Rafał Figas created LOG4J2-2943:
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Summary: Exception in Log4j2CloudConfigLoggingSystem
Key: LOG4J2-2943
URL: https://issues.apache.org/jira/browse/LOG4J2-2943
Project: Log4j 2
Issue Type: Bug
Components: Spring
Affects Versions: 2.13.3
Environment: This code was called in dockerized springboot application
so environment recreating is not easy, but error seems to be pretty obvious.
Reporter: Rafał Figas
Exception is thrown at line 92 of class Log4j2CloudConfigLoggingSystem.
Reason is pretty simple:
{noformat}
String location =
props.getStringProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY);
if (location != null) {
List<String> list =
Arrays.asList(super.getStandardConfigLocations());
list.add(location);
locations = list.toArray(new String[0]);
}
{noformat}
Method {{Arrays.asList()}} returns *fixed size list*, so the next line call
{{list.add(location);}} causes exception:
java.lang.UnsupportedOperationException: null
at java.util.AbstractList.add(AbstractList.java:148) ~[?:1.8.0_265]
at java.util.AbstractList.add(AbstractList.java:108) ~[?:1.8.0_265]
at
org.apache.logging.log4j.spring.cloud.config.client.Log4j2CloudConfigLoggingSystem.getStandardConfigLocations(Log4j2CloudConfigLoggingSystem.java:92)
~[log4j-spring-cloud-config-client-2.13.3.jar:2.13.3]
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