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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.ingest;
import java.util.Collections;
import java.util.Map;
import org.apache.logging.log4j.util.Supplier;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.script.ExecutableScript;
import org.elasticsearch.script.Script;
import org.elasticsearch.script.ScriptContext;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.script.ScriptType;
import org.elasticsearch.template.CompiledTemplate;
public class InternalTemplateService implements TemplateService {
private final ScriptService scriptService;
InternalTemplateService(ScriptService scriptService) {
this.scriptService = scriptService;
}
@Override
public Template compile(String template) {
int mustacheStart = template.indexOf("{{");
int mustacheEnd = template.indexOf("}}");
if (mustacheStart != -1 && mustacheEnd != -1 && mustacheStart < mustacheEnd) {
Script script = new Script(ScriptType.INLINE, "mustache", template, Collections.emptyMap());
CompiledTemplate compiledTemplate = scriptService.compileTemplate(script, ExecutableScript.INGEST_CONTEXT);
return new Template() {
@Override
public String execute(Map<String, Object> model) {
return compiledTemplate.run(model);
}
@Override
public String getKey() {
return template;
}
};
} else {
return new StringTemplate(template);
}
}
class StringTemplate implements Template {
private final String value;
StringTemplate(String value) {
this.value = value;
}
@Override
public String execute(Map<String, Object> model) {
return value;
}
@Override
public String getKey() {
return value;
}
}
}
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