fix: allow to compare client- and fileconfig-contexts (redhat-develop…

…er#201)

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

src/main/java/com/redhat/devtools/intellij/common/utils/ContextHelper.java

@@ -0,0 +1,58 @@
+/*******************************************************************************
+ * Copyright (c) 2023 Red Hat, Inc.
+ * Distributed under license by Red Hat, Inc. All rights reserved.
+ * This program is made available under the terms of the
+ * Eclipse Public License v2.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v20.html
+ *
+ * Contributors:
+ * Red Hat, Inc. - initial API and implementation
+ ******************************************************************************/
+package com.redhat.devtools.intellij.common.utils;
+
+import io.fabric8.kubernetes.api.model.Config;
+import io.fabric8.kubernetes.api.model.NamedContext;
+import io.fabric8.kubernetes.client.internal.KubeConfigUtils;
+import org.apache.commons.codec.binary.StringUtils;
+
+public class ContextHelper {
+
+    private ContextHelper() {
+    }
+
+    public static boolean hasChanged(Config newConfig, Config currentConfig) {
+        NamedContext currentContext = currentConfig != null?
+                KubeConfigUtils.getCurrentContext(currentConfig) : null;
+        NamedContext newContext = newConfig != null ?
+                KubeConfigUtils.getCurrentContext(newConfig) : null;
+        return hasChanged(newContext, currentContext)
+                || hasNewToken(newContext, newConfig, currentContext, currentConfig);
+    }
+
+    private static boolean hasChanged(NamedContext newContext, NamedContext currentContext) {
+        return newContext == null
+                || currentContext == null
+                || !StringUtils.equals(currentContext.getContext().getCluster(),
+                        newContext.getContext().getCluster())
+                || !StringUtils.equals(currentContext.getContext().getUser(),
+                        newContext.getContext().getUser())
+                || !StringUtils.equals(currentContext.getContext().getNamespace(),
+                        newContext.getContext().getNamespace());
+    }
+
+    private static boolean hasNewToken(NamedContext newContext, Config newConfig, NamedContext currentContext, Config currentConfig) {
+        if (newContext == null) {
+            return false;
+        }
+        if (currentContext == null) {
+            return true;
+        }
+        String newToken = KubeConfigUtils.getUserToken(newConfig, newContext.getContext());
+        if (newToken == null) {
+            // logout, do not refresh, LogoutAction already refreshes
+            return false;
+        }
+        String currentToken = KubeConfigUtils.getUserToken(currentConfig, currentContext.getContext());
+        return !StringUtils.equals(newToken, currentToken);
+    }
+}