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Log4j pattern experiments
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‎benchmark/key-value-db-benchmark/README.md‎

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‎corejava-exp/corejava-io-exp/src/test/java/cz/znj/kvr/sw/exp/java/corejava/io/bytes/InputStreamSizeTest.java‎

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‎log-exp/log4j2-exp/log4j2-pattern-exp/README.md‎

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# Log4j2 pattern experiments
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```shell
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# standard pattern with exception:
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java -Dlog4j2.configurationFile=std-log4j2.xml -jar target/log4j2-pattern-exp-slf4j
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# pattern with exception message only:
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java -Dlog4j2.configurationFile=noex-log4j2.xml -jar target/log4j2-pattern-exp-slf4j
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```

‎log-exp/log4j2-exp/log4j2-pattern-exp/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>cz.znj.kvr.sw.exp.java.logexp.log4j2</groupId>
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<artifactId>log4j2-pattern-exp</artifactId>
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<version>0.0.1</version>
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<packaging>jar</packaging>
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<parent>
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<groupId>cz.znj.kvr.sw.exp.java.logexp.log4j2</groupId>
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<artifactId>log4j2-exp-base</artifactId>
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<version>0.0.1</version>
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<relativePath>../pom.xml</relativePath>
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</parent>
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<build>
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<plugins>
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<!-- the order matters - maven-shade-plugin somehow consumes the jar created by assembly-plugin -->
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<executions>
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<execution>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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<configuration>
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<finalName>${project.artifactId}-slf4j</finalName>
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<createDependencyReducedPom>false</createDependencyReducedPom>
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<filters>
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<filter>
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<artifact>*:${project.artifactId}-onejar</artifact>
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<excludes>
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<exclude>*</exclude>
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<exclude>**/*</exclude>
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</excludes>
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</filter>
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</filters>
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<transformers>
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<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
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<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
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<mainClass>com.github.kvr000.exp.java.logexp.log4j2.pattern.Slf4jMain</mainClass>
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</transformer>
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</transformers>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>net.dryuf.maven.plugin</groupId>
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<artifactId>dryuf-executable-jar-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>exec-shade</id>
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<phase>package</phase>
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<goals>
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<goal>create-executable</goal>
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</goals>
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<configuration>
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<vmParams>-Xmx256m</vmParams>
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<sort>true</sort>
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<resourceConfigs>
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<resourceConfig>
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<pattern>glob:*.jar</pattern>
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<minimalCompress>10</minimalCompress>
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</resourceConfig>
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</resourceConfigs>
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<input>${project.build.directory}/${project.artifactId}-slf4j.${project.packaging}</input>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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<dependencies>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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</dependency>
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<dependency>
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<groupId>org.testng</groupId>
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<artifactId>testng</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-api</artifactId>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-core</artifactId>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-api</artifactId>
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</dependency>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-slf4j2-impl</artifactId>
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</dependency>
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</dependencies>
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</project>

‎log-exp/log4j2-exp/log4j2-pattern-exp/src/main/java/com/github/kvr000/exp/java/logexp/log4j2/pattern/LogMain.java‎

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package com.github.kvr000.exp.java.logexp.log4j2.pattern;
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import lombok.extern.log4j.Log4j2;
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@Log4j2
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public class LogMain
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{
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public static void main(String[] args)
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{
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log.error("Hello World");
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try {
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Long.parseLong("hello");
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}
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catch (NumberFormatException ex) {
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log.error("Parse failed: ", ex);
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}
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}
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}

‎log-exp/log4j2-exp/log4j2-pattern-exp/src/main/java/com/github/kvr000/exp/java/logexp/log4j2/pattern/Slf4jMain.java‎

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package com.github.kvr000.exp.java.logexp.log4j2.pattern;
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import lombok.extern.slf4j.Slf4j;
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@Slf4j
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public class Slf4jMain
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{
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public static void main(String[] args)
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{
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log.error("Hello World");
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try {
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Long.parseLong("hello");
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}
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catch (NumberFormatException ex) {
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log.error("Parse failed: ", ex);
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}
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}
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}

‎log-exp/log4j2-exp/log4j2-pattern-exp/src/main/resources/exmsg-log4j2.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<Configuration status="INFO" monitorInterval="30">
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<Properties>
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<Property name="LOG_PATTERN">%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1} - %m%throwable{1}%n</Property>
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</Properties>
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<Appenders>
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<Console name="console" target="SYSTEM_OUT" follow="true">
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<PatternLayout pattern="${LOG_PATTERN}"/>
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</Console>
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</Appenders>
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<Loggers>
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<Root level="Trace">
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<AppenderRef ref="console"/>
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</Root>
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</Loggers>
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</Configuration>

‎log-exp/log4j2-exp/log4j2-pattern-exp/src/main/resources/std-log4j2.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<configuration status="WARN">
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<appenders>
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<console name="Console" target="SYSTEM_OUT">
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<patternLayout pattern="%d{yyyy-MM-dd'T'HH:mm:ss.SSS}{UTC}Z [%-16t] %-5level [%logger{36}] - %msg%n"/>
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</console>
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</appenders>
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<loggers>
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<logger name="com.github.kvr000.exp.java.opencv.basic" level="INFO" />
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<root level="INFO">
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<appenderRef ref="Console" />
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</root>
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</loggers>
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</configuration>

‎log-exp/log4j2-exp/pom.xml‎

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<modules>
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<module>log4j2-logging-exp</module>
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<module>log4j2-pattern-exp</module>
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</modules>
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<dependencyManagement>

‎log-exp/slf4j-exp/slf4j-cmdline-exp/README.md‎

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