Overview

This is a Java library to validate gRPC messages using protovalidate library.

Protovalidate resources

• Protovalidate GitHub page
• Standard Constraints
• Java Protovalide Dependency

How To Use this library

Import in your project this dependency:

<dependency>
    <groupId>com.example</groupId>
    <artifactId>protovalidate-lib</artifactId>
    <version>0.0.6-SNAPSHOT</version>
</dependency>

Add to a config file the following import:

@Import({GrpcMessageValidator.class, Validator.class})

In your gRPC Server class, add the following field member:

private final GrpcMessageValidator grpcRequestValidator;

Finally, in your gRPC API entrypoint method, add the following:

grpcRequestValidator.validate(request);

It will trigger the validation declared in the proto file using the protovalidate lib syntax (see mentioned resources) and throw an ApplicationValidationException with all validation constraints broken a single message. This is a sample message received by a client:

{
  "error": "3 INVALID_ARGUMENT: surname: value length must be at least 1 characters; name: value is required"
}