Fatal exception with malformed MessageCenter.log4j.properties file

[etatara]

If the MessageCenter.log4j.properties file in the project root is out of date or malformed in some way, the runtime will throw an exception. This can happen with the GUI runtime and in batch. We should perform input validation on the MessageCenter.log4j.properties file and use a default configuration if missing, and throw a warning instead.

The MessageCenter.log4j.properties can be out of data from a Repast 1.x model or user-edited incorrectly, so we should account for multiple paths that can corrupt the file.

[etatara]

Stack trace from a batch run:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
      at repast.simphony.batch.gui.BatchConfigMediator.<init>(BatchConfigMediator.java:85)
      at repast.simphony.batch.gui.BatchConfigMediator.<init>(BatchConfigMediator.java:77)
      at repast.simphony.batch.gui.MainPanel.<init>(MainPanel.java:27)
      at repast.simphony.batch.gui.ShowBatchDialog.actionPerformed(ShowBatchDialog.java:38)
      at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
      at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2308)
      at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
      at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
      at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279)
      at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:297)
      at java.desktop/java.awt.Component.processMouseEvent(Component.java:6635)
      at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342)
      at java.desktop/java.awt.Component.processEvent(Component.java:6400)
      at java.desktop/java.awt.Container.processEvent(Container.java:2263)
      at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5011)
      at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
      at java.desktop/java.awt.Component.dispatchEvent(Component.java:4843)
      at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
      at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547)
      at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
      at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
      at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2772)
      at java.desktop/java.awt.Component.dispatchEvent(Component.java:4843)
      at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
      at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
      at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
      at java.base/java.security.AccessController.doPrivileged(Native Method)
      at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
      at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
      at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
      at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
      at java.base/java.security.AccessController.doPrivileged(Native Method)
      at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
      at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
      at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
      at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
      at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
      at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
      at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
      at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

[etatara]

Possible source location of error in batch:

repast.simphony/repast.simphony.distributed.batch.ui/src/repast/simphony/batch/gui/BatchConfigMediator.java

Line 85 in 200de2e

Layout layout = stdout.getLayout();