net.devh.boot.grpc.server.advice

Class GrpcAdviceExceptionHandler

java.lang.Object

net.devh.boot.grpc.server.advice.GrpcAdviceExceptionHandler

public class GrpcAdviceExceptionHandler
extends Object

As part of @GrpcAdvice, when a thrown exception is caught during gRPC calls (via global interceptor GrpcAdviceExceptionInterceptor, then this thrown exception is being handled. By GrpcExceptionHandlerMethodResolver is a mapping between exception and the in case to be executed method provided.
Returned object is declared in @GrpcAdvice classes with annotated methods @GrpcExceptionHandler.

See Also:

GrpcExceptionHandlerMethodResolver, GrpcAdviceExceptionInterceptor

Constructor Summary

Constructors

Constructor and Description
GrpcAdviceExceptionHandler(GrpcExceptionHandlerMethodResolver grpcExceptionHandlerMethodResolver)

Method Summary

Modifier and Type	Method and Description
<E extends Throwable> Object	handleThrownException(E exception) Given an exception, a lookup is performed to retrieve mapped method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GrpcAdviceExceptionHandler

public GrpcAdviceExceptionHandler(GrpcExceptionHandlerMethodResolver grpcExceptionHandlerMethodResolver)

Method Detail

handleThrownException

@Nullable
public <E extends Throwable> Object handleThrownException(E exception)
                                                             throws Throwable

Given an exception, a lookup is performed to retrieve mapped method.
In case of successful returned method, and matching exception parameter type for given exception, the exception is handed over to retrieved method. Retrieved method is then being invoked.

Type Parameters:

E - type of exception

Parameters:

exception - exception to search for

Returns:

result of invoked mapped method to given exception

Throws:

Throwable - rethrows exception if no mapping existent or exceptions raised by implementation