How to extract Mulesoft JSON Schema Validator Errors? - json

Question

When using "Validate JSON Schema" element in Mulesoft, if more than one validation error occurs, following message is put into #[exception].
org.mule.api.MessagingException: Json content is not compliant with schema
com.github.fge.jsonschema.core.report.ListProcessingReport: failure
--- BEGIN MESSAGES ---
error: string "blah" is too long (length: 4, maximum allowed: 3)
level: "error"
schema: {"loadingURI":"file:/...}
instance: {"pointer":"/blah_blah_code"}
domain: "validation"
keyword: "maxLength"
value: "blah"
found: 4
maxLength: 3
error: string "USDe" is too long (length: 4, maximum allowed: 3)
level: "error"
schema: {"loadingURI":"file:/..."}
instance: {"pointer":"/blah_code"}
domain: "validation"
keyword: "maxLength"
value: "USDe"
found: 4
maxLength: 3
--- END MESSAGES ---
Is there anyway to extract individual errors?

Answer 1

You can use when condition inside catch-exception-strategy and set payload accordingly for each element
Below example for blah element
<when expression="#[exception.causedBy(org.mule.api.MessagingException)&& exception.cause.message.contains('schema') && exception.cause.message.contains('blah')]">
<set-payload value="include element specification here" doc:name="Json schema validation error"/>
</when>