update

src/NATSBridge.jl

@@ -457,48 +457,66 @@ binary_bytes_direct = _serialize_data(UInt8[1, 2, 3], "binary")
 ```
 """
 function _serialize_data(data::Any, type::String)
-    if type == "text"  # Text data - convert to UTF-8 bytes
-        if isa(data, String)
-            return bytes(data)  # Convert string to UTF-8 bytes
-        else
-            error("Text data must be a String")
-        end
-    elseif type == "dictionary"  # JSON data - serialize directly
-        json_str = JSON.json(data)  # Convert Julia data to JSON string
-        return bytes(json_str)  # Convert JSON string to bytes
-    elseif type == "table"  # Table data - convert to Arrow IPC stream
-        io = IOBuffer()  # Create in-memory buffer
-        Arrow.write(io, data)  # Write data as Arrow IPC stream to buffer
-        return take!(io)  # Return the buffer contents as bytes
-    elseif type == "image"  # Image data - treat as binary
-        if isa(data, Vector{UInt8})
-            return data  # Return binary data directly
-        else
-            error("Image data must be Vector{UInt8}")
-        end
-    elseif type == "audio"  # Audio data - treat as binary
-        if isa(data, Vector{UInt8})
-            return data  # Return binary data directly
-        else
-            error("Audio data must be Vector{UInt8}")
-        end
-    elseif type == "video"  # Video data - treat as binary
-        if isa(data, Vector{UInt8})
-            return data  # Return binary data directly
-        else
-            error("Video data must be Vector{UInt8}")
-        end
-    elseif type == "binary"  # Binary data - treat as binary
-        if isa(data, IOBuffer)  # Check if data is an IOBuffer
-            return take!(data)  # Return buffer contents as bytes
-        elseif isa(data, Vector{UInt8})  # Check if data is already binary
-            return data  # Return binary data directly
-        else  # Unsupported binary data type
-            error("Binary data must be binary (Vector{UInt8} or IOBuffer)")
-        end
-    else  # Unknown type
-        error("Unknown type: $type")
-    end
+  """ Example on how JSON.jl convert: dictionary -> json string -> json string bytes -> json string -> json object
+    d = Dict(
+      "name"=>"ton",
+      "age"=> 20,
+      "metadata" => Dict(
+        "height"=> 155,
+        "wife"=> "jane"
+      )
+    )
+
+    json_str = JSON.json(d)
+    json_str_bytes = Vector{UInt8}(json_str)
+    json_str_2 = String(json_str_bytes)
+    json_obj = JSON.parse(json_str_2)
+  """
+
+  if type == "text"  # Text data - convert to UTF-8 bytes
+      if isa(data, String)
+        data_bytes = Vector{UInt8}(data) # Convert string to UTF-8 bytes
+          return data_bytes  
+      else
+          error("Text data must be a String")
+      end
+  elseif type == "dictionary"  # JSON data - serialize directly
+      json_str = JSON.json(data)  # Convert Julia data to JSON string
+      json_str_bytes = Vector{UInt8}(json_str) # Convert JSON string to bytes
+      return json_str_bytes  
+  elseif type == "table"  # Table data - convert to Arrow IPC stream
+      io = IOBuffer()  # Create in-memory buffer
+      Arrow.write(io, data)  # Write data as Arrow IPC stream to buffer
+      return take!(io)  # Return the buffer contents as bytes
+  elseif type == "image"  # Image data - treat as binary
+      if isa(data, Vector{UInt8})
+          return data  # Return binary data directly
+      else
+          error("Image data must be Vector{UInt8}")
+      end
+  elseif type == "audio"  # Audio data - treat as binary
+      if isa(data, Vector{UInt8})
+          return data  # Return binary data directly
+      else
+          error("Audio data must be Vector{UInt8}")
+      end
+  elseif type == "video"  # Video data - treat as binary
+      if isa(data, Vector{UInt8})
+          return data  # Return binary data directly
+      else
+          error("Video data must be Vector{UInt8}")
+      end
+  elseif type == "binary"  # Binary data - treat as binary
+      if isa(data, IOBuffer)  # Check if data is an IOBuffer
+          return take!(data)  # Return buffer contents as bytes
+      elseif isa(data, Vector{UInt8})  # Check if data is already binary
+          return data  # Return binary data directly
+      else  # Unsupported binary data type
+          error("Binary data must be binary (Vector{UInt8} or IOBuffer)")
+      end
+  else  # Unknown type
+      error("Unknown type: $type")
+  end
 end
 
 
@@ -675,7 +693,7 @@ function _deserialize_data(
         return String(data)  # Convert bytes to string
     elseif type == "dictionary"  # JSON data - deserialize
         json_str = String(data)  # Convert bytes to string
-        return JSON.parse(json_str)  # Parse JSON string to Julia data structure
+        return JSON.parse(json_str)  # Parse JSON string to JSON object
     elseif type == "table"  # Table data - deserialize Arrow IPC stream
         io = IOBuffer(data)  # Create buffer from bytes
         df = Arrow.Table(io)  # Read Arrow IPC format from buffer