1 files changed, 35 insertions, 6 deletions
diff --git a/src/buildtool/storage/backend_description.hpp b/src/buildtool/storage/backend_description.hpp
index c1ef17d7..9d912930 100644
--- a/src/buildtool/storage/backend_description.hpp
+++ b/src/buildtool/storage/backend_description.hpp
@@ -15,18 +15,47 @@
 #ifndef INCLUDED_SRC_BUILDTOOL_STORAGE_BACKEND_DESCRIPTION_HPP
 #define INCLUDED_SRC_BUILDTOOL_STORAGE_BACKEND_DESCRIPTION_HPP
 
+#include <memory>
 #include <optional>
 #include <string>
+#include <utility>
 #include <vector>
 
+#include "src/buildtool/common/artifact_digest.hpp"
 #include "src/buildtool/common/remote/remote_common.hpp"
+#include "src/buildtool/crypto/hash_function.hpp"
 #include "src/utils/cpp/expected.hpp"
 
-/// \brief String representation of the used execution backend.
-[[nodiscard]] auto DescribeBackend(
-    std::optional<ServerAddress> const& address,
-    ExecutionProperties const& properties,
-    std::vector<DispatchEndpoint> const& dispatch) noexcept
-    -> expected<std::string, std::string>;
+class BackendDescription final {
+  public:
+    explicit BackendDescription() noexcept;
+
+    /// \brief String representation of the used execution backend.
+    [[nodiscard]] static auto Describe(
+        std::optional<ServerAddress> const& address,
+        ExecutionProperties const& properties,
+        std::vector<DispatchEndpoint> const& dispatch) noexcept
+        -> expected<BackendDescription, std::string>;
+
+    [[nodiscard]] auto GetDescription() const noexcept -> std::string const& {
+        return *description_;
+    }
+
+    [[nodiscard]] auto HashContent(HashFunction hash_function) const noexcept
+        -> ArtifactDigest;
+
+    [[nodiscard]] auto operator==(
+        BackendDescription const& other) const noexcept -> bool {
+        return sha256_ == other.sha256_ or *sha256_ == *other.sha256_;
+    }
+
+  private:
+    explicit BackendDescription(std::shared_ptr<std::string> description,
+                                std::shared_ptr<std::string> sha256) noexcept
+        : description_{std::move(description)}, sha256_{std::move(sha256)} {}
+
+    std::shared_ptr<std::string> description_;
+    std::shared_ptr<std::string> sha256_;
+};
 
 #endif  // INCLUDED_SRC_BUILDTOOL_STORAGE_BACKEND_DESCRIPTION_HPP