From a32ee4dc1af329cecfd6590f728811a9c6960bbe Mon Sep 17 00:00:00 2001
From: Peter Woodworth <44349620+peterwoodworth@users.noreply.github.com>
Date: Mon, 28 Mar 2022 18:30:08 -0700
Subject: [PATCH] fix(docdb): DB Instance ARN uses 'docdb' as the service
 component instead of 'rds' (#19555)

Fixes #19554

----

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### Adding new Unconventional Dependencies:

* [ ] This PR adds new unconventional dependencies following the process described [here](https://github.com/aws/aws-cdk/blob/master/CONTRIBUTING.md/#adding-new-unconventional-dependencies)

### New Features

* [ ] Have you added the new feature to an [integration test](https://github.com/aws/aws-cdk/blob/master/INTEGRATION_TESTS.md)?
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*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*
---
 packages/@aws-cdk/aws-docdb/lib/instance.ts       | 2 +-
 packages/@aws-cdk/aws-docdb/test/instance.test.ts | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/@aws-cdk/aws-docdb/lib/instance.ts b/packages/@aws-cdk/aws-docdb/lib/instance.ts
index 1a791b99a0bf5..9611235077389 100644
--- a/packages/@aws-cdk/aws-docdb/lib/instance.ts
+++ b/packages/@aws-cdk/aws-docdb/lib/instance.ts
@@ -101,7 +101,7 @@ abstract class DatabaseInstanceBase extends cdk.Resource implements IDatabaseIns
    */
   public get instanceArn(): string {
     return cdk.Stack.of(this).formatArn({
-      service: 'docdb',
+      service: 'rds',
       resource: 'db',
       arnFormat: ArnFormat.COLON_RESOURCE_NAME,
       resourceName: this.instanceIdentifier,
diff --git a/packages/@aws-cdk/aws-docdb/test/instance.test.ts b/packages/@aws-cdk/aws-docdb/test/instance.test.ts
index d7e90af3e3e90..a83525110f8f8 100644
--- a/packages/@aws-cdk/aws-docdb/test/instance.test.ts
+++ b/packages/@aws-cdk/aws-docdb/test/instance.test.ts
@@ -117,7 +117,7 @@ describe('DatabaseInstance', () => {
           [
             'arn:',
             { Ref: 'AWS::Partition' },
-            ':docdb:us-test-1:12345:db:',
+            ':rds:us-test-1:12345:db:',
             { Ref: 'InstanceC1063A87' },
           ],
         ],
@@ -160,7 +160,7 @@ describe('DatabaseInstance', () => {
           [
             'arn:',
             { Ref: 'AWS::Partition' },
-            `:docdb:us-test-1:12345:db:${instanceIdentifier}`,
+            `:rds:us-test-1:12345:db:${instanceIdentifier}`,
           ],
         ],
       },