logstash output to elasticsearch with document_id; what to do when I don't have a document_id? -


i have logstash input use document_id remove duplicates. however, input doesn't have document_id. following plumbs actual document_id through, if doesn't exist, gets accepted literally %{document_id}, means documents seen duplicate of each other. here's output block looks like:

output {         elasticsearch_http {             host => "127.0.0.1"             document_id => "%{document_id}"         } }

i thought might able use conditional in output. fails, , error given below code.

output {         elasticsearch_http {             host => "127.0.0.1"             if document_id {                 document_id => "%{document_id}"             }          } }  error: expected 1 of #, => @ line 101, column 8 (byte 3103) after output {         elasticsearch_http {     host => "127.0.0.1"     if

i tried few "if" statements , fail, why assume problem having conditional of sort in block. here alternatives tried:

if document_id <> "" { if [document_id] <> "" { if [document_id] { if "hello" <> "" {

you're close conditional idea can't place inside plugin block. instead:

output {   if [document_id] {     elasticsearch_http {       host => "127.0.0.1"       document_id => "%{document_id}"     }    } else {     elasticsearch_http {       host => "127.0.0.1"     }    } }

(but suggestion in 1 of other answers use uuid filter too.)


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