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sazzersazzer
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Merge remote-tracking branch 'central/master'
2 parents e5cff86 + ccba3de commit 23018fa

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‎guest/logback-example/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"
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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>com.stackify</groupId>
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<artifactId>logback-example</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<dependencies>
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<dependency>
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<groupId>ch.qos.logback</groupId>
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<artifactId>logback-classic</artifactId>
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<version>1.2.3</version>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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</dependency>
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<dependency>
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<groupId>org.codehaus.janino</groupId>
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<artifactId>janino</artifactId>
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<version>3.0.7</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.5</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎guest/logback-example/src/main/java/com/stackify/logging/IgnoreLoggerFilter.java‎

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package com.stackify.logging;
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import org.slf4j.Marker;
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import ch.qos.logback.classic.Level;
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import ch.qos.logback.classic.Logger;
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import ch.qos.logback.classic.turbo.TurboFilter;
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import ch.qos.logback.core.spi.FilterReply;
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public class IgnoreLoggerFilter extends TurboFilter {
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private String loggerName;
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@Override
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public FilterReply decide(Marker marker, Logger logger, Level level, String format, Object[] params, Throwable t) {
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if (loggerName == null) {
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return FilterReply.NEUTRAL;
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} else if (loggerName.equals(logger.getName())) {
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return FilterReply.DENY;
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} else
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return FilterReply.NEUTRAL;
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}
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public void setLoggerName(String loggerName) {
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this.loggerName = loggerName;
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}
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}

‎guest/logback-example/src/main/java/com/stackify/models/Employee.java‎

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package com.stackify.models;
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public class Employee {
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private String email;
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private String name;
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private double salary;
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public Employee() {
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}
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public Employee(String email, String name, double salary) {
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this.email = email;
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this.name = name;
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this.salary = salary;
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}
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public String getEmail() {
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return email;
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}
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public void setEmail(String email) {
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this.email = email;
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public double getSalary() {
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return salary;
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}
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public void setSalary(double salary) {
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this.salary = salary;
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}
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}

‎guest/logback-example/src/main/java/com/stackify/services/EmployeeService.java‎

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package com.stackify.services;
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import com.stackify.models.Employee;
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public class EmployeeService {
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public double calculateBonus(Employee user) {
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return 0.1 * user.getSalary();
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}
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}

‎guest/logback-example/src/main/resources/application.properties‎

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env=dev

‎guest/logback-example/src/main/resources/logback.xml‎

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<configuration debug="true">
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<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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<encoder>
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<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
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</encoder>
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<target>System.out</target>
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</appender>
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<property name="fileName" value="file.log" />
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<property scope="context" resource="application.properties" />
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<!-- configure appenders -->
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<appender name="rollingFileAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
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<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
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<fileNamePattern>log-%d{yyyy-MM-dd}.log</fileNamePattern>
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<maxHistory>30</maxHistory>
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<totalSizeCap>3GB</totalSizeCap>
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</rollingPolicy>
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<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
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<maxFileSize>3MB</maxFileSize>
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</triggeringPolicy>
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<encoder>
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<pattern>%d [%thread] %-5level %logger{50} - %msg%n</pattern>
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</encoder>
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</appender>
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<appender name="roleSiftingAppender" class="ch.qos.logback.classic.sift.SiftingAppender">
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<discriminator>
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<key>userRole</key>
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<defaultValue>ANONYMOUS</defaultValue>
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</discriminator>
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<sift>
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<appender name="fileAppender" class="ch.qos.logback.core.FileAppender">
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<file>${userRole}.log</file>
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<layout class="ch.qos.logback.classic.PatternLayout">
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<pattern>%d [%thread] %level %mdc %logger{50} - %msg%n</pattern>
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</layout>
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</appender>
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</sift>
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</appender>
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<!-- configure layouts -->
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<appender name="colorAppender" class="ch.qos.logback.core.ConsoleAppender">
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<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
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<pattern>%d %green([%thread]) %highlight(%level) %logger{50} - %msg%n</pattern>
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</encoder>
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</appender>
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<appender name="htmlAppender" class="ch.qos.logback.core.FileAppender">
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<encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
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<layout class="ch.qos.logback.classic.html.HTMLLayout">
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<pattern>%thread%level%logger%msg</pattern>
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</layout>
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</encoder>
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<file>log.html</file>
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</appender>
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<!-- configure filters -->
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<appender name="STDOUT_LEVEL_FILTER_APPENDER" class="ch.qos.logback.core.ConsoleAppender">
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<filter class="ch.qos.logback.classic.filter.LevelFilter">
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<level>ERROR</level>
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<onMatch>ACCEPT</onMatch>
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<onMismatch>DENY</onMismatch>
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</filter>
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<encoder>
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<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
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</encoder>
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<target>System.err</target>
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</appender>
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<appender name="STDOUT_THRESHOLD_FILTER_APPENDER" class="ch.qos.logback.core.ConsoleAppender">
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<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
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<level>WARN</level>
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</filter>
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<encoder>
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<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
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</encoder>
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</appender>
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<appender name="STDOUT_EVALUATOR_FILTER_APPENDER" class="ch.qos.logback.core.ConsoleAppender">
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<filter class="ch.qos.logback.core.filter.EvaluatorFilter">
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<evaluator class="ch.qos.logback.classic.boolex.JaninoEventEvaluator">
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<expression>return (level > DEBUG &amp;&amp; message.toLowerCase().contains("employee"));</expression>
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</evaluator>
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<OnMismatch>DENY</OnMismatch>
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<OnMatch>NEUTRAL</OnMatch>
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</filter>
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<encoder>
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<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
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</encoder>
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</appender>
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<!-- configure turbo filters -->
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<turboFilter class="ch.qos.logback.classic.turbo.DuplicateMessageFilter">
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<AllowedRepetitions>2</AllowedRepetitions>
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</turboFilter>
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<turboFilter class="com.stackify.logging.IgnoreLoggerFilter">
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<LoggerName>ignoredColorLogger</LoggerName>
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</turboFilter>
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<!-- configure loggers -->
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<logger level="info" name="rollingFileLogger" additivity="false">
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<appender-ref ref="rollingFileAppender" />
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</logger>
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<logger level="info" name="htmlLogger" additivity="false">
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<appender-ref ref="htmlAppender" />
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</logger>
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<logger level="info" name="roleSiftingLogger" additivity="false">
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<appender-ref ref="roleSiftingAppender" />
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</logger>
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<logger level="info" name="colorLogger" additivity="false">
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<appender-ref ref="colorAppender" />
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</logger>
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<logger level="info" name="ignoredColorLogger">
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<appender-ref ref="colorAppender" />
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</logger>
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<logger level="info" name="levelFilterLogger" additivity="false">
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<appender-ref ref="STDOUT_LEVEL_FILTER_APPENDER" />
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</logger>
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<logger level="info" name="thresholdFilterLogger" additivity="false">
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<appender-ref ref="STDOUT_THRESHOLD_FILTER_APPENDER" />
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</logger>
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<logger level="info" name="evaluatorFilterLogger" additivity="false">
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<appender-ref ref="STDOUT_EVALUATOR_FILTER_APPENDER" />
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</logger>
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<!-- configure root logger -->
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<root level="INFO">
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<appender-ref ref="STDOUT" />
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</root>
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<!-- configure root logger conditionally -->
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<property scope="context" resource="application.properties" />
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<if condition='property("env").equals("dev")'>
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<then>
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<root level="TRACE">
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<appender-ref ref="STDOUT" />
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</root>
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</then>
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</if>
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</configuration>

