[EAP7-1386] additional ConfigSources are always initialized ----------------------------------------------------------- Key: WFWIP-314 URL: https://issues.redhat.com/browse/WFWIP-314 Project: WildFly WIP Issue Type: Quality Risk Reporter: Petr Kremensky Assignee: Ronald Sigal Priority: Minor I've noticed that three additional config sources provided by EAP7-1386 are always registered among config sources, even they are empty. I'll probably reject this one myself soon :) as I still have to look into the implementation of SPI for mp config, so I can assume that this is just out of box behaviour we have no control over. Test with a simple servlet from [helloworld|https://github.com/wildfly/quickstart/tree/master/helloworld] quickstart with following addition: {code:java} ConfigProvider.getConfig().getConfigSources().forEach(configSource -> { System.out.println("================================="); System.out.println(configSource.getName()); System.out.println(configSource.getOrdinal()); System.out.println("Property names: " + configSource.getPropertyNames().stream().collect(Collectors.joining(", "))); }); {code} output: {noformat} ================================= SysPropConfigSource 400 [Standalone], awt.toolkit, ... ================================= EnvConfigSource 300 PATH, INVOCATION_ID, ... ================================= null:null:ServletConfigSource 60 ================================= null:null:FilterConfigSource 50 ================================= null:ServletContextConfigSource 40 {noformat} Notice that {{PropertiesConfigSource}} is missing there as none was put to classpath. On the other hand {PropertiesConfigSource} is present once added to classpath, even it is empty. {noformat} ... ================================= PropertiesConfigSource[source=vfs:/content/helloworld.war/WEB-INF/classes/META-INF/microprofile-config.properties] 100 Property names: ================================= null:null:ServletConfigSource 60 Property names: ================================= null:null:FilterConfigSource 50 Property names: ================================= null:ServletContextConfigSource 40 Property names: {noformat} As stated before, I'd probably close this one myself once I'll take deeper look into it.