[jboss-jira] [JBoss JIRA] (WFWIP-314) [EAP7-1386] additional ConfigSources are always initialized

[Petr Kremensky (Jira)]

Petr Kremensky created WFWIP-314:
------------------------------------

             Summary: [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


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.







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