Added the opensearch with standby functionality

.changelog/33031.txt

@@ -0,0 +1,7 @@
+```release-note:enhancement
+resource/aws_opensearch_domain: Add `cluster_config.multi_az_with_standby_enabled` argument
+```
+
+```release-note:enhancement
+data-source/aws_opensearch_domain: Add `cluster_config.multi_az_with_standby_enabled` attribute
+```

internal/service/opensearch/domain.go

@@ -249,7 +249,7 @@ func ResourceDomain() *schema.Resource {
 						"dedicated_master_count": {
 							Type:             schema.TypeInt,
 							Optional:         true,
-							DiffSuppressFunc: isDedicatedMasterDisabled,
+							DiffSuppressFunc: suppressComputedDedicatedMaster,
 						},
 						"dedicated_master_enabled": {
 							Type:     schema.TypeBool,
@@ -259,7 +259,7 @@ func ResourceDomain() *schema.Resource {
 						"dedicated_master_type": {
 							Type:             schema.TypeString,
 							Optional:         true,
-							DiffSuppressFunc: isDedicatedMasterDisabled,
+							DiffSuppressFunc: suppressComputedDedicatedMaster,
 						},
 						"instance_count": {
 							Type:     schema.TypeInt,
@@ -271,6 +271,10 @@ func ResourceDomain() *schema.Resource {
 							Optional: true,
 							Default:  opensearchservice.OpenSearchPartitionInstanceTypeM3MediumSearch,
 						},
+						"multi_az_with_standby_enabled": {
+							Type:     schema.TypeBool,
+							Optional: true,
+						},
 						"warm_count": {
 							Type:         schema.TypeInt,
 							Optional:     true,
@@ -1145,7 +1149,7 @@ func getKibanaEndpoint(d *schema.ResourceData) string {
 	return d.Get("endpoint").(string) + "/_plugin/kibana/"
 }
 
-func isDedicatedMasterDisabled(k, old, new string, d *schema.ResourceData) bool {
+func suppressComputedDedicatedMaster(k, old, new string, d *schema.ResourceData) bool {
 	v, ok := d.GetOk("cluster_config")
 	if ok {
 		clusterConfig := v.([]interface{})[0].(map[string]interface{})
@@ -1188,6 +1192,10 @@ func flattenNodeToNodeEncryptionOptions(o *opensearchservice.NodeToNodeEncryptio
 func expandClusterConfig(m map[string]interface{}) *opensearchservice.ClusterConfig {
 	config := opensearchservice.ClusterConfig{}
 
+	if v, ok := m["cold_storage_options"]; ok {
+		config.ColdStorageOptions = expandColdStorageOptions(v.([]interface{}))
+	}
+
 	if v, ok := m["dedicated_master_enabled"]; ok {
 		isEnabled := v.(bool)
 		config.DedicatedMasterEnabled = aws.Bool(isEnabled)
@@ -1205,23 +1213,13 @@ func expandClusterConfig(m map[string]interface{}) *opensearchservice.ClusterCon
 	if v, ok := m["instance_count"]; ok {
 		config.InstanceCount = aws.Int64(int64(v.(int)))
 	}
+
 	if v, ok := m["instance_type"]; ok {
 		config.InstanceType = aws.String(v.(string))
 	}
 
-	if v, ok := m["zone_awareness_enabled"]; ok {
-		isEnabled := v.(bool)
-		config.ZoneAwarenessEnabled = aws.Bool(isEnabled)
-
-		if isEnabled {
-			if v, ok := m["zone_awareness_config"]; ok {
-				config.ZoneAwarenessConfig = expandZoneAwarenessConfig(v.([]interface{}))
-			}
-		}
-	}
-
-	if v, ok := m["cold_storage_options"]; ok {
-		config.ColdStorageOptions = expandColdStorageOptions(v.([]interface{}))
+	if v, ok := m["multi_az_with_standby_enabled"]; ok {
+		config.MultiAZWithStandbyEnabled = aws.Bool(v.(bool))
 	}
 
 	if v, ok := m["warm_enabled"]; ok {
@@ -1239,6 +1237,17 @@ func expandClusterConfig(m map[string]interface{}) *opensearchservice.ClusterCon
 		}
 	}
 
