/**
* Adds a random non existing field to the provided document and associates it with the provided
* value. The field will be added at a random position within the document, not necessarily at the
* top level using a leaf field name.
*/
public static String addRandomField(Random random, IngestDocument ingestDocument, Object value) {
String fieldName;
do {
fieldName = randomFieldName(random);
} while (canAddField(fieldName, ingestDocument) == false);
ingestDocument.setFieldValue(fieldName, value);
return fieldName;
}
@Override
public void execute(IngestDocument ingestDocument) throws Exception {
String fieldValue = ingestDocument.getFieldValue(matchField, String.class);
Map<String, Object> matches = grok.captures(fieldValue);
if (matches != null) {
matches.forEach((k, v) -> ingestDocument.setFieldValue(k, v));
} else {
throw new IllegalArgumentException(
"Grok expression does not match field value: [" + fieldValue + "]");
}
}