Make DetectoryRegistry a Singleton and initialize in a function

src/main/cluster-detectors/detector-registry.ts

@@ -21,19 +21,17 @@
 
 import { observable } from "mobx";
 import type { ClusterMetadata } from "../../common/cluster-types";
+import { Singleton } from "../../common/utils";
 import type { Cluster } from "../cluster";
 import type { BaseClusterDetector, ClusterDetectionResult } from "./base-cluster-detector";
-import { ClusterIdDetector } from "./cluster-id-detector";
-import { DistributionDetector } from "./distribution-detector";
-import { LastSeenDetector } from "./last-seen-detector";
-import { NodesCountDetector } from "./nodes-count-detector";
-import { VersionDetector } from "./version-detector";
 
-export class DetectorRegistry {
+export class DetectorRegistry extends Singleton {
   registry = observable.array<typeof BaseClusterDetector>([], { deep: false });
 
-  add(detectorClass: typeof BaseClusterDetector) {
+  add(detectorClass: typeof BaseClusterDetector): this {
     this.registry.push(detectorClass);
+
+    return this;
   }
 
   async detectForCluster(cluster: Cluster): Promise<ClusterMetadata> {
@@ -63,10 +61,3 @@ export class DetectorRegistry {
     return metadata;
   }
 }
-
-export const detectorRegistry = new DetectorRegistry();
-detectorRegistry.add(ClusterIdDetector);
-detectorRegistry.add(LastSeenDetector);
-detectorRegistry.add(VersionDetector);
-detectorRegistry.add(DistributionDetector);
-detectorRegistry.add(NodesCountDetector);

src/main/cluster.ts

@@ -30,7 +30,7 @@ import { loadConfigFromFile, loadConfigFromFileSync, validateKubeConfig } from "
 import { apiResourceRecord, apiResources, KubeApiResource, KubeResource } from "../common/rbac";
 import logger from "./logger";
 import { VersionDetector } from "./cluster-detectors/version-detector";
-import { detectorRegistry } from "./cluster-detectors/detector-registry";
+import { DetectorRegistry } from "./cluster-detectors/detector-registry";
 import plimit from "p-limit";
 import { toJS } from "../common/utils";
 import { initialNodeShellImage, ClusterState, ClusterMetadataKey, ClusterRefreshOptions, ClusterStatus, ClusterMetricsResourceType, ClusterId, ClusterMetadata, ClusterModel, ClusterPreferences, ClusterPrometheusPreferences, UpdateClusterModel } from "../common/cluster-types";
@@ -404,7 +404,7 @@ export class Cluster implements ClusterModel, ClusterState {
   @action
   async refreshMetadata() {
     logger.info(`[CLUSTER]: refreshMetadata`, this.getMeta());
-    const metadata = await detectorRegistry.detectForCluster(this);
+    const metadata = await DetectorRegistry.getInstance().detectForCluster(this);
     const existingMetadata = this.metadata;
 
     this.metadata = Object.assign(existingMetadata, metadata);

src/main/index.ts

@@ -61,8 +61,6 @@ import { ExtensionsStore } from "../extensions/extensions-store";
 import { FilesystemProvisionerStore } from "./extension-filesystem";
 import { SentryInit } from "../common/sentry";
 
-// This has to be called before start using winton-based logger
-// For example, before any logger.log
 SentryInit();
 
 const workingDir = path.join(app.getPath("appData"), appName);
@@ -167,6 +165,8 @@ app.on("ready", async () => {
   ClusterManager.createInstance().init();
   KubeconfigSyncManager.createInstance();
 
+  initializers.initClusterMetadataDetectors();
+
   try {
     logger.info("🔌 Starting LensProxy");
     await lensProxy.listen();

src/main/initializers/cluster-metadata-detectors.ts

@@ -0,0 +1,36 @@
+/**
+ * Copyright (c) 2021 OpenLens Authors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+import { ClusterIdDetector } from "../cluster-detectors/cluster-id-detector";
+import { DetectorRegistry } from "../cluster-detectors/detector-registry";
+import { DistributionDetector } from "../cluster-detectors/distribution-detector";
+import { LastSeenDetector } from "../cluster-detectors/last-seen-detector";
+import { NodesCountDetector } from "../cluster-detectors/nodes-count-detector";
+import { VersionDetector } from "../cluster-detectors/version-detector";
+
+export function initClusterMetadataDetectors() {
+  DetectorRegistry.createInstance()
+    .add(ClusterIdDetector)
+    .add(LastSeenDetector)
+    .add(VersionDetector)
+    .add(DistributionDetector)
+    .add(NodesCountDetector);
+}

src/main/initializers/index.ts

@@ -22,3 +22,4 @@
 export * from "./registries";
 export * from "./metrics-providers";
 export * from "./ipc";
+export * from "./cluster-metadata-detectors";