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Posted to log4j-dev@logging.apache.org by "LC (JIRA)" <ji...@apache.org> on 2015/09/30 06:10:04 UTC
[jira] [Created] (LOG4J2-1141) resources/log4j2.xml is not loaded
if a subproject contains another config file
LC created LOG4J2-1141:
--------------------------
Summary: resources/log4j2.xml is not loaded if a subproject contains another config file
Key: LOG4J2-1141
URL: https://issues.apache.org/jira/browse/LOG4J2-1141
Project: Log4j 2
Issue Type: Bug
Components: Lookups
Affects Versions: 2.4
Environment: Tomcat 8.0.26, Gradle 2.7, Spring Boot 1.2.6, Log4j2 2.4 (and Eclipse Mars (4.5.0))
Reporter: LC
{code:title=build.gradle}
buildscript {
repositories.mavenCentral()
dependencies.classpath 'org.springframework.boot:spring-boot-gradle-plugin:1.2.6.RELEASE'
}
subprojects {
apply plugin: 'spring-boot'
apply plugin: 'eclipse-wtp'
sourceCompatibility = '1.8'
repositories.mavenCentral()
dependencies {
compile 'org.apache.logging.log4j:log4j-api:2.4'
compile 'org.apache.logging.log4j:log4j-core:2.4'
compile 'org.apache.logging.log4j:log4j-slf4j-impl:2.4'
compile 'org.apache.logging.log4j:log4j-web:2.4'
}
task wrapper(type: Wrapper) {
gradleVersion = '2.7'
}
eclipse.classpath {
containers.remove('org.eclipse.jdt.launching.JRE_CONTAINER')
containers 'org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8'
}
}
{code}
{code:title=settings.gradle}
include 'child', 'main'
{code}
{code:title=main/build.gradle}
apply plugin: 'war'
configurations.compile.exclude module : 'spring-boot-starter-logging'
dependencies {
compile project(':child')
compile 'org.springframework.boot:spring-boot-starter-log4j2'
compile 'org.springframework.boot:spring-boot-starter-web'
}
eclipse.wtp.facet.file.withXml { n -> n.asNode().installed.find { it.@facet == 'jst.web' }.@version = '3.1' }
{code}
{code:title=main/src/main/java/loggertest/Application.java}
package loggertest;
import java.net.URI;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.core.LoggerContext;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.embedded.ServletContextInitializer;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.web.context.WebApplicationContext;
@SpringBootApplication
public class Application {
public static class Initializer extends SpringBootServletInitializer implements ServletContextInitializer {
@Override
protected SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
LogManager.getLogger(Application.class).debug("configure()");
return application.sources(Application.class);
}
@Override
protected WebApplicationContext run(final SpringApplication application) {
application.addListeners(new LoggerContextInfo());
return super.run(application);
}
}
static class LoggerContextInfo implements ApplicationListener<ApplicationEvent> {
@Override
public void onApplicationEvent(final ApplicationEvent event) {
final LoggerContext ctx = LoggerContext.getContext();
final URI loc = ctx.getConfigLocation();
System.err.println(String.format("\nevent = %s\nlogCtx.cfg@%X = %s\nlogCtx.cfgLoc@%X = %s\n", event.getClass(),
ctx.getConfiguration().hashCode(), ctx.getConfiguration(), (loc != null ? loc.hashCode() : 0), loc));
}
}
public static void main(final String[] args) {
SpringApplication.run(new Class[] { Application.class, Initializer.class }, args);
}
}
{code}
{code:xml|title=main/src/main/webapp/WEB-INF/web.xml - see issue: LOG4J2-873}
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1" metadata-complete="false">
<display-name>dummy</display-name>
</web-app>
{code}
{code:xml|title=main/src/main/resource/log4j2.xml}
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO" strict="true">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="MY_LOGGER %-5p %d [%t][%c{1}]: %m%n"/>
</Console>
</Appenders>
<Loggers>
<Logger name="org.springframework" level="WARN"/>
<Logger name="loggertest" level="DEBUG"/>
<Root level="DEBUG">
<AppenderRef ref="Console"/>
</Root>
</Loggers>
</Configuration>
{code}
{code:title=child/build.gradle}
startScripts.enabled = false
{code}
{code:xml|title=child/src/main/resources/log4j2-test.xml}
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO" strict="true">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="CHILD_LOGGER %-5p %d [%t][%c{1}]: %m%n"/>
</Console>
</Appenders>
<Loggers>
<Logger name="org.springframework" level="WARN"/>
<Logger name="loggertest" level="DEBUG"/>
<Root level="DEBUG">
<AppenderRef ref="Console"/>
</Root>
</Loggers>
</Configuration>
{code}
Results with *main/src/main/resources/log4j2.xml*:
{code}
event = class org.springframework.boot.context.event.ApplicationStartedEvent
logCtx.cfg@37E5AA81 = XmlConfiguration[location=jar:file:/[...]/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/main/WEB-INF/lib/child.jar!/log4j2-test.xml]
logCtx.cfgLoc@0 = null
event = class org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent
logCtx.cfg@B9FC71B = XmlConfiguration[location=jar:file:/[...]/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/main/WEB-INF/lib/child.jar!/log4j2-test.xml]
logCtx.cfgLoc@0 = null
{code}
Moving log4j2.xml from resources to *main/src/main/webapp/WEB-INF* will let log4j2 initialize with the correct config file, however thanks to another [issue in spring-boot|https://github.com/spring-projects/spring-boot/issues/4055] this will be overwritten (note how the configLocation field would still point to the original file):
{code}
event = class org.springframework.boot.context.event.ApplicationStartedEvent
logCtx.cfg@5F77D5DB = XmlConfiguration[location=[...]\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\main\WEB-INF\log4j2.xml]
logCtx.cfgLoc@E93E026A = file:/[...]/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/main/WEB-INF/log4j2.xml
event = class org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent
logCtx.cfg@F8561F3 = XmlConfiguration[location=jar:file:/[...]/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/main/WEB-INF/lib/spring-boot-1.2.6.RELEASE.jar!/org/springframework/boot/logging/log4j2/log4j2.xml]
logCtx.cfgLoc@E93E026A = file:/[...]/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/main/WEB-INF/log4j2.xml
{code}
Duplication the config file in *main/src/main/resources/log4j2.xml* and *main/src/main/webapp/WEB-INF* "solves" the issue -- if you consider code duplication a solution. (The new config object is the result of the aforementioned spring-boot bug.)
{code}
event = class org.springframework.boot.context.event.ApplicationStartedEvent
logCtx.cfg@35DFF1ED = XmlConfiguration[location=[...]\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\main\WEB-INF\log4j2.xml]
logCtx.cfgLoc@E93E026A = file:/[...]/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/main/WEB-INF/log4j2.xml
event = class org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent
logCtx.cfg@59A0B4D = XmlConfiguration[location=[...]\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\main\WEB-INF\log4j2.xml]
logCtx.cfgLoc@E93E026A = file:/[...]/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/main/WEB-INF/log4j2.xml
{code}
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