change null value from database for one field using logstash and insert into Elasticsearch -


i replace value of field null other value. field obtained using logstash jdbc plugin database. here config file.

input { jdbc { jdbc_connection_string => "url" jdbc_user => "user" jdbc_password => "pswd" jdbc_driver_library => "./ifxjdbc-3-50-jc7.jar" jdbc_driver_class => "com.informix.jdbc.ifxdriver" statement =>  ["select st1.name s_name, st1.typ, st2.name comp_name, zen.s_id, zen.comp_id, zen.conc_1, zen.conc_2 sub_zen zen join sub st1 on st1.id = zen.s_id join sub st2 on st2.id = zen.comp_id"]}}

what here replace nil value (by default typ nil) p. tried far.

filter{ mutate {  gsub => [    "typ", "nil", "p"  ]  } }

does not work.

i tried throws error

filter{ ruby {  code => "  if event.get('typ') == nil  event.set('typ') == p  end "  } }

can here. how can fix this.

if field null / nil, might jdbc input not putting field in event. in case (or if can still try following) can try this:

if !("" in [typ]) {     mutate {         add_field => { typ => "p" }     } }

see: logstash check if field exists


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