regex - Common regular expression for grok matching pattern

Question

I need the common RE for representing the below values

Invoice_IID: 00000000-4164-1638-e168-ffff08d24460
Invoice_IID 00000000-4164-1638-e168-ffff08d24460
invoice iid 00000000-4164-1638-074f-ffff08d24461
<invoice iid="00000000-4164-1638-074f-ffff08d24461"
<invoice iid="00000000-4164-1638-074f-ffff08d24461"
<parent_invoice iid="00000000-4164-1638-074f-ffff08d24461"

I am trying with the below configuration with my grok debugger like

http://grokconstructor.appspot.com/do/match#result

grok { 
  match => { "msg" => "[iI]no*voice[_," "][iI][iI][dD]:? %{UUID:InvoiceIID}" } 
}

I need the common support for all types of content in one Regular Expression

Answer 1

Yes, I got the solution for all above types of data.

matching pattern is:

grok { 
  match => { "msg" => "[<]*[parent_]*[<]*[iI]no*voice[_," "][iI][iI][dD][" "]*:?[" "]*=?[\,"]*%{UUID:InvoiceIID}[",\]*" } 
}