Retrieve the designated element from an array of JSON data in SPLUNK

Question

Retrieve the designated element from an array of JSON data in SPLUNK

As a newcomer to the world of Splunk, I am facing a challenge with handling JSON data. Here is an example of the JSON data I am working with:

"request": {
    "headers": [
        {
            "name": "x-real-ip",
            "value": "10.31.68.186"
        },
        {
            "name": "x-forwarded-for",
            "value": "10.31.68.186"
        },
        {
            "name": "x-nginx-proxy",
            "value": "true"
        }

My goal is to extract the value associated with the property name "x-real-ip" from the JSON data.

javascript json analytics splunk

Answer 1

Answer №1

If you're looking to achieve this task, there are a few approaches you can try out. Here's a method that I often utilize (assuming that you also require the value alongside the name):

index=ndx sourcetype=srctp request.headers{}.name="x-real-ip"
| eval combined=mvzip(request.headers{}.name,request.headers{}.value,"|")
| mvexpand combined
| search combined="x-real-ip*"

This procedure filters out events that do not contain "x-real-ip" in the request.headers{}.name multivalue field.

Subsequently, it merges the two multivalue fields (name and value) into a single mv field separated by the | character.

The results are expanded to view one line at a time.

Lastly, only outcomes containing the value "x-real-ip" are displayed.

To extract the value from the combined field, include the following line:

| rex field-combined "\|(?<x_real_ip>.+)"

You have the flexibility to incorporate any other SPL operations on your data as needed.

Answer 2

If you're looking to achieve this task, there are a few approaches you can try out. Here's a method that I often utilize (assuming that you also require the value alongside the name):

index=ndx sourcetype=srctp request.headers{}.name="x-real-ip"
| eval combined=mvzip(request.headers{}.name,request.headers{}.value,"|")
| mvexpand combined
| search combined="x-real-ip*"

This procedure filters out events that do not contain "x-real-ip" in the request.headers{}.name multivalue field.

Subsequently, it merges the two multivalue fields (name and value) into a single mv field separated by the | character.

The results are expanded to view one line at a time.

Lastly, only outcomes containing the value "x-real-ip" are displayed.

To extract the value from the combined field, include the following line:

| rex field-combined "\|(?<x_real_ip>.+)"

You have the flexibility to incorporate any other SPL operations on your data as needed.

Answer 3

Answer №2

After attempting @Warren's solution, I encountered the following issue:

An error occurred during the 'eval' command: The expression is not well-formed. Expected ).

In order to resolve this problem caused by the {} characters in the mvzip function, you must include a rename statement. Here is the updated query that functions correctly:

index=ndx sourcetype=srctp request.headers{}.name="x-real-ip"
| rename request.headers{}.name AS headerName, request.headers{}.value AS headerValue 
| eval reviewers=mvzip(headerName,headerValue ,"|")
| mvexpand reviewers
| search reviewers="x-real-ip*"

Answer 4

After attempting @Warren's solution, I encountered the following issue:

An error occurred during the 'eval' command: The expression is not well-formed. Expected ).

In order to resolve this problem caused by the {} characters in the mvzip function, you must include a rename statement. Here is the updated query that functions correctly:

index=ndx sourcetype=srctp request.headers{}.name="x-real-ip"
| rename request.headers{}.name AS headerName, request.headers{}.value AS headerValue 
| eval reviewers=mvzip(headerName,headerValue ,"|")
| mvexpand reviewers
| search reviewers="x-real-ip*"

Answer 5

Answer №3

checking for results
| extract max_match=0 "title\":\s\"(?<titletext>[^\"]+)"
| extract max_match=0 "description\":\s\"(?<descriptiontext>[^\"]+)"
| evaluate temp=mvzip(titletext,descriptiontext,"-")
| rename temp as _results
| organize
| discard - _* title*

It is important to provide accurate details when posing a query. Your log records have been depleted in the process.

Answer 6

checking for results
| extract max_match=0 "title\":\s\"(?<titletext>[^\"]+)"
| extract max_match=0 "description\":\s\"(?<descriptiontext>[^\"]+)"
| evaluate temp=mvzip(titletext,descriptiontext,"-")
| rename temp as _results
| organize
| discard - _* title*

It is important to provide accurate details when posing a query. Your log records have been depleted in the process.

Retrieve the designated element from an array of JSON data in SPLUNK

Answer №1

Answer №2

Answer №3

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