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Comment: updated info re function use in calculate

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  • The expression must be a valid perl statement and return exactly one value.
  • The tokens $r, and CVAR0 to CVAR9 are interpreted by NMIS; everything else is perl.
  • Defining and using local variables with my is ok, but don't attempt to change any global NMIS variables.
  • "CVAR1=some_snmp_var;" defines what SNMP object CVAR1 is supposed to hold. The parser understands CVAR0 to CVAR9 for a total of 10 captures.
  • You can use functions that were defined elsewhere in NMIS in your calculate expression.
    You will likely have to include the full module namespace in the function call, e.g. func::beautify_physaddress(...).
    Only functions without side-effects should be used.
  • "return $r/$CVAR1;" accesses the value of CVAR1 in an expression. The variable "$r" represents the SNMP variable that the calculate expression is attached to.

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