feat(3p/nix/nix-daemon): Implement Worker::QueryPathFromHashPart r/1357

Change-Id: Id351a0c82f4d6e79a8f272674d8d8e86e12a9400
Reviewed-on: https://cl.tvl.fyi/c/depot/+/1232
Tested-by: BuildkiteCI
Reviewed-by: isomer <isomer@tvl.fyi>

1 files changed, 9 insertions, 0 deletions

diff --git a/third_party/nix/src/nix-daemon/nix-daemon-proto.cc b/third_party/nix/src/nix-daemon/nix-daemon-proto.cc
index ef45fbd2a9..3c34e8bfa6 100644
--- a/third_party/nix/src/nix-daemon/nix-daemon-proto.cc
+++ b/third_party/nix/src/nix-daemon/nix-daemon-proto.cc
@@ -141,6 +141,15 @@ class WorkerServiceImpl final : public WorkerService::Service {
     return Status::OK;
   }
 
+  Status QueryPathFromHashPart(grpc::ServerContext* context,
+                               const nix::proto::HashPart* request,
+                               StorePath* response) override {
+    auto hash_part = request->hash_part();
+    auto path = store_->queryPathFromHashPart(hash_part);
+    response->set_path(path);
+    return Status::OK;
+  }
+
   Status QueryMissing(grpc::ServerContext* context, const StorePaths* request,
                       nix::proto::QueryMissingResponse* response) override {
     std::set<Path> targets;