feat: Add custom_fields to vlan resource

docs/resources/ipam_vlan.md

@@ -18,12 +18,28 @@ resource "netbox_ipam_vlan" "vlan_test" {
     name = "tag1"
     slug = "tag1"
   }
+  
+  custom_fields = {
+    cf_boolean = "true"
+    cf_date = "2020-12-25"
+    cf_integer = "10"
+    cf_selection = "1"
+    cf_text = "Some text"
+    cf_url = "https://github.com"
+  }
 }
 ```
 
 ## Argument Reference
 
 The following arguments are supported:
+* ``custom_fields`` - (Optional) Custom Field Keys and Values for this object
+  * For boolean, use the string value "true" or "false"
+  * For data, use the string format "YYYY-MM-DD"
+  * For integer, use the value between double quote "10"
+  * For selection, use the level id
+  * For text, use the string value
+  * For URL, use the URL as string
 * ``description`` - (Optional) The description of this object.
 * ``vlan_group_id`` - (Optional) ID of the group where this object belongs to.
 * ``name`` - (Required) The name for this object.

examples/main.tf

@@ -65,6 +65,15 @@ resource "netbox_ipam_vlan" "vlan_test" {
     name = "tag2"
     slug = "tag2"
   }
+
+  custom_fields = {
+    cf_boolean = "true"
+    cf_date = "2020-12-25"
+    cf_integer = "10"
+    cf_selection = "1"
+    cf_text = "Some text"
+    cf_url = "https://github.com"
+  }
 }
 
 resource "netbox_ipam_prefix" "prefix_test" {

netbox/resource_netbox_ipam_vlan.go

@@ -20,6 +20,24 @@ func resourceNetboxIpamVlan() *schema.Resource {
 		Exists: resourceNetboxIpamVlanExists,
 
 		Schema: map[string]*schema.Schema{
+			"custom_fields": {
+				Type:     schema.TypeMap,
+				Optional: true,
+				Elem: &schema.Schema{
+					Type: schema.TypeString,
+				},
+				// terraform default behavior sees a difference between null and an empty string
+				// therefore we override the default, because null in terraform results in empty string in netbox
+				DiffSuppressFunc: func(k, old, new string, d *schema.ResourceData) bool {
+					// function is called for each member of map
+					// including additional call on the amount of entries
+					// we ignore the count, because the actual state always returns the amount of existing custom_fields and all are optional in terraform
+					if k == CustomFieldsRegex {
+						return true
+					}
+					return old == new
+				},
+			},
 			"description": {
 				Type:         schema.TypeString,
 				Optional:     true,
@@ -82,6 +100,8 @@ func resourceNetboxIpamVlanCreate(d *schema.ResourceData,
 	m interface{}) error {
 	client := m.(*netboxclient.NetBoxAPI)
 
+	resourceCustomFields := d.Get("custom_fields").(map[string]interface{})
+	customFields := convertCustomFieldsFromTerraformToAPICreate(resourceCustomFields)
 	description := d.Get("description").(string)
 	groupID := int64(d.Get("vlan_group_id").(int))
 	name := d.Get("name").(string)
@@ -93,11 +113,12 @@ func resourceNetboxIpamVlanCreate(d *schema.ResourceData,
 	vid := int64(d.Get("vlan_id").(int))
 
 	newResource := &models.WritableVLAN{
-		Description: description,
-		Name:        &name,
-		Status:      status,
-		Tags:        convertTagsToNestedTags(tags),
-		Vid:         &vid,
+		CustomFields: &customFields,
+		Description:  description,
+		Name:         &name,
+		Status:       status,
+		Tags:         convertTagsToNestedTags(tags),
+		Vid:          &vid,
 	}
 
 	if groupID != 0 {
@@ -140,6 +161,12 @@ func resourceNetboxIpamVlanRead(d *schema.ResourceData,
 
 	for _, resource := range resources.Payload.Results {
 		if strconv.FormatInt(resource.ID, 10) == d.Id() {
+			customFields := convertCustomFieldsFromAPIToTerraform(resource.CustomFields)
+
+			if err = d.Set("custom_fields", customFields); err != nil {
+				return err
+			}
+
 			var description string
 
 			if resource.Description == "" {
@@ -239,6 +266,12 @@ func resourceNetboxIpamVlanUpdate(d *schema.ResourceData,
 		params.Description = description
 	}
 
+	if d.HasChange("custom_fields") {
+		stateCustomFields, resourceCustomFields := d.GetChange("custom_fields")
+		customFields := convertCustomFieldsFromTerraformToAPIUpdate(stateCustomFields, resourceCustomFields)
+		params.CustomFields = &customFields
+	}
+
 	if d.HasChange("vlan_group_id") {
 		groupID := int64(d.Get("vlan_group_id").(int))
 		if groupID != 0 {