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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2012-2013 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
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* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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package org.glassfish.admin.rest.adapter;
import java.io.IOException;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.Provider;
import org.glassfish.admin.rest.Constants;
import org.glassfish.admin.rest.composite.CompositeResource;
import org.glassfish.admin.rest.model.ResponseBody;
import org.glassfish.admin.rest.utils.Util;
/**
* This filter reformats string entities from non-success responses
* into arrays of message entities (when not using the REST legacy mode).
*
* @author tmoreau
*/
@Provider
public class ExceptionFilter implements ContainerResponseFilter {
public ExceptionFilter() {
}
@Override
public void filter(ContainerRequestContext reqCtx, ContainerResponseContext resCtx) throws IOException {
if (!Constants.MEDIA_TYPE_JSON.equals(reqCtx.getHeaderString("Accept"))) {
// Don't wrap if using legacy mode
return;
}
int status = resCtx.getStatus();
if ((status >= 200) && (status <= 299)) {
// don't wrap success messages
return;
}
Object entity = resCtx.getEntity();
if (!(entity instanceof String)) {
// don't wrap null and non-String entities
return;
}
// Normally the cliend sends in an X-Skip-Resource-Links header
// to say that resource links should not be returned, and the resource
// looks for that header in the request and, if present, tells
// the ResponseBody constructor to ignore resource links.
// Since we never return links from this filter, instead of looking
// for the header, we can just always tell the ResponseBody to ignore links.
ResponseBody rb = new ResponseBody(false);
String errorMsg = (String)entity;
rb.addFailure(errorMsg);
resCtx.setEntity(rb, resCtx.getEntityAnnotations(), Constants.MEDIA_TYPE_JSON_TYPE);
}
}