Re: A MIB file dilemma

Hi Sverre,

On 25.10.2012 08:50, Sverre Moe wrote:
> The file system scenario was the closest example I could think of. 
> The device I am creating a MIB file for has ALOT of parameters which is organized in a hierarchy must like a file system. Each node in the path can have a few scalars(parameters), but most of them are at the end of a path (a subsystem).

I see, thanks for the explanation.

>
> My application running against a test system created a MIB file with almost 5000 scalars and aprox 500 groups. 
OK.

>
> According to the SMIv2 (RFC 2578) descriptor names must be unique and mnemonic. Using a hash is not exactly very mnemonic.
I know. But since it seems that you yourself cannot come up with 5000 unique and mnemonic names (at least not
programmatically/automatically) while being limited to 64 chars, a hash at least meets the "unique" requirement.

Regards,
 Heiko

>
>
> /Sverre
>
> ----- Original Message ----- 
>
> Fra: "Heiko Gerstung" <[email protected]> 
> Til: [email protected] 
> Sendt: 24. oktober 2012 16:00:25 
> Emne: Re: A MIB file dilemma 
>
>
> On 24.10.2012 14:07, Sverre Moe wrote: 
>> I have come up with the following hack for names over 64 characters. I'm not sure if this hack is a very good solution. 
>>
>> Truncate in the middle with the number of characters over 64 (+2) and replace it with "-". 
>>
>>
>> std::string tmp_string = name; 
>> const int length = tmp_string.length(); 
>> if (length > 64) { 
>>
>> const int half = length / 2; //We truncate in the middle. 
>>
>> const int numberOff = (length - 64) + 2; //The number of characters to truncate. 
>> const std::string dash = "-"; 
>> tmp_string = tmp_string.replace(half, numberOff, dash); 
>> } 
>>
>>
> Sverre, 
>
> the stuff you seem to want to do with a MIB scares the hell out of me ;-) ... Not sure what you want to achieve with that 
> (creating an SNMP file system). However, maybe you should take the MD5 hash of the full path (echo $FILENAME | md5sum) and 
> use it as the name of the object and (for better readability....) add a comment "-- this is file /etc/hosts --" or something 
> similar that helps you to find out which object is which file ... 
>
> Again: for all the possible things that I could come up with as a reason why you are doing this, I would see a better 
> (non-MIB "abusing" :-)) alternative. But: what do I know :-) 
>
> Regards, 
> Heiko 
>
> P.S.: ... 
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