add --watch to create-changeset. Fixes #16

unbounce · Feb 27, 2018 · 8513bba · 8513bba
1 parent 771b9e3
commit 8513bba
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diff --git a/src/cfn/index.ts b/src/cfn/index.ts
@@ -1432,7 +1432,17 @@ export async function updateStackMain(argv: GenericCLIArguments): Promise<number
 
 
 export async function createChangesetMain(argv: GenericCLIArguments): Promise<number> {
-  return new CreateChangeSet(argv, await loadStackArgs(argv)).run();
+  const changesetRunner = new CreateChangeSet(argv, await loadStackArgs(argv));
+  const changesetExitCode = await changesetRunner.run();
+  if (argv.watch && changesetExitCode === 0) {
+    console.log();
+    await watchStack(changesetRunner.stackName, new Date(), DEFAULT_EVENT_POLL_INTERVAL, argv.watchInactivityTimeout);
+    console.log();
+    await summarizeCompletedStackOperation(changesetRunner.stackName);
+    return 0;
+  } else {
+    return changesetExitCode;
+  }
 };
 
 export async function listStacksMain(argv: GenericCLIArguments): Promise<number> {

diff --git a/src/cli.ts b/src/cli.ts
@@ -203,6 +203,14 @@ export function buildArgs(commands = lazy, wrapMainHandler = wrapCommandHandler)
     description('create a cfn changeset based on stack-args.yaml'),
     (args) => args
       .demandCommand(0, 0)
+      .option('watch', {
+        type: 'boolean', default: false,
+        description: 'Watch stack after creating changeset. This is useful when exec-changeset is called by others.'
+      })
+      .option('watch-inactivity-timeout', {
+        type: 'number', default: (60 * 3),
+        description: description('how long to wait for events when the stack is in a terminal state')
+      })
       .option('description', {
         type: 'string', default: undefined,
         description: description('optional description of changeset')