/*
* 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.sling.commons.log.logback.internal.util;
import java.io.PrintStream;
import java.util.List;
import ch.qos.logback.core.Context;
import ch.qos.logback.core.CoreConstants;
import ch.qos.logback.core.status.ErrorStatus;
import ch.qos.logback.core.status.Status;
import ch.qos.logback.core.status.StatusManager;
import ch.qos.logback.core.status.StatusUtil;
import ch.qos.logback.core.util.StatusPrinter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Custom StatusPrinter similar to Logback StatusPrinter to account for changes required
* for SLING-3410
*/
public class SlingStatusPrinter {
/**
* Based on StatusPrinter. printInCaseOfErrorsOrWarnings. This has been adapted
* to print more context i.e. some message from before the error message to better understand
* the failure scenario
*
* @param threshold time since which the message have to be checked for errors/warnings
* @param msgSince time form which we are interested in the message logs
* @param initSuccess flag indicating if Logback configuration failed or not
*/
public static void printInCaseOfErrorsOrWarnings(Context context, long threshold,
long msgSince, boolean initSuccess) {
if (context == null) {
throw new IllegalArgumentException("Context argument cannot be null");
}
PrintStream ps = System.out;
StatusManager sm = context.getStatusManager();
if (sm == null) {
ps.println("WARN: Context named \"" + context.getName()
+ "\" has no status manager");
} else {
StatusUtil statusUtil = new StatusUtil(context);
if (statusUtil.getHighestLevel(threshold) >= ErrorStatus.WARN) {
List<Status> filteredList =
StatusUtil.filterStatusListByTimeThreshold(sm.getCopyOfStatusList(), msgSince);
print(filteredList, initSuccess);
}
}
}
private static void print(List<Status> statusList, boolean initSuccess) {
if (statusList == null) {
return;
}
StringBuilder sb = new StringBuilder();
if (initSuccess) {
sb.append("While (re)configuring Logback transient issues were observed. " +
"More details are provided below.");
sb.append(CoreConstants.LINE_SEPARATOR);
}
String prefix = "";
if(initSuccess){
prefix = "*Logback Status* ";
}
for (Status s : statusList) {
StatusPrinter.buildStr(sb, prefix, s);
}
//In case logging system completely fails then log the message in System out
//otherwise make it part of 'normal' logs
if (!initSuccess) {
System.out.println(sb.toString());
} else {
Logger logger = LoggerFactory.getLogger(SlingStatusPrinter.class);
logger.info(sb.toString());
}
}
}