[Feature] Notification Destination resource (#3820)

## Changes
Made a new Notification Destination resource


- [x] relevant change in `docs/` folder
- [x] covered with integration tests in `internal/acceptance`
- [x] relevant acceptance tests are passing
- [x] using Go SDK

---------

Co-authored-by: vuong-nguyen <44292934+nkvuong@users.noreply.github.com>

docs/resources/notification_destination.md

@@ -0,0 +1,99 @@
+---
+subcategory: "Workspace"
+---
+# databricks_notification_destination Resource
+
+This resource allows you to manage [Notification Destinations](https://docs.databricks.com/api/workspace/notificationdestinations). Notification destinations are used to send notifications for query alerts and jobs to destinations outside of Databricks. Only workspace admins can create, update, and delete notification destinations.
+
+## Example Usage
+
+`Email` notification destination:
+
+```hcl
+resource "databricks_notification_destination" "ndresource" {
+    display_name = "Notification Destination"
+    config {
+        email {
+            addresses = ["abc@gmail.com"]
+        }
+    }
+}
+```
+`Slack` notification destination:
+
+```hcl
+resource "databricks_notification_destination" "ndresource" {
+    display_name = "Notification Destination"
+    config {
+        slack {
+            url     = "https://hooks.slack.com/services/..."
+        }
+    }
+}
+```
+`PagerDuty` notification destination:
+
+```hcl
+resource "databricks_notification_destination" "ndresource" {
+    display_name = "Notification Destination"
+    config {
+        pagerduty {
+            integration_key = "xxxxxx"
+        }
+    }
+}
+```
+`Microsoft Teams` notification destination:
+
+```hcl
+resource "databricks_notification_destination" "ndresource" {
+    display_name = "Notification Destination"
+    config {
+        microsoft_teams {
+            url = "https://outlook.office.com/webhook/..."
+        }
+    }
+}
+```
+`Generic Webhook` notification destination:
+
+```hcl
+resource "databricks_notification_destination" "ndresource" {
+    display_name = "Notification Destination"
+    config {
+        generic_webhook {
+            url = "https://example.com/webhook"
+            username = "username" // Optional
+            password = "password" // Optional
+        }
+    }
+}
+```
+
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `display_name` - (Required) The display name of the Notification Destination.
+* `config` - (Required) The configuration of the Notification Destination. It must contain exactly one of the following blocks:
+  * `email` - The email configuration of the Notification Destination. It must contain the following:
+    * `addresses` - (Required) The list of email addresses to send notifications to.
+  * `slack` - The Slack configuration of the Notification Destination. It must contain the following:
+    * `url` - (Required) The Slack webhook URL.
+  * `pagerduty` - The PagerDuty configuration of the Notification Destination. It must contain the following:
+    * `integration_key` - (Required) The PagerDuty integration key.
+  * `microsoft_teams` - The Microsoft Teams configuration of the Notification Destination. It must contain the following:
+    * `url` - (Required) The Microsoft Teams webhook URL.
+  * `generic_webhook` - The Generic Webhook configuration of the Notification Destination. It must contain the following:
+    * `url` - (Required) The Generic Webhook URL.
+    * `username` - (Optional) The username for basic authentication.
+    * `password` - (Optional) The password for basic authentication.
+
+-> **NOTE** If the type of notification destination is changed, the existing notification destination will be deleted and a new notification destination will be created with the new type.
+
+## Attribute Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `id` - The unique ID of the Notification Destination.

