perf(vscode): cache getRobotCodeProfiles results

Add caching for robot.toml profiles to avoid spawning a new process on every call. Cache is invalidated on language client state changes.

Author: d-biehl

vscode-client/extension/testcontrollermanager.ts

@@ -157,6 +157,7 @@ export class TestControllerManager {
  private diagnosticCollection = vscode.languages.createDiagnosticCollection("robotCode discovery");
  private activeStepDecorationType: vscode.TextEditorDecorationType;
  showEditorRunDecorations = false;
+ private readonly profilesCache = new WeakMap<vscode.WorkspaceFolder, RobotCodeProfilesResult>();
 
  constructor(
  public readonly extensionContext: vscode.ExtensionContext,
@@ -208,13 +209,16 @@ export class TestControllerManager {
  fileWatcher,
  this.activeStepDecorationType,
  this.languageClientsManager.onClientStateChanged(async (event) => {
+ const folder = vscode.workspace.getWorkspaceFolder(event.uri);
+ if (folder) {
+ this.invalidateProfilesCache(folder);
+ }
  switch (event.state) {
  case ClientState.Running: {
  await this.refresh();
  break;
  }
  case ClientState.Stopped: {
- const folder = vscode.workspace.getWorkspaceFolder(event.uri);
  if (folder) this.removeWorkspaceFolderItems(folder);
 
  break;
@@ -446,6 +450,16 @@ export class TestControllerManager {
  });
  }
 
+ public invalidateProfilesCache(folder?: vscode.WorkspaceFolder): void {
+ if (folder) {
+ this.profilesCache.delete(folder);
+ } else {
+ for (const ws of vscode.workspace.workspaceFolders ?? []) {
+ this.profilesCache.delete(ws);
+ }
+ }
+ }
+
  public async getRobotCodeProfiles(
  folder: vscode.WorkspaceFolder,
  profiles?: string[],
@@ -456,17 +470,30 @@ export class TestControllerManager {
  messages: [],
  } as RobotCodeProfilesResult;
  }
+
+ // Use cache only when no specific profiles are requested
+ if (profiles === undefined && this.profilesCache.has(folder)) {
+ return this.profilesCache.get(folder)!;
+ }
+
  const config = vscode.workspace.getConfiguration(CONFIG_SECTION, folder);
  const paths = config.get<string[] | undefined>("robot.paths", undefined);
 
- return (await this.languageClientsManager.pythonManager.executeRobotCode(
+ const result = (await this.languageClientsManager.pythonManager.executeRobotCode(
  folder,
  [...(paths?.length ? paths.flatMap((v) => ["-dp", v]) : ["-dp", "."]), "profiles", "list"],
  profiles,
  "json",
  true,
  true,
  )) as RobotCodeProfilesResult;
+
+ // Cache the result only when no specific profiles were requested
+ if (profiles === undefined) {
+ this.profilesCache.set(folder, result);
+ }
+
+ return result;
  }
 
  public async selectConfigurationProfiles(folder?: vscode.WorkspaceFolder): Promise<void> {