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Diffstat (limited to 'vid-app-common/src/main/java/org/onap/vid/controller/LogfilePathCreator.java')
-rw-r--r-- | vid-app-common/src/main/java/org/onap/vid/controller/LogfilePathCreator.java | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/vid-app-common/src/main/java/org/onap/vid/controller/LogfilePathCreator.java b/vid-app-common/src/main/java/org/onap/vid/controller/LogfilePathCreator.java new file mode 100644 index 000000000..c317994fe --- /dev/null +++ b/vid-app-common/src/main/java/org/onap/vid/controller/LogfilePathCreator.java @@ -0,0 +1,66 @@ +/*- + * ============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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