feat: Add automated RDB (AKA persistence) (#544)

PiperOrigin-RevId: 424884640
Source-Link: googleapis/googleapis@28c6bb9
Source-Link: googleapis/googleapis-gen@ea1c8b2
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See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Benjamin E. Coe <bencoe@google.com>

packages/google-cloud-redis/protos/google/cloud/redis/v1beta1/cloud_redis.proto

@@ -482,6 +482,63 @@ message Instance {
   // Optional. Read replica mode. Can only be specified when trying to create the
   // instance.
   ReadReplicasMode read_replicas_mode = 35 [(google.api.field_behavior) = OPTIONAL];
+
+  // Optional. Persistence configuration parameters
+  PersistenceConfig persistence_config = 37 [(google.api.field_behavior) = OPTIONAL];
+}
+
+// Configuration of the persistence functionality.
+message PersistenceConfig {
+  // Available Persistence modes.
+  enum PersistenceMode {
+    // Not set.
+    PERSISTENCE_MODE_UNSPECIFIED = 0;
+
+    // Persistence is disabled for the instance,
+    // and any existing snapshots are deleted.
+    DISABLED = 1;
+
+    // RDB based Persistence is enabled.
+    RDB = 2;
+  }
+
+  // Available snapshot periods for scheduling.
+  enum SnapshotPeriod {
+    // Not set.
+    SNAPSHOT_PERIOD_UNSPECIFIED = 0;
+
+    // Snapshot every 1 hour.
+    ONE_HOUR = 3;
+
+    // Snapshot every 6 hours.
+    SIX_HOURS = 4;
+
+    // Snapshot every 12 hours.
+    TWELVE_HOURS = 5;
+
+    // Snapshot every 24 hours.
+    TWENTY_FOUR_HOURS = 6;
+  }
+
+  // Optional. Controls whether Persistence features are enabled.
+  // If not provided, the existing value will be used.
+  PersistenceMode persistence_mode = 1 [(google.api.field_behavior) = OPTIONAL];
+
+  // Optional. Period between RDB snapshots. Snapshots will be attempted every period
+  // starting from the provided snapshot start time. For example, a start time
+  // of 01/01/2033 06:45 and SIX_HOURS snapshot period will do nothing until
+  // 01/01/2033, and then trigger snapshots every day at 06:45, 12:45, 18:45,
+  // and 00:45 the next day, and so on.
+  // If not provided, TWENTY_FOUR_HOURS will be used as default.
+  SnapshotPeriod rdb_snapshot_period = 2 [(google.api.field_behavior) = OPTIONAL];
+
+  // Output only. The next time that a snapshot attempt is scheduled to occur.
+  google.protobuf.Timestamp rdb_next_snapshot_time = 4 [(google.api.field_behavior) = OUTPUT_ONLY];
+
+  // Optional. Date and time that the first snapshot was/will be attempted, and to which
+  // future snapshots will be aligned.
+  // If not provided, the current time will be used.
+  google.protobuf.Timestamp rdb_snapshot_start_time = 5 [(google.api.field_behavior) = OPTIONAL];
 }
 
 // Request for [RescheduleMaintenance][google.cloud.redis.v1beta1.CloudRedis.RescheduleMaintenance].