db obfuscation how-to?

[Peter Neorr]

Hello All,

I'm looking for guidance on using the 'stardog data obfuscate' command.  I only want to obfuscate the string literals, not URIs, so that I will be able to still query the data later.  But I can't seem to get the -config option working.  Some googling around led me to some example config files such as this one:

https://github.com/Complexible/stardog-examples/blob/master/config/obfuscation.ttl

However, when I use this config (unchanged) I always get the error shown below.  

> stardog data obfuscate --format TRIG super-secret-data output.trig --named-graph=ALL -config obfuscation.ttl

ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.

There was an error parsing the obfuscation configuration for the export

I saw another post suggesting I try the obsConfig.ttl that came with my distro.  I found one bundled with an older v3.0 distribution and that produced the same error.  My v4.0.3 distro doesn't seem to include an example.

Any hints or tips are appreciated. 

Regards,

Peter Neorr

[Zachary Whitley]

it looks like there's only a single dash on the 'config' option. Should be a double dash '--config'.

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[Zachary Whitley]

I also noticed that there is a "=" in the '--named-graph' that according to the docs shouldn't be there. It is possible that the cli argument parsing lib being used accepts an equals.  I ran the command that you sent with adding the dash and it didn't complain but I'm not sure what the command might be doing with that option so it might not be doing what you expect.

see 'stardog help obfuscate' for the correct argument construction

The following construction works for me and follows the format in the help file.

$> stardog data obfuscate --config obfuscation.ttl --format TRIG --named-graph ALL -- super-secret-data output.trig

[Peter Neorr]

Thanks for the extra set of eyes Zachary.  

However, your construction gives me the same error:

> stardog data obfuscate --config obsfuscation.ttl --format TRIG --named-graph ALL -- super-secret-data output.trig

ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.

There was an error parsing the obfuscation configuration for the export

I'm am using windows.  I wonder if there any funny business happening with how my "shell" is handling command line arguments.  

Anyway, I'm going to switch strategies and see if I can just use a sparql query to change every string literal in my database to "foobar".  That might work for my purposes.

Thank You,

Peter Neorr

[Zachary Whitley]

Just a sec. seems like I got something wrong as well. (I have to pass a user/password) and I must have messed something up. It's working there's just something a little off.

[Zachary Whitley]

What is the exact command you're sending? Are you running it under cmd.exe or cygwin bash?

[Zachary Whitley]

Sorry for the obvious question but is the obfuscation.ttl configuration file in the same directory where you're running the command? If it can't find the config file it will print "There was an error parsing the obfuscation configuration for the export" rather than a "file not found".

[Peter Neorr]

No problem.  Yes the config file is in the same directory.  I'm using cmd.exe.  The exact command is:

   stardog data obfuscate --config obsfuscation.ttl --format TRIG --named-graph ALL -- cyber-reasoner output.trig

On a side note, although I would eventually really like to be able to use the obfuscate feature, my alternative strategy of using sparql to update every xsd:string to "foobar" worked pretty well.  

-Peter

[Zachary Whitley]

Looks like I made a typo in the config file name. It should be  "obfuscation.ttl" not "obsfuscation.ttl. My bad. 

[Peter Neorr]

Oops.  I was making the same mistake.  But it doesn't matter.  Same error for me after fixing it:

  >stardog data obfuscate --config obfuscation.ttl --format TRIG --named-graph ALL -- cyber-reasoner output.trig

  ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.

  There was an error parsing the obfuscation configuration for the export

-Peter

[Zachary Whitley]

Ok, I think I've got it. Try passing the full path to the config file. This doesn't work for me

    stardog data obfuscate --config obfuscation.ttl --format TRIG --named-graph ALL -- mydb output.trig

but

    stardog data obfuscate --config /home/myhome/downloads/obfuscation.ttl --format TRIG --named-graph ALL -- mydb output.trig

works

[Peter Neorr]

Eureka!  That was it!  Using the full path to the config file worked for me too.

Thanks a million!

-Peter