What custom appender are you using? We might already have an equivalent one in v2, or there may be a more appropriate extension point to start from to port your plugin to v2.
On Mon, Feb 24, 2020 at 01:40 Tunuguntla Anusha <tunuguntla.anu...@tcs.com.invalid> wrote: > Hi Team, > > Currently our application is using Apache - Log4j 1.2.16 version . > To mitigate the PISRT alert (CVE-2019-17571), our application has to > migrate Log4j from 1.2.16 version to 2.12.1 version. As a part of this > migration activity we got stuck with few doubts and we need > clarifications for the same . Please find below the list of queries. > > > Queries List : > > 1) Query related to AbstractAppender constructor : > Previously our application used log4j 1.2.16 version and in which > we are able to extend the class WriterAppender to create a custom > appender. But in new log4j 2.12.1 version, the same class has made final > and so we are not able to extend the class in our application. Hence we > tried to extend the class AbstractAppender. Below is the clarification > required in order to use constructor of that class. > • From our application, while calling the super class > constructor (i.e. AbstractAppender) Can the parameters “filter” and > “properties” be passed as null?? > • We use the setLayout method in the super class > WriterAppender but the AbstractAppender class does not have this method. > Is there any equivalent method for this functionality?? > • We use the setWriter(Writer writer) method in the super > class WriterAppender but the AbstractAppender class does not have this > method. Is there any equivalent method for this functionality?? > • We use the closeWriter() method in the super class > WriterAppender but the AbstractAppender class does not have this method. > Is there any equivalent method for this functionality?? > > > 2) Query related to configure() method in PropertyConfigurator class: > In new log4j 2.12.1 core jar, PropertyConfigurator class got > removed and our application is using configure () method of that class. > So can we use the LoggerContext class as per the suggestion > mentioned in the link ( > https://logging.apache.org/log4j/2.0/faq.html#reconfig_from_code ) ?? > If so how to use the original method configure (String > configFilename)?? > > > > 3) Query related to configureAndWatch () method in > PropertyConfigurator class: > In new log4j 2.12.1 core jar, PropertyConfigurator class got > removed and our application is using configureAndWatch () method of that > class. What could be the alternative method to be used in new log4j > 2.12.1 jar?? > > > > 4) Query related to converting log4j.properties file syntax to > log4j2.properties file syntax: > Is there any reference document for migration of properties files? > > > > 5) org.apache.log4j. ConsoleAppender.activateOptions() in log4j > 1.2.17 > In new log4j 2.12.1 version, activateOptions() method got removed > from ConsoleAppender and also in its parent class AppenderSkeleton an > empty method is present. What is the equivalent method to be used? > > > > 6) org.apache.logging.log4j.core.appender.FileAppender.setFile(String > file) in log4j 1.2.17 > In new log4j 2.12.1 version, setFile(String file) method got > removed from FileAppender and also not found in its parent class > AbstractAppender. What is the equivalent method to be used? > > > > 7) org.apache.logging.log4j.core.appender.FileAppender.activateOptions() > in log4j 1.2.17 > In new log4j 2.12.1 version, activateOptions() method got removed > from FileAppender and also not found in its parent class AbstractAppender. > What is the equivalent method to be used? > > > > 8) > org.apache.logging.log4j.core.appender.FileAppender.setAppend(boolean > flag) in log4j 1.2.17 > In new log4j 2.12.1 version, setAppend(boolean flag) method got > removed from FileAppender and also not found in its parent class > AbstractAppender. What is the equivalent method to be used? > > > > 9) org.apache.log4j.Category.getLoggerRepository() in log4j 1.2.17 > In new log4j org.apache.log4j.Category is present in > log4j-1.2-api-2.12.1.jar, but getLoggerRepository() is not found. What is > the equivalent method to be used? > > > > 10) org.apache.log4j.or.ObjectRenderer in log4j 1.2.17 > ObjectRenderer interface is not found in latest log4j. What is the > equivalent interface/class to be used? > > > > Note : For the above posted queries , we were not able to find the answers > / clarifications from release notes , migration document or from any other > source . So we are requesting you to provide the support for the queries > posted . > > > Please let us know if any of the queries mentioned are not clear. > > > > Thanks > Anusha > =====-----=====-----===== > Notice: The information contained in this e-mail > message and/or attachments to it may contain > confidential or privileged information. If you are > not the intended recipient, any dissemination, use, > review, distribution, printing or copying of the > information contained in this e-mail message > and/or attachments to it are strictly prohibited. If > you have received this communication in error, > please notify us by reply e-mail or telephone and > immediately and permanently delete the message > and any attachments. Thank you > > > -- Matt Sicker <boa...@gmail.com>
