java.lang.NullPointerException: Cannot invoke "com.google.idea.blaze.base.toolwindow.ConsoleView.getContent()" because the return value of "java.util.Map.get(Object)" is null

[ujohnny]

Description of the bug:

Sometimes when Sync operation is invoked the following exception might occur. I checked briefly and it's caused by a race condition when event to select console in task tree arrives before the console is added to consolesOfTasks map.

java.lang.NullPointerException: Cannot invoke "com.google.idea.blaze.base.toolwindow.ConsoleView.getContent()" because the return value of "java.util.Map.get(Object)" is null
	at com.google.idea.blaze.base.toolwindow.TasksTreeConsoleView.treeSelectionChanged(TasksTreeConsoleView.java:95)
	at com.google.idea.common.ui.properties.Property.triggerChangeListeners(Property.java:97)
	at com.google.idea.common.ui.properties.Property.setValue(Property.java:80)
	at com.google.idea.blaze.base.toolwindow.TasksTreeView$TaskNodeAutoExpandingListener.treeNodesInserted(TasksTreeView.java:387)
	at com.intellij.util.ui.tree.TreeModelListenerList.treeNodesInserted(TreeModelListenerList.java:85)
	at com.intellij.ui.tree.AsyncTreeModel.treeNodesInserted(AsyncTreeModel.java:364)
	at com.intellij.ui.tree.AsyncTreeModel$CmdGetChildren.setNode(AsyncTreeModel.java:663)
	at com.intellij.ui.tree.AsyncTreeModel$Command.accept(AsyncTreeModel.java:475)
	at com.intellij.ui.tree.AsyncTreeModel.lambda$submit$12(AsyncTreeModel.java:293)
	at com.intellij.util.concurrency.Invoker$Wrapper.get(Invoker.java:329)
	at com.intellij.util.concurrency.Invoker$Wrapper.get(Invoker.java:320)
	at com.intellij.util.concurrency.Invoker$Task.run(Invoker.java:306)
...stripped

What's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

Invoke sync operation. Not 100% reproducible

Which Intellij IDE are you using? Please provide the specific version.

CLion-233.9802.5

What programming languages and tools are you using? Please provide specific versions.

No response

What Bazel plugin version are you using?

2a027bd

Have you found anything relevant by searching the web?

No response

Any other information, logs, or outputs that you want to share?

No response

[iancha1992]

@ujohnny Could you please provide sample code to reproduce this issue? Thanks.

[ujohnny]

@iancha1992 sample code is not required. Any project from examples can be used to reproduce the issue.

[tpasternak]

Fixed in #5665