gryn-alina opened a new issue, #4047:
URL: https://github.com/apache/logging-log4j2/issues/4047
## Description
In the MuleSoft API we are configured to send logs to Syslog over TLS
protocol. The configuration is following in log4j2.xml
<Syslog name="syslogTls" host="${sys:syslog.host}" port="${sys:syslog.port}"
protocol="SSL"
format="RFC5424" appName="e-shopxp-api"
facility="LOCAL0"
includeMDC="false" mdcId="muleMdc"
enterpriseNumber="${sys:syslog.enterpriseNumber}"
newLine="true" ignoreExceptions="true">
<!-- Accept ONLY INFO, deny all other levels -->
<LevelMatchFilter level="INFO"
onMismatch="DENY"/>
<!-- JSON payload inside RFC5424 -->
<RFC5424Layout
enterpriseNumber="${sys:syslog.enterpriseNumber}" includeMDC="false"
appName="e-shopxp-api" includeNL="true"
charset="UTF-8" /> </Syslog>
It worked, however, after upgrading the runtime version from 4.9.8 to 4.10.2
and 4.10.3, the following error is returned(locally):
Cannot invoke
"org.apache.logging.log4j.core.net.ssl.AbstractKeyStoreConfiguration.getKeyStore()"
because "keyStoreConfig" is null
at
[email protected]/org.apache.logging.log4j.core.net.SslSocketManager.lambda$createSslConfigurationId$1(SslSocketManager.java:251)
<img width="960" height="970" alt="Image"
src="https://github.com/user-attachments/assets/4e3f56f2-0cf1-41ae-9f23-f1c4d3edbc10";
/>
## Configuration
**Version:** 4.10.3 - v2.25.3, 4.10.2 - 2.25.1
**Operating system:** [OS and version]
**JDK:** JDK 17
## Logs
```
2026-02-04T17:02:30.084233700Z WrapperListener_start_runner DEBUG Building
Plugin[name=filter,
class=org.apache.logging.log4j.core.filter.LevelMatchFilter].
2026-02-04T17:02:30.085233200Z WrapperListener_start_runner DEBUG
LevelMatchFilter$Builder(level="INFO", , , onMatch="null", onMismatch="DENY")
2026-02-04T17:02:30.085233200Z WrapperListener_start_runner DEBUG Building
Plugin[name=layout, class=org.apache.logging.log4j.core.layout.Rfc5424Layout].
2026-02-04T17:02:30.089521600Z WrapperListener_start_runner DEBUG
Rfc5424Layout$Rfc5424LayoutBuilder(facility="null", id="null", ein="null",
enterpriseNumber="18060", includeMDC="false", includeNL="true",
escapeNL="null", mdcId="null", mdcPrefix="null", eventPrefix="null",
appName="e-shopxp-api", messageId="null", excludes="null", includes="null",
required="null", exceptionPattern="null", useTLSMessageFormat="null", ={},
charset="UTF-8", footerSerializer=null, headerSerializer=null,
Configuration(C:\AnypointStudio\plugins\org.mule.tooling.server.4.10.ee_7.22.0.202511192101\mule\apps\e-shopxp-api\log4j2.xml),
footer="null", header="null")
2026-02-04T17:02:30.089521600Z WrapperListener_start_runner DEBUG
PluginManager 'Converter' found 48 plugins
2026-02-04T17:02:30.096936200Z WrapperListener_start_runner DEBUG Building
Plugin[name=appender,
class=org.apache.logging.log4j.core.appender.SyslogAppender].
