Added import support for API Gateway Deployment

internal/service/apigateway/deployment.go

@@ -1,8 +1,10 @@
 package apigateway
 
 import (
+	"context"
 	"fmt"
 	"log"
+	"strings"
 	"time"
 
 	"github.com/aws/aws-sdk-go/aws"
@@ -22,6 +24,10 @@ func ResourceDeployment() *schema.Resource {
 		Update: resourceDeploymentUpdate,
 		Delete: resourceDeploymentDelete,
 
+		Importer: &schema.ResourceImporter{
+			StateContext: resourceDeploymentImport,
+		},
+
 		Schema: map[string]*schema.Schema{
 			"rest_api_id": {
 				Type:     schema.TypeString,
@@ -221,3 +227,18 @@ func resourceDeploymentDelete(d *schema.ResourceData, meta interface{}) error {
 
 	return nil
 }
+
+func resourceDeploymentImport(_ context.Context, d *schema.ResourceData, meta interface{}) ([]*schema.ResourceData, error) {
+	idParts := strings.Split(d.Id(), "/")
+	if len(idParts) != 2 {
+		return nil, fmt.Errorf("Unexpected format of ID (%s), use: 'REST-API-ID/DEPLOYMENT-ID'", d.Id())
+	}
+
+	restApiID := idParts[0]
+	deploymentID := idParts[1]
+
+	d.SetId(deploymentID)
+	d.Set("rest_api_id", restApiID)
+
+	return []*schema.ResourceData{d}, nil
+}

website/docs/r/api_gateway_deployment.html.markdown

@@ -148,3 +148,15 @@ In addition to all arguments above, the following attributes are exported:
   when allowing API Gateway to invoke a Lambda function,
   e.g., `arn:aws:execute-api:eu-west-2:123456789012:z4675bid1j/prod`
 * `created_date` - Creation date of the deployment
+
+## Import
+
+`aws_api_gateway_deployment` can be imported using `REST-API-ID/DEPLOYMENT-ID`, e.g.,
+
+```
+$ terraform import aws_api_gateway_deployment.example aabbccddee/1122334
+```
+
+The `stage_name` and `stage_description` arguments cannot be imported. Use the [`aws_api_gateway_stage` resource](api_gateway_stage.html) to import and manage stages.
+
+The `triggers` argument cannot be imported.