Checks whether the given value matches any of the values of the array and excludes the event from the search result if it does not match any value.

ParameterTypeRequiredDefaultDescription
array[a]stringrequired  A string in the format of a valid array followed by []. A valid array can either be an identifier, a valid array followed by . and an identifier, or a valid array followed by an array index surrounded by square brackets. E.g., for events with fields incidents[0], incidents[1], ... this would be incidents[].
valuestringrequired  The exact value of the array to search for.

[a] The argument name array can be omitted.

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A specific syntax applies for this query function, see Array Syntax for details.

Aggregating Array Content

Query
flowchart LR; %%{init: {"flowchart": {"defaultRenderer": "elk"}} }%% repo{{Events}} 0[/Filter/] 1[/Filter/] result{{Result Set}} repo --> 0 0 --> 1 1 --> result
logscale
array:contains("incidents[]", value="Cozy Bear")
| groupBy(host)
Introduction

Given events containing an incidents array:

Event 1 

|--------------|-------------|
| host         | v1          |
| incidents[0] | Evil Bear   |
| incidents[1] | Cozy Bear   |
|--------------|-------------|

Event 2 

|--------------|-------------|
| host         | v15         |
| incidents[0] | Fancy Fly   |
| incidents[1] | Tiny Cat    |
| incidents[2] | Cozy Bears  |
|--------------|-------------|

Find all the events where the field incidents contains the exact value Cozy Bear and group them by which hosts were affected, giving output event:

Step-by-Step

  1. Starting with the source repository events

  2. flowchart LR; %%{init: {"flowchart": {"defaultRenderer": "elk"}} }%% repo{{Events}} 0[/Filter/] 1[/Filter/] result{{Result Set}} repo --> 0 0 --> 1 1 --> result style 0 fill:#ff0000,stroke-width:4px,stroke:#000;

    Extract elements from the array incidents from the field host that match the text Cozy Bear. The items will be output into the host field.

    logscale
    array:contains("incidents[]", value="Cozy Bear")
  3. flowchart LR; %%{init: {"flowchart": {"defaultRenderer": "elk"}} }%% repo{{Events}} 0[/Filter/] 1[/Filter/] result{{Result Set}} repo --> 0 0 --> 1 1 --> result style 1 fill:#ff0000,stroke-width:4px,stroke:#000;

    Group the result events extracted from the array by the host.

    logscale
    | groupBy(host)

  4. Event Result set

Summary and Results

The result is an aggregated count of the array elements matching Cozy Bear.

fieldvalue
hostv1
_count1