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Elastic Docs ›Functionbeat Reference [8.x] ›Configure Functionbeat ›Filter and enhance data with processors

Generate a fingerprint of an event

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Generate a fingerprint of an event

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The fingerprint processor generates a fingerprint of an event based on a specified subset of its fields.

The value that is hashed is constructed as a concatenation of the field name and field value separated by |. For example |field1|value1|field2|value2|.

Nested fields are supported in the following format: "field1.field2" e.g: ["log.path.file", "foo"]

processors:
  - fingerprint:
      fields: ["field1", "field2", ...]

The following settings are supported:

fields
List of fields to use as the source for the fingerprint. The list will be alphabetically sorted by the processor.
ignore_missing
(Optional) Whether to ignore missing fields. Default is false.
target_field
(Optional) Field in which the generated fingerprint should be stored. Default is fingerprint.
method
(Optional) Algorithm to use for computing the fingerprint. Must be one of: md5, sha1, sha256, sha384, sha512, xxhash. Default is sha256.
encoding
(Optional) Encoding to use on the fingerprint value. Must be one of hex, base32, or base64. Default is hex.
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