Use common interface for reading tree entries and leafs

...in LocalApi and BazelApi.

1 files changed, 39 insertions, 0 deletions

diff --git a/src/buildtool/execution_api/local/local_cas_reader.hpp b/src/buildtool/execution_api/local/local_cas_reader.hpp
new file mode 100644
index 00000000..69baf3a9
--- /dev/null
+++ b/src/buildtool/execution_api/local/local_cas_reader.hpp
@@ -0,0 +1,39 @@
+// Copyright 2024 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_BUILDTOOL_EXECUTION_API_LOCAL_LOCAL_CAS_READER_HPP
+#define INCLUDED_SRC_BUILDTOOL_EXECUTION_API_LOCAL_LOCAL_CAS_READER_HPP
+
+#include <optional>
+
+#include "src/buildtool/common/artifact_digest.hpp"
+#include "src/buildtool/common/bazel_types.hpp"
+#include "src/buildtool/file_system/git_repo.hpp"
+#include "src/buildtool/storage/local_cas.hpp"
+
+class LocalCasReader final {
+  public:
+    explicit LocalCasReader(LocalCAS<true> const& cas) noexcept : cas_(cas) {}
+
+    [[nodiscard]] auto ReadDirectory(ArtifactDigest const& digest)
+        const noexcept -> std::optional<bazel_re::Directory>;
+
+    [[nodiscard]] auto ReadGitTree(ArtifactDigest const& digest) const noexcept
+        -> std::optional<GitRepo::tree_entries_t>;
+
+  private:
+    LocalCAS<true> const& cas_;
+};
+
+#endif  // INCLUDED_SRC_BUILDTOOL_EXECUTION_API_LOCAL_LOCAL_CAS_READER_HPP
\ No newline at end of file