d/aws_cloudwatch_event_bus

.changelog/23792.txt

@@ -0,0 +1,3 @@
+```release-note:new-data-source
+aws_cloudwatch_event_bus
+```

internal/provider/provider.go

@@ -460,6 +460,7 @@ func Provider() *schema.Provider {
 
 			"aws_cloudtrail_service_account": cloudtrail.DataSourceServiceAccount(),
 
+			"aws_cloudwatch_event_bus":        events.DataSourceBus(),
 			"aws_cloudwatch_event_connection": events.DataSourceConnection(),
 			"aws_cloudwatch_event_source":     events.DataSourceSource(),
 

internal/service/events/bus_data_source.go

@@ -0,0 +1,49 @@
+package events
+
+import (
+	"fmt"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/eventbridge"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"github.com/hashicorp/terraform-provider-aws/internal/conns"
+)
+
+func DataSourceBus() *schema.Resource {
+	return &schema.Resource{
+		Read: dataSourceBusRead,
+
+		Schema: map[string]*schema.Schema{
+			"arn": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+			"name": {
+				Type:     schema.TypeString,
+				Required: true,
+			},
+		},
+	}
+}
+
+func dataSourceBusRead(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*conns.AWSClient).EventsConn
+
+	name := d.Get("name").(string)
+
+	input := &eventbridge.DescribeEventBusInput{
+		Name: aws.String(name),
+	}
+
+	output, err := conn.DescribeEventBus(input)
+	if err != nil {
+		return fmt.Errorf("error reading EventBridge Bus (%s): %w", name, err)
+	}
+
+	d.Set("arn", output.Arn)
+	d.Set("name", output.Name)
+
+	d.SetId(name)
+
+	return nil
+}

internal/service/events/bus_data_source_test.go

@@ -0,0 +1,44 @@
+package events_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/aws/aws-sdk-go/service/eventbridge"
+	sdkacctest "github.com/hashicorp/terraform-plugin-sdk/v2/helper/acctest"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+	"github.com/hashicorp/terraform-provider-aws/internal/acctest"
+)
+
+func TestAccEventsBusDataSource_basic(t *testing.T) {
+	busName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
+	dataSourceName := "data.aws_cloudwatch_event_bus.test"
+	resourceName := "aws_cloudwatch_event_bus.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:   func() { acctest.PreCheck(t) },
+		ErrorCheck: acctest.ErrorCheck(t, eventbridge.EndpointsID),
+		Providers:  acctest.Providers,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccEventsBusDataSourceConfig(busName),
+				Check: resource.ComposeAggregateTestCheckFunc(
+					resource.TestCheckResourceAttrPair(dataSourceName, "arn", resourceName, "arn"),
+					resource.TestCheckResourceAttrPair(dataSourceName, "name", resourceName, "name"),
+				),
+			},
+		},
+	})
+}
+
+func testAccEventsBusDataSourceConfig(busName string) string {
+	return fmt.Sprintf(`
+resource "aws_cloudwatch_event_bus" "test" {
+  name = %[1]q
+}
+
+data "aws_cloudwatch_event_bus" "test" {
+  name = aws_cloudwatch_event_bus.test.name
+}
+`, busName)
+}

website/docs/d/cloudwatch_event_bus.html.markdown

@@ -0,0 +1,29 @@
+---
+subcategory: "CloudWatch"
+layout: "aws"
+page_title: "AWS: aws_cloudwatch_event_bus"
+description: |-
+  Get information on an EventBridge (Cloudwatch) Event Bus.
+---
+
+# Data Source: aws_cloudwatch_event_bus
+
+This data source can be used to fetch information about a specific
+EventBridge event bus. Use this data source to compute the ARN of
+an event bus, given the name of the bus.
+
+## Example Usage
+
+```terraform
+data "aws_cloudwatch_event_bus" "example" {
+  name = "example-bus-name"
+}
+```
+
+## Argument Reference
+
+* `name` - (Required) The friendly EventBridge event bus name.
+
+## Attributes Reference
+
+* `arn` - The Amazon Resource Name (ARN) specifying the role.