Splunk Search

How to extract and download a field of array from an event?

hantaliu
New Member

I have an event which is constructed like the following:

 

{
   name: string,
   time: string,
   duration: string,
   logs: JSONObjects[]
}

 

When I download the event, I just want the logs which is everything inside [] but without the head part which is "{logs:" and the last "}"

To do that how do I construct the search query? 

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rymundo_splunk
Splunk Employee
Splunk Employee

Hi, you could use something like spath to process the json and then pick the logs array out of the resultant object.  Maybe something like this:


|makeresults
| eval json="{\"name\":\"json_name\", \"logs\":[{\"name\":\"log1\"}, { \"name\":\"log2\"}]}",
output_log_array=spath(json,"logs{}"),
output_log_names=spath(json,"logs{}.name")

I added a second example with output_log_names to show how you would extract particular fields within the array json into their own multivalued field. 

 

rymundo_splunk_0-1655944499206.png

 

 

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