feat: Add description arg/attr for aws_cloudwatch_event_bus resource and data source

.changelog/39980.txt

@@ -0,0 +1,6 @@
+```release-note:enhancement
+resource/aws_cloudwatch_event_bus: Add `description` argument
+```
+```release-note:enhancement
+data-source/aws_cloudwatch_event_bus: Add `description` attribute
+```

internal/service/events/bus.go

@@ -41,6 +41,11 @@ func resourceBus() *schema.Resource {
 				Type:     schema.TypeString,
 				Computed: true,
 			},
+			names.AttrDescription: {
+				Type:         schema.TypeString,
+				Optional:     true,
+				ValidateFunc: validation.StringLenBetween(0, 512),
+			},
 			"event_source_name": {
 				Type:         schema.TypeString,
 				Optional:     true,
@@ -76,6 +81,10 @@ func resourceBusCreate(ctx context.Context, d *schema.ResourceData, meta interfa
 		Tags: getTagsIn(ctx),
 	}
 
+	if v, ok := d.GetOk(names.AttrDescription); ok {
+		input.Description = aws.String(v.(string))
+	}
+
 	if v, ok := d.GetOk("event_source_name"); ok {
 		input.EventSourceName = aws.String(v.(string))
 	}
@@ -133,6 +142,7 @@ func resourceBusRead(ctx context.Context, d *schema.ResourceData, meta interface
 	}
 
 	d.Set(names.AttrARN, output.Arn)
+	d.Set(names.AttrDescription, output.Description)
 	d.Set("kms_key_identifier", output.KmsKeyIdentifier)
 	d.Set(names.AttrName, output.Name)
 
@@ -143,11 +153,18 @@ func resourceBusUpdate(ctx context.Context, d *schema.ResourceData, meta interfa
 	var diags diag.Diagnostics
 	conn := meta.(*conns.AWSClient).EventsClient(ctx)
 
-	if d.HasChange("kms_key_identifier") {
+	if d.HasChanges(names.AttrDescription, "kms_key_identifier") {
 		input := &eventbridge.UpdateEventBusInput{
 			Name: aws.String(d.Get(names.AttrName).(string)),
 		}
 
+		// To unset the description, the only way is to explicitly set it to the empty string
+		if v, ok := d.GetOk(names.AttrDescription); ok {
+			input.Description = aws.String(v.(string))
+		} else {
+			input.Description = aws.String("")
+		}
+
 		if v, ok := d.GetOk("kms_key_identifier"); ok {
 			input.KmsKeyIdentifier = aws.String(v.(string))
 		}

internal/service/events/bus_data_source.go

@@ -23,6 +23,10 @@ func dataSourceBus() *schema.Resource {
 				Type:     schema.TypeString,
 				Computed: true,
 			},
+			names.AttrDescription: {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
 			"kms_key_identifier": {
 				Type:     schema.TypeString,
 				Computed: true,
@@ -48,6 +52,7 @@ func dataSourceBusRead(ctx context.Context, d *schema.ResourceData, meta interfa
 
 	d.SetId(eventBusName)
 	d.Set(names.AttrARN, output.Arn)
+	d.Set(names.AttrDescription, output.Description)
 	d.Set("kms_key_identifier", output.KmsKeyIdentifier)
 	d.Set(names.AttrName, output.Name)
 

internal/service/events/bus_data_source_test.go

@@ -49,6 +49,7 @@ func TestAccEventsBusDataSource_kmsKeyIdentifier(t *testing.T) {
 			{
 				Config: testAccBusDataSourceConfig_kmsKeyIdentifier(busName),
 				Check: resource.ComposeAggregateTestCheckFunc(
+					resource.TestCheckResourceAttrPair(dataSourceName, names.AttrDescription, resourceName, names.AttrDescription),
 					resource.TestCheckResourceAttrPair(dataSourceName, "kms_key_identifier", resourceName, "kms_key_identifier"),
 				),
 			},
@@ -124,6 +125,7 @@ resource "aws_kms_key_policy" "test" {
 
 resource "aws_cloudwatch_event_bus" "test" {
   name               = %[1]q
+  description        = "Test event bus"
   kms_key_identifier = aws_kms_key.test.arn
 }
 