internal/acceptance/notification_destination_test.go

@@ -0,0 +1,204 @@
+package acceptance
+
+import (
+	"context"
+	"testing"
+
+	"github.com/databricks/databricks-sdk-go/service/settings"
+	"github.com/databricks/terraform-provider-databricks/common"
+	"github.com/databricks/terraform-provider-databricks/qa"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func checkND(t *testing.T, display_name string, config_type settings.DestinationType) resource.TestCheckFunc {
+	return resourceCheck("databricks_notification_destination.this", func(ctx context.Context, client *common.DatabricksClient, id string) error {
+		w, err := client.WorkspaceClient()
+		if err != nil {
+			return err
+		}
+		ndResource, err := w.NotificationDestinations.Get(ctx, settings.GetNotificationDestinationRequest{
+			Id: id,
+		})
+		if err != nil {
+			return err
+		}
+		assert.Equal(t, config_type, ndResource.DestinationType)
+		assert.Equal(t, display_name, ndResource.DisplayName)
+		require.NoError(t, err)
+		return nil
+	})
+}
+
+func TestAccNDEmail(t *testing.T) {
+	display_name := "Email Notification Destination - " + qa.RandomName()
+	workspaceLevel(t, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				email {
+					addresses = ["` + qa.RandomEmail() + `"]
+				}
+			}
+		}
+		`,
+	}, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				email {
+					addresses = ["` + qa.RandomEmail() + `", "` + qa.RandomEmail() + `"]
+				}
+			}
+		}
+		`,
+		Check: checkND(t, display_name, settings.DestinationTypeEmail),
+	})
+}
+
+func TestAccNDSlack(t *testing.T) {
+	display_name := "Notification Destination - " + qa.RandomName()
+	workspaceLevel(t, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				slack {
+					url = "https://hooks.slack.com/services/{var.RANDOM}"
+				}
+			}
+		}
+		`,
+		Check: checkND(t, display_name, settings.DestinationTypeSlack),
+	}, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				slack {
+					url = "https://hooks.slack.com/services/{var.RANDOM}"
+				}
+			}
+		}
+		`,
+		Check: checkND(t, display_name, settings.DestinationTypeSlack),
+	})
+}
+
+func TestAccNDMicrosoftTeams(t *testing.T) {
+	display_name := "Notification Destination - " + qa.RandomName()
+	workspaceLevel(t, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				microsoft_teams {
+					url = "https://outlook.office.com/webhook/{var.RANDOM}"
+				}
+			}
+		}
+		`,
+	}, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				microsoft_teams {
+					url = "https://outlook.office.com/webhook/{var.RANDOM}"
+				}
+			}
+		}
+		`,
+		Check: checkND(t, display_name, settings.DestinationTypeMicrosoftTeams),
+	})
+}
+
+func TestAccNDPagerduty(t *testing.T) {
+	display_name := "Notification Destination - " + qa.RandomName()
+	workspaceLevel(t, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				pagerduty {
+					integration_key = "{var.RANDOM}"
+				}
+			}
+		}
+		`,
+	}, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				pagerduty {
+					integration_key = "{var.RANDOM}"
+				}
+			}
+		}
+		`,
+		Check: checkND(t, display_name, settings.DestinationTypePagerduty),
+	})
+}
+
+func TestAccNDGenericWebhook(t *testing.T) {
+	display_name := "Notification Destination - " + qa.RandomName()
+	workspaceLevel(t, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				generic_webhook {
+					url = "https://webhook.site/{var.RANDOM}"
+					password = "password"
+				}
+			}
+		}
+		`,
+	}, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				generic_webhook {
+					url = "https://webhook.site/{var.RANDOM}"
+					username = "username2"
+				}
+			}
+		}
+		`,
+		Check: checkND(t, display_name, settings.DestinationTypeWebhook),
+	})
+}
+
+func TestAccConfigTypeChange(t *testing.T) {
+	display_name := "Notification Destination - " + qa.RandomName()
+	workspaceLevel(t, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				slack {
+					url = "https://hooks.slack.com/services/{var.RANDOM}"
+				}
+			}
+		}
+		`,
+		Check: checkND(t, display_name, settings.DestinationTypeSlack),
+	}, step{
+		Template: `
+		resource "databricks_notification_destination" "this" {
+			display_name = "` + display_name + `"
+			config {
+				microsoft_teams {
+					url = "https://outlook.office.com/webhook/{var.RANDOM}"
+				}
+			}
+		}
+		`,
+		Check: checkND(t, display_name, settings.DestinationTypeMicrosoftTeams),
+	})
+}

provider/provider.go

@@ -173,6 +173,7 @@ func DatabricksProvider() *schema.Provider {
 			"databricks_mws_vpc_endpoint":                mws.ResourceMwsVpcEndpoint().ToResource(),
 			"databricks_mws_workspaces":                  mws.ResourceMwsWorkspaces().ToResource(),
 			"databricks_notebook":                        workspace.ResourceNotebook().ToResource(),
+			"databricks_notification_destination":        settings.ResourceNotificationDestination().ToResource(),
 			"databricks_obo_token":                       tokens.ResourceOboToken().ToResource(),
 			"databricks_online_table":                    catalog.ResourceOnlineTable().ToResource(),
 			"databricks_permission_assignment":           access.ResourcePermissionAssignment().ToResource(),