1 files changed, 38 insertions, 0 deletions
diff --git a/third_party/nix/src/libstore/remote-fs-accessor.hh b/third_party/nix/src/libstore/remote-fs-accessor.hh
new file mode 100644
index 0000000000..c4f6e89c97
--- /dev/null
+++ b/third_party/nix/src/libstore/remote-fs-accessor.hh
@@ -0,0 +1,38 @@
+#pragma once
+
+#include "libstore/fs-accessor.hh"
+#include "libstore/store-api.hh"
+#include "libutil/ref.hh"
+
+namespace nix {
+
+class RemoteFSAccessor : public FSAccessor {
+  ref<Store> store;
+
+  std::map<Path, ref<FSAccessor>> nars;
+
+  Path cacheDir;
+
+  std::pair<ref<FSAccessor>, Path> fetch(const Path& path_);
+
+  friend class BinaryCacheStore;
+
+  Path makeCacheFile(const Path& storePath, const std::string& ext);
+
+  void addToCache(const Path& storePath, const std::string& nar,
+                  const ref<FSAccessor>& narAccessor);
+
+ public:
+  RemoteFSAccessor(const ref<Store>& store,
+                   const /* FIXME: use std::optional */ Path& cacheDir = "");
+
+  Stat stat(const Path& path) override;
+
+  StringSet readDirectory(const Path& path) override;
+
+  std::string readFile(const Path& path) override;
+
+  std::string readLink(const Path& path) override;
+};
+
+}  // namespace nix