feat(cli): add support for pulling custom templates from git repositories

Author: rohang9000

packages/@aws-cdk/user-input-gen/lib/yargs-types.ts

@@ -8,7 +8,7 @@ interface YargsCommand {
 export interface CliAction extends YargsCommand {
   options?: { [optionName: string]: CliOption };
   implies?: { [key: string]: string };
-  //check?: string;
+  // check?: string;
 }
 
 interface YargsArg {

packages/aws-cdk/lib/cli/cli-config.ts

@@ -405,7 +405,7 @@ export async function makeConfig(): Promise<CliConfig> {
           'from-git-url': { type: 'string', desc: 'Git repository URL to clone custom template from', requiresArg: true, conflicts: ['lib-version', 'from-path'] },
           'template-path': { type: 'string', desc: 'Path to a specific template within a multi-template repository', requiresArg: true },
         },
-        //implies: { 'template-path': 'from-path' },
+
       },
       'migrate': {
         description: 'Migrate existing AWS resources into a CDK app',

packages/aws-cdk/lib/cli/cli-type-registry.json

@@ -872,17 +872,24 @@
           "desc": "Path to a local custom template directory or multi-template repository",
           "requiresArg": true,
           "conflicts": [
-            "lib-version"
+            "lib-version",
+            "from-git-url"
+          ]
+        },
+        "from-git-url": {
+          "type": "string",
+          "desc": "Git repository URL to clone custom template from",
+          "requiresArg": true,
+          "conflicts": [
+            "lib-version",
+            "from-path"
           ]
         },
         "template-path": {
           "type": "string",
           "desc": "Path to a specific template within a multi-template repository",
           "requiresArg": true
         }
-      },
-      "implies": {
-        "template-path": "from-path"
       }
     },
     "migrate": {

packages/aws-cdk/lib/cli/cli.ts

@@ -517,7 +517,7 @@ export async function exec(args: string[], synthesizer?: Synthesizer): Promise<n
           return printAvailableTemplates(ioHelper, language);
         } else {
           // Gate custom template support with unstable flag
-          if (args['from-path'] && !configuration.settings.get(['unstable']).includes('init')) {
+          if ((args['from-path'] || args['from-git-url']) && !configuration.settings.get(['unstable']).includes('init')) {
             throw new ToolkitError('Unstable feature use: \'init\' with custom templates is unstable. It must be opted in via \'--unstable\', e.g. \'cdk init --from-path=./my-template --unstable=init\'');
           }
           return cliInit({
@@ -528,6 +528,7 @@ export async function exec(args: string[], synthesizer?: Synthesizer): Promise<n
             generateOnly: args.generateOnly,
             libVersion: args.libVersion,
             fromPath: args['from-path'],
+            fromGitUrl: args['from-git-url'],
             templatePath: args['template-path'],
           });
         }