WebApplicationExceptionMapper.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package org.openspcoop2.utils.service.fault.jaxrs;

import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;
import javax.ws.rs.ext.ExceptionMapper;

import org.openspcoop2.utils.transport.http.HttpConstants;
import org.openspcoop2.utils.transport.http.HttpUtilities;
import org.slf4j.Logger;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;

/** 
 * WebApplicationExceptionMapper
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class WebApplicationExceptionMapper implements ExceptionMapper<javax.ws.rs.WebApplicationException> {

    private Logger log = org.openspcoop2.utils.LoggerWrapperFactory.getLogger(WebApplicationExceptionMapper.class);
    
    private boolean excludeFaultBean;
    private boolean updateTitle = true;
    private ITypeGenerator typeGenerator;
    
    public boolean isExcludeFaultBean() {
        return this.excludeFaultBean;
    }
    public void setExcludeFaultBean(boolean excludeFaultBean) {
        this.excludeFaultBean = excludeFaultBean;
    }
    
    public boolean isUpdateTitle() {
        return this.updateTitle;
    }
    public void setUpdateTitle(boolean updateTitle) {
        this.updateTitle = updateTitle;
    }
    
    public ITypeGenerator getTypeGenerator() {
        return this.typeGenerator;
    }
    public void setTypeGenerator(ITypeGenerator typeGenerator) {
        this.typeGenerator = typeGenerator;
    }
    
    @Override
    public Response toResponse(javax.ws.rs.WebApplicationException e) {
        if(e.getResponse()==null || e.getResponse().getEntity()==null || !(e.getResponse().getEntity() instanceof ProblemRFC7807)) {
            
            this.log.error(e.getMessage(),e);
            
            ProblemRFC7807 problem = null;
            
            if(e.getCause() instanceof JsonMappingException) {
                JsonMappingException jsonMappingException = (JsonMappingException) e.getCause();
                problem = new ProblemValidation(FaultCode.RICHIESTA_NON_VALIDA.toFault());
                ((ProblemValidation) problem).addInvalidParam(jsonMappingException.getPathReference(), jsonMappingException.getMessage(), null);
            } 
            else if(e.getCause() instanceof JsonParseException) {
                JsonParseException jsonParseException = (JsonParseException) e.getCause();
                problem = new ProblemValidation(FaultCode.RICHIESTA_NON_VALIDA.toFault());
                if(jsonParseException.getOriginalMessage()!=null) {
                    ((ProblemValidation) problem).addInvalidParam("body", jsonParseException.getOriginalMessage(), null);
                }
                else {
                    ((ProblemValidation) problem).addInvalidParam("body", jsonParseException.getMessage(), null);
                }
                if(jsonParseException.getLocation()!=null) {
                    StringBuilder bf = new StringBuilder();
                    bf.append("line: ").append(jsonParseException.getLocation().getLineNr()).append(", column: ").append(jsonParseException.getLocation().getColumnNr());
                    ((ProblemValidation) problem).addInvalidParam("position", bf.toString(), null);
                }
            }
            else {
                problem = FaultCode.RICHIESTA_NON_VALIDA.toFault();
            }
            
            this.updateProblem(problem, e); // customizzabile
            this._setType(problem, e);
            if(this.updateTitle) {
                // aggiorno rispetto al code modificabile nel metodo sopra
                problem.setTitle(HttpUtilities.getHttpReason(problem.getStatus()));
            }
            return Response.status(problem.getStatus()).entity(problem).type(HttpConstants.CONTENT_TYPE_JSON_PROBLEM_DETAILS_RFC_7807).build();

        }
        else {
            if(this.excludeFaultBean) {
                ResponseBuilder responseBuilder = Response.status(e.getResponse().getStatus());
                if(e.getResponse().getHeaders()!=null) {
                    MultivaluedMap<String, Object> map = e.getResponse().getHeaders();
                    if(!map.isEmpty()) {
                        map.keySet().stream().forEach(k -> {
                            responseBuilder.header(k, map.get(k));
                        });
                    }
                }
                return responseBuilder.build();
            } else {
                
                ProblemRFC7807 problem = this._getProblem(e);
                if(problem!=null) {
                    this.updateProblem(problem, e); // customizzabile
                    this._setType(problem, e);
                    if(this.updateTitle) {
                        // aggiorno rispetto al code modificabile nel metodo sopra
                        problem.setTitle(HttpUtilities.getHttpReason(problem.getStatus()));
                    }
                }
                
                return e.getResponse();
            }
        }
    }
    
    private ProblemRFC7807 _getProblem(javax.ws.rs.WebApplicationException e) {
        if(e==null || e.getResponse()==null || e.getResponse().getEntity()==null) {
            return null;
        }
        if(!(e.getResponse().getEntity() instanceof ProblemRFC7807)) {
            return null;
        }
        ProblemRFC7807 problem = (ProblemRFC7807) e.getResponse().getEntity();
        return problem;
    }
    private void _setType(ProblemRFC7807 problem, javax.ws.rs.WebApplicationException e) {
        if(this.typeGenerator==null) {
            return;
        }
        problem.setType(this.typeGenerator.getType(problem.getStatus(), e));
    }
    
    
    public void updateProblem(ProblemRFC7807 problem, javax.ws.rs.WebApplicationException e) {
        
    }

}