2026-02-04T17:02:30.103003400Z WrapperListener_start_runner DEBUG
SyslogAppender$Builder(facility="LOCAL0", id="null", enterpriseNumber="18060",
includeMdc="false", mdcId="muleMdc", mdcPrefix="null", eventPrefix="null",
newLine="true", newLineEscape="null", appName="e-shopxp-api", messageId="null",
mdcExcludes="null", mdcIncludes="null", mdcRequired="null", format="RFC5424",
charset="null", exceptionPattern="null", ={}, advertise="null",
connectTimeoutMillis="null", host="logde.wsa-svc.net", immediateFail="null",
port="6514", protocol="SSL", reconnectDelayMillis="null", SocketOptions=null,
SslConfiguration=null, bufferedIo="null", bufferSize="null",
immediateFlush="null", ignoreExceptions="true", RFC5424Layout(facility=LOCAL0
appName=e-shopxp-api defaultId=Audit enterpriseNumber=18060 newLine=true
includeMDC=false messageId=null), name="syslogTls",
Configuration(C:\AnypointStudio\plugins\org.mule.tooling.server.4.10.ee_7.22.0.202511192101\mule\apps\e-shopxp-api\log4j2.xml),
LevelM
atchFilter(INFO), ={})
2026-02-04T17:02:30.105003800Z WrapperListener_start_runner ERROR Could not
create plugin of type class
org.apache.logging.log4j.core.appender.SyslogAppender for element Syslog:
java.lang.NullPointerException: Cannot invoke
"org.apache.logging.log4j.core.net.ssl.SslConfiguration.getKeyStoreConfig()"
because "sslConfig" is null
java.lang.NullPointerException: Cannot invoke
"org.apache.logging.log4j.core.net.ssl.SslConfiguration.getKeyStoreConfig()"
because "sslConfig" is null
at
[email protected]/org.apache.logging.log4j.core.net.SslSocketManager.createSslConfigurationId(SslSocketManager.java:247)
at
[email protected]/org.apache.logging.log4j.core.net.SslSocketManager.getSocketManager(SslSocketManager.java:222)
at
[email protected]/org.apache.logging.log4j.core.appender.SocketAppender.createSocketManager(SocketAppender.java:579)
at
[email protected]/org.apache.logging.log4j.core.appender.SyslogAppender$Builder.build(SyslogAppender.java:151)
at
[email protected]/org.apache.logging.log4j.core.appender.SyslogAppender$Builder.build(SyslogAppender.java:49)
at
[email protected]/org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:124)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1206)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1125)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1117)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:715)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:271)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:324)
at
[email protected]/org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:697)
at
[email protected]/org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:786)
at
[email protected]/org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:808)
at
[email protected]/org.mule.runtime.module.log4j.internal.MuleLoggerContext.reconfigure(MuleLoggerContext.java:96)
at
[email protected]/org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:311)
at
[email protected]/org.mule.runtime.module.log4j.internal.LoggerContextCache.getLoggerContext(LoggerContextCache.java:137)
at
[email protected]/org.mule.runtime.module.log4j.internal.ArtifactAwareContextSelector.getContextWithResolvedContextClassLoader(ArtifactAwareContextSelector.java:83)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.resolveLogger(DispatchingLogger.java:166)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.getLogger(DispatchingLogger.java:141)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.getLogger(DispatchingLogger.java:105)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.getLogger(DispatchingLogger.java:76)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.logIfEnabled(DispatchingLogger.java:1753)
at
[email protected]/org.apache.logging.slf4j.Log4jLogger.debug(Log4jLogger.java:113)
at
[email protected]/org.mule.runtime.core.internal.context.DefaultMuleContextBuilder.buildMuleContext(DefaultMuleContextBuilder.java:89)
at
[email protected]/org.mule.runtime.core.api.context.DefaultMuleContextFactory.buildMuleContext(DefaultMuleContextFactory.java:191)
at
[email protected]/org.mule.runtime.core.api.context.DefaultMuleContextFactory.doCreateMuleContext(DefaultMuleContextFactory.java:165)
at
