Add redshift_namespace data source

docs/data-sources/namespace.md

@@ -0,0 +1,28 @@
+---
+# generated by https://github.com/hashicorp/terraform-plugin-docs
+page_title: "redshift_namespace Data Source - terraform-provider-redshift"
+subcategory: ""
+description: |-
+  Gets the cluster namespace (unique ID) of the Amazon Redshift cluster.
+---
+
+# redshift_namespace (Data Source)
+
+Gets the cluster namespace (unique ID) of the Amazon Redshift cluster.
+
+## Example Usage
+
+```terraform
+data "redshift_namespace" "namespace" {
+  # no attributes required. Cluster namespace will be set as the id.
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Optional
+
+- **id** (String) The ID of this resource.
+
+

examples/data-sources/redshift_namespace/data-source.tf

@@ -0,0 +1,3 @@
+data "redshift_namespace" "namespace" {
+  # no attributes required. Cluster namespace will be set as the id.
+}

redshift/data_source_redshift_namespace.go

@@ -0,0 +1,22 @@
+package redshift
+
+import (
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+)
+
+func dataSourceRedshiftNamespace() *schema.Resource {
+	return &schema.Resource{
+		Description: `Gets the cluster namespace (unique ID) of the Amazon Redshift cluster.`,
+		Read:        RedshiftResourceFunc(dataSourceRedshiftNamespaceRead),
+		Schema:      map[string]*schema.Schema{},
+	}
+}
+
+func dataSourceRedshiftNamespaceRead(db *DBConnection, d *schema.ResourceData) error {
+	var namespace string
+	if err := db.QueryRow("SELECT CURRENT_NAMESPACE").Scan(&namespace); err != nil {
+		return err
+	}
+	d.SetId(namespace)
+	return nil
+}

redshift/data_source_redshift_namespace_test.go

@@ -0,0 +1,27 @@
+package redshift
+
+import (
+	"regexp"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+)
+
+func TestAccDataSourceRedshiftNamespace(t *testing.T) {
+	uuidRegex := regexp.MustCompile("^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$")
+	config := `
+data "redshift_namespace" "namespace" {
+
+}
+`
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: config,
+				Check:  resource.TestMatchResourceAttr("data.redshift_namespace.namespace", "id", uuidRegex),
+			},
+		},
+	})
+}

redshift/provider.go

@@ -123,10 +123,11 @@ func Provider() *schema.Provider {
 			"redshift_database":  redshiftDatabase(),
 		},
 		DataSourcesMap: map[string]*schema.Resource{
-			"redshift_user":     dataSourceRedshiftUser(),
-			"redshift_group":    dataSourceRedshiftGroup(),
-			"redshift_schema":   dataSourceRedshiftSchema(),
-			"redshift_database": dataSourceRedshiftDatabase(),
+			"redshift_user":      dataSourceRedshiftUser(),
+			"redshift_group":     dataSourceRedshiftGroup(),
+			"redshift_schema":    dataSourceRedshiftSchema(),
+			"redshift_database":  dataSourceRedshiftDatabase(),
+			"redshift_namespace": dataSourceRedshiftNamespace(),
 		},
 		ConfigureFunc: providerConfigure,
 	}