Some code cleanup

theodolite/src/main/kotlin/rocks/theodolite/kubernetes/patcher/VolumesConfigMapPatcher.kt

@@ -7,37 +7,28 @@ import io.fabric8.kubernetes.api.model.apps.StatefulSet
 class VolumesConfigMapPatcher(private var volumeName: String) : AbstractStringPatcher() {
 
     override fun patchSingleResource(resource: HasMetadata, value: String): HasMetadata {
-        if (resource is Deployment) {
-            if (resource.spec.template.spec.volumes == null) {
-                resource.spec.template.spec.volumes = mutableListOf()
+        val volumeMounts = when(resource) {
+            is Deployment -> {
+                if (resource.spec.template.spec.volumes == null) {
+                    resource.spec.template.spec.volumes = mutableListOf()
+                }
+                resource.spec.template.spec.volumes
             }
-            val volumeMounts = resource.spec.template.spec.volumes
-
-            for (mount in volumeMounts) {
-                try {
-                    if (mount.configMap.name == volumeName) {
-                        mount.configMap.name = value
-                    }
-                } catch (_: NullPointerException) {
+            is StatefulSet -> {
+                if (resource.spec.template.spec.volumes == null) {
+                    resource.spec.template.spec.volumes = mutableListOf()
                 }
+                resource.spec.template.spec.volumes
             }
+            else -> emptyList() // No volumes to patch
         }
-        if (resource is StatefulSet) {
-            if (resource.spec.template.spec.volumes == null) {
-                resource.spec.template.spec.volumes = mutableListOf()
-            }
-            val volumeMounts = resource.spec.template.spec.volumes
 
-            for (mount in volumeMounts) {
-                try {
-                    if (mount.configMap.name == volumeName) {
-                        mount.configMap.name = value
-                    }
-                } catch (_: NullPointerException) {
-                }
+        for (mount in volumeMounts) {
+            // Find ConfigMap volume with requested name
+            if (mount.configMap?.name?.equals(volumeName) == true) {
+                mount.configMap.name = value
             }
         }
-
         return resource
     }
 }
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