From 29094716f33b8a040163393634e8d78a863bf628 Mon Sep 17 00:00:00 2001
From: Yarik Briukhovetskyi <114298166+yariks5s@users.noreply.github.com>
Date: Thu, 9 Jul 2026 14:38:07 +0000
Subject: [PATCH] Store GcsStoredContentEncoding to detect decompressive
 transcoding

---
 .../include/aws/s3/model/HeadObjectResult.h      | 16 ++++++++++++++++
 .../source/model/HeadObjectResult.cpp            |  7 +++++++
 2 files changed, 23 insertions(+)

diff --git a/generated/src/aws-cpp-sdk-s3/include/aws/s3/model/HeadObjectResult.h b/generated/src/aws-cpp-sdk-s3/include/aws/s3/model/HeadObjectResult.h
index f6dca8e589eb..5fca429252c6 100644
--- a/generated/src/aws-cpp-sdk-s3/include/aws/s3/model/HeadObjectResult.h
+++ b/generated/src/aws-cpp-sdk-s3/include/aws/s3/model/HeadObjectResult.h
@@ -309,12 +309,25 @@ namespace Model
      * the Content-Type header field.</p>
      */
     inline const Aws::String& GetContentEncoding() const { return m_contentEncoding; }
+    inline bool ContentEncodingHasBeenSet() const { return m_contentEncodingHasBeenSet; }
     template<typename ContentEncodingT = Aws::String>
     void SetContentEncoding(ContentEncodingT&& value) { m_contentEncodingHasBeenSet = true; m_contentEncoding = std::forward<ContentEncodingT>(value); }
     template<typename ContentEncodingT = Aws::String>
     HeadObjectResult& WithContentEncoding(ContentEncodingT&& value) { SetContentEncoding(std::forward<ContentEncodingT>(value)); return *this;}
     ///@}
 
+    ///@{
+    /**
+    * <p>ClickHouse extension: the
+    * <code>x-goog-stored-content-encoding</code> response header returned by
+    * Google Cloud Storage. Indicates the encoding the object is stored with,
+    * which differs from <code>Content-Encoding</code> when GCS applies
+    * decompressive transcoding</p>
+    */
+    inline const Aws::String& GetGcsStoredContentEncoding() const { return m_gcsStoredContentEncoding; }
+    inline bool GcsStoredContentEncodingHasBeenSet() const { return m_gcsStoredContentEncodingHasBeenSet; }
+    ///@}
+
     ///@{
     /**
      * <p>The language the content is in.</p>
@@ -658,6 +671,9 @@ namespace Model
     Aws::String m_contentEncoding;
     bool m_contentEncodingHasBeenSet = false;
 
+    Aws::String m_gcsStoredContentEncoding;
+    bool m_gcsStoredContentEncodingHasBeenSet = false;
+
     Aws::String m_contentLanguage;
     bool m_contentLanguageHasBeenSet = false;
 
diff --git a/generated/src/aws-cpp-sdk-s3/source/model/HeadObjectResult.cpp b/generated/src/aws-cpp-sdk-s3/source/model/HeadObjectResult.cpp
index 0976a1601804..dc7ba8f1ce56 100644
--- a/generated/src/aws-cpp-sdk-s3/source/model/HeadObjectResult.cpp
+++ b/generated/src/aws-cpp-sdk-s3/source/model/HeadObjectResult.cpp
@@ -168,6 +168,13 @@ HeadObjectResult& HeadObjectResult::operator =(const Aws::AmazonWebServiceResult
     m_contentEncodingHasBeenSet = true;
   }
 
+  // ClickHouse extension, GCS reports the stored (pre-transcoding) content encoding
+  const auto& gcsStoredContentEncodingIter = headers.find("x-goog-stored-content-encoding");
+  if (gcsStoredContentEncodingIter != headers.end()) {
+    m_gcsStoredContentEncoding = gcsStoredContentEncodingIter->second;
+    m_gcsStoredContentEncodingHasBeenSet = true;
+  }
+
   const auto& contentLanguageIter = headers.find("content-language");
   if(contentLanguageIter != headers.end())
   {