[email protected]/org.mule.runtime.core.api.context.DefaultMuleContextFactory.createMuleContext(DefaultMuleContextFactory.java:60)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.artifact.ArtifactContextBuilder.lambda$build$2(ArtifactContextBuilder.java:544)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.tryExpecting(ClassUtils.java:211)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.withContextClassLoader(ClassUtils.java:148)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.withContextClassLoader(ClassUtils.java:66)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.artifact.ArtifactContextBuilder.build(ArtifactContextBuilder.java:446)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.application.DefaultMuleApplication.doInit(DefaultMuleApplication.java:293)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.application.DefaultMuleApplication.init(DefaultMuleApplication.java:245)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.tryExpecting(ClassUtils.java:252)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.withContextClassLoader(ClassUtils.java:105)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.withContextClassLoader(ClassUtils.java:43)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.artifact.DeployableArtifactWrapper.executeWithinArtifactClassLoader(DeployableArtifactWrapper.java:156)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.artifact.DeployableArtifactWrapper.init(DeployableArtifactWrapper.java:89)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArtifactDeployer.doInit(DefaultArtifactDeployer.java:162)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:68)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployArtifact(DefaultArchiveDeployer.java:531)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployArtifact(DefaultArchiveDeployer.java:520)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.internalDeployPackagedArtifact(DefaultArchiveDeployer.java:638)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployOrRedeployPackagedArtifact(DefaultArchiveDeployer.java:603)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployPackagedArtifact(DefaultArchiveDeployer.java:436)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployPackagedArtifact(DefaultArchiveDeployer.java:60)
at
[email protected]/org.mule.runtime.module.deployment.internal.DeploymentDirectoryWatcher.deployPackedApps(DeploymentDirectoryWatcher.java:280)
at
[email protected]/org.mule.runtime.module.deployment.internal.DeploymentDirectoryWatcher.run(DeploymentDirectoryWatcher.java:351)
at
[email protected]/org.mule.runtime.module.deployment.internal.DeploymentDirectoryWatcher.start(DeploymentDirectoryWatcher.java:172)
at
[email protected]/org.mule.runtime.module.deployment.internal.MuleDeploymentService.start(MuleDeploymentService.java:177)
at
[email protected]/org.mule.runtime.module.deployment.internal.MuleDeploymentService.start(MuleDeploymentService.java:159)
at
[email protected]/org.mule.runtime.module.launcher.DefaultMuleContainer.start(DefaultMuleContainer.java:239)
at
[email protected]/org.mule.runtime.module.launcher.DefaultMuleContainer.start(DefaultMuleContainer.java:198)
at
[email protected]/org.mule.runtime.module.boot.tanuki.internal.MuleContainerTanukiWrapperListener.startWithContainerClassLoader(MuleContainerTanukiWrapperListener.java:140)
at
[email protected]/org.mule.runtime.module.boot.tanuki.internal.MuleContainerTanukiWrapperListener.start(MuleContainerTanukiWrapperListener.java:62)
at
[email protected]/org.tanukisoftware.wrapper.WrapperManager$11.run(WrapperManager.java:4537)
2026-02-04T17:02:30.105003800Z WrapperListener_start_runner ERROR Unable to
invoke factory method in class
org.apache.logging.log4j.core.appender.SyslogAppender for element Syslog:
java.lang.IllegalStateException: No factory method found for class
org.apache.logging.log4j.core.appender.SyslogAppender
java.lang.IllegalStateException: No factory method found for class
org.apache.logging.log4j.core.appender.SyslogAppender
at
[email protected]/org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.findFactoryMethod(PluginBuilder.java:268)
at
[email protected]/org.apache.logging.log4j.core.config.plugins.util.PluginBuilder.build(PluginBuilder.java:140)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.createPluginObject(AbstractConfiguration.java:1206)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1125)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.createConfiguration(AbstractConfiguration.java:1117)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.doConfigure(AbstractConfiguration.java:715)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.initialize(AbstractConfiguration.java:271)
at
[email protected]/org.apache.logging.log4j.core.config.AbstractConfiguration.start(AbstractConfiguration.java:324)
at
[email protected]/org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:697)
at
[email protected]/org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:786)
at
[email protected]/org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:808)
at
[email protected]/org.mule.runtime.module.log4j.internal.MuleLoggerContext.reconfigure(MuleLoggerContext.java:96)
at
[email protected]/org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:311)
at
[email protected]/org.mule.runtime.module.log4j.internal.LoggerContextCache.getLoggerContext(LoggerContextCache.java:137)
at
