Add logic to renew the origin_ca_certificate when expires

.changelog/2048.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+resource/cloudflare_origin_ca_certificate: add logic to renew certificate and add a new flag to set if we should renew earlier
+```

docs/resources/origin_ca_certificate.md

@@ -48,7 +48,8 @@ resource "cloudflare_origin_ca_certificate" "example" {
 
 ### Optional
 
-- `csr` (String) The Certificate Signing Request. Must be newline-encoded.
+- `csr` (String) The Certificate Signing Request. Must be newline-encoded. **Modifying this attribute will force creation of a new resource.**
+- `min_days_for_renewal` (Number) Number of days prior to the expiry to trigger a renewal of the certificate if a Terraform operation is run.
 - `requested_validity` (Number) The number of days for which the certificate should be valid. Available values: `7`, `30`, `90`, `365`, `730`, `1095`, `5475`. **Modifying this attribute will force creation of a new resource.**
 
 ### Read-Only

internal/provider/provider_test.go

@@ -125,6 +125,11 @@ func testAccPreCheckApiUserServiceKey(t *testing.T) {
 	if v := os.Getenv("CLOUDFLARE_API_USER_SERVICE_KEY"); v == "" {
 		t.Fatal("CLOUDFLARE_API_USER_SERVICE_KEY must be set for acceptance tests")
 	}
+
+	err := testAccProvider.Configure(context.Background(), terraform.NewResourceConfigRaw(nil))
+	if err != nil {
+		t.Fatal(err)
+	}
 }
 
 func testAccPreCheckDomain(t *testing.T) {

internal/provider/resource_cloudflare_origin_ca_certificate.go

@@ -12,6 +12,7 @@ import (
 	cloudflare "github.com/cloudflare/cloudflare-go"
 	"github.com/hashicorp/terraform-plugin-log/tflog"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/customdiff"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
 )
 
@@ -20,14 +21,42 @@ func resourceCloudflareOriginCACertificate() *schema.Resource {
 		Schema:        resourceCloudflareOriginCACertificateSchema(),
 		CreateContext: resourceCloudflareOriginCACertificateCreate,
 		ReadContext:   resourceCloudflareOriginCACertificateRead,
+		UpdateContext: resourceCloudflareOriginCACertificateRead,
 		DeleteContext: resourceCloudflareOriginCACertificateDelete,
 		Importer: &schema.ResourceImporter{
 			StateContext: schema.ImportStatePassthroughContext,
 		},
+		CustomizeDiff: customdiff.Sequence(
+			customdiff.ForceNewIf("expires_on", mustRenew),
+		),
 		Description: "Provides a Cloudflare Origin CA certificate used to protect traffic to your origin without involving a third party Certificate Authority.",
 	}
 }
 
+func mustRenew(ctx context.Context, d *schema.ResourceDiff, meta interface{}) bool {
+	// Check when the cert will expire
+	expiresonRaw := d.Get("expires_on")
+	if (expiresonRaw == nil) || (expiresonRaw == "") {
+		return false
+	}
+	expireson, _ := time.Parse(time.RFC3339, expiresonRaw.(string))
+
+	// Calculate when we should renew
+	earlyExpiration := expireson.AddDate(0, 0, -1*d.Get("min_days_for_renewal").(int))
+
+	if time.Now().After(earlyExpiration) {
+		tflog.Info(ctx, fmt.Sprintf("We will renew the certificate as we passed the expected date (%s)", earlyExpiration))
+		err := d.SetNewComputed("expires_on")
+		if err != nil {
+			tflog.Warn(ctx, fmt.Sprintf("error setting to renew the certificate: %s", err))
+			return false
+		}
+		return true
+	}
+
+	return false
+}
+
 func resourceCloudflareOriginCACertificateCreate(ctx context.Context, d *schema.ResourceData, meta interface{}) diag.Diagnostics {
 	client := meta.(*cloudflare.API)
 

internal/provider/resource_cloudflare_origin_ca_certificate_test.go

@@ -33,7 +33,6 @@ func TestAccCloudflareOriginCACertificate_Basic(t *testing.T) {
 
 	resource.Test(t, resource.TestCase{
 		PreCheck: func() {
-			testAccPreCheck(t)
 			testAccPreCheckApiUserServiceKey(t)
 		},
 		ProviderFactories: providerFactories,

internal/provider/schema_cloudflare_origin_ca_certificate.go

@@ -50,5 +50,10 @@ func resourceCloudflareOriginCACertificateSchema() map[string]*schema.Schema {
 			ValidateFunc: validation.IntInSlice([]int{7, 30, 90, 365, 730, 1095, 5475}),
 			Description:  fmt.Sprintf("The number of days for which the certificate should be valid. %s", renderAvailableDocumentationValuesIntSlice([]int{7, 30, 90, 365, 730, 1095, 5475})),
 		},
+		"min_days_for_renewal": {
+			Type:        schema.TypeInt,
+			Optional:    true,
+			Description: "Number of days prior to the expiry to trigger a renewal of the certificate if a Terraform operation is run.",
+		},
 	}
 }