internal/service/events/bus_test.go

@@ -24,10 +24,11 @@ import (
 
 func TestAccEventsBus_basic(t *testing.T) {
 	ctx := acctest.Context(t)
-	var v1, v2, v3 eventbridge.DescribeEventBusOutput
+	var v1, v2, v3, v4, v5 eventbridge.DescribeEventBusOutput
 	busName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
 	busNameModified := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
 	resourceName := "aws_cloudwatch_event_bus.test"
+	description := "Test event bus"
 
 	resource.ParallelTest(t, resource.TestCase{
 		PreCheck:                 func() { acctest.PreCheck(ctx, t) },
@@ -40,6 +41,7 @@ func TestAccEventsBus_basic(t *testing.T) {
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckBusExists(ctx, resourceName, &v1),
 					acctest.CheckResourceAttrRegionalARN(resourceName, names.AttrARN, "events", fmt.Sprintf("event-bus/%s", busName)),
+					resource.TestCheckResourceAttr(resourceName, names.AttrDescription, ""),
 					resource.TestCheckNoResourceAttr(resourceName, "event_source_name"),
 					resource.TestCheckResourceAttr(resourceName, names.AttrName, busName),
 					resource.TestCheckResourceAttr(resourceName, acctest.CtTagsPercent, "0"),
@@ -51,11 +53,28 @@ func TestAccEventsBus_basic(t *testing.T) {
 				ImportStateVerify: true,
 			},
 			{
-				Config: testAccBusConfig_basic(busNameModified),
+				Config: testAccBusConfig_description(busName, description),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckBusExists(ctx, resourceName, &v2),
-					testAccCheckBusRecreated(&v1, &v2),
+					testAccCheckBusNotRecreated(&v1, &v2),
+					resource.TestCheckResourceAttr(resourceName, names.AttrDescription, description),
+				),
+			},
+			{
+				Config: testAccBusConfig_basic(busName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckBusExists(ctx, resourceName, &v3),
+					testAccCheckBusNotRecreated(&v2, &v3),
+					resource.TestCheckResourceAttr(resourceName, names.AttrDescription, ""),
+				),
+			},
+			{
+				Config: testAccBusConfig_basic(busNameModified),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckBusExists(ctx, resourceName, &v4),
+					testAccCheckBusRecreated(&v3, &v4),
 					acctest.CheckResourceAttrRegionalARN(resourceName, names.AttrARN, "events", fmt.Sprintf("event-bus/%s", busNameModified)),
+					resource.TestCheckResourceAttr(resourceName, names.AttrDescription, ""),
 					resource.TestCheckNoResourceAttr(resourceName, "event_source_name"),
 					resource.TestCheckResourceAttr(resourceName, names.AttrName, busNameModified),
 					resource.TestCheckResourceAttr(resourceName, acctest.CtTagsPercent, "0"),
@@ -64,8 +83,9 @@ func TestAccEventsBus_basic(t *testing.T) {
 			{
 				Config: testAccBusConfig_tags1(busNameModified, names.AttrKey, names.AttrValue),
 				Check: resource.ComposeTestCheckFunc(
-					testAccCheckBusExists(ctx, resourceName, &v3),
-					testAccCheckBusNotRecreated(&v2, &v3),
+					testAccCheckBusExists(ctx, resourceName, &v5),
+					testAccCheckBusNotRecreated(&v4, &v5),
+					resource.TestCheckResourceAttr(resourceName, names.AttrDescription, ""),
 					resource.TestCheckResourceAttr(resourceName, acctest.CtTagsPercent, "1"),
 					resource.TestCheckResourceAttr(resourceName, "tags.key", names.AttrValue),
 				),
@@ -302,6 +322,15 @@ resource "aws_cloudwatch_event_bus" "test" {
 `, name)
 }
 
+func testAccBusConfig_description(name, description string) string {
+	return fmt.Sprintf(`
+resource "aws_cloudwatch_event_bus" "test" {
+  name        = %[1]q
+  description = %[2]q
+}
+`, name, description)
+}
+
 func testAccBusConfig_tags1(name, key, value string) string {
 	return fmt.Sprintf(`
 resource "aws_cloudwatch_event_bus" "test" {

website/docs/d/cloudwatch_event_bus.html.markdown

@@ -22,11 +22,13 @@ data "aws_cloudwatch_event_bus" "example" {
 
 ## Argument Reference
 
-* `name` - (Required) Friendly EventBridge event bus name.
+* `name` - (Required) Name of the event bus.
 
