feat(iam_api_key): add data source (#2647)

* feat(iam): add iam api key datasource

* fix: golangci-lint errors

* docs(iam): add documentation for IAM api key datasource

---------

Co-authored-by: Rémy Léone <[email protected]>

Author: tbellavia

docs/data-sources/iam_api_key.md

@@ -0,0 +1,25 @@
+---
+subcategory: "IAM"
+page_title: "Scaleway: scaleway_iam_api_key"
+---
+
+# scaleway_iam_api_key
+
+Gets information about an existing IAM API key. For more information, refer to the [IAM API documentation](https://www.scaleway.com/en/developers/api/iam/#api-keys-3665ae).
+
+## Example Usage
+
+```hcl
+# Get api key infos by id (access_key)
+data "scaleway_iam_api_key" "main" {
+  access_key = "SCWABCDEFGHIJKLMNOPQ"
+}
+```
+
+## Argument Reference
+
+- `access_key` - The access key of the IAM API key which is also the ID of the API key.
+
+## Attribute Reference
+
+Exported attributes are the ones from `iam_api_key` [resource](../resources/iam_api_key.md) except the `secret_key` field

internal/provider/provider.go

@@ -255,6 +255,7 @@ func Provider(config *Config) plugin.ProviderFunc {
 				"scaleway_iam_group":                           iam.DataSourceGroup(),
 				"scaleway_iam_ssh_key":                         iam.DataSourceSSHKey(),
 				"scaleway_iam_user":                            iam.DataSourceUser(),
+				"scaleway_iam_api_key":                         iam.DataSourceAPIKey(),
 				"scaleway_instance_image":                      instance.DataSourceImage(),
 				"scaleway_instance_ip":                         instance.DataSourceIP(),
 				"scaleway_instance_placement_group":            instance.DataSourcePlacementGroup(),

internal/services/iam/api_key_data_source.go

@@ -0,0 +1,38 @@
+package iam
+
+import (
+	"context"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"github.com/scaleway/terraform-provider-scaleway/v2/internal/datasource"
+)
+
+func DataSourceAPIKey() *schema.Resource {
+	dsSchema := datasource.SchemaFromResourceSchema(ResourceAPIKey().Schema)
+
+	dsSchema["access_key"].Required = true
+	dsSchema["access_key"].Computed = false
+	delete(dsSchema, "secret_key")
+	return &schema.Resource{
+		ReadContext: DataSourceIamAPIKeyRead,
+		Schema:      dsSchema,
+	}
+}
+
+func DataSourceIamAPIKeyRead(ctx context.Context, d *schema.ResourceData, m interface{}) diag.Diagnostics {
+	accessKey := d.Get("access_key").(string)
+
+	d.SetId(accessKey)
+
+	diags := resourceIamAPIKeyRead(ctx, d, m)
+	if diags != nil {
+		return append(diags, diag.Errorf("failed to read iam api key state")...)
+	}
+
+	if d.Id() == "" {
+		return diag.Errorf("iam api key (%s) not found", accessKey)
+	}
+
+	return nil
+}

internal/services/iam/api_key_data_source_test.go

@@ -0,0 +1,45 @@
+package iam_test
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+	"github.com/scaleway/terraform-provider-scaleway/v2/internal/acctest"
+)
+
+func TestAccDataSourceApiKey_Basic(t *testing.T) {
+	tt := acctest.NewTestTools(t)
+	defer tt.Cleanup()
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:          func() { acctest.PreCheck(t) },
+		ProviderFactories: tt.ProviderFactories,
+		CheckDestroy: resource.ComposeTestCheckFunc(
+			testAccCheckIamAPIKeyDestroy(tt),
+		),
+		Steps: []resource.TestStep{
+			{
+				Config: `
+						resource "scaleway_iam_application" "main" {
+							name = "tf_tests_app_key_basic"
+						}
+
+						resource "scaleway_iam_api_key" "main" {
+							application_id = scaleway_iam_application.main.id
+							description = "tf_tests_with_application"
+						}
+
+						data "scaleway_iam_api_key" "main" {
+							access_key = scaleway_iam_api_key.main.id
+						}
+				`,
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckIamAPIKeyExists(tt, "scaleway_iam_api_key.main"),
+					resource.TestCheckResourceAttrPair("data.scaleway_iam_api_key.main", "access_key", "scaleway_iam_api_key.main", "id"),
+					resource.TestCheckResourceAttrPair("data.scaleway_iam_api_key.main", "id", "scaleway_iam_api_key.main", "id"),
+					resource.TestCheckResourceAttrPair("data.scaleway_iam_api_key.main", "application_id", "scaleway_iam_application.main", "id"),
+				),
+			},
+		},
+	})
+}