Validate Event

This handler (com.rierino.handler.ValidationEventHandler) provides ability to check validity of event contents using different validator types.

Handler Parameters

Parameter	Definition	Example	Default
validator	Fully qualified class name for the validator to use	com.rierino.handler.util.validator.JsonSchemaValidator	-
validator.*	Additional parameters used by the validator class	state=schema	-

Following validators are available (which can be also used as validators within state managers):

JMESValidator

Validates input against a given "pattern". Pattern information can be provided as a handler or action event metadata parameter. Returns a "valid" flag in results.

JsonSchemaValidator

Validates input against a Json schema stored in a state manager. Uses the following handler parameters:

Parameter	Definition	Example	Default
validator.state	State manager with schema records.	-	schema
validator.version	Json schema version to use for validation.	-	V201909

Also uses the following action event metadata parameter:

Table

Parameter	Definition	Example	Default
schema	Id of the schema record to use for current event validation.	product	-

JSON Schema

Returns a "valid" flag as well as "validations" list of findings.

Actions

Validate

Checks validity of the event input payload using configured validator instance and returns results.

Table

Field	Definition	Example	Default
Input Element	Json path in payload to use	parameters	-
Output Element	Json path in payload to return results	result	-

JSON Schema

With event metadata parameters as:

Table

Parameter	Definition	Example	Default
Output Pattern	JMESPath expression to convert results	-	-
*	Additional parameters used by the validator class	pattern=(value='a')

JSON Schema