allow copyObject to rotate storageClass of objects (#9362)

Added additional mint tests as well to verify, this
functionality.

Fixes #9357

cmd/object-handlers.go

@@ -610,10 +610,29 @@ func getCpObjMetadataFromHeader(ctx context.Context, r *http.Request, userMeta m
 	// remove SSE Headers from source info
 	crypto.RemoveSSEHeaders(defaultMeta)
 
+	// Storage class is special, it can be replaced regardless of the
+	// metadata directive, if set should be preserved and replaced
+	// to the destination metadata.
+	sc := r.Header.Get(xhttp.AmzStorageClass)
+	if sc == "" {
+		sc = r.URL.Query().Get(xhttp.AmzStorageClass)
+	}
+
 	// if x-amz-metadata-directive says REPLACE then
 	// we extract metadata from the input headers.
 	if isDirectiveReplace(r.Header.Get(xhttp.AmzMetadataDirective)) {
-		return extractMetadata(ctx, r)
+		emetadata, err := extractMetadata(ctx, r)
+		if err != nil {
+			return nil, err
+		}
+		if sc != "" {
+			emetadata[xhttp.AmzStorageClass] = sc
+		}
+		return emetadata, nil
+	}
+
+	if sc != "" {
+		defaultMeta[xhttp.AmzStorageClass] = sc
 	}
 
 	// if x-amz-metadata-directive says COPY then we
@@ -778,6 +797,13 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
 		return
 	}
 
+	// Validate storage class metadata if present
+	dstSc := r.Header.Get(xhttp.AmzStorageClass)
+	if dstSc != "" && !storageclass.IsValid(dstSc) {
+		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidStorageClass), r.URL, guessIsBrowserReq(r))
+		return
+	}
+
 	// Check if bucket encryption is enabled
 	_, encEnabled := globalBucketSSEConfigSys.Get(dstBucket)
 	// This request header needs to be set prior to setting ObjectOptions
@@ -842,6 +868,15 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
 		srcInfo.metadataOnly = true
 	}
 
+	var chStorageClass bool
+	if dstSc != "" {
+		sc, ok := srcInfo.UserDefined[xhttp.AmzStorageClass]
+		if (ok && dstSc != sc) || (srcInfo.StorageClass != dstSc) {
+			chStorageClass = true
+			srcInfo.metadataOnly = false
+		}
+	}
+
 	var reader io.Reader
 	var length = srcInfo.Size
 
@@ -923,9 +958,10 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
 		// If src == dst and either
 		// - the object is encrypted using SSE-C and two different SSE-C keys are present
 		// - the object is encrypted using SSE-S3 and the SSE-S3 header is present
-		// than execute a key rotation.
+		// - the object storage class is not changing
+		// then execute a key rotation.
 		var keyRotation bool
-		if cpSrcDstSame && (sseCopyC && sseC) {
+		if cpSrcDstSame && (sseCopyC && sseC) && !chStorageClass {
 			oldKey, err = ParseSSECopyCustomerRequest(r.Header, srcInfo.UserDefined)
 			if err != nil {
 				writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL, guessIsBrowserReq(r))

