/**
* 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.camel.spi;
import org.apache.camel.Exchange;
import org.apache.camel.LoggingLevel;
import org.apache.camel.processor.CamelLogProcessor;
import org.apache.camel.processor.LogProcessor;
import org.apache.camel.util.CamelLogger;
import org.slf4j.Marker;
/**
* An event listener SPI for logging. Listeners are registered into {@link LogProcessor} and
* {@link CamelLogProcessor} so that the logging events are delivered for both of Log Component and Log EIP.
*
*/
public interface LogListener {
/**
* Invoked right before Log component or Log EIP logs.
* Note that {@link CamelLogger} holds the {@link LoggingLevel} and {@link Marker}.
* The listener can check {@link CamelLogger#getLevel()} to see in which log level
* this is going to be logged.
*
* @param exchange camel exchange
* @param camelLogger {@link CamelLogger}
* @param message log message
* @return log message, possibly enriched by the listener
*/
String onLog(Exchange exchange, CamelLogger camelLogger, String message);
}