Just-MR: Add commit to WS root git map

1 files changed, 64 insertions, 0 deletions

diff --git a/src/other_tools/root_maps/commit_git_map.hpp b/src/other_tools/root_maps/commit_git_map.hpp
new file mode 100644
index 00000000..e032cf65
--- /dev/null
+++ b/src/other_tools/root_maps/commit_git_map.hpp
@@ -0,0 +1,64 @@
+// Copyright 2022 Huawei Cloud Computing Technology Co., Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef INCLUDED_SRC_OTHER_TOOLS_ROOT_MAPS_COMMIT_GIT_MAP_HPP
+#define INCLUDED_SRC_OTHER_TOOLS_ROOT_MAPS_COMMIT_GIT_MAP_HPP
+
+#include <string>
+
+#include "nlohmann/json.hpp"
+#include "src/other_tools/just_mr/utils.hpp"
+#include "src/other_tools/ops_maps/critical_git_op_map.hpp"
+#include "src/utils/cpp/hash_combine.hpp"
+
+struct GitRepoInfo {
+    // hash can be a commit or tree
+    std::string hash{}; /* key */
+    std::string repo_url{};
+    std::string branch{};
+    std::string subdir{};
+
+    [[nodiscard]] auto operator==(const GitRepoInfo& other) const -> bool {
+        return hash == other.hash;
+    }
+};
+
+namespace std {
+template <>
+struct hash<GitRepoInfo> {
+    [[nodiscard]] auto operator()(const GitRepoInfo& ct) const noexcept
+        -> std::size_t {
+        return std::hash<std::string>{}(ct.hash);
+    }
+};
+}  // namespace std
+
+/// \brief Maps a Git repository commit hash to its tree workspace root.
+using CommitGitMap = AsyncMapConsumer<GitRepoInfo, nlohmann::json>;
+
+[[nodiscard]] auto CreateCommitGitMap(
+    gsl::not_null<CriticalGitOpMap*> const& critical_git_op_map,
+    JustMR::PathsPtr const& just_mr_paths,
+    std::size_t jobs) -> CommitGitMap;
+
+void EnsureCommit(GitRepoInfo const& repo_info,
+                  std::string const& fetch_repo,
+                  std::filesystem::path const& repo_root,
+                  GitCASPtr const& git_cas,
+                  gsl::not_null<CriticalGitOpMap*> const& critical_git_op_map,
+                  gsl::not_null<TaskSystem*> const& ts,
+                  CommitGitMap::SetterPtr const& ws_setter,
+                  CommitGitMap::LoggerPtr const& logger);
+
+#endif  // INCLUDED_SRC_OTHER_TOOLS_ROOT_MAPS_COMMIT_GIT_MAP_HPP
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