Add Logging Sink data source. (#7250) (#5207)

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

.changelog/7250.txt

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

google-beta/data_source_google_logging_sink.go

@@ -0,0 +1,44 @@
+package google
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+)
+
+func dataSourceGoogleLoggingSink() *schema.Resource {
+	dsSchema := datasourceSchemaFromResourceSchema(resourceLoggingSinkSchema())
+	dsSchema["id"] = &schema.Schema{
+		Type:        schema.TypeString,
+		Required:    true,
+		Description: `Required. An identifier for the resource in format: "projects/[PROJECT_ID]/sinks/[SINK_NAME]", "organizations/[ORGANIZATION_ID]/sinks/[SINK_NAME]", "billingAccounts/[BILLING_ACCOUNT_ID]/sinks/[SINK_NAME]", "folders/[FOLDER_ID]/sinks/[SINK_NAME]"`,
+	}
+
+	return &schema.Resource{
+		Read:   dataSourceGoogleLoggingSinkRead,
+		Schema: dsSchema,
+	}
+}
+
+func dataSourceGoogleLoggingSinkRead(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+	userAgent, err := generateUserAgentString(d, config.userAgent)
+	if err != nil {
+		return err
+	}
+
+	sinkId := d.Get("id").(string)
+
+	sink, err := config.NewLoggingClient(userAgent).Sinks.Get(sinkId).Do()
+	if err != nil {
+		return handleNotFoundError(err, d, fmt.Sprintf("Logging Sink %s", d.Id()))
+	}
+
+	if err := flattenResourceLoggingSink(d, sink); err != nil {
+		return err
+	}
+
+	d.SetId(sinkId)
+
+	return nil
+}

google-beta/data_source_google_logging_sink_test.go

@@ -0,0 +1,59 @@
+package google
+
+import (
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+)
+
+func TestAccDataSourceGoogleLoggingSink_basic(t *testing.T) {
+	t.Parallel()
+
+	context := map[string]interface{}{
+		"project_name": getTestProjectFromEnv(),
+		"sink_name":    "tf-test-sink-ds-" + randString(t, 10),
+		"bucket_name":  "tf-test-sink-ds-bucket-" + randString(t, 10),
+	}
+
+	vcrTest(t, resource.TestCase{
+		PreCheck:  func() { testAccPreCheck(t) },
+		Providers: testAccProviders,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccDataSourceGoogleLoggingSink_basic(context),
+				Check: resource.ComposeTestCheckFunc(
+					checkDataSourceStateMatchesResourceStateWithIgnores(
+						"data.google_logging_sink.basic",
+						"google_logging_project_sink.basic",
+						map[string]struct{}{
+							"project":                {},
+							"unique_writer_identity": {},
+						},
+					),
+				),
+			},
+		},
+	})
+}
+
+func testAccDataSourceGoogleLoggingSink_basic(context map[string]interface{}) string {
+	return Nprintf(`
+resource "google_logging_project_sink" "basic" {
+  name        = "%{sink_name}"
+  project     = "%{project_name}"
+  destination = "storage.googleapis.com/${google_storage_bucket.log-bucket.name}"
+  filter      = "logName=\"projects/%{project_name}/logs/compute.googleapis.com%%2Factivity_log\" AND severity>=ERROR"
+
+  unique_writer_identity = false
+}
+
+resource "google_storage_bucket" "log-bucket" {
+  name     = "%{bucket_name}"
+  location = "US"
+}
+
+data "google_logging_sink" "basic" {
+  id = google_logging_project_sink.basic.id
+}
+`, context)
+}

google-beta/provider.go

@@ -722,6 +722,7 @@ func Provider() *schema.Provider {
 			"google_folders":                                      dataSourceGoogleFolders(),
 			"google_folder_organization_policy":                   dataSourceGoogleFolderOrganizationPolicy(),
 			"google_logging_project_cmek_settings":                dataSourceGoogleLoggingProjectCmekSettings(),
+			"google_logging_sink":                                 dataSourceGoogleLoggingSink(),
 			"google_monitoring_notification_channel":              dataSourceMonitoringNotificationChannel(),
 			"google_monitoring_cluster_istio_service":             dataSourceMonitoringServiceClusterIstio(),
 			"google_monitoring_istio_canonical_service":           dataSourceMonitoringIstioCanonicalService(),

website/docs/d/logging_sink.html.markdown

@@ -0,0 +1,70 @@
+---
+subcategory: "Cloud (Stackdriver) Logging"
+description: |-
+  Get information about a Google Cloud Logging Sink.
+---
+
+# google\_logging\_sink
+
+Use this data source to get a project, folder, organization or billing account logging sink details.
+To get more information about Service, see:
+
+[API documentation](https://cloud.google.com/logging/docs/reference/v2/rest/v2/sinks)
+
+## Example Usage - Retrieve Project Logging Sink Basic
+
+
+```hcl
+data google_logging_sink "project-sink" {
+	id = "projects/0123456789/sinks/my-sink-name"
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+
+
+- - -
+
+* `id` - (Required) The identifier for the resource. 
+    Examples:
+
+    - `projects/[PROJECT_ID]/sinks/[SINK_NAME]`
+    - `organizations/[ORGANIZATION_ID]/sinks/[SINK_NAME]`
+    -  `billingAccounts/[BILLING_ACCOUNT_ID]/sinks/[SINK_NAME]`
+    - `folders/[FOLDER_ID]/sinks/[SINK_NAME]`
+
+
+## Attributes Reference
+
+In addition to the arguments listed above, the following computed attributes are exported:
+
+
+* `name` - The name of the logging sink.
+
+* `destination` - The destination of the sink (or, in other words, where logs are written to).
+
+* `filter` - The filter which is applied when exporting logs. Only log entries that match the filter are exported.
+
+* `description` - The description of this sink.
+
+* `disabled` - Whether this sink is disabled and it does not export any log entries.
+
+* `writer_identity` - The identity associated with this sink. This identity must be granted write access to the configured `destination`.
+
+* `bigquery_options` - Options that affect sinks exporting data to BigQuery. Structure is [documented below](#nested_bigquery_options).
+
+* `exclusions` - Log entries that match any of the exclusion filters are not exported. Structure is [documented below](#nested_exclusions).
+
+<a name="nested_bigquery_options"></a>The `bigquery_options` block supports:
+
+* `use_partitioned_tables` - Whether [BigQuery's partition tables](https://cloud.google.com/bigquery/docs/partitioned-tables) are used.
+
+<a name="nested_exclusions"></a>The `exclusions` block supports:
+
+* `name` - A client-assigned identifier, such as `load-balancer-exclusion`. 
+* `description` - A description of this exclusion.
+* `filter` - An advanced logs filter that matches the log entries to be excluded. 
+* `disabled` - Whether this exclusion is disabled and it does not exclude any log entries.