Get timestamp from your field

[akeelow]

The service writes logs in a special way. Part of the time is specified in the file name 23032807.log (yyMMddHHH). Minutes, seconds and microseconds are written inside the log 03:42.370003 (mm:ss.SSS).

I created such a filter.conf for logstash:

filter {
    if "onec" in [tags] {
        grok {
            match => { "message" => "%{NUMBER:num_min}:%{BASE10NUM:num_sec}-%{WORD:duration},%{WORD:event1c},%{WORD:level_event},process=%{WORD:process}" }
            match => { "[log][file][path]" => "%{NUMBER:logfilename}.log"}
            break_on_match => false
        }
        mutate {
            add_field => { "fieldTime" => "%{logfilename}%{num_min}%{num_sec}" }
        }
        date {
            match => ["fieldTime", "yyMMddHHmmss.SSS"]
            timezone => "Asia/Almaty"
            locale => "kz"
            target => "@timestamp"
        }
    }
}

It turns out such a document in kibana:

{
  "@timestamp": [
    "2023-03-28T04:03:43.871Z"
  ],
  "@version": [
    "1"
  ],
  "@version.keyword": [
    "1"
  ],
  "agent.ephemeral_id": [
    "d601fabe-d38a-440c-9bf5-fdbcc5aab055"
  ],
  "agent.ephemeral_id.keyword": [
    "d601fabe-d38a-440c-9bf5-fdbcc5aab055"
  ],
  "agent.id": [
    "246a153a-35c7-4919-81e0-0e1260a371ac"
  ],
  "agent.id.keyword": [
    "246a153a-35c7-4919-81e0-0e1260a371ac"
  ],
  "agent.name": [
    "BEdev1c2"
  ],
  "agent.name.keyword": [
    "BEdev1c2"
  ],
  "agent.type": [
    "filebeat"
  ],
  "agent.type.keyword": [
    "filebeat"
  ],
  "agent.version": [
    "8.6.2"
  ],
  "agent.version.keyword": [
    "8.6.2"
  ],
  "duration": [
    "0"
  ],
  "duration.keyword": [
    "0"
  ],
  "ecs.version": [
    "8.0.0"
  ],
  "ecs.version.keyword": [
    "8.0.0"
  ],
  "event.original": [
    "03:42.370003-0,EXCP,0,process=rphost,OSThread=9948,Exception=d294e384-7ea6-49c6-be96-f3a6e3de1242,Descr='LoadComponent(liccspr):\nd294e384-7ea6-49c6-be96-f3a6e3de1242: Ошибка загрузки компоненты liccspr: 126(0x0000007E): The specified module could not be found. '"
  ],
  "event.original.keyword": [
    "03:42.370003-0,EXCP,0,process=rphost,OSThread=9948,Exception=d294e384-7ea6-49c6-be96-f3a6e3de1242,Descr='LoadComponent(liccspr):\nd294e384-7ea6-49c6-be96-f3a6e3de1242: Ошибка загрузки компоненты liccspr: 126(0x0000007E): The specified module could not be found. '"
  ],
  "event1c": [
    "EXCP"
  ],
  "event1c.keyword": [
    "EXCP"
  ],
  "fieldTime": [
    "230328070342.370003"
  ],
  "fieldTime.keyword": [
    "230328070342.370003"
  ],
  "host.name": [
    "BEdev1c2"
  ],
  "host.name.keyword": [
    "BEdev1c2"
  ],
  "input.type": [
    "filestream"
  ],
  "input.type.keyword": [
    "filestream"
  ],
  "level_event": [
    "0"
  ],
  "level_event.keyword": [
    "0"
  ],
  "log.file.path": [
    "D:\\1C\\logs\\rphost_8612\\23032807.log"
  ],
  "log.file.path.keyword": [
    "D:\\1C\\logs\\rphost_8612\\23032807.log"
  ],
  "log.flags": [
    "multiline"
  ],
  "log.flags.keyword": [
    "multiline"
  ],
  "log.offset": [
    9319
  ],
  "logfilename": [
    "23032807"
  ],
  "logfilename.keyword": [
    "23032807"
  ],
  "message": [
    "03:42.370003-0,EXCP,0,process=rphost,OSThread=9948,Exception=d294e384-7ea6-49c6-be96-f3a6e3de1242,Descr='LoadComponent(liccspr):\nd294e384-7ea6-49c6-be96-f3a6e3de1242: Ошибка загрузки компоненты liccspr: 126(0x0000007E): The specified module could not be found. '"
  ],
  "message.keyword": [
    "03:42.370003-0,EXCP,0,process=rphost,OSThread=9948,Exception=d294e384-7ea6-49c6-be96-f3a6e3de1242,Descr='LoadComponent(liccspr):\nd294e384-7ea6-49c6-be96-f3a6e3de1242: Ошибка загрузки компоненты liccspr: 126(0x0000007E): The specified module could not be found. '"
  ],
  "num_min": [
    "03"
  ],
  "num_min.keyword": [
    "03"
  ],
  "num_sec": [
    "42.370003"
  ],
  "num_sec.keyword": [
    "42.370003"
  ],
  "process": [
    "rphost"
  ],
  "process.keyword": [
    "rphost"
  ],
  "tags": [
    "onec",
    "beats_input_codec_plain_applied",
    "_dateparsefailure"
  ],
  "tags.keyword": [
    "onec",
    "beats_input_codec_plain_applied",
    "_dateparsefailure"
  ],
  "_id": "n8JjJocBsYhuK8iyIjpK",
  "_index": "onec-2023.03",
  "_score": null
}

The date does not match the timestamp and an error is displayed

Can you tell me how to fix the filter, so that the time of logging replaces the timestamp?

[Badger]

@akeelow

Can you tell me how to fix the filter, so that the time of logging replaces the timestamp?

You have to match the entire field in a date filter. SSS only matches 3 digits of sub-second accuracy, you need to match six. Try match => ["fieldTime", "yyMMddHHmmss.SSSSSS"]

That should result in "@timestamp" => 2023-03-28T01:03:42.370Z,. You can search the forums for ways to get micro- or nano-second accuracy parsing.