Add rover dev restarts for add/delete subgraphs

apollographql/rover#1885

src/commands/local-supergraph-designs.ts

@@ -362,7 +362,7 @@ export async function addSubgraph(item?: SubgraphSummaryTreeItem) {
   } else {
     const wbFile = FileProvider.instance.workbenchFileFromPath(wbFilePath);
     let schemaString =
-      'extend schema \n\t@link(url: "https://specs.apollo.dev/federation/v", import: ["@key"])\n\ntype Product @key(fields:"id") { \n\tid: ID!\n}';
+      'extend schema \n\t@link(url: "https://specs.apollo.dev/federation/v2.7", import: ["@key"])\n\ntype Product @key(fields:"id") { \n\tid: ID!\n}';
     if (Object.keys(wbFile.subgraphs).length == 0) {
       schemaString += '\ntype Query {\n\tproducts: [Product]\n}';
     }
@@ -399,7 +399,7 @@ export async function addSubgraph(item?: SubgraphSummaryTreeItem) {
     await FileProvider.instance.writeWorkbenchConfig(wbFilePath, wbFile);
   }
 }
-// }
+
 export async function deleteSubgraph(item?: SubgraphTreeItem) {
   const wbFilePath = item ? item.wbFilePath : await whichDesign();
   if (!wbFilePath) return;

src/workbench/file-system/fileProvider.ts

@@ -468,6 +468,8 @@ export class FileProvider {
 
     if (shouldRefresh)
       StateManager.instance.localSupergraphTreeDataProvider.refresh();
+
+    await Rover.instance.tryRestartRoverDev(path);
   }
 
   workbenchFileByGraphName(name: string) {

src/workbench/rover.ts

@@ -30,6 +30,7 @@ import { URI } from 'vscode-uri';
 
 export class Rover {
   private static _instance: Rover;
+  private wbFilePath: string = '';
   static get instance(): Rover {
     if (!this._instance) this._instance = new Rover();
 
@@ -442,6 +443,7 @@ export class Rover {
       this.stopRoverDev();
     }
 
+    this.wbFilePath = wbFilePath;
     const wbFile = FileProvider.instance.workbenchFileFromPath(wbFilePath);
     const subgraphNames = Object.keys(wbFile.subgraphs);
     const subgraphsToMock: { [name: string]: Subgraph } = {};
@@ -521,6 +523,19 @@ export class Rover {
     statusBar.hide();
   }
 
+  /**
+   * If rover dev is already running, it will be restarted with the same config
+   * If rover dev is not running, nothing will be changed.
+   * We need to do this for adding or removing subgraphs from a config file because rover dev doesn't currently watch for those changes.
+   * See https://github.com/apollographql/rover/issues/1885.
+   */
+  async tryRestartRoverDev(wbFilePath: string) {
+    if (this.wbFilePath == wbFilePath && this.primaryDevTerminal) {
+      this.stopRoverDev();
+      await this.startRoverDev(this.wbFilePath);
+    }
+  }
+
   static extractDefinedEntities(schema: string) {
     const entities: {
       [entity: string]: FieldWithType[];