add accept-dataloss sub-command

Adds 'accept-dataloss' sub-command which allows designating a new
authoritative storage for a repository. This might be necessary if
a repository is in read-only mode and recovering the data is not
viable. The current version of the repository on the authoritative
storage is considered latest and versions on the other physical
storages will be overwritten with it.

1 files changed, 18 insertions, 1 deletions

diff --git a/proto/praefect.proto b/proto/praefect.proto
index 468642c53..22c2d61b7 100644
--- a/proto/praefect.proto
+++ b/proto/praefect.proto
@@ -6,7 +6,6 @@ option go_package = "gitlab.com/gitlab-org/gitaly/proto/go/gitalypb";
 
 import "lint.proto";
 import "shared.proto";
-import "google/protobuf/timestamp.proto";
 
 service PraefectInfoService {
   rpc RepositoryReplicas(RepositoryReplicasRequest) returns (RepositoryReplicasResponse) {
@@ -43,8 +42,26 @@ service PraefectInfoService {
       scope_level: STORAGE
     };
   }
+
+  // SetAuthoritativeStorage sets the authoritative storage for a repository on a given virtual storage.
+  // This causes the current version of the repository on the authoritative storage to be considered the
+  // latest and overwrite any other version on the virtual storage.
+  rpc SetAuthoritativeStorage(SetAuthoritativeStorageRequest) returns (SetAuthoritativeStorageResponse) {
+    option (op_type) = {
+      op: MUTATOR
+      scope_level: STORAGE
+    };
+  }
 }
 
+message SetAuthoritativeStorageRequest {
+  string virtual_storage = 1 [(storage)=true];
+  string relative_path = 2;
+  string authoritative_storage = 3;
+}
+
+message SetAuthoritativeStorageResponse {}
+
 message EnableWritesRequest {
   // virtual_storage is the name of the virtual storage to enable writes for.
   string virtual_storage = 1 [(storage)=true];