feat(dev): "Show Global State" #2908

Problem:
Toolkit developers, and customers who are troubleshooting, need a way to
see the various global state that Toolkit depends on.

Solution:
Introduce `Show Global State` item in the "AWS (Developer)" menu.
Currently only shows env vars, but can be expanded later.

Author: justinmk3

.changes/next-release/Feature-66c53a81-650f-442b-ad0c-4ea71a3f1f3c.json

@@ -0,0 +1,4 @@
+{
+	"type": "Feature",
+	"description": "\"AWS (Developer)\" menu now includes a \"Show Global State\" item"
+}

package.json

@@ -1060,7 +1060,7 @@
                 },
                 {
                     "command": "aws.dev.openMenu",
-                    "when": "aws.isDevMode"
+                    "when": "aws.isDevMode || isCloud9"
                 }
             ],
             "editor/title": [

src/dev/activation.ts

@@ -21,10 +21,10 @@ interface MenuOption {
 }
 
 /**
- * Currently contains all known developer tools.
+ * Defines AWS Toolkit developer tools.
  *
  * Options are displayed as quick-pick items. The {@link MenuOption.executor} callback is ran
- * if the user selects an option. There is no support for name-spacing. Just add the relevant
+ * on selection. There is no support for name-spacing. Just add the relevant
  * feature/module as a description so it can be moved around easier.
  */
 const menuOptions: Record<string, MenuOption> = {
@@ -34,6 +34,22 @@ const menuOptions: Record<string, MenuOption> = {
         detail: 'Edit a key in global/secret storage as a JSON document',
         executor: openStorageFromInput,
     },
+    showGlobalState: {
+        label: 'Show Global State',
+        description: 'AWS Toolkit',
+        detail: 'Shows various state (including environment variables)',
+        executor: showGlobalState,
+    },
+}
+
+export class GlobalStateDocumentProvider implements vscode.TextDocumentContentProvider {
+    provideTextDocumentContent(uri: vscode.Uri): string {
+        let s = 'Environment variables known to AWS Toolkit:\n'
+        for (const [k, v] of Object.entries(process.env)) {
+            s += `${k}=${v}\n`
+        }
+        return s
+    }
 }
 
 /**
@@ -53,7 +69,8 @@ export function activate(ctx: ExtContext): void {
 
     ctx.extensionContext.subscriptions.push(
         devSettings.onDidChangeActiveSettings(updateMode),
-        vscode.commands.registerCommand('aws.dev.openMenu', () => openMenu(ctx, menuOptions))
+        vscode.commands.registerCommand('aws.dev.openMenu', () => openMenu(ctx, menuOptions)),
+        vscode.workspace.registerTextDocumentContentProvider('aws-dev2', new GlobalStateDocumentProvider())
     )
 
     updateMode()
@@ -228,4 +245,10 @@ async function openStorageFromInput() {
     }
 }
 
+async function showGlobalState() {
+    const uri = vscode.Uri.parse('aws-dev2:global-state')
+    const doc = await vscode.workspace.openTextDocument(uri)
+    await vscode.window.showTextDocument(doc, { preview: false })
+}
+
 export const openStorageCommand = Commands.from(ObjectEditor).declareOpenStorage('_aws.dev.openStorage')