Add import for index mappings

provider/resource_opensearch_index.go

@@ -11,6 +11,7 @@ import (
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/validation"
 
+	"github.com/olivere/elastic/uritemplates"
 	elastic7 "github.com/olivere/elastic/v7"
 )
 
@@ -787,5 +788,46 @@ func resourceOpensearchIndexRead(d *schema.ResourceData, meta interface{}) error
 
 	indexResourceDataFromSettings(settings, d)
 
+	var response *json.RawMessage
+	var res *elastic7.Response
+	var mappingsResponse map[string]interface{}
+	path, err := uritemplates.Expand("/{index}/_mapping", map[string]string{
+		"index": index,
+	})
+	if err != nil {
+		return err
+	}
+	res, err = osClient.PerformRequest(context.TODO(), elastic7.PerformRequestOptions{
+		Method: "GET",
+		Path:   path,
+	})
+	if err != nil {
+		return err
+	}
+	response = &res.Body
+
+	err = json.Unmarshal(*response, &mappingsResponse)
+
+	if err != nil {
+		return fmt.Errorf("fail to unmarshal: %v", err)
+	}
+
+	lenMappings := len(mappingsResponse[index].(map[string]interface{})["mappings"].(map[string]interface{}))
+
+	if lenMappings == 0 {
+		return nil
+	}
+
+	jsonString, err := json.Marshal(mappingsResponse[index].(map[string]interface{})["mappings"])
+	if err != nil {
+		return fmt.Errorf("fail to marshal: %v", err)
+	}
+
+	err = d.Set("mappings", string(jsonString))
+
+	if err != nil {
+		return err
+	}
+
 	return nil
 }

provider/resource_opensearch_index_test.go

@@ -20,6 +20,24 @@ resource "opensearch_index" "test" {
   number_of_replicas = 1
 }
 `
+
+	testOpensearchIndexImport = `
+resource "opensearch_index" "test1import" {
+  name               = "terraform-test1import"
+  number_of_shards   = 1
+  number_of_replicas = 1
+  mappings = jsonencode(
+    {
+      "properties" : {
+        "name" : {
+          "type" : "text"
+        }
+      }
+    }
+  )
+}
+`
+
 	testAccOpensearchIndexUpdate1 = `
 resource "opensearch_index" "test" {
   name                                  = "terraform-test"
@@ -121,15 +139,15 @@ EOF
 resource "opensearch_index" "test_doctype" {
   name               = "terraform-test"
   number_of_replicas = "1"
-  mappings           = <<EOF
-	  {
-		"properties": {
-		  "name": {
-			"type": "text"
-		  }
-		}
-	  }
-	  EOF
+  mappings = jsonencode(
+    {
+      "properties" : {
+        "name" : {
+          "type" : "text"
+        }
+      }
+    }
+  )
 }
 `
 	testAccOpensearchIndexUpdateForceDestroy = `
@@ -436,10 +454,10 @@ func TestAccOpensearchIndex_importBasic(t *testing.T) {
 		CheckDestroy: checkOpensearchIndexDestroy,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccOpensearchIndex,
+				Config: testOpensearchIndexImport,
 			},
 			{
-				ResourceName:      "opensearch_index.test",
+				ResourceName:      "opensearch_index.test1import",
 				ImportState:       true,
 				ImportStateVerify: true,
 				ImportStateVerifyIgnore: []string{