added data source for storage bucket object content

.changelog/4254.txt

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

google/data_source_storage_bucket_object_content.go

@@ -0,0 +1,61 @@
+package google
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"google.golang.org/api/storage/v1"
+)
+
+func dataSourceGoogleStorageBucketObjectContent() *schema.Resource {
+
+	dsSchema := datasourceSchemaFromResourceSchema(resourceStorageBucketObject().Schema)
+
+	addRequiredFieldsToSchema(dsSchema, "bucket")
+	addRequiredFieldsToSchema(dsSchema, "name")
+	addOptionalFieldsToSchema(dsSchema, "content")
+
+	return &schema.Resource{
+		Read:   dataSourceGoogleStorageBucketObjectContentRead,
+		Schema: dsSchema,
+	}
+}
+
+func dataSourceGoogleStorageBucketObjectContentRead(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+	userAgent, err := generateUserAgentString(d, config.userAgent)
+	if err != nil {
+		return err
+	}
+
+	bucket := d.Get("bucket").(string)
+	name := d.Get("name").(string)
+
+	objectsService := storage.NewObjectsService(config.NewStorageClient(userAgent))
+	getCall := objectsService.Get(bucket, name)
+
+	res, err := getCall.Download()
+	if err != nil {
+		return fmt.Errorf("Error downloading storage bucket object: %s", err)
+	}
+
+	defer res.Body.Close()
+	var bodyString string
+
+	if res.StatusCode == http.StatusOK {
+		bodyBytes, err := ioutil.ReadAll(res.Body)
+		if err != nil {
+			return fmt.Errorf("Error reading all  from res.Body: %s", err)
+		}
+		bodyString = string(bodyBytes)
+	}
+
+	if err := d.Set("content", bodyString); err != nil {
+		return fmt.Errorf("Error setting content: %s", err)
+	}
+
+	d.SetId(bucket + "-" + name)
+	return nil
+}

google/data_source_storage_bucket_object_content_test.go

@@ -0,0 +1,52 @@
+package google
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+)
+
+func TestAccDataSourceStorageBucketObjectContent_Basic(t *testing.T) {
+
+	bucket := "tf-bucket-object-content-" + randString(t, 10)
+	content := "qwertyuioasdfghjk1234567!!@#$*"
+
+	vcrTest(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccDataSourceStorageBucketObjectContent_Basic(content, bucket),
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttrSet("data.google_storage_bucket_object_content.default", "content"),
+					resource.TestCheckResourceAttr("data.google_storage_bucket_object_content.default", "content", content),
+				),
+			},
+		},
+	})
+}
+
+func testAccDataSourceStorageBucketObjectContent_Basic(content, bucket string) string {
+	return fmt.Sprintf(`
+data "google_storage_bucket_object_content" "default" {
+	bucket = google_storage_bucket.contenttest.name
+        name = google_storage_bucket_object.object.name
+        depends_on =  [
+          google_storage_bucket_object.object,
+          google_storage_bucket.contenttest, 
+        ]         
+}
+
+resource "google_storage_bucket_object" "object" {
+        name = "butterfly01"
+        content = "%s"
+        bucket = google_storage_bucket.contenttest.name
+}
+
+resource "google_storage_bucket" "contenttest" {
+        name = "%s"
+        location = "US"
+        force_destroy = true
+}`, content, bucket)
+}

google/provider.go

@@ -669,6 +669,7 @@ func Provider() *schema.Provider {
 			"google_sql_ca_certs":                                 dataSourceGoogleSQLCaCerts(),
 			"google_sql_database_instance":                        dataSourceSqlDatabaseInstance(),
 			"google_storage_bucket_object":                        dataSourceGoogleStorageBucketObject(),
+			"google_storage_bucket_object_content":                dataSourceGoogleStorageBucketObjectContent(),
 			"google_storage_object_signed_url":                    dataSourceGoogleSignedUrl(),
 			"google_storage_project_service_account":              dataSourceGoogleStorageProjectServiceAccount(),
 			"google_storage_transfer_project_service_account":     dataSourceGoogleStorageTransferProjectServiceAccount(),

website/docs/d/storage_bucket_object_content.html.markdown

@@ -0,0 +1,47 @@
+---
+subcategory: "Cloud Storage"
+layout: "google"
+page_title: "Google: google_storage_bucket_object_content"
+sidebar_current: "docs-google-datasource-storage-bucket-object_content"
+description: |-
+  Get content of a Google Cloud Storage bucket object.
+---
+
+
+# google\_storage\_bucket\_object\_content
+
+Gets an existing object content inside an existing bucket in Google Cloud Storage service (GCS).
+See [the official documentation](https://cloud.google.com/storage/docs/key-terms#objects)
+and
+[API](https://cloud.google.com/storage/docs/json_api/v1/objects).
+
+~> **Warning:** The object content will be saved in the state, and visiable to everyone who has access to the state file.
+
+## Example Usage
+
+Example file object  stored within a folder.
+
+```hcl
+data "google_storage_bucket_object_content" "key" {
+  name   = "encryptedkey"
+  bucket = "keystore"
+}
+
+output "encrypted" {
+  value = data.google_storage_bucket_object_content.key.content
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `bucket` - (Required) The name of the containing bucket.
+
+* `name` - (Required) The name of the object.
+
+## Attributes Reference
+
+The following attributes are exported:
+
+* `content` - (Computed) [Content-Language](https://tools.ietf.org/html/rfc7231#section-3.1.3.2) of the object content.

website/google.erb

@@ -1336,6 +1336,10 @@
           <a href="/docs/providers/google/d/storage_bucket_object.html">google_storage_bucket_object</a>
           </li>
 
+          <li>
+          <a href="/docs/providers/google/d/storage_bucket_object_content.html">google_storage_bucket_object_content</a>
+          </li>
+
           <li>
           <a href="/docs/providers/google/d/storage_project_service_account.html">google_storage_project_service_account</a>
           </li>