/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search licenses this
* file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.rest;
import org.elasticsearch.ElasticSearchException;
import org.elasticsearch.common.xcontent.XContentBuilder;
import java.io.IOException;
import static org.elasticsearch.ExceptionsHelper.*;
import static org.elasticsearch.rest.action.support.RestXContentBuilder.*;
/**
* @author kimchy (shay.banon)
*/
public class XContentThrowableRestResponse extends XContentRestResponse {
public XContentThrowableRestResponse(RestRequest request, Throwable t) throws IOException {
this(request, ((t instanceof ElasticSearchException) ? ((ElasticSearchException) t).status() : RestStatus.INTERNAL_SERVER_ERROR), t);
}
public XContentThrowableRestResponse(RestRequest request, RestStatus status, Throwable t) throws IOException {
super(request, status, convert(request, status, t));
}
private static XContentBuilder convert(RestRequest request, RestStatus status, Throwable t) throws IOException {
XContentBuilder builder = restContentBuilder(request).startObject()
.field("error", detailedMessage(t))
.field("status", status.getStatus());
if (t != null && request.paramAsBoolean("error_trace", false)) {
builder.startObject("error_trace");
boolean first = true;
while (t != null) {
if (!first) {
builder.startObject("cause");
}
buildThrowable(t, builder);
if (!first) {
builder.endObject();
}
t = t.getCause();
first = false;
}
builder.endObject();
}
builder.endObject();
return builder;
}
private static void buildThrowable(Throwable t, XContentBuilder builder) throws IOException {
builder.field("message", t.getMessage());
for (StackTraceElement stElement : t.getStackTrace()) {
builder.startObject("at")
.field("class", stElement.getClassName())
.field("method", stElement.getMethodName());
if (stElement.getFileName() != null) {
builder.field("file", stElement.getFileName());
}
if (stElement.getLineNumber() >= 0) {
builder.field("line", stElement.getLineNumber());
}
builder.endObject();
}
}
}