org.smallmind.web.jersey.json.ThrowableExceptionMapper Maven / Gradle / Ivy
/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
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* You should have received a copy of the GNU Affero General Public License
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* If you modify this Program, or any covered work, by linking or
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package org.smallmind.web.jersey.json;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.ext.ExceptionMapper;
import org.smallmind.nutsnbolts.reflection.type.GenericUtility;
import org.smallmind.scribe.pen.LoggerManager;
import org.smallmind.web.json.scaffold.fault.Fault;
import org.smallmind.web.json.scaffold.fault.FaultWrappingException;
public class ThrowableExceptionMapper implements ExceptionMapper {
private final ExceptionMapper[] mappers;
private final boolean logUnclassifiedErrors;
public ThrowableExceptionMapper (ExceptionMapper... mappers) {
this(false, mappers);
}
public ThrowableExceptionMapper (boolean logUnclassifiedErrors, ExceptionMapper... mappers) {
this.logUnclassifiedErrors = logUnclassifiedErrors;
this.mappers = mappers;
}
@Override
public Response toResponse (Throwable throwable) {
if (mappers != null) {
for (ExceptionMapper mapper : mappers) {
Class mappedThrowableClass = (Class)GenericUtility.getTypeArgumentsOfSubclass(ConcreteExceptionMapper.class, mapper.getClass()).get(0);
if (mappedThrowableClass.isAssignableFrom(throwable.getClass())) {
Response response;
if ((response = mapper.toResponse(throwable)) != null) {
return response;
}
}
}
}
if (throwable instanceof WebApplicationException) {
if (logUnclassifiedErrors) {
Response response;
if (((response = ((WebApplicationException)throwable).getResponse()) != null) && (response.getStatus() == 500)) {
LoggerManager.getLogger(ThrowableExceptionMapper.class).error(throwable);
}
}
return ((WebApplicationException)throwable).getResponse();
}
if (logUnclassifiedErrors) {
LoggerManager.getLogger(ThrowableExceptionMapper.class).error(throwable);
}
return Response.status(500).type(MediaType.APPLICATION_JSON).entity((throwable instanceof FaultWrappingException) ? ((FaultWrappingException)throwable).getFault() : new Fault(throwable)).build();
}
}