Just-MR: Add git commit update map

1 files changed, 43 insertions, 0 deletions

diff --git a/src/other_tools/ops_maps/git_update_map.hpp b/src/other_tools/ops_maps/git_update_map.hpp
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+++ b/src/other_tools/ops_maps/git_update_map.hpp
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+// 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_OPS_MAPS_GIT_UPDATE_MAP_HPP
+#define INCLUDED_SRC_OTHER_TOOLS_OPS_MAPS_GIT_UPDATE_MAP_HPP
+
+#include "src/buildtool/file_system/git_repo.hpp"
+#include "src/buildtool/multithreading/async_map_consumer.hpp"
+#include "src/utils/cpp/hash_combine.hpp"
+
+using StringPair = std::pair<std::string, std::string>;
+
+/// \brief Maps a pair of repository url and branch to an updated commit hash.
+using GitUpdateMap = AsyncMapConsumer<StringPair, std::string>;
+
+namespace std {
+template <>
+struct hash<StringPair> {
+    [[nodiscard]] auto operator()(StringPair const& ct) const noexcept
+        -> std::size_t {
+        size_t seed{};
+        hash_combine<std::string>(&seed, ct.first);
+        hash_combine<std::string>(&seed, ct.second);
+        return seed;
+    }
+};
+}  // namespace std
+
+[[nodiscard]] auto CreateGitUpdateMap(GitCASPtr const& git_cas,
+                                      std::size_t jobs) -> GitUpdateMap;
+
+#endif  // INCLUDED_SRC_OTHER_TOOLS_OPS_MAPS_GIT_UPDATE_MAP_HPP
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