intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 23 insertions, 0 deletions

diff --git a/library/cpp/monlib/encode/spack/varint.h b/library/cpp/monlib/encode/spack/varint.h
new file mode 100644
index 0000000000..7ac522dd6c
--- /dev/null
+++ b/library/cpp/monlib/encode/spack/varint.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <util/system/types.h>
+
+class IInputStream;
+class IOutputStream;
+
+namespace NMonitoring {
+    ui32 WriteVarUInt32(IOutputStream* output, ui32 value);
+
+    ui32 ReadVarUInt32(IInputStream* input);
+    size_t ReadVarUInt32(const ui8* buf, size_t len, ui32* result);
+
+    enum class EReadResult {
+        OK,
+        ERR_OVERFLOW,
+        ERR_UNEXPECTED_EOF,
+    };
+
+    [[nodiscard]]
+    EReadResult TryReadVarUInt32(IInputStream* input, ui32* value);
+
+}