Add object compression support (#6292)

Add support for streaming (golang/LZ77/snappy) compression.

cmd/api-errors.go

@@ -292,6 +292,7 @@ const (
 	ErrMissingHeaders
 	ErrAdminConfigNotificationTargetsFailed
 	ErrAdminProfilerNotEnabled
+	ErrInvalidDecompressedSize
 )
 
 // error code to APIError structure, these fields carry respective
@@ -1403,6 +1404,11 @@ var errorCodeResponse = map[APIErrorCode]APIError{
 		Description:    "Some headers in the query are missing from the file. Check the file and try again.",
 		HTTPStatusCode: http.StatusBadRequest,
 	},
+	ErrInvalidDecompressedSize: {
+		Code:           "XMinioInvalidDecompressedSize",
+		Description:    "The data provided is unfit for decompression",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 	// Add your error structure here.
 }
 
@@ -1622,6 +1628,12 @@ func toAPIErrorCode(err error) (apiErr APIErrorCode) {
 
 	}
 
+	// Compression errors
+	switch err {
+	case errInvalidDecompressedSize:
+		apiErr = ErrInvalidDecompressedSize
+	}
+
 	if apiErr != ErrNone {
 		// If there was a match in the above switch case.
 		return apiErr