feat(server): add tracing spans and caching to archive and blame services

- Add tracing spans with repo labels for archive and blame operations
- Implement caching for archive list entries when using OID selectors
- Implement caching for blame operations when using OID selectors
- Add detailed

server/branch.rs

@@ -9,8 +9,12 @@ impl branch_service_server::BranchService for GitksService {
         request: tonic::Request<ListBranchesRequest>,
     ) -> Result<tonic::Response<ListBranchesResponse>, tonic::Status> {
         let inner = request.into_inner();
+        let repo = self.repo_label(inner.repository.as_ref());
+        let span = tracing::info_span!("branch.list_branches", %repo);
+        let _enter = span.enter();
         let gb = self.resolve(inner.repository.as_ref())?;
         let resp = gb.list_branches(inner).map_err(into_status)?;
+        tracing::info!(%repo, count = resp.branches.len(), "list_branches done");
         Ok(tonic::Response::new(resp))
     }
 
@@ -19,6 +23,10 @@ impl branch_service_server::BranchService for GitksService {
         request: tonic::Request<GetBranchRequest>,
     ) -> Result<tonic::Response<Branch>, tonic::Status> {
         let inner = request.into_inner();
+        let repo = self.repo_label(inner.repository.as_ref());
+        let name = inner.name.clone();
+        let span = tracing::info_span!("branch.get_branch", %repo, %name);
+        let _enter = span.enter();
         let gb = self.resolve(inner.repository.as_ref())?;
         let resp = gb.get_branch(inner).map_err(into_status)?;
         Ok(tonic::Response::new(resp))
@@ -29,8 +37,13 @@ impl branch_service_server::BranchService for GitksService {
         request: tonic::Request<CreateBranchRequest>,
     ) -> Result<tonic::Response<Branch>, tonic::Status> {
         let inner = request.into_inner();
+        let repo = self.repo_label(inner.repository.as_ref());
+        let name = inner.name.clone();
+        let span = tracing::info_span!("branch.create_branch", %repo, %name);
+        let _enter = span.enter();
         let gb = self.resolve(inner.repository.as_ref())?;
         let resp = gb.create_branch(inner).map_err(into_status)?;
+        tracing::info!(%repo, %name, "branch created");
         Ok(tonic::Response::new(resp))
     }
 
@@ -39,8 +52,13 @@ impl branch_service_server::BranchService for GitksService {
         request: tonic::Request<DeleteBranchRequest>,
     ) -> Result<tonic::Response<()>, tonic::Status> {
         let inner = request.into_inner();
+        let repo = self.repo_label(inner.repository.as_ref());
+        let name = inner.name.clone();
+        let span = tracing::info_span!("branch.delete_branch", %repo, %name);
+        let _enter = span.enter();
         let gb = self.resolve(inner.repository.as_ref())?;
         gb.delete_branch(inner).map_err(into_status)?;
+        tracing::info!(%repo, %name, "branch deleted");
         Ok(tonic::Response::new(()))
     }
 
@@ -49,8 +67,14 @@ impl branch_service_server::BranchService for GitksService {
         request: tonic::Request<RenameBranchRequest>,
     ) -> Result<tonic::Response<Branch>, tonic::Status> {
         let inner = request.into_inner();
+        let repo = self.repo_label(inner.repository.as_ref());
+        let old = inner.old_name.clone();
+        let new = inner.new_name.clone();
+        let span = tracing::info_span!("branch.rename_branch", %repo, %old, %new);
+        let _enter = span.enter();
         let gb = self.resolve(inner.repository.as_ref())?;
         let resp = gb.rename_branch(inner).map_err(into_status)?;
+        tracing::info!(%repo, old = %old, new = %new, "branch renamed");
         Ok(tonic::Response::new(resp))
     }
 
@@ -59,8 +83,13 @@ impl branch_service_server::BranchService for GitksService {
         request: tonic::Request<UpdateBranchTargetRequest>,
     ) -> Result<tonic::Response<Branch>, tonic::Status> {
         let inner = request.into_inner();
+        let repo = self.repo_label(inner.repository.as_ref());
+        let name = inner.name.clone();
+        let span = tracing::info_span!("branch.update_branch_target", %repo, %name);
+        let _enter = span.enter();
         let gb = self.resolve(inner.repository.as_ref())?;
         let resp = gb.update_branch_target(inner).map_err(into_status)?;
+        tracing::info!(%repo, %name, "branch target updated");
         Ok(tonic::Response::new(resp))
     }
 
@@ -69,8 +98,13 @@ impl branch_service_server::BranchService for GitksService {
         request: tonic::Request<SetBranchUpstreamRequest>,
     ) -> Result<tonic::Response<Branch>, tonic::Status> {
         let inner = request.into_inner();
+        let repo = self.repo_label(inner.repository.as_ref());
+        let name = inner.name.clone();
+        let span = tracing::info_span!("branch.set_branch_upstream", %repo, %name);
+        let _enter = span.enter();
         let gb = self.resolve(inner.repository.as_ref())?;
         let resp = gb.set_branch_upstream(inner).map_err(into_status)?;
+        tracing::info!(%repo, %name, "branch upstream set");
         Ok(tonic::Response::new(resp))
     }
 
@@ -79,8 +113,14 @@ impl branch_service_server::BranchService for GitksService {
         request: tonic::Request<CompareBranchRequest>,
     ) -> Result<tonic::Response<CompareBranchResponse>, tonic::Status> {
         let inner = request.into_inner();
+        let repo = self.repo_label(inner.repository.as_ref());
+        let source = inner.source_branch.clone();
+        let target = inner.target_branch.clone();
+        let span = tracing::info_span!("branch.compare_branch", %repo, %source, %target);
+        let _enter = span.enter();
         let gb = self.resolve(inner.repository.as_ref())?;
         let resp = gb.compare_branch(inner).map_err(into_status)?;
+        tracing::info!(%repo, %source, %target, ahead = resp.ahead_by, behind = resp.behind_by, "branch compared");
         Ok(tonic::Response::new(resp))
     }
 }