Replace timestamp with actual time from the log

[arvind297]

Hi,
We are ingesting the log which is in the below format.

2019-01-17T19:01:48.440361Z D [2027:rrc_poll] {t: 3e3dc5ce-0569-11e9-b17d-06a912e3abd4} connection -- update 1 of 1 existing devices, offset 0
2019-01-17T19:01:48.559861Z I [2027:rrc_poll] {t: 3e3dc5ce-0569-11e9-b17d-06a912e3abd4} client -- response -- Status 200

Below filter is being used

filter {
if "yellow" in [tags] {
grok {
match => ["message", "%{DATA:status}: %{YEAR:year}-%{MONTHNUM:month}-%{MONTHDAY:monthday}T%{TIME:time}Z: %{GREEDYDATA:detailed-message}"]
}
mutate {

gsub => ["time","\d\d\d$",""]

                   add_field => {
                           "timestamp" => "%{year}-%{month}-%{monthday}T%{time}Z"
                   }
           }
           date {
                   match => ["timestamp", "yy-MM-dd:HH:mm:ss,SSSZ", "ISO8601"]
                   target => "@timestamp"
           }
           mutate {
                   remove_field => ["month", "monthday", "year", "time", "detailed-message"]
           }
   }

}

We need to change the timestamp with actual time the logs got generated.
Can anyone please suggest me on the changes to be done in the filter.

[Badger]

You are making this far too complicated.

grok { "match" => { "message" => [ "^%{NOTSPACE:ts}" ] } }
date { match => [ "ts", "ISO8601"] }

Done.

"@timestamp" => 2019-01-17T19:01:48.440Z,