/*
* 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.action.support;
import org.elasticsearch.common.compress.lzf.LZF;
import org.elasticsearch.common.io.stream.BytesStreamInput;
import org.elasticsearch.common.io.stream.CachedStreamInput;
import org.elasticsearch.common.io.stream.CachedStreamOutput;
import org.elasticsearch.common.io.stream.LZFStreamInput;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.rest.RestRequest;
import java.io.IOException;
/**
* @author kimchy (shay.banon)
*/
public class RestXContentBuilder {
public static XContentBuilder restContentBuilder(RestRequest request) throws IOException {
XContentType contentType = XContentType.fromRestContentType(request.header("Content-Type"));
if (contentType == null) {
// try and guess it from the body, if exists
if (request.hasContent()) {
contentType = XContentFactory.xContentType(request.contentByteArray(), request.contentByteArrayOffset(), request.contentLength());
}
}
if (contentType == null) {
// default to JSON
contentType = XContentType.JSON;
}
CachedStreamOutput.Entry cachedEntry = CachedStreamOutput.popEntry();
XContentBuilder builder = new XContentBuilder(XContentFactory.xContent(contentType), cachedEntry.cachedBytes(), cachedEntry);
if (request.paramAsBoolean("pretty", false)) {
builder.prettyPrint();
}
String casing = request.param("case");
if (casing != null && "camelCase".equals(casing)) {
builder.fieldCaseConversion(XContentBuilder.FieldCaseConversion.CAMELCASE);
} else {
// we expect all REST interfaces to write results in underscore casing, so
// no need for double casing
builder.fieldCaseConversion(XContentBuilder.FieldCaseConversion.NONE);
}
return builder;
}
public static void restDocumentSource(byte[] source, XContentBuilder builder, ToXContent.Params params) throws IOException {
restDocumentSource(source, 0, source.length, builder, params);
}
public static void restDocumentSource(byte[] source, int offset, int length, XContentBuilder builder, ToXContent.Params params) throws IOException {
if (LZF.isCompressed(source, offset, length)) {
BytesStreamInput siBytes = new BytesStreamInput(source, offset, length);
LZFStreamInput siLzf = CachedStreamInput.cachedLzf(siBytes);
XContentType contentType = XContentFactory.xContentType(siLzf);
siLzf.resetToBufferStart();
if (contentType == builder.contentType()) {
builder.rawField("_source", siLzf);
} else {
XContentParser parser = XContentFactory.xContent(contentType).createParser(siLzf);
try {
parser.nextToken();
builder.field("_source");
builder.copyCurrentStructure(parser);
} finally {
parser.close();
}
}
} else {
XContentType contentType = XContentFactory.xContentType(source, offset, length);
if (contentType == builder.contentType()) {
builder.rawField("_source", source, offset, length);
} else {
XContentParser parser = XContentFactory.xContent(contentType).createParser(source);
try {
parser.nextToken();
builder.field("_source");
builder.copyCurrentStructure(parser);
} finally {
parser.close();
}
}
}
}
}