Added datasource files for cloudfunctions2_function (#6523) (#12673)

Signed-off-by: Modular Magician <[email protected]>

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/6523.txt

@@ -0,0 +1,3 @@
+```release-note:new-datasource
+`google_cloudfunctions2_function`
+```

google/data_source_google_cloudfunctions2_function.go

@@ -0,0 +1,41 @@
+package google
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+)
+
+func dataSourceGoogleCloudFunctions2Function() *schema.Resource {
+	// Generate datasource schema from resource
+	dsSchema := datasourceSchemaFromResourceSchema(resourceCloudfunctions2function().Schema)
+
+	// Set 'Required' schema elements
+	addRequiredFieldsToSchema(dsSchema, "name", "location")
+
+	// Set 'Optional' schema elements
+	addOptionalFieldsToSchema(dsSchema, "project")
+
+	return &schema.Resource{
+		Read:   dataSourceGoogleCloudFunctions2FunctionRead,
+		Schema: dsSchema,
+	}
+}
+
+func dataSourceGoogleCloudFunctions2FunctionRead(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+
+	project, err := getProject(d, config)
+	if err != nil {
+		return err
+	}
+
+	d.SetId(fmt.Sprintf("projects/%s/locations/%s/functions/%s", project, d.Get("location").(string), d.Get("name").(string)))
+
+	err = resourceCloudfunctions2functionRead(d, meta)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

google/data_source_google_cloudfunctions2_function_test.go

@@ -0,0 +1,75 @@
+package google
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+)
+
+func TestAccDataSourceGoogleCloudFunctions2Function_basic(t *testing.T) {
+	t.Parallel()
+
+	funcDataNameHttp := "data.google_cloudfunctions2_function.function_http_v2"
+	functionName := fmt.Sprintf("tf-test-%s", randString(t, 10))
+	bucketName := fmt.Sprintf("tf-test-bucket-%d", randInt(t))
+	zipFilePath := "./test-fixtures/cloudfunctions2/function-source.zip"
+
+	vcrTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckCloudfunctions2functionDestroyProducer(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccDataSourceGoogleCloudFunctions2FunctionConfig(functionName,
+					bucketName, zipFilePath),
+				Check: resource.ComposeTestCheckFunc(
+					checkDataSourceStateMatchesResourceStateWithIgnores(funcDataNameHttp,
+						"google_cloudfunctions2_function.function_http_v2", map[string]struct{}{"build_config.0.source.0.storage_source.0.bucket": {}, "build_config.0.source.0.storage_source.0.object": {}}),
+				),
+			},
+		},
+	})
+}
+
+func testAccDataSourceGoogleCloudFunctions2FunctionConfig(functionName, bucketName, zipFilePath string) string {
+	return fmt.Sprintf(`
+resource "google_storage_bucket" "bucket" {
+  name     = "%s"
+  location = "US"
+}
+	
+resource "google_storage_bucket_object" "object" {
+  name   = "function-source.zip"
+  bucket = google_storage_bucket.bucket.name
+  source = "%s"
+}
+
+resource "google_cloudfunctions2_function" "function_http_v2" {
+  name = "%s"
+  location = "us-central1"
+  description = "a new function"
+
+  build_config {
+    runtime = "nodejs12"
+    entry_point = "helloHttp"
+    source {
+      storage_source {
+        bucket = google_storage_bucket.bucket.name
+        object = google_storage_bucket_object.object.name
+      }
+    }
+  }
+
+  service_config {
+    max_instance_count  = 1
+    available_memory    = "256Mi"
+    timeout_seconds     = 60
+  }
+}
+data "google_cloudfunctions2_function" "function_http_v2" {
+  name = google_cloudfunctions2_function.function_http_v2.name
+  location = "us-central1"
+}
+`, bucketName, zipFilePath, functionName)
+}

google/provider.go

@@ -780,6 +780,7 @@ func Provider() *schema.Provider {
 			"google_client_config":                                dataSourceGoogleClientConfig(),
 			"google_client_openid_userinfo":                       dataSourceGoogleClientOpenIDUserinfo(),
 			"google_cloudfunctions_function":                      dataSourceGoogleCloudFunctionsFunction(),
+			"google_cloudfunctions2_function":                     dataSourceGoogleCloudFunctions2Function(),
 			"google_cloud_identity_groups":                        dataSourceGoogleCloudIdentityGroups(),
 			"google_cloud_identity_group_memberships":             dataSourceGoogleCloudIdentityGroupMemberships(),
 			"google_cloud_run_locations":                          dataSourceGoogleCloudRunLocations(),

google/resource_cloudfunctions2_function.go

@@ -905,11 +905,37 @@ func flattenCloudfunctions2functionBuildConfigSourceStorageSource(v interface{},
 }
 
 func flattenCloudfunctions2functionBuildConfigSourceStorageSourceBucket(v interface{}, d *schema.ResourceData, config *Config) interface{} {
-	return d.Get("build_config.0.source.0.storage_source.0.bucket")
+	// This flatten function is shared between the resource and the datasource.
+	// TF Input format: {bucket-name}
+	// GET Response format: gcf-v2-sources-{Project-number}-{location}
+	// As TF Input and GET response values have different format,
+	// we will return TF Input value to prevent state drift.
+
+	if bVal, ok := d.GetOk("build_config.0.source.0.storage_source.0.bucket"); ok {
+		return bVal
+	}
+
+	// For the datasource, there is no prior TF Input for this attribute.
+	// Hence, GET Response value is returned.
+
+	return v
 }
 
 func flattenCloudfunctions2functionBuildConfigSourceStorageSourceObject(v interface{}, d *schema.ResourceData, config *Config) interface{} {
-	return d.Get("build_config.0.source.0.storage_source.0.object")
+	// This flatten function is shared between the resource and the datasource.
+	// TF Input format: {object-name}
+	// GET Response format: {function-name}/{object-name}
+	// As TF Input and GET response values have different format,
+	// we will return TF Input value to prevent state drift.
+
+	if ObjVal, ok := d.GetOk("build_config.0.source.0.storage_source.0.object"); ok {
+		return ObjVal
+	}
+
+	// For the datasource, there is no prior TF Input for this attribute.
+	// Hence, GET Response value is returned.
+
+	return v
 }
 
 func flattenCloudfunctions2functionBuildConfigSourceStorageSourceGeneration(v interface{}, d *schema.ResourceData, config *Config) interface{} {

website/docs/d/cloudfunctions2_function.html.markdown

@@ -0,0 +1,38 @@
+---
+subcategory: "Cloud Functions (2nd gen)"
+page_title: "Google: google_cloudfunctions2_function"
+description: |-
+  Get information about a Google Cloud Function (2nd gen).
+---
+
+# google\_cloudfunctions2\_function
+
+Get information about a Google Cloud Function (2nd gen). For more information see:
+
+* [API documentation](https://cloud.google.com/functions/docs/reference/rest/v2beta/projects.locations.functions).
+
+## Example Usage
+
+```hcl
+data "google_cloudfunctions2_function" "my-function" {
+  name = "function"
+  location = "us-central1"
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `name` - (Required) The name of a Cloud Function (2nd gen).
+
+* `location` - (Required) The location in which the resource belongs.
+
+- - -
+
+* `project` - (Optional) The project in which the resource belongs. If it
+    is not provided, the provider project is used.
+
+## Attributes Reference
+
+See [google_cloudfunctions2_function](https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/cloudfunctions2_function) resource for details of all the available attributes.