 ## Attribute Reference
 
 This data source exports the following attributes in addition to the arguments above:
 
-* `arn` - ARN.
-* `kms_key_identifier` - The identifier of the AWS KMS customer managed key for EventBridge to use to encrypt events on this event bus, if one has been specified.
+* `arn` - ARN of the event bus.
+* `description` - Event bus description.
+* `id` - Name of the event bus.
+* `kms_key_identifier` - Identifier of the AWS KMS customer managed key for EventBridge to use to encrypt events on this event bus, if one has been specified.

website/docs/r/cloudwatch_event_bus.html.markdown

@@ -27,6 +27,7 @@ data "aws_cloudwatch_event_source" "examplepartner" {
 
 resource "aws_cloudwatch_event_bus" "examplepartner" {
   name              = data.aws_cloudwatch_event_source.examplepartner.name
+  description       = "Event bus for example partner events"
   event_source_name = data.aws_cloudwatch_event_source.examplepartner.name
 }
 ```
@@ -35,17 +36,24 @@ resource "aws_cloudwatch_event_bus" "examplepartner" {
 
 This resource supports the following arguments:
 
-* `name` - (Required) The name of the new event bus. The names of custom event buses can't contain the / character. To create a partner event bus, ensure the `name` matches the `event_source_name`.
-* `event_source_name` - (Optional) The partner event source that the new event bus will be matched with. Must match `name`.
-* `kms_key_identifier` - (Optional) The identifier of the AWS KMS customer managed key for EventBridge to use, if you choose to use a customer managed key to encrypt events on this event bus. The identifier can be the key Amazon Resource Name (ARN), KeyId, key alias, or key alias ARN.
-* `tags` - (Optional)  A map of tags to assign to the resource. If configured with a provider [`default_tags` configuration block](https://registry.terraform.io/providers/hashicorp/aws/latest/docs#default_tags-configuration-block) present, tags with matching keys will overwrite those defined at the provider-level.
+The following arguments are required:
+
+* `name` - (Required) Name of the new event bus. The names of custom event buses can't contain the / character. To create a partner event bus, ensure that the `name` matches the `event_source_name`.
+
+The following arguments are optional:
+
+* `description` - (Optional) Event bus description.
+* `event_source_name` - (Optional) Partner event source that the new event bus will be matched with. Must match `name`.
+* `kms_key_identifier` - (Optional) Identifier of the AWS KMS customer managed key for EventBridge to use, if you choose to use a customer managed key to encrypt events on this event bus. The identifier can be the key Amazon Resource Name (ARN), KeyId, key alias, or key alias ARN.
+* `tags` - (Optional) Map of tags assigned to the resource. If configured with a provider [`default_tags` configuration block](/docs/providers/aws/index.html#default_tags-configuration-block) present, tags with matching keys will overwrite those defined at the provider-level.
 
 ## Attribute Reference
 
 This resource exports the following attributes in addition to the arguments above:
 
-* `arn` - The Amazon Resource Name (ARN) of the event bus.
-* `tags_all` - A map of tags assigned to the resource, including those inherited from the provider [`default_tags` configuration block](https://registry.terraform.io/providers/hashicorp/aws/latest/docs#default_tags-configuration-block).
+* `arn` - ARN of the event bus.
+* `id` - Name of the event bus.
+* `tags_all` - Map of tags assigned to the resource, including those inherited from the provider [`default_tags` configuration block](https://registry.terraform.io/providers/hashicorp/aws/latest/docs#default_tags-configuration-block).
 
 ## Import
 
@@ -58,7 +66,7 @@ import {
 }
 ```
 
-Using `terraform import`, import EventBridge event buses using the `name` (which can also be a partner event source name). For example:
+Using `terraform import`, import EventBridge event buses using the name of the event bus (which can also be a partner event source name). For example:
 
 ```console
 % terraform import aws_cloudwatch_event_bus.messenger chat-messages