How to direct logs to multiple log files (destinations) – log4cpp
log4cpp can not only be used to log the events to a log file or standard output, but also helps you to log events to multiple destinations. For this purpose, either you can add multiple appenders to a single category or make use of multiple Categories. We will explore the first options. With this option, [...]
Three Important Steps for Log4cpp Programming
When you start working with log4cpp, you need to take care of the following steps Initializing an Appender Deciding on the Layout Finalize on the Category Let’s see what each of these mean. Appender: Appender in log4cpp corresponds to the destination of logs. A suitable appender is initialized based on your requirements. The destination of [...]
Log4cpp::StringQueueAppender – Manipulating the log4cpp logs
log4cpp logs can be directed to files, standard output, back up files or even to the System Log. But before moving to discussing about log4cpp::StringQueueAppender, I would like to present certain scenarios or use cases of StringQueueAppender. You do not want to actually print the log files, but simply want to count certain occurrences of [...]
OstreamAppender: Direct the log4cpp logs to standard Output
log4cpp enables you to easily log important events. The logs can be directed to files or even periodically rolled back and back up. There are multiple destinations for the log files and you can decide which one to choose from. Though in most cases, you want to use log files, you can also make use [...]
log4cpp::RollingFileAppender – How to Backup and Roll Over log files?
It is very important to log the events in your software both for analytics and debugging. Log4cpp is helpful for logging in with C++. Log4Cpp::File Appender can be used to direct the output of logs to a file. But there are certain challenges that you may face while using log files The files can soon [...]
log4cpp::FileAppender – Logging into Files
log4cpp::FileAppender is used to output the logs to a file. The following program will show how an object of log4cpp::FileAppender is used. #include <stdio.h> #include <stdlib.h> #include <log4cpp/category.hh> #include <log4cpp/FileAppender.hh> #include <log4cpp/SimpleLayout.hh> #define LOGFILE "/home/user/test.log" int main() { /*Setting up Appender, layout and Category*/ log4cpp::Appender *appender = new log4cpp::FileAppender("FileAppender",LOGFILE); log4cpp::Layout *layout = new log4cpp::SimpleLayout(); log4cpp::Category& [...]
log4cpp::Appender – Destination of Logs
As pointed out in log4cpp tutorial, one of the important things while initializing logging using log4cpp is to decide the destination of the log. It can be any file often known as log file or even across the network. An object of the class log4cpp::Appender must be initialized for this purpose as shown in the [...]