fix: Reintroduce deprecated field/enum for backward compatibility

docs: Use absolute link targets in comments

The deprecated elements are still deprecated and should not be used; they're solely being reintroduced to avoid breaking changes in client libraries.

PiperOrigin-RevId: 402864419

google/monitoring/v3/alert.proto

@@ -223,8 +223,8 @@ message AlertPolicy {
  // scope are not evaluated.
  message LogMatch {
  // Required. A logs-based filter. See [Advanced Logs
- // Queries](/logging/docs/view/advanced-queries) for how this filter
- // should be constructed.
+ // Queries](https://cloud.google.com/logging/docs/view/advanced-queries)
+ // for how this filter should be constructed.
  string filter = 1 [(google.api.field_behavior) = REQUIRED];
 
  // Optional. A map from a label key to an extractor expression, which is
@@ -236,7 +236,7 @@ message AlertPolicy {
  // condition.
  //
  // Please see [the documentation on logs-based metric
- // `valueExtractor`s](/logging/docs/reference/v2/rest/v2/projects.metrics#LogMetric.FIELDS.value_extractor)
+ // `valueExtractor`s](https://cloud.google.com/logging/docs/reference/v2/rest/v2/projects.metrics#LogMetric.FIELDS.value_extractor)
  // for syntax and examples.
  map<string, string> label_extractors = 2;
  }

google/monitoring/v3/common.proto

@@ -460,3 +460,29 @@ enum ComparisonType {
  // True if the left argument is not equal to the right argument.
  COMPARISON_NE = 6;
 }
+
+// The tier of service for a Workspace. Please see the
+// [service tiers
+// documentation](https://cloud.google.com/monitoring/workspaces/tiers) for more
+// details.
+enum ServiceTier {
+ option deprecated = true;
+
+ // An invalid sentinel value, used to indicate that a tier has not
+ // been provided explicitly.
+ SERVICE_TIER_UNSPECIFIED = 0;
+
+ // The Stackdriver Basic tier, a free tier of service that provides basic
+ // features, a moderate allotment of logs, and access to built-in metrics.
+ // A number of features are not available in this tier. For more details,
+ // see [the service tiers
+ // documentation](https://cloud.google.com/monitoring/workspaces/tiers).
+ SERVICE_TIER_BASIC = 1;
+
+ // The Stackdriver Premium tier, a higher, more expensive tier of service
+ // that provides access to all Stackdriver features, lets you use Stackdriver
+ // with AWS accounts, and has a larger allotments for logs and metrics. For
+ // more details, see [the service tiers
+ // documentation](https://cloud.google.com/monitoring/workspaces/tiers).
+ SERVICE_TIER_PREMIUM = 2;
+}

google/monitoring/v3/notification.proto

@@ -19,6 +19,7 @@ package google.monitoring.v3;
 import "google/api/label.proto";
 import "google/api/launch_stage.proto";
 import "google/api/resource.proto";
+import "google/monitoring/v3/common.proto";
 import "google/monitoring/v3/mutation_record.proto";
 import "google/protobuf/wrappers.proto";
 
@@ -70,6 +71,10 @@ message NotificationChannelDescriptor {
  // description for how that field should be populated.
  repeated google.api.LabelDescriptor labels = 4;
 
+ // The tiers that support this notification channel; the project service tier
+ // must be one of the supported_tiers.
+ repeated ServiceTier supported_tiers = 5 [deprecated = true];
+
  // The product launch stage for channels of this type.
  google.api.LaunchStage launch_stage = 7;
 }