Remove array field if empty

Related searches

Please suggest how to remove array field if empty? I have tried below config :

if [tags] == [] {
mutate {
remove_field => ["tags"]
}
}

But getting logstash exception:
[2018-03-01T15:07:56,000][FATAL][logstash.runner ] The given configuration is invalid. Reason: Failed to parse right-hand side of conditional [str]pipeline:31:8:[tags] == []

I didn't know how to remove a field from inside the ruby filter, so when the tags array is empty, I'm setting another field and using to know when to remove the field tags.

ruby {
    code => "event.set('[is_tags_empty]', 'true') if event.get('[tags]').length == 0"
}

if [is_tags_empty] {
    mutate {
        remove_field => ["tags","is_tags_empty"]
    }
}

Remove empty array elements, array_filter: "If no callback is supplied, all entries of input equal to FALSE will be removed." This means that elements with values NULL, 0, '0', '', FALSE, array() will� Remove empty elements from an array in PowerShell. Given various definitions of "empty", I will demonstrate how to remove / filter out empty elements from an

This one worked for me:

ruby {
  code => "if event.get('tags').length == 0 then event.remove('tags') end"
}

How to Remove Empty Values from an Array in PHP, How to remove empty values from an array in PHP typically filters the values of an array using a callback function, however if no callback function is specified,� array_map is for trimming, array_filter is for remove empty values, empty value checks for array_column-2. Remove certain values from array in php. 0.

Check for not null and if array is empty

if [tags] and !([tags][0]) {
    mutate {
        remove_field => ["tags"]
    }
}

Tested on Logstash 7.1

JavaScript, If it is empty, the value “undefined” will be passed. Example: This example is removing undefined, null and empty elements from the array. Unfortunately there is not a simple Array.remove method. So, how do you delete an element from a JavaScript array? Instead of a delete method, the JavaScript array has a variety of ways you can clean array values. You can remove elements from the end of an array using pop, from the beginning using shift, or from the middle using splice.

Program to remove empty array elements in PHP, Method 1: Using array_filter() Function. It is achieved by using array_filter() function. Example: Method 2: Using unset() Function. Another approach is to remove empty elements from array is using empty() function along with the unset() function. Example: NB: Unless there are "holes" in the numeric data and other text such that [num,txt,raw]=xlsread( creates a mismatch between rows returned by data and text vis a vis raw and you need both text and numeric values, there's no reason to use raw and have to do the post-processing cleanup--just read the numeric data as numeric and the empty rows will be imported as NaN in numeric 2D array which

Remove array field if empty 6.1 version - Logstash, Please suggest how to remove array field if empty? I have tried below config : Logstash version is : 6.1.1 if [tags] == [] { mutate { remove_field� all(empty,1) returns a logical row vector where an element is true if all cells in that column are empty. We use this logical vector to index those array elements and set them to the empty array. Assigning an empty array is MATLAB speak for deleting the array element. Deleting complete rows and columns allows to preserve the array shape.

Find the index of the array element you want to remove using indexOf, and then remove that index with splice.. The splice() method changes the contents of an array by removing existing elements and/or adding new elements.

Comments
  • i need this in logstash. link suggests to do in elasticsearch. pls suggest
  • I think you'll have to use the ruby filter, I haven't seen a way to do it otherwise.
  • with ruby code i am not able to check if array is empty and delete it. if found a method empty? in ruby but not working with logstash ruby filter. pls help with ruby code snippet any.]
  • it worked..! thanks alot. :) whats event.set event.get over here ? i think its pure ruby program wrapped with double quotes inside code block of ruby filter. am i correct?
  • This event.set('[is_tags_empty]', 'true') if event.get('[tags]').length == 0 is the ruby program. event.get('[tags]') retrieve the field tags from the event, event.set('[is_tags_empty]', 'true') set the field is_tags_empty in the event to the value true.
  • For more information about the event, see elastic.co/guide/en/logstash/current/event-api.html