[email protected]/org.mule.runtime.module.log4j.internal.ArtifactAwareContextSelector.getContextWithResolvedContextClassLoader(ArtifactAwareContextSelector.java:83)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.resolveLogger(DispatchingLogger.java:166)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.getLogger(DispatchingLogger.java:141)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.getLogger(DispatchingLogger.java:105)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.getLogger(DispatchingLogger.java:76)
at
[email protected]/org.mule.runtime.module.log4j.internal.DispatchingLogger.logIfEnabled(DispatchingLogger.java:1753)
at
[email protected]/org.apache.logging.slf4j.Log4jLogger.debug(Log4jLogger.java:113)
at
[email protected]/org.mule.runtime.core.internal.context.DefaultMuleContextBuilder.buildMuleContext(DefaultMuleContextBuilder.java:89)
at
[email protected]/org.mule.runtime.core.api.context.DefaultMuleContextFactory.buildMuleContext(DefaultMuleContextFactory.java:191)
at
[email protected]/org.mule.runtime.core.api.context.DefaultMuleContextFactory.doCreateMuleContext(DefaultMuleContextFactory.java:165)
at
[email protected]/org.mule.runtime.core.api.context.DefaultMuleContextFactory.createMuleContext(DefaultMuleContextFactory.java:60)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.artifact.ArtifactContextBuilder.lambda$build$2(ArtifactContextBuilder.java:544)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.tryExpecting(ClassUtils.java:211)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.withContextClassLoader(ClassUtils.java:148)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.withContextClassLoader(ClassUtils.java:66)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.artifact.ArtifactContextBuilder.build(ArtifactContextBuilder.java:446)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.application.DefaultMuleApplication.doInit(DefaultMuleApplication.java:293)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.application.DefaultMuleApplication.init(DefaultMuleApplication.java:245)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.tryExpecting(ClassUtils.java:252)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.withContextClassLoader(ClassUtils.java:105)
at
[email protected]/org.mule.runtime.core.internal.util.ClassUtils.withContextClassLoader(ClassUtils.java:43)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.artifact.DeployableArtifactWrapper.executeWithinArtifactClassLoader(DeployableArtifactWrapper.java:156)
at
[email protected]/org.mule.runtime.module.deployment.impl.internal.artifact.DeployableArtifactWrapper.init(DeployableArtifactWrapper.java:89)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArtifactDeployer.doInit(DefaultArtifactDeployer.java:162)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArtifactDeployer.deploy(DefaultArtifactDeployer.java:68)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployArtifact(DefaultArchiveDeployer.java:531)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployArtifact(DefaultArchiveDeployer.java:520)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.internalDeployPackagedArtifact(DefaultArchiveDeployer.java:638)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployOrRedeployPackagedArtifact(DefaultArchiveDeployer.java:603)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployPackagedArtifact(DefaultArchiveDeployer.java:436)
at
[email protected]/org.mule.runtime.module.deployment.internal.DefaultArchiveDeployer.deployPackagedArtifact(DefaultArchiveDeployer.java:60)
at
[email protected]/org.mule.runtime.module.deployment.internal.DeploymentDirectoryWatcher.deployPackedApps(DeploymentDirectoryWatcher.java:280)
at
[email protected]/org.mule.runtime.module.deployment.internal.DeploymentDirectoryWatcher.run(DeploymentDirectoryWatcher.java:351)
at
[email protected]/org.mule.runtime.module.deployment.internal.DeploymentDirectoryWatcher.start(DeploymentDirectoryWatcher.java:172)
at
[email protected]/org.mule.runtime.module.deployment.internal.MuleDeploymentService.start(MuleDeploymentService.java:177)
at
[email protected]/org.mule.runtime.module.deployment.internal.MuleDeploymentService.start(MuleDeploymentService.java:159)
at
[email protected]/org.mule.runtime.module.launcher.DefaultMuleContainer.start(DefaultMuleContainer.java:239)
at
[email protected]/org.mule.runtime.module.launcher.DefaultMuleContainer.start(DefaultMuleContainer.java:198)
at
[email protected]/org.mule.runtime.module.boot.tanuki.internal.MuleContainerTanukiWrapperListener.startWithContainerClassLoader(MuleContainerTanukiWrapperListener.java:140)
at
[email protected]/org.mule.runtime.module.boot.tanuki.internal.MuleContainerTanukiWrapperListener.start(MuleContainerTanukiWrapperListener.java:62)
at
[email protected]/org.tanukisoftware.wrapper.WrapperManager$11.run(WrapperManager.java:4537)
```
## Reproduction
[An isolated test reproducing the test.
JUnit tests similar to the ones in the code base are extremely appreciated.]
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