‎guest/logback-example/src/test/java/com/stackify/services/EmployeeServiceTest.java‎

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package com.stackify.services;
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import org.junit.Test;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.slf4j.MDC;
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import com.stackify.models.Employee;
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import ch.qos.logback.classic.Level;
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public class EmployeeServiceTest {
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private static final Logger logger = LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
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private EmployeeService employeeService = new EmployeeService();
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@Test
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public void testAppenders() {
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Logger rollingFileLogger = LoggerFactory.getLogger("rollingFileLogger");
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rollingFileLogger.info("Testing rolling file logger");
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MDC.put("userRole", "ADMIN");
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Logger siftingLogger = LoggerFactory.getLogger("roleSiftingLogger");
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siftingLogger.info("Admin Action");
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}
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@Test
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public void testLayouts() {
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Logger htmlLogger = LoggerFactory.getLogger("htmlLogger");
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htmlLogger.error("Employee Information Update Failed");
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htmlLogger.info("New Account Created");
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Logger colorLogger = LoggerFactory.getLogger("colorLogger");
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colorLogger.error("Employee Information Update Failed");
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colorLogger.info("New Account Created");
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}
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@Test
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public void testLogLevel() {
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ch.qos.logback.classic.Logger rollingFileLogger = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger("rollingFileLogger");
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rollingFileLogger.setLevel(Level.DEBUG);
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rollingFileLogger.debug("Testing Log Level");
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}
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@Test
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public void testParameter() {
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Employee employee = new Employee("john@gmail.com", "John", 2000);
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if (logger.isDebugEnabled()) {
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logger.debug("The bonus for employee: " + employee.getName() + " is " + employeeService.calculateBonus(employee));
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}
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logger.debug("The bonus for employee {} is {}", employee.getName(), employeeService.calculateBonus(employee));
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}
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@Test
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public void testFilters() {
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Logger levelFilterLogger = LoggerFactory.getLogger("levelFilterLogger");
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levelFilterLogger.error("Employee Information Update Failed");
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Logger thresholdFilterLogger = LoggerFactory.getLogger("thresholdFilterLogger");
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thresholdFilterLogger.trace("Employee record inserted");
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Logger evaluatorFilterLogger = LoggerFactory.getLogger("evaluatorFilterLogger");
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evaluatorFilterLogger.debug("Employee account deactivated");
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}
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@Test
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public void testIgnoredLogger() {
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Logger colorLogger = LoggerFactory.getLogger("ignoredColorLogger");
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colorLogger.info("Ignored Log Message");
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}
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@Test
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public void testConditionalConfiguration() {
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logger.trace("Employee record updated");
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}
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}

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