Combine several fields using ruby/merge/aggregate

[akhilsharma.in (Akhil Sharma)]

Below is the sample log which I get as an output:

{
"field1": {
--content--
{},
,
}
"field2": {
--content--
{},
,
}
"field3": {
--content--
{},
,
}
}

I want to combine all the fields so that I see output in one single field, like below -

{
"OneField":
{
--content of field1 + field2 + field3--
{},
,
}
}

Please help out with an example. Would be great.

[Badger]

Can you provide examples that are valid JSON for both the input and result? It's really unclear what you want.

[akhilsharma.in (Akhil Sharma)]

Hi Badger - Below I have pasted one log. Please see:

{
"winlog": {
"opcode": "Info",
"keywords": [
"Audit Success"
],
"api": "wineventlog",
"record_id": 8217123,
"event_data": {
"TargetDomainName": "Domain",
"TargetUserName": "Patrik",
"TargetUserSid": "S-1-5-21-2706447373-3929271640-2302363577-347960",
"TargetLogonId": "0xc624c9e",
"LogonType": "3"
},
"process": {
"thread": {
"id": 80452
},
"pid": 1408
},
"provider_name": "Microsoft-Windows-Security-Auditing",
"task": "Logoff",
"computer_name": "hostname",
"provider_guid": "{54849625-5478-4994-A5BA-3E3B0328C30D}",
"channel": "Security",
"event_id": 4634
},
"@timestamp": "2019-07-03T14:46:57.188Z",
"ecs": {
"version": "1.0.0"
},
"log": {
"level": "information"
},
"event": {
"kind": "event",
"code": 4634,
"action": "Logoff",
"created": "2019-07-03T14:47:07.060Z"
},
"message": "An account was logged off.\n\nSubject:\n\tSecurity ID:\t\tS-1-5-21-2706447373-3929271640-2302363577-347960\n\tAccount Name:\t\tpatrik\n\tAccount Domain:\t\t\n\tLogon ID:\t\t0xC624C9E\n\nLogon Type:\t\t\t3\n\nThis event is generated when a logon session is destroyed. It may be positively correlated with a logon event using the Logon ID value. Logon IDs are only unique between reboots on the same computer.",
"@version": "1",
"agent": {
"version": "7.1.1",
"ephemeral_id": "679c7668-8bec-4026-9e94-87a9fbbe945f",
"type": "winlogbeat",
"id": "d7176a05-dd6b-41a7-80a2-0cf04fb9fd79",
"hostname": "hostname"
}
}

Here we have got several fields:

1. winlog
2. ecs
3. event
4. @version
5. log
6. agent
7. message
8. @timestamp

I want to combine all these fields and make it as one field. Can you please help me with this requirement?

[Badger]

What do you mean by "make it one field"? Do you want to concatentate the strings? Concatentate with a separator? Make them an array? Insert them into a hash?