From a25792cdb1acb33941160d04c91af0418ecc8644 Mon Sep 17 00:00:00 2001
From: Naumel <104374999+Naumel@users.noreply.github.com>
Date: Thu, 18 Aug 2022 18:42:26 +0200
Subject: [PATCH] Revert "feat(cli): cdk watch --concurrency (#21598)"

This reverts commit e48cf15d6fa0ab1072684337b6ff4ba31b8f9298.
---
 packages/aws-cdk/README.md                |  9 ---------
 packages/aws-cdk/lib/cdk-toolkit.ts       |  9 ---------
 packages/aws-cdk/lib/cli.ts               |  4 +---
 packages/aws-cdk/test/cdk-toolkit.test.ts | 12 ------------
 4 files changed, 1 insertion(+), 33 deletions(-)

diff --git a/packages/aws-cdk/README.md b/packages/aws-cdk/README.md
index d6e29a2e3e5dc..73260afd299d6 100644
--- a/packages/aws-cdk/README.md
+++ b/packages/aws-cdk/README.md
@@ -458,15 +458,6 @@ locally to your terminal. To disable this feature you can pass the `--no-logs` o
 $ cdk watch --no-logs
 ```
 
-You can increase the concurrency by which `watch` will deploy and hotswap
-your stacks by specifying `--concurrency N`. `--concurrency` for `watch`
-acts the same as `--concurrency` for `deploy`, in that it will deploy or
-hotswap your stacks while respecting inter-stack dependencies.
-
-```console
-$ cdk watch --concurrency 5
-```
-
 **Note**: This command is considered experimental, and might have breaking changes in the future.
 The same limitations apply to to `watch` deployments as do to `--hotswap` deployments. See the
 *Hotswap deployments for faster development* section for more information.
diff --git a/packages/aws-cdk/lib/cdk-toolkit.ts b/packages/aws-cdk/lib/cdk-toolkit.ts
index 93518b4bf6394..fe16041bd979f 100644
--- a/packages/aws-cdk/lib/cdk-toolkit.ts
+++ b/packages/aws-cdk/lib/cdk-toolkit.ts
@@ -737,7 +737,6 @@ export class CdkToolkit {
       cacheCloudAssembly: false,
       hotswap: hotswap,
       extraUserAgent: `cdk-watch/hotswap-${hotswap ? 'on' : 'off'}`,
-      concurrency: options.concurrency,
     };
 
     try {
@@ -901,14 +900,6 @@ interface WatchOptions extends Omit<CfnDeployOptions, 'execute'> {
    * @default - false
    */
   readonly traceLogs?: boolean;
-
-  /**
-   * Maximum number of simulatenous deployments (dependency permitting) to execute.
-   * The default is '1', which executes all deployments serially.
-   *
-   * @default 1
-   */
-  readonly concurrency?: number;
 }
 
 export interface DeployOptions extends CfnDeployOptions, WatchOptions {
diff --git a/packages/aws-cdk/lib/cli.ts b/packages/aws-cdk/lib/cli.ts
index 0de38a1a9b5e0..fcb3412a2717f 100644
--- a/packages/aws-cdk/lib/cli.ts
+++ b/packages/aws-cdk/lib/cli.ts
@@ -216,8 +216,7 @@ async function parseCommandLineArguments() {
         default: true,
         desc: 'Show CloudWatch log events from all resources in the selected Stacks in the terminal. ' +
           "'true' by default, use --no-logs to turn off",
-      })
-      .option('concurrency', { type: 'number', desc: 'Maximum number of simulatenous deployments (dependency permitting) to execute.', default: 1, requiresArg: true }),
+      }),
     )
     .command('destroy [STACKS..]', 'Destroy the stack(s) named STACKS', (yargs: Argv) => yargs
       .option('all', { type: 'boolean', default: false, desc: 'Destroy all available stacks' })
@@ -517,7 +516,6 @@ async function initCommandLine() {
           rollback: configuration.settings.get(['rollback']),
           hotswap: args.hotswap,
           traceLogs: args.logs,
-          concurrency: args.concurrency,
         });
 
       case 'destroy':
diff --git a/packages/aws-cdk/test/cdk-toolkit.test.ts b/packages/aws-cdk/test/cdk-toolkit.test.ts
index b0359fbb6dbc7..341775b08b38a 100644
--- a/packages/aws-cdk/test/cdk-toolkit.test.ts
+++ b/packages/aws-cdk/test/cdk-toolkit.test.ts
@@ -657,18 +657,6 @@ describe('watch', () => {
     expect(excludeArgs[1]).toBe('**/my-dir2');
   });
 
-  test('allows watching with deploy concurrency', async () => {
-    cloudExecutable.configuration.settings.set(['watch'], {});
-    const toolkit = defaultToolkitSetup();
-    const cdkDeployMock = jest.fn();
-    toolkit.deploy = cdkDeployMock;
-
-    await toolkit.watch({ selector: { patterns: [] }, concurrency: 3 });
-    fakeChokidarWatcherOn.readyCallback();
-
-    expect(cdkDeployMock).toBeCalledWith(expect.objectContaining({ concurrency: 3 }));
-  });
-
   describe('with file change events', () => {
     let toolkit: CdkToolkit;
     let cdkDeployMock: jest.Mock;