Grok TransformItems
CertifiedParse and structure items from a JSON internal storage file using Grok expressions
Grok TransformItems
Parse and structure items from a JSON internal storage file using Grok expressions
The TransformItems task is similar to the famous Logstash Grok filter from the ELK stack.
It is particularly useful for transforming unstructured data such as logs into a structured, indexable, and queryable data structure.
The TransformItems ships with all the default patterns as defined You can find them here: https://github.com/kestra-io/plugin-transform/tree/main/plugin-transform-grok/src/main/resources/patterns.
type: io.kestra.plugin.transform.grok.TransformItemsExamples
Consume, parse, and structure logs events from Kafka topic.
id: grok_transform_items
namespace: company.team
tasks:
- id: transform_items
type: io.kestra.plugin.transform.grok.TransformItems
pattern: "%{TIMESTAMP_ISO8601:logdate} %{LOGLEVEL:loglevel} %{GREEDYDATA:message}"
from: "{{ trigger.uri }}"
triggers:
- id: trigger
type: io.kestra.plugin.kafka.Trigger
topic: test_kestra
properties:
bootstrap.servers: localhost:9092
serdeProperties:
schema.registry.url: http://localhost:8085
keyDeserializer: STRING
valueDeserializer: STRING
groupId: kafkaConsumerGroupId
interval: PT30S
maxRecords: 5
Properties
from *Requiredstring
The file to be transformed
Must be a kestra:// internal storage URI.
Pebble expression referencing an Internal Storage URI e.g. {{ outputs.mytask.uri }}.
breakOnFirstMatch booleanstring
trueIf true, break on first match
The first successful match by grok will result in the task being finished. Set to false if you want the task to try all configured patterns.
keepEmptyCaptures booleanstring
falseIf true, keep empty captures
When an optional field cannot be captured, the empty field is retained in the output. Set false if you want empty optional fields to be filtered out.
namedCapturesOnly booleanstring
trueIf true, only store named captures from grok
pattern string
The Grok pattern to match
patternDefinitions object
Custom pattern definitions
A map of pattern-name and pattern pairs defining custom patterns to be used by the current tasks. Patterns matching existing names will override the pre-existing definition.
patterns array
The list of Grok patterns to match
patternsDir array
List of user-defined pattern directories
Directories must be paths relative to the working directory.
pluginDefaultsRef Non-dynamicstring
Reference (ref) of the pluginDefaults to apply to this task.
