GitRepo: Change logic that creates commits to explicitly give directory

In preparation for subsequent changes, specify the directory path
containing the tree content to be committed explicitly. This change
will allow eventually to be able to specify paths that are
different from the root path of the repository in which the commit
is created.

This commit renames and refactors StageAndCommitAllAnnonymous to
allow a directory path to be passed. The just-mr and serve service
logic is updated such that current behaviour is otherwise
unchanged.

1 files changed, 9 insertions, 6 deletions

diff --git a/src/buildtool/file_system/git_repo.hpp b/src/buildtool/file_system/git_repo.hpp
index 1e5ec839..31d9eb82 100644
--- a/src/buildtool/file_system/git_repo.hpp
+++ b/src/buildtool/file_system/git_repo.hpp
@@ -151,13 +151,16 @@ class GitRepo {
     using anon_logger_t = std::function<void(std::string const&, bool)>;
     using anon_logger_ptr = std::shared_ptr<anon_logger_t>;
 
-    /// \brief Stage all in current path and commit with given message.
+    /// \brief Create tree from entries at given directory and commit it with
+    /// given message. Currently, the caller must guarantee that given path is
+    /// a subdirectory of the repository root path.
     /// Only possible with real repository and thus non-thread-safe.
-    /// Returns the commit hash, or nullopt if failure.
-    /// It guarantees the logger is called exactly once with fatal if failure.
-    [[nodiscard]] auto StageAndCommitAllAnonymous(
-        std::string const& message,
-        anon_logger_ptr const& logger) noexcept -> std::optional<std::string>;
+    /// \returns The commit hash, or nullopt if failure. It guarantees the
+    /// logger is called exactly once with fatal if failure.
+    [[nodiscard]] auto CommitDirectory(std::filesystem::path const& dir,
+                                       std::string const& message,
+                                       anon_logger_ptr const& logger) noexcept
+        -> std::optional<std::string>;
 
     /// \brief Create annotated tag for given commit.
     /// Only possible with real repository and thus non-thread-safe.