/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.solr.handler.dataimport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.invoke.MethodHandles;
import java.util.Map;
/**
* A {@link Transformer} implementation which logs messages in a given template format.
* <p>
* Refer to <a href="http://wiki.apache.org/solr/DataImportHandler">http://wiki.apache.org/solr/DataImportHandler</a>
* for more details.
* <p>
* <b>This API is experimental and may change in the future.</b>
*
* @since solr 1.4
*/
public class LogTransformer extends Transformer {
private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
@Override
public Object transformRow(Map<String, Object> row, Context ctx) {
String expr = ctx.getEntityAttribute(LOG_TEMPLATE);
String level = ctx.replaceTokens(ctx.getEntityAttribute(LOG_LEVEL));
if (expr == null || level == null) return row;
if ("info".equals(level)) {
if (LOG.isInfoEnabled())
LOG.info(ctx.replaceTokens(expr));
} else if ("trace".equals(level)) {
if (LOG.isTraceEnabled())
LOG.trace(ctx.replaceTokens(expr));
} else if ("warn".equals(level)) {
if (LOG.isWarnEnabled())
LOG.warn(ctx.replaceTokens(expr));
} else if ("error".equals(level)) {
if (LOG.isErrorEnabled())
LOG.error(ctx.replaceTokens(expr));
} else if ("debug".equals(level)) {
if (LOG.isDebugEnabled())
LOG.debug(ctx.replaceTokens(expr));
}
return row;
}
public static final String LOG_TEMPLATE = "logTemplate";
public static final String LOG_LEVEL = "logLevel";
}