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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.common.xcontent.json;
import com.fasterxml.jackson.core.JsonEncoding;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.io.FastStringReader;
import org.elasticsearch.common.xcontent.XContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentGenerator;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentType;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.util.Set;
/**
* A JSON based content implementation using Jackson.
*/
public class JsonXContent implements XContent {
public static XContentBuilder contentBuilder() throws IOException {
return XContentBuilder.builder(jsonXContent);
}
private static final JsonFactory jsonFactory;
public static final String JSON_ALLOW_UNQUOTED_FIELD_NAMES = "elasticsearch.json.allow_unquoted_field_names";
public static final JsonXContent jsonXContent;
public static final boolean unquotedFieldNamesSet;
static {
jsonFactory = new JsonFactory();
// TODO: Remove the system property configuration for this in Elasticsearch 6.0.0
String jsonUnquoteProp = System.getProperty(JSON_ALLOW_UNQUOTED_FIELD_NAMES);
if (jsonUnquoteProp == null) {
unquotedFieldNamesSet = false;
jsonFactory.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, false);
} else {
unquotedFieldNamesSet = true;
switch (jsonUnquoteProp) {
case "true":
jsonFactory.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
break;
case "false":
jsonFactory.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, false);
break;
default:
throw new IllegalArgumentException("invalid value for [" + JSON_ALLOW_UNQUOTED_FIELD_NAMES + "]: " + jsonUnquoteProp);
}
}
jsonFactory.configure(JsonGenerator.Feature.QUOTE_FIELD_NAMES, true);
jsonFactory.configure(JsonParser.Feature.ALLOW_COMMENTS, true);
jsonFactory.configure(JsonFactory.Feature.FAIL_ON_SYMBOL_HASH_OVERFLOW, false); // this trips on many mappings now...
// Do not automatically close unclosed objects/arrays in com.fasterxml.jackson.core.json.UTF8JsonGenerator#close() method
jsonFactory.configure(JsonGenerator.Feature.AUTO_CLOSE_JSON_CONTENT, false);
jsonXContent = new JsonXContent();
}
private JsonXContent() {
}
@Override
public XContentType type() {
return XContentType.JSON;
}
@Override
public byte streamSeparator() {
return '\n';
}
@Override
public XContentGenerator createGenerator(OutputStream os, Set includes, Set excludes) throws IOException {
return new JsonXContentGenerator(jsonFactory.createGenerator(os, JsonEncoding.UTF8), os, includes, excludes);
}
@Override
public XContentParser createParser(String content) throws IOException {
return new JsonXContentParser(jsonFactory.createParser(new FastStringReader(content)));
}
@Override
public XContentParser createParser(InputStream is) throws IOException {
return new JsonXContentParser(jsonFactory.createParser(is));
}
@Override
public XContentParser createParser(byte[] data) throws IOException {
return new JsonXContentParser(jsonFactory.createParser(data));
}
@Override
public XContentParser createParser(byte[] data, int offset, int length) throws IOException {
return new JsonXContentParser(jsonFactory.createParser(data, offset, length));
}
@Override
public XContentParser createParser(BytesReference bytes) throws IOException {
return createParser(bytes.streamInput());
}
@Override
public XContentParser createParser(Reader reader) throws IOException {
return new JsonXContentParser(jsonFactory.createParser(reader));
}
}