Whitelisted error messages still appear in Validation Report

[Former user]

Hi Team,

I have ignored a particular validation using whitelisting as follows:

@Bean
public OpenApiInteractionValidator openApiResponseInteractionValidator() {
    io.swagger.util.Json.mapper().registerModule(new JavaTimeModule());

    return OpenApiInteractionValidator
            .createFor(specLocation)
            .withLevelResolver(
                    // The key here is to use the level resolver to ignore the request validation messages
                    // Without this they would be emitted at ERROR level and cause a validation failure.
                    LevelResolver.create()
                            .withLevel("validation.request", IGNORE)
                            .build()
            )
           ** .withWhitelist(ValidationErrorsWhitelist.create()
                    .withRule(
                            "Ignore null values for string primitive type",
                            messageContainsRegexp(
                                    ".* Instance type \\(null\\) does not match any allowed primitive type \\(allowed\\: \\[\"string\"\\]\\)")
                    )**
            )
            .build();
}

However the error messages still appears in the response as follows:

{
    "key": "validation.response.body.schema.type",
    "level": "IGNORE",
    "message": "[Path '/xx/xxx'] Instance type (null) does not match any allowed primitive type (allowed: [\"string\"])",
    "additionalInfo": [],
    "nestedMessages": [],
    "context": {
        "requestPath": "/xx/xxx",
        "parameter": null,
        "apiRequestContentType": null,
        "responseStatus": null,
        "location": null,
        "pointers": null,
        "requestMethod": "POST",
        "appliedWhitelistRule": {
            "name": "Ignore null values for string primitive type"
        }
    }
}

I want to hide it from the validation report

[James Navin]

This is by design. The philosophy is to include as much information in the validation report as possible, with messages assigned a level that can be used to determine the severity.

In this case the whitelist rule is marking the message as level: IGNORE.

You can create a new validation report with filtered messages using something like:

ValidationReport.from(report.getMessages().stream().filter(m -> m.getLevel() != IGNORE).collect(Collectors.toList()));

If you wanted to expand the ValidationReport interface to support returning a filtered list of message (basically syntactic sugar for ^^) I would happily review a PR.