day, 10 hours, 17 minutes, 36 seconds"},
  {"1.3.6.1.2.1.1.1.0", :octet_string, ""Router""}
]

speed(bps)

Formats network speeds (bits per second) into human-readable rates.

Examples

iex> SnmpKit.SnmpMgr.Format.speed(100_000_000)
"100.0 Mbps"

iex> SnmpKit.SnmpMgr.Format.speed(1_000_000_000)
"1.0 Gbps"

uptime(ticks)

Formats timeticks (hundredths of seconds) into human-readable uptime.

Examples

iex> SnmpKit.SnmpMgr.Format.uptime(12345678)
"1 day, 10 hours, 17 minutes, 36 seconds"

iex> SnmpKit.SnmpMgr.Format.uptime(4200)
"42 seconds"