writing grok pattern to split key value pairs

Question

This is my first experience with using grok and elasticsearch. I'm trying to write a grok file to do parse the following line.

2017-07-25 10:48:23,477 [[api-my-app-v1-20.0.0].apiHttpListenerConfig.worker.58] INFO  esb.api-my-app-v1.get-blah.http.response - transactionID=f61b8053-70d2-11e7-b274-3639cc5335d0 creationTime=2017-07-25T10:48:23.254+10:00 txnState=END timeTaken=11

So far I have written this grok...

%{TIMESTAMP_ISO8601:timestamp}\s+%{DATA:thread}\s+%{LOGLEVEL:loglevel}\s+%{JAVACLASS:category}\s+-\s+%{GREEDYDATA:msgbody}

It gives me back this....

{
  "timestamp": [
    [
      "2017-07-25 10:48:23,477"
    ]
  ],
  "YEAR": [
    [
      "2017"
    ]
  ],
  "MONTHNUM": [
    [
      "07"
    ]
  ],
  "MONTHDAY": [
    [
      "25"
    ]
  ],
  "HOUR": [
    [
      "10",
      null
    ]
  ],
  "MINUTE": [
    [
      "48",
      null
    ]
  ],
  "SECOND": [
    [
      "23,477"
    ]
  ],
  "ISO8601_TIMEZONE": [
    [
      null
    ]
  ],
  "thread": [
    [
      "[[api-my-app-v1-20.0.0].apiHttpListenerConfig.worker.58]"
    ]
  ],
  "loglevel": [
    [
      "INFO"
    ]
  ],
  "category": [
    [
      "esb.api-my-app-v1.get-blah.http.response"
    ]
  ],
  "msgbody": [
    [
      "transactionID=f61b8053-70d2-11e7-b274-3639cc5335d0 creationTime=2017-07-25T10:48:23.254+10:00 txnState=END timeTaken=11"
    ]
  ]
}

This is almost what I want. How can I split the msgbody from my current result into key value pairs?

thanks

Answer 1

With the kv filter:

kv { 
   source => "msgbody" 
}

you'll have the key-pair values from the msgbody in fields in your result. Also you won't have to change your grok pattern if the keys change.