fix(cdk): `cdk diff --quiet` to print stack name when there is diffs #28576

sakurai-ryo · 2024-01-04T14:15:47Z

The --quiet flag on the cdk diff command will prevent the stack name and default message from being printed when there is no diff.
If diffs exist, the stack name and diffs are expected to be printed, but currently the stack name is not displayed and it is difficult to determine which stack the diff is for.

$ cdk diff --quiet
Resources
[~] AWS::S3::Bucket MyFirstBucket MyFirstBucketB8884501
 ├─ [~] DeletionPolicy
 │   ├─ [-] Delete
 │   └─ [+] Retain
 └─ [~] UpdateReplacePolicy
     ├─ [-] Delete
     └─ [+] Retain


✨  Number of stacks with differences: 1

This PR fixed to print the stack name when the --quiet flag is specified and diffs exist.

Closes #27128

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

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sakurai-ryo · 2024-01-04T14:25:28Z

packages/aws-cdk/test/diff.test.ts

@@ -187,15 +187,37 @@ describe('non-nested stacks', () => {

    // WHEN
    const exitCode = await toolkit.diff({
-      stackNames: ['A', 'A'],


This test was broken, so fixed this.
This test assumed that the diff does not exist, but the stackNames: ['A', 'A'] specification indicates that the diff does exist and the not.toContain assertion succeeded because of the presence or absence of ANSI escape sequences.
Therefore, I changed it to specify stackNames: ['D'], where no diff exists, and removed the ANSI escape sequence in the string used for the assertion.

aws-cdk/packages/aws-cdk/test/diff.test.ts

Line 41 in 10ed194

stackName: 'D',

aws-cdk/packages/aws-cdk/test/diff.test.ts

Line 57 in 10ed194

if (stackArtifact.stackName === 'D') {

good catch here!

sakurai-ryo · 2024-01-04T14:31:24Z

packages/aws-cdk/lib/diff.ts

@@ -23,9 +23,10 @@ export function printStackDiff(
  context: number,
  quiet: boolean,
  changeSet?: CloudFormation.DescribeChangeSetOutput,
-  stream?: cfnDiff.FormatStream): number {
+  stream?: cfnDiff.FormatStream,
+  stackDiff?: cfnDiff.TemplateDiff): number {


The cfnDiff.fullDiff function must be called in the CdkToolkit.diff method, since we need to get the presence or absence of diffs when determining whether to print the stack name.
I changed it so that the diff can be passed in optionally so that the relatively heavy processing of cfnDiff.fullDiff does not need to be executed multiple times.

sakurai-ryo · 2024-01-04T14:57:42Z

Exemption Request: I think the unit tests cover the test for this change.

nomike · 2024-01-24T14:15:02Z

Exemption Request: This pull request will not cause any change in the produced code, so it should be exempt from having to contain a change to the integration test file and the resulting snapshot.

Also. as it's a CLI code change, I request someone to review it please. It's a very minor change, so it will hopefully be quick to review.

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

…fix-diff-quiet-stack-name

…i-ryo/aws-cdk into fix-diff-quiet-stack-name

nomike · 2024-02-08T11:59:45Z

Can someone please approve the test-pipeline?

Thanks!

…fix-diff-quiet-stack-name

nomike · 2024-02-12T12:08:06Z

Looks like this branch needs re-basing again and then needs an approval for that test pipeline.
Could someone please kick this off?

nomike · 2024-02-21T13:21:53Z

Is there any way to push this forward?
One of my changes is blocked by this.

aws-cdk-automation · 2024-03-07T19:54:36Z

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aws-cdk-automation · 2024-03-21T16:50:37Z

➡️ PR build request submitted to test-main-pipeline ⬅️

A maintainer must now check the pipeline and add the pr-linter/cli-integ-tested label once the pipeline succeeds.

paulhcsun · 2024-03-21T16:55:59Z

Hi @sakurai-ryo, @nomike. I'm very sorry for not getting around to this. It looks like I added the cli-integ-tested label already so it definitely passed the cli integ tests at some point. There was some miscommunication on our side in handing over this PR to another team but I will reach out for someone to have one final look to get this over the line.

In the meantime there are a couple of merge conflicts to be addressed, I'd like to run the cli integ tests again after those have been resolved to be safe. I will keep a close eye on this PR until then.

Thank you both for you patience.

comcalvi · 2024-03-21T18:17:04Z

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

-          ? (numberFromBool(printSecurityDiff(currentTemplate, stack, RequireApproval.Broadening, changeSet)) > 0 ? 1 : 0)
-          : (printStackDiff(currentTemplate, stack, strict, contextLines, quiet, changeSet, stream) > 0 ? 1 : 0);
+          ? (numberFromBool(printSecurityDiff(currentTemplate, stack, RequireApproval.Broadening, changeSet, diff)) > 0 ? 1 : 0)
+          : (printStackDiff(currentTemplate, stack, strict, contextLines, quiet, changeSet, stream, diff) > 0 ? 1 : 0);


Let's not pass the diff in the same function that takes the inputs to create the diff (the old template and new template). Instead let's move the

stream.write(format('Stack %s\n', chalk.bold(stack.displayName)));

to printStackDiff (you can access the stackName from the stack object passed as the second argument to printStackDiff).

comcalvi · 2024-03-21T18:17:37Z

packages/aws-cdk/test/diff.test.ts

@@ -187,15 +187,37 @@ describe('non-nested stacks', () => {

    // WHEN
    const exitCode = await toolkit.diff({
-      stackNames: ['A', 'A'],


good catch here!

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aws-cdk-automation · 2024-03-22T00:08:46Z

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aws-cdk-automation · 2024-03-25T00:08:52Z

This PR cannot be merged because it has conflicts. Please resolve them. The PR will be considered stale and closed if it remains in an unmergeable state.

aws-cdk-automation · 2024-03-25T18:34:30Z

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aws-cdk-automation · 2024-04-08T00:08:36Z

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aws-cdk-automation · 2024-04-08T00:10:15Z

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TheCaffeintedSloth · 2024-04-25T15:10:48Z

This is still broken and should be fixed. The --quiet flag is broken without it.

fix: quiet flag to print stack name when having diffs

d9b6bc8

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sakurai-ryo changed the title ~~feat(cdk): cdk diff --quiet to print stack name when there is no diff~~ fix(cdk): cdk diff --quiet to print stack name when there is no diff Jan 4, 2024

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fix(cdk): Print names for changed stacks when using --quiet #28838

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Merge branch 'master' of https://github.com/sakurai-ryo/aws-cdk into …

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…fix-diff-quiet-stack-name

Merge branch 'fix-diff-quiet-stack-name' of https://github.com/sakura…

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fix(cdk): cdk diff --quiet to print stack name when there is diffs #30186

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fix(cdk): `cdk diff --quiet` to print stack name when there is diffs #28576

fix(cdk): `cdk diff --quiet` to print stack name when there is diffs #28576

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TheCaffeintedSloth commented Apr 25, 2024

fix(cdk): cdk diff --quiet to print stack name when there is diffs #28576

fix(cdk): cdk diff --quiet to print stack name when there is diffs #28576

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fix(cdk): `cdk diff --quiet` to print stack name when there is diffs #28576

fix(cdk): `cdk diff --quiet` to print stack name when there is diffs #28576

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