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uuid

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uuid

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The uuid filter allows you to generate a UUID and add it as a field to each processed event.

This is useful if you need to generate a string that’s unique for every event, even if the same input is processed multiple times. If you want to generate strings that are identical each time a event with a given content is processed (i.e. a hash) you should use the fingerprint filter instead.

The generated UUIDs follow the version 4 definition in RFC 4122) and will be represented as a standard hexadecimal string format, e.g. "e08806fe-02af-406c-bbde-8a5ae4475e57".

Synopsis

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This plugin supports the following configuration options:

Required configuration options:

uuid {
    target => ...
}

Available configuration options:

Setting	Input type	Required	Default value
`add_field`	hash	No	`{}`
`add_tag`	array	No	`[]`
`overwrite`	boolean	No	`false`
`periodic_flush`	boolean	No	`false`
`remove_field`	array	No	`[]`
`remove_tag`	array	No	`[]`
`target`	string	Yes

Details

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`add_field`

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Value type is hash
Default value is {}

If this filter is successful, add any arbitrary fields to this event. Field names can be dynamic and include parts of the event using the %{field}.

Example:

    filter {
      uuid {
        add_field => { "foo_%{somefield}" => "Hello world, from %{host}" }
      }
    }
[source,ruby]
     You can also add multiple fields at once:
    filter {
      uuid {
        add_field => {
          "foo_%{somefield}" => "Hello world, from %{host}"
          "new_field" => "new_static_value"
        }
      }
    }

If the event has field "somefield" == "hello" this filter, on success, would add field foo_hello if it is present, with the value above and the %{host} piece replaced with that value from the event. The second example would also add a hardcoded field.

`add_tag`

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Value type is array
Default value is []

If this filter is successful, add arbitrary tags to the event. Tags can be dynamic and include parts of the event using the %{field} syntax.

Example:

    filter {
      uuid {
        add_tag => [ "foo_%{somefield}" ]
      }
    }
[source,ruby]
     You can also add multiple tags at once:
    filter {
      uuid {
        add_tag => [ "foo_%{somefield}", "taggedy_tag"]
      }
    }

If the event has field "somefield" == "hello" this filter, on success, would add a tag foo_hello (and the second example would of course add a taggedy_tag tag).

`overwrite`

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Value type is boolean
Default value is false

If the value in the field currently (if any) should be overridden by the generated UUID. Defaults to false (i.e. if the field is present, with ANY value, it won’t be overridden)

Example:

   filter {
      uuid {
        target    => "@uuid"
        overwrite => true
      }
   }

`periodic_flush`

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Value type is boolean
Default value is false

Call the filter flush method at regular interval. Optional.

`remove_field`

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Value type is array
Default value is []

If this filter is successful, remove arbitrary fields from this event. Fields names can be dynamic and include parts of the event using the %{field} Example:

    filter {
      uuid {
        remove_field => [ "foo_%{somefield}" ]
      }
    }
[source,ruby]
     You can also remove multiple fields at once:
    filter {
      uuid {
        remove_field => [ "foo_%{somefield}", "my_extraneous_field" ]
      }
    }

If the event has field "somefield" == "hello" this filter, on success, would remove the field with name foo_hello if it is present. The second example would remove an additional, non-dynamic field.

`remove_tag`

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Value type is array
Default value is []

If this filter is successful, remove arbitrary tags from the event. Tags can be dynamic and include parts of the event using the %{field} syntax.

Example:

    filter {
      uuid {
        remove_tag => [ "foo_%{somefield}" ]
      }
    }
[source,ruby]
     You can also remove multiple tags at once:
    filter {
      uuid {
        remove_tag => [ "foo_%{somefield}", "sad_unwanted_tag"]
      }
    }

If the event has field "somefield" == "hello" this filter, on success, would remove the tag foo_hello if it is present. The second example would remove a sad, unwanted tag as well.

`target`

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This is a required setting.
Value type is string
There is no default value for this setting.

Add a UUID to a field.

Example:

    filter {
      uuid {
        target => "@uuid"
      }
    }

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