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-rw-r--r--src/libstore/s3.hh33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/libstore/s3.hh b/src/libstore/s3.hh
new file mode 100644
index 000000000000..5d5d3475c449
--- /dev/null
+++ b/src/libstore/s3.hh
@@ -0,0 +1,33 @@
+#pragma once
+
+#if ENABLE_S3
+
+#include "ref.hh"
+
+namespace Aws { namespace Client { class ClientConfiguration; } }
+namespace Aws { namespace S3 { class S3Client; } }
+
+namespace nix {
+
+struct S3Helper
+{
+    ref<Aws::Client::ClientConfiguration> config;
+    ref<Aws::S3::S3Client> client;
+
+    S3Helper();
+
+    ref<Aws::Client::ClientConfiguration> makeConfig();
+
+    struct DownloadResult
+    {
+        std::shared_ptr<std::string> data;
+        unsigned int durationMs;
+    };
+
+    DownloadResult getObject(
+        const std::string & bucketName, const std::string & key);
+};
+
+}
+
+#endif