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AP's avatar
AP
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Apr 11, 2018

Commenting in External Datagroup

Hi,

 

I've just seen the use of commenting (preceding hash) in Data Groups (External in this case) in a client's environment. Having not come across this or considered using this previously for reasons that have always seemed obvious to me (i.e. the records won't be omitted. They will be parsed), I'm now questioning and want to be certain.

 

Will the class command intepret everything in the string as I expect (as a pure string) or will the hash actually comment out / omit the line?

 

Thanks

 

application delivery
iRules
LTM
  • AP's avatar
    AP
    Icon for Nimbostratus rankNimbostratus
    Apr 11, 2018

    EDIT: Actually just noticed that the hash is outside the double quote. So:

    "host.xyz/uri1" := "internalhost.xyz/uri2",

    Slightly different since the Class command wouldn't even see the Hash. My doubt still remains however, does the hash have any bearing on how the external data group is parsed?

  • AP's avatar
    AP
    Icon for Nimbostratus rankNimbostratus
    May 09, 2018

    I got around to testing this out. The answer is that the preceding hash does effectively "comment" out a record in an external datagroup. At least in a string external datagroup. I didn't test other types.

    So a class command will not return a name or value if the line begins with a .

    e.g.

    "/uri1" := "hash",