+	if v, ok := m["zone_awareness_enabled"]; ok {
+		isEnabled := v.(bool)
+		config.ZoneAwarenessEnabled = aws.Bool(isEnabled)
+
+		if isEnabled {
+			if v, ok := m["zone_awareness_config"]; ok {
+				config.ZoneAwarenessConfig = expandZoneAwarenessConfig(v.([]interface{}))
+			}
+		}
+	}
+
 	return &config
 }
 
@@ -1298,6 +1307,9 @@ func flattenClusterConfig(c *opensearchservice.ClusterConfig) []map[string]inter
 	if c.InstanceType != nil {
 		m["instance_type"] = aws.StringValue(c.InstanceType)
 	}
+	if c.MultiAZWithStandbyEnabled != nil {
+		m["multi_az_with_standby_enabled"] = aws.BoolValue(c.MultiAZWithStandbyEnabled)
+	}
 	if c.WarmEnabled != nil {
 		m["warm_enabled"] = aws.BoolValue(c.WarmEnabled)
 	}

internal/service/opensearch/domain_data_source.go

@@ -141,6 +141,10 @@ func DataSourceDomain() *schema.Resource {
 							Type:     schema.TypeString,
 							Computed: true,
 						},
+						"multi_az_with_standby_enabled": {
+							Type:     schema.TypeBool,
+							Computed: true,
+						},
 						"warm_count": {
 							Type:     schema.TypeInt,
 							Computed: true,

internal/service/opensearch/domain_test.go

@@ -502,6 +502,42 @@ func TestAccOpenSearchDomain_Cluster_update(t *testing.T) {
 		}})
 }
 
+func TestAccOpenSearchDomain_Cluster_multiAzWithStandbyEnabled(t *testing.T) {
+	ctx := acctest.Context(t)
+	var domain opensearchservice.DomainStatus
+	rName := testAccRandomDomainName()
+	resourceName := "aws_opensearch_domain.test"
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:                 func() { acctest.PreCheck(ctx, t) },
+		ErrorCheck:               acctest.ErrorCheck(t, opensearchservice.EndpointsID),
+		ProtoV5ProviderFactories: acctest.ProtoV5ProviderFactories,
+		CheckDestroy:             testAccCheckDomainDestroy(ctx),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccDomainConfig_multiAzWithStandbyEnabled(rName, true),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckDomainExists(ctx, resourceName, &domain),
+					resource.TestCheckResourceAttr(resourceName, "cluster_config.0.multi_az_with_standby_enabled", "true"),
+				),
+			},
+			{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateId:     rName,
+				ImportStateVerify: true,
+			},
+			{
+				Config: testAccDomainConfig_multiAzWithStandbyEnabled(rName, false),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckDomainExists(ctx, resourceName, &domain),
+					resource.TestCheckResourceAttr(resourceName, "cluster_config.0.multi_az_with_standby_enabled", "false"),
+				),
+			},
+		},
+	})
+}
+
 func TestAccOpenSearchDomain_duplicate(t *testing.T) {
 	ctx := acctest.Context(t)
 	if testing.Short() {
@@ -2358,6 +2394,45 @@ resource "aws_opensearch_domain" "test" {
 `, rName, enabled)
 }
 
+func testAccDomainConfig_multiAzWithStandbyEnabled(rName string, enableStandby bool) string {
+	return fmt.Sprintf(`
+resource "aws_opensearch_domain" "test" {
+  domain_name    = %[1]q
+  engine_version = "OpenSearch_2.7"
+
+  domain_endpoint_options {
+    enforce_https       = true
+    tls_security_policy = "Policy-Min-TLS-1-0-2019-07"
+  }
+
+  ebs_options {
+    ebs_enabled = true
+    volume_size = 20
+  }
+
+  auto_tune_options {
+    desired_state       = "ENABLED"
+    rollback_on_disable = "NO_ROLLBACK"
+  }
+
+  cluster_config {
+    zone_awareness_enabled   = true
+    instance_count           = 3
+    instance_type            = "m6g.large.search"
+    dedicated_master_enabled = true
+    dedicated_master_count   = 3
+    dedicated_master_type    = "m6g.large.search"
+
+    zone_awareness_config {
+      availability_zone_count = 3
+    }
+
+    multi_az_with_standby_enabled = %[2]t
+  }
+}
+`, rName, enableStandby)
+}
+
 func testAccDomainConfig_clusterUpdate(rName string, instanceInt, snapshotInt int) string {
 	return fmt.Sprintf(`
 resource "aws_opensearch_domain" "test" {