mint/run/core/awscli/test.sh

@@ -643,12 +643,139 @@ function test_copy_object() {
         out=$($function)
         rv=$?
         hash2=$(echo "$out" | jq -r .CopyObjectResult.ETag | sed -e 's/^"//' -e 's/"$//')
-        if [ $rv -eq 0 ] && [ "$HASH_1_KB" == "$hash2" ]; then
-            function="delete_bucket"
-            out=$(delete_bucket "$bucket_name")
+        if [ $rv -eq 0 ] && [ "$HASH_1_KB" != "$hash2" ]; then
+            # Verification failed
+            rv=1
+            out="Hash mismatch expected $HASH_1_KB, got $hash2"
+        fi
+    fi
+
+    if [ $rv -eq 0 ]; then
+        log_success "$(get_duration "$start_time")" "${test_function}"
+    else
+        # clean up and log error
+        ${AWS} s3 rb s3://"${bucket_name}" --force > /dev/null 2>&1
+        log_failure "$(get_duration "$start_time")" "${function}" "${out}"
+    fi
+
+    return $rv
+}
+
+# Copy object tests for server side copy
+# of the object, validates returned md5sum.
+# validates change in storage class as well
+function test_copy_object_storage_class() {
+    # log start time
+    start_time=$(get_time)
+
+    function="make_bucket"
+    bucket_name=$(make_bucket)
     rv=$?
-            # The command passed, but the verification failed
-            out="Verification failed for copied object"
+
+    # if make bucket succeeds upload a file
+    if [ $rv -eq 0 ]; then
+        function="${AWS} s3api put-object --body ${MINT_DATA_DIR}/datafile-1-kB --bucket ${bucket_name} --key datafile-1-kB"
+        out=$($function 2>&1)
+        rv=$?
+    else
+        # if make bucket fails, $bucket_name has the error output
+        out="${bucket_name}"
+    fi
+
+    # copy object server side
+    if [ $rv -eq 0 ]; then
+        function="${AWS} s3api copy-object --bucket ${bucket_name} --storage-class REDUCED_REDUNDANCY --key datafile-1-kB-copy --copy-source ${bucket_name}/datafile-1-kB"
+        test_function=${function}
+        out=$($function)
+        rv=$?
+        hash2=$(echo "$out" | jq -r .CopyObjectResult.ETag | sed -e 's/^"//' -e 's/"$//')
+        if [ $rv -eq 0 ] && [ "$HASH_1_KB" != "$hash2" ]; then
+            # Verification failed
+            rv=1
+            out="Hash mismatch expected $HASH_1_KB, got $hash2"
+        fi
+        # if copy succeeds stat the object
+        if [ $rv -eq 0 ]; then
+            function="${AWS} s3api head-object --bucket ${bucket_name} --key datafile-1-kB-copy"
+            # save the ref to function being tested, so it can be logged
+            test_function=${function}
+            out=$($function 2>&1)
+            storageClass=$(echo "$out" | jq -r .StorageClass)
+            rv=$?
+        fi
+        # if head-object succeeds, verify metadata has storage class
+        if [ $rv -eq 0 ]; then
+            if [ "${storageClass}" == "null" ]; then
+                rv=1
+                out="StorageClass was not applied"
+            elif [ "${storageClass}" == "STANDARD" ]; then
+                rv=1
+                out="StorageClass was applied incorrectly"
+            fi
+        fi
+    fi
+
+    if [ $rv -eq 0 ]; then
+        log_success "$(get_duration "$start_time")" "${test_function}"
+    else
+        # clean up and log error
+        ${AWS} s3 rb s3://"${bucket_name}" --force > /dev/null 2>&1
+        log_failure "$(get_duration "$start_time")" "${function}" "${out}"
+    fi
+
+    return $rv
+}
+
+# Copy object tests for server side copy
+# to itself by changing storage class
+function test_copy_object_storage_class_same() {
+    # log start time
+    start_time=$(get_time)
+
+    function="make_bucket"
+    bucket_name=$(make_bucket)
+    rv=$?
+
+    # if make bucket succeeds upload a file
+    if [ $rv -eq 0 ]; then
+        function="${AWS} s3api put-object --body ${MINT_DATA_DIR}/datafile-1-kB --bucket ${bucket_name} --key datafile-1-kB"
+        out=$($function 2>&1)
+        rv=$?
+    else
+        # if make bucket fails, $bucket_name has the error output
+        out="${bucket_name}"
+    fi
+
+    # copy object server side
+    if [ $rv -eq 0 ]; then
+        function="${AWS} s3api copy-object --bucket ${bucket_name} --storage-class REDUCED_REDUNDANCY --key datafile-1-kB --copy-source ${bucket_name}/datafile-1-kB"
+        test_function=${function}
+        out=$($function)
+        rv=$?
+        hash2=$(echo "$out" | jq -r .CopyObjectResult.ETag | sed -e 's/^"//' -e 's/"$//')
+        if [ $rv -eq 0 ] && [ "$HASH_1_KB" != "$hash2" ]; then
+            # Verification failed
+            rv=1
+            out="Hash mismatch expected $HASH_1_KB, got $hash2"
+        fi
+        # if copy succeeds stat the object
+        if [ $rv -eq 0 ]; then
+            function="${AWS} s3api head-object --bucket ${bucket_name} --key datafile-1-kB"
+            # save the ref to function being tested, so it can be logged
+            test_function=${function}
+            out=$($function 2>&1)
+            storageClass=$(echo "$out" | jq -r .StorageClass)
+            rv=$?
+        fi
+        # if head-object succeeds, verify metadata has storage class
+        if [ $rv -eq 0 ]; then
+            if [ "${storageClass}" == "null" ]; then
+                rv=1
+                out="StorageClass was not applied"
+            elif [ "${storageClass}" == "STANDARD" ]; then
+                rv=1
+                out="StorageClass was applied incorrectly"
+            fi
         fi
     fi
 
@@ -1471,7 +1598,7 @@ function test_legal_hold() {
         out="${bucket_name}"
     fi
 
-    # if upload succeeds download the file
+    # if upload succeeds stat the file
     if [ $rv -eq 0 ]; then
         function="${AWS} s3api head-object --bucket ${bucket_name} --key datafile-1-kB"
         # save the ref to function being tested, so it can be logged
@@ -1551,6 +1678,8 @@ main() {
     test_multipart_upload && \
     test_max_key_list && \
     test_copy_object && \
+    test_copy_object_storage_class && \
+    test_copy_object_storage_class_same && \
     test_presigned_object && \
     test_upload_object_10 && \
     test_multipart_upload_10 && \