feat: add support for enable_dynamic_port_allocation and max_ports_pe…

…r_vm

README.md

@@ -11,7 +11,7 @@
 A [Terraform] module for [Google Cloud Platform (GCP)][gcp].
 
 **_This module supports Terraform version 1
-and is compatible with the Terraform Google Provider version 4._** and 5._**
+and is compatible with the Terraform Google Provider version 4._** (4.28 and later) and 5._**
 
 This module is part of our Infrastructure as Code (IaC) framework
 that enables our users and customers to easily deploy and manage reusable,
@@ -207,10 +207,23 @@ See [variables.tf] and [examples/] for details and use-cases.
 
     Self-links of NAT IPs. Only valid if `natIpAllocateOption` is set to MANUAL_ONLY.
 
+  - [**`enable_dynamic_port_allocation`**](#attr-nats-enable_dynamic_port_allocation): *(Optional `bool`)*<a name="attr-nats-enable_dynamic_port_allocation"></a>
+
+    Enable Dynamic Port Allocation.
+    If minPortsPerVm is set, minPortsPerVm must be set to a power of two greater than or equal to 32.
+    If minPortsPerVm is not set, a minimum of 32 ports will be allocated to a VM from this NAT config.
+    If maxPortsPerVm is set, maxPortsPerVm must be set to a power of two greater than minPortsPerVm.
+    If maxPortsPerVm is not set, a maximum of 65536 ports will be allocated to a VM from this NAT config.
+    Mutually exclusive with enableEndpointIndependentMapping.
+
   - [**`min_ports_per_vm`**](#attr-nats-min_ports_per_vm): *(Optional `number`)*<a name="attr-nats-min_ports_per_vm"></a>
 
     Minimum number of ports allocated to a VM from this NAT.
 
+  - [**`min_ports_per_vm`**](#attr-nats-min_ports_per_vm): *(Optional `number`)*<a name="attr-nats-min_ports_per_vm"></a>
+
+    Maximum number of ports allocated to a VM from this NAT.
+
   - [**`udp_idle_timeout_sec`**](#attr-nats-udp_idle_timeout_sec): *(Optional `number`)*<a name="attr-nats-udp_idle_timeout_sec"></a>
 
     Timeout (in seconds) for UDP connections.

README.tfdoc.hcl

@@ -40,7 +40,7 @@ section {
     A [Terraform] module for [Google Cloud Platform (GCP)][gcp].
 
     **_This module supports Terraform version 1
-    and is compatible with the Terraform Google Provider version 4._** and 5._**
+    and is compatible with the Terraform Google Provider version 4._** (4.28 and later) and 5._**
 
     This module is part of our Infrastructure as Code (IaC) framework
     that enables our users and customers to easily deploy and manage reusable,
@@ -269,13 +269,32 @@ section {
               END
             }
 
+            attribute "enable_dynamic_port_allocation" {
+              type = bool
+              description = <<-END
+                Enable Dynamic Port Allocation.
+                If minPortsPerVm is set, minPortsPerVm must be set to a power of two greater than or equal to 32.
+                If minPortsPerVm is not set, a minimum of 32 ports will be allocated to a VM from this NAT config.
+                If maxPortsPerVm is set, maxPortsPerVm must be set to a power of two greater than minPortsPerVm.
+                If maxPortsPerVm is not set, a maximum of 65536 ports will be allocated to a VM from this NAT config.
+                Mutually exclusive with enableEndpointIndependentMapping.
+              END
+            }
+
             attribute "min_ports_per_vm" {
               type        = number
               description = <<-END
                 Minimum number of ports allocated to a VM from this NAT.
               END
             }
 
+            attribute "min_ports_per_vm" {
+              type        = number
+              description = <<-END
+                Maximum number of ports allocated to a VM from this NAT.
+              END
+            }
+
             attribute "udp_idle_timeout_sec" {
               type        = number
               default     = 30

nat.tf

@@ -15,7 +15,9 @@ resource "google_compute_router_nat" "nat" {
 
   nat_ips = try(each.value.nat_ips, null)
 
+  enable_dynamic_port_allocation = try(each.value.enable_dynamic_port_allocation, null)
   min_ports_per_vm = try(each.value.min_ports_per_vm, null)
+  max_ports_per_vm = try(each.value.max_ports_per_vm, null)
 
   udp_idle_timeout_sec             = try(each.value.idle_timeout_sec, 30)
   icmp_idle_timeout_sec            = try(each.value.icmp_idle_timeout_sec, 30)

versions.tf

@@ -8,7 +8,7 @@ terraform {
   required_providers {
     google = {
       source  = "hashicorp/google"
-      version = ">= 3.50, < 6"
+      version = ">= 4.28, < 6"
     }
   }
 }