Kubeconfigs as file references (#466)

Signed-off-by: Jussi Nummelin <jussi.nummelin@gmail.com>
Co-authored-by: Lauri Nevala <lauri.nevala@gmail.com>
Co-authored-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

src/migrations/cluster-store/3.6.0-beta.1.ts

@@ -0,0 +1,39 @@
+// move embedded kubeconfig into separate file and add reference to it to cluster settings
+import { app } from "electron"
+import  { ensureDirSync } from "fs-extra"
+import * as path from "path"
+import { KubeConfig } from "@kubernetes/client-node";
+import { writeEmbeddedKubeConfig } from "../../common/utils/kubeconfig"
+
+export function migration(store: any) {
+  console.log("CLUSTER STORE, MIGRATION: 3.6.0-beta.1");
+  const clusters: any[] = []
+
+  const kubeConfigBase = path.join(app.getPath("userData"), "kubeconfigs")
+  ensureDirSync(kubeConfigBase)
+  const storedClusters = store.get("clusters") as any[]
+  if (!storedClusters) return
+
+  console.log("num clusters to migrate: ", storedClusters.length)
+  for (const cluster of storedClusters ) {
+    try {
+      // take the embedded kubeconfig and dump it into a file
+      const kubeConfigFile = writeEmbeddedKubeConfig(cluster.id, cluster.kubeConfig)
+      cluster.kubeConfigPath = kubeConfigFile
+
+      const kc = new KubeConfig()
+      kc.loadFromFile(cluster.kubeConfigPath)
+      cluster.contextName = kc.getCurrentContext()
+
+      delete cluster.kubeConfig
+      clusters.push(cluster)
+    } catch(error) {
+      console.error("failed to migrate kubeconfig for cluster:", cluster.id)
+    }
+  }
+
+  // "overwrite" the cluster configs
+  if (clusters.length > 0) {
+    store.set("clusters", clusters)
+  }
+}