Revert "Updated datatype for mtu" (#4643) (#8829)

Signed-off-by: Modular Magician <magic-modules@google.com>

.changelog/4643.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+compute: reverted datatype change for `mtu` in `google_compute_interconnect_attachment` as it was incompatible with existing state representation
+```

google/resource_compute_interconnect_attachment.go

@@ -145,7 +145,7 @@ traffic will traverse through. Required if type is DEDICATED, must not
 be set if type is PARTNER.`,
 			},
 			"mtu": {
-				Type:     schema.TypeInt,
+				Type:     schema.TypeString,
 				Computed: true,
 				Optional: true,
 				Description: `Maximum Transmission Unit (MTU), in bytes, of packets passing through
@@ -645,20 +645,11 @@ func flattenComputeInterconnectAttachmentDescription(v interface{}, d *schema.Re
 }
 
 func flattenComputeInterconnectAttachmentMtu(v interface{}, d *schema.ResourceData, config *Config) interface{} {
-	// Handles the string fixed64 format
-	if strVal, ok := v.(string); ok {
-		if intVal, err := strconv.ParseInt(strVal, 10, 64); err == nil {
-			return intVal
-		}
-	}
-
-	// number values are represented as float64
+	// Handles int given in float64 format
 	if floatVal, ok := v.(float64); ok {
-		intVal := int(floatVal)
-		return intVal
+		return fmt.Sprintf("%d", int(floatVal))
 	}
-
-	return v // let terraform core handle it otherwise
+	return v
 }
 
 func flattenComputeInterconnectAttachmentBandwidth(v interface{}, d *schema.ResourceData, config *Config) interface{} {

google/resource_compute_interconnect_attachment_generated_test.go

@@ -0,0 +1,110 @@
+// ----------------------------------------------------------------------------
+//
+//     ***     AUTO GENERATED CODE    ***    AUTO GENERATED CODE     ***
+//
+// ----------------------------------------------------------------------------
+//
+//     This file is automatically generated by Magic Modules and manual
+//     changes will be clobbered when the file is regenerated.
+//
+//     Please read more about how to change this file in
+//     .github/CONTRIBUTING.md.
+//
+// ----------------------------------------------------------------------------
+
+package google
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/terraform"
+)
+
+func TestAccComputeInterconnectAttachment_interconnectAttachmentBasicExample(t *testing.T) {
+	t.Parallel()
+
+	context := map[string]interface{}{
+		"random_suffix": randString(t, 10),
+	}
+
+	vcrTest(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		ExternalProviders: map[string]resource.ExternalProvider{
+			"random": {},
+		},
+		CheckDestroy: testAccCheckComputeInterconnectAttachmentDestroyProducer(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccComputeInterconnectAttachment_interconnectAttachmentBasicExample(context),
+			},
+			{
+				ResourceName:            "google_compute_interconnect_attachment.on_prem",
+				ImportState:             true,
+				ImportStateVerify:       true,
+				ImportStateVerifyIgnore: []string{"router", "candidate_subnets", "region"},
+			},
+		},
+	})
+}
+
+func testAccComputeInterconnectAttachment_interconnectAttachmentBasicExample(context map[string]interface{}) string {
+	return Nprintf(`
+resource "google_compute_interconnect_attachment" "on_prem" {
+  name                     = "tf-test-on-prem-attachment%{random_suffix}"
+  edge_availability_domain = "AVAILABILITY_DOMAIN_1"
+  type                     = "PARTNER"
+  router                   = google_compute_router.foobar.id
+  mtu                      = 1500
+}
+
+resource "google_compute_router" "foobar" {
+  name    = "router%{random_suffix}"
+  network = google_compute_network.foobar.name
+  bgp {
+    asn = 16550
+  }
+}
+
+resource "google_compute_network" "foobar" {
+  name                    = "network%{random_suffix}"
+  auto_create_subnetworks = false
+}
+`, context)
+}
+
+func testAccCheckComputeInterconnectAttachmentDestroyProducer(t *testing.T) func(s *terraform.State) error {
+	return func(s *terraform.State) error {
+		for name, rs := range s.RootModule().Resources {
+			if rs.Type != "google_compute_interconnect_attachment" {
+				continue
+			}
+			if strings.HasPrefix(name, "data.") {
+				continue
+			}
+
+			config := googleProviderConfig(t)
+
+			url, err := replaceVarsForTest(config, rs, "{{ComputeBasePath}}projects/{{project}}/regions/{{region}}/interconnectAttachments/{{name}}")
+			if err != nil {
+				return err
+			}
+
+			billingProject := ""
+
+			if config.BillingProject != "" {
+				billingProject = config.BillingProject
+			}
+
+			_, err = sendRequest(config, "GET", billingProject, url, config.userAgent, nil)
+			if err == nil {
+				return fmt.Errorf("ComputeInterconnectAttachment still exists at %s", url)
+			}
+		}
+
+		return nil
+	}
+}

website/docs/r/compute_interconnect_attachment.html.markdown

@@ -27,20 +27,34 @@ information, see Creating VLAN Attachments.
 
 
 
+<div class = "oics-button" style="float: right; margin: 0 0 -15px">
+  <a href="https://console.cloud.google.com/cloudshell/open?cloudshell_git_repo=https%3A%2F%2Fgit.luolix.top%2Fterraform-google-modules%2Fdocs-examples.git&cloudshell_working_dir=interconnect_attachment_basic&cloudshell_image=gcr.io%2Fgraphite-cloud-shell-images%2Fterraform%3Alatest&open_in_editor=main.tf&cloudshell_print=.%2Fmotd&cloudshell_tutorial=.%2Ftutorial.md" target="_blank">
+    <img alt="Open in Cloud Shell" src="//gstatic.com/cloudssh/images/open-btn.svg" style="max-height: 44px; margin: 32px auto; max-width: 100%;">
+  </a>
+</div>
 ## Example Usage - Interconnect Attachment Basic
 
 
 ```hcl
 resource "google_compute_interconnect_attachment" "on_prem" {
-  name         = "on-prem-attachment"
-  interconnect = "my-interconnect-id"
-  router       = google_compute_router.foobar.id
-  mtu          = 1500
+  name                     = "on-prem-attachment"
+  edge_availability_domain = "AVAILABILITY_DOMAIN_1"
+  type                     = "PARTNER"
+  router                   = google_compute_router.foobar.id
+  mtu                      = 1500
 }
 
 resource "google_compute_router" "foobar" {
   name    = "router"
   network = google_compute_network.foobar.name
+  bgp {
+    asn = 16550
+  }
+}
+
+resource "google_compute_network" "foobar" {
+  name                    = "network"
+  auto_create_subnetworks = false
 }
 ```