1 files changed, 77 insertions, 0 deletions
diff --git a/src/other_tools/just_mr/utils.cpp b/src/other_tools/just_mr/utils.cpp
new file mode 100644
index 00000000..3470b7db
--- /dev/null
+++ b/src/other_tools/just_mr/utils.cpp
@@ -0,0 +1,77 @@
+// 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.
+
+#include "src/other_tools/just_mr/utils.hpp"
+
+#include "src/utils/cpp/path.hpp"
+
+namespace JustMR::Utils {
+
+auto GetGitCacheRoot() noexcept -> std::filesystem::path {
+    return LocalExecutionConfig::BuildRoot() / "git";
+}
+
+auto GetGitRoot(JustMR::PathsPtr const& just_mr_paths,
+                std::string const& repo_url) noexcept -> std::filesystem::path {
+    if (just_mr_paths->git_checkout_locations.contains(repo_url)) {
+        return std::filesystem::absolute(ToNormalPath(std::filesystem::path(
+            just_mr_paths->git_checkout_locations[repo_url])));
+    }
+    auto repo_url_as_path = std::filesystem::absolute(
+        ToNormalPath(std::filesystem::path(repo_url)));
+    if (not repo_url_as_path.empty() and
+        FileSystemManager::IsAbsolutePath(repo_url_as_path) and
+        FileSystemManager::IsDirectory(repo_url_as_path)) {
+        return repo_url_as_path;
+    }
+    return GetGitCacheRoot();
+}
+
+auto CreateTypedTmpDir(std::string const& type) noexcept -> TmpDirPtr {
+    // try to create parent dir
+    auto parent_path =
+        LocalExecutionConfig::BuildRoot() / "tmp-workspaces" / type;
+    return TmpDir::Create(parent_path);
+}
+
+auto GetArchiveTreeIDFile(std::string const& repo_type,
+                          std::string const& content) noexcept
+    -> std::filesystem::path {
+    return LocalExecutionConfig::BuildRoot() / "tree-map" / repo_type / content;
+}
+
+auto GetDistdirTreeIDFile(std::string const& content) noexcept
+    -> std::filesystem::path {
+    return LocalExecutionConfig::BuildRoot() / "distfiles-tree-map" / content;
+}
+
+auto WriteTreeIDFile(std::filesystem::path const& tree_id_file,
+                     std::string const& tree_id) noexcept -> bool {
+    // needs to be done safely, so use the rename trick
+    auto tmp_dir = TmpDir::Create(tree_id_file.parent_path());
+    if (not tmp_dir) {
+        Logger::Log(LogLevel::Error,
+                    "could not create tmp dir for writing tree id file {}",
+                    tree_id_file.string());
+        return false;
+    }
+    std::filesystem::path tmp_file{tmp_dir->GetPath() / "tmp_file"};
+    if (not FileSystemManager::WriteFile(tree_id, tmp_file)) {
+        Logger::Log(LogLevel::Error, "could not create tmp tree id file");
+        return false;
+    }
+    return FileSystemManager::Rename(tmp_file.string(), tree_id_file);
+}
+
+}  // namespace JustMR::Utils