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/*-
* ============LICENSE_START=======================================================
* VID
* ================================================================================
* Copyright (C) 2017 - 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.onap.vid.controller;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.core.Appender;
import ch.qos.logback.core.FileAppender;
import ch.qos.logback.core.spi.AppenderAttachable;
import com.att.eelf.configuration.Configuration;
import java.util.stream.Stream;
import javax.ws.rs.InternalServerErrorException;
import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate;
import org.onap.vid.utils.Streams;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
@Component
public final class LogfilePathCreator {
private static final EELFLoggerDelegate LOGGER = EELFLoggerDelegate.getLogger(LogfilePathCreator.class);
String getLogfilePath(String loggerName) {
/*
Find the requested logger, and pull all of it's appenders.
Find the first of the appenders that is a FileAppender, and return it's
write-out filename.
*/
LOGGER.debug("Searching for logfile path with loggerName: ", loggerName);
LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();;
return context.getLoggerList().stream()
.filter(logger -> logger.getName().equals(Configuration.GENERAL_LOGGER_NAME + "." + loggerName))
.flatMap(this::pullSubAppenders)
.flatMap(appender -> {
// Appender might be "attachable", if so - roll-up its sub-appenders
return (appender instanceof AppenderAttachable) ?
pullSubAppenders((AppenderAttachable<?>) appender) : Stream.of(appender);
})
.filter(appender -> appender instanceof FileAppender)
.map(appender -> (FileAppender<?>) appender)
.map(FileAppender::getFile)
.findFirst()
.orElseThrow(() -> new InternalServerErrorException("logfile for " + loggerName + " not found"));
}
private <T> Stream<Appender<T>> pullSubAppenders(AppenderAttachable<T> logger) {
return Streams.fromIterator(logger.iteratorForAppenders());
}
}
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