write_json
The write_json processor converts an object in an event into a JSON string. You can customize the processor to choose the source and target field names.
| Option | Description | Example |
|---|---|---|
| source | Mandatory field that specifies the name of the field in the event containing the message or object to be parsed. | If source is set to "message" and the input is {"message": {"key1":"value1", "key2":{"key3":"value3"}}}, then the write_json processor outputs the event as "{\"key1\":\"value1\",\"key2\":{\"key3\":\"value3\"}}". |
| target | An optional field that specifies the name of the field in which the resulting JSON string should be stored. If target is not specified, then the source field is used. | key1 |