fix: properly work if listing ns is denied (redhat-developer#717)

Signed-off-by: Andre Dietisheim <[email protected]>

Author: adietish

Diff for: src/main/kotlin/com/redhat/devtools/intellij/kubernetes/tree/KubernetesDescriptors.kt

@@ -11,12 +11,15 @@
 package com.redhat.devtools.intellij.kubernetes.tree
 
 import com.intellij.ide.util.treeView.NodeDescriptor
+import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.IconLoader
 import com.redhat.devtools.intellij.kubernetes.model.IResourceModel
 import com.redhat.devtools.intellij.kubernetes.model.context.KubernetesContext
 import com.redhat.devtools.intellij.kubernetes.model.resource.ResourceKind
 import com.redhat.devtools.intellij.kubernetes.model.util.getHighestPriorityVersion
+import com.redhat.devtools.intellij.kubernetes.model.util.toMessage
+import com.redhat.devtools.intellij.kubernetes.model.util.trimWithEllipsis
 import com.redhat.devtools.intellij.kubernetes.tree.AbstractTreeStructureContribution.DescriptorFactory
 import com.redhat.devtools.intellij.kubernetes.tree.KubernetesStructure.NamespacesFolder
 import com.redhat.devtools.intellij.kubernetes.tree.TreeStructure.ContextDescriptor
@@ -123,14 +126,19 @@ object KubernetesDescriptors {
 		project
 	) {
 		override fun getSubLabel(element: Folder): String {
-			val current = model.getCurrentNamespace()
-			return "current: ${
-				if (current.isNullOrEmpty()) {
-					"<none>"
-				} else {
-					current
+				val current = try {
+					model.getCurrentNamespace()
+				} catch (e: Exception) {
+					logger<KubernetesDescriptors>().warn("Could not get current namespace", e)
+					"<none> (error retrieving all namespaces)"
 				}
-			}"
+				return "current: ${
+					if (current.isNullOrEmpty()) {
+						"<none>"
+					} else {
+						current
+					}
+				}"
 		}
 	}