It is about string concatenation performance. It’s potentially significant if your have dense logging statements. (Prior to SLF4J 1.7) But only two parameters are possible Because the vast majority of logging statements have 2 or fewer parameters, so SLF4J API up to version 1.6 covers (only) the majority of use cases. The API designers have … Read more
You need to call SLF4JBridgeHandler.install(). You also need to enable all log levels at the root logger (reason in excerpt below) in java.util.logging and remove the default console appender. This handler will redirect jul logging to SLF4J. However, only logs enabled in j.u.l. will be redirected. For example, if a log statement invoking a j.u.l. … Read more
I will try to reply to your question in a broad way. A simple way to do Connector development could be as follows: Structure and build your connector source code by looking at one of the many Kafka Connectors available publicly (you’ll find an extensive list available here: https://www.confluent.io/product/connectors/ ) Download the latest Confluent Open … Read more
Add the following to your logback.xml configuration file: <logger name=”org.hibernate.engine.jdbc.spi.SqlExceptionHelper” level=”OFF”/> The instruction: level=”OFF” tells Logback to disable all log output for a given logger.
EDIT 2020-09-21: Since 3.4.0, Mockito supports mocking static methods, API is still incubating and is likely to change, in particular around stubbing and verification. It requires the mockito-inline artifact. And you don’t need to prepare the test or use any specific runner. All you need to do is : @Test public void name() { try … Read more
You are mixing the 1.5.6 version of the jcl bridge with the 1.6.0 version of the slf4j-api; this won’t work because of a few changes in 1.6.0. Use the same versions for both, i.e. 1.6.1 (the latest). I use the jcl-over-slf4j bridge all the time and it works fine.
module-info.class is a Java9 (JPMS) feature. Jetty 9.4.9 (or newer) supports the new JAR file changes from Java 9. It does not matter what Runtime JVM you are using (Oracle Java 8, or even something like OpenJDK 11.0.3), if you are using those JEP-238 Multi-Release Jar files in your WebApp (or Server classloader) then you … Read more
In addition to having Lombok plugin installed, also make sure that the “Enable annotation processing” checkbox is ticked under: Preferences > Compiler > Annotation Processors Note: starting with IntelliJ 2017, the “Enable Annotation Processing” checkbox has moved to: Settings > Build, Execution, Deployment > Compiler > Annotation Processors
It’s very possible to do something like this in logback. Here’s an example configuration: <?xml version=”1.0″?> <configuration> <appender name=”FILE” class=”ch.qos.logback.core.FileAppender”> <file>logfile.log</file> <append>true</append> <encoder> <pattern>%-4relative [%thread] %-5level %logger{35} – %msg %n</pattern> </encoder> </appender> <appender name=”ANALYTICS-FILE” class=”ch.qos.logback.core.FileAppender”> <file>analytics.log</file> <append>true</append> <encoder> <pattern>%-4relative [%thread] %-5level %logger{35} – %msg %n</pattern> </encoder> </appender> <!– additivity=false ensures analytics data only goes to … Read more
Disclaimer: I am the founder of log4j, SLF4J and logback projects. There are objective reasons for preferring SLF4J. For one, SLF4J allows the end-user the liberty to choose the underlying logging framework. In addition, savvier users tend to prefer logback which offers capabilities beyond log4j, with j.u.l falling way behind. Feature-wise j.u.l may be sufficient … Read more