make wait_time a param

lang_agent/base.py

@@ -4,9 +4,13 @@ from PIL import Image
 from io import BytesIO
 import matplotlib.pyplot as plt
 from loguru import logger
+import jax
 
 from langgraph.graph.state import CompiledStateGraph
-from langchain_core.messages import BaseMessage
+from langchain_core.messages import BaseMessage, HumanMessage
+from langchain_core.messages.base import BaseMessageChunk
+
+from lang_agent.components.text_releaser import TextReleaser, AsyncTextReleaser
 
 
 class LangToolBase(ABC):
@@ -21,14 +25,111 @@ class LangToolBase(ABC):
 
 class GraphBase(ABC):
     workflow: CompiledStateGraph
+    streamable_tags: List[List[str]]
     
-    @abstractmethod
-    def invoke(self, *nargs, **kwargs):
-        pass
+    def _stream_result(self, *nargs, **kwargs):
 
-    async def ainvoke(self, *nargs, **kwargs):
-        """Async version of invoke. Subclasses should override for true async support."""
-        raise NotImplementedError("Subclass should implement ainvoke for async support")
+        def text_iterator():
+            for chunk, metadata in self.workflow.stream({"inp": nargs}, 
+                                                        stream_mode="messages", 
+                                                        subgraphs=True,
+                                                        **kwargs):
+                if isinstance(metadata, tuple):
+                    chunk, metadata = metadata
+
+                tags = metadata.get("tags")
+                if not (tags in self.streamable_tags):
+                    continue
+
+                if isinstance(chunk, (BaseMessageChunk, BaseMessage)) and getattr(chunk, "content", None):
+                    yield chunk.content
+
+        text_releaser = TextReleaser(*self.tool_node.get_delay_keys())
+        logger.info("streaming output")
+        for chunk in text_releaser.release(text_iterator()):
+            print(f"\033[92m{chunk}\033[0m", end="", flush=True)
+            yield chunk
+    
+    # NOTE: DEFAULT IMPLEMENTATION; Overide to support your class
+    def invoke(self, *nargs, as_stream:bool=False, as_raw:bool=False, **kwargs):
+        self._validate_input(*nargs, **kwargs)
+
+        if as_stream:
+            # Stream messages from the workflow
+            print("\033[93m====================STREAM OUTPUT=============================\033[0m")
+            return self._stream_result(*nargs, **kwargs)
+        else:
+            state = self.workflow.invoke({"inp": nargs})
+            
+            msg_list = jax.tree.leaves(state)
+
+            for e in msg_list:
+                if isinstance(e, BaseMessage):
+                    e.pretty_print()
+                    
+            if as_raw:
+                return msg_list
+
+            return msg_list[-1].content
+        
+    # NOTE: DEFAULT IMPLEMENTATION; Overide to support your class
+    async def ainvoke(self, *nargs, as_stream:bool=False, as_raw:bool=False, **kwargs):
+        """Async version of invoke using LangGraph's native async support."""
+        self._validate_input(*nargs, **kwargs)
+
+        if as_stream:
+            # Stream messages from the workflow asynchronously
+            print("\033[93m====================ASYNC STREAM OUTPUT=============================\033[0m")
+            return self._astream_result(*nargs, **kwargs)
+        else:
+            state = await self.workflow.ainvoke({"inp": nargs})
+            
+            msg_list = jax.tree.leaves(state)
+
+            for e in msg_list:
+                if isinstance(e, BaseMessage):
+                    e.pretty_print()
+                    
+            if as_raw:
+                return msg_list
+
+            return msg_list[-1].content
+
+    async def _astream_result(self, *nargs, **kwargs) -> AsyncIterator[str]:
+        """Async streaming using LangGraph's astream method."""
+
+        async def text_iterator():
+            async for chunk, metadata in self.workflow.astream(
+                {"inp": nargs}, 
+                stream_mode="messages", 
+                subgraphs=True,
+                **kwargs
+            ):
+                if isinstance(metadata, tuple):
+                    chunk, metadata = metadata
+
+                tags = metadata.get("tags")
+                if not (tags in self.streamable_tags):
+                    continue
+
+                if isinstance(chunk, (BaseMessageChunk, BaseMessage)) and getattr(chunk, "content", None):
+                    yield chunk.content
+
+        text_releaser = AsyncTextReleaser(*self.tool_node.get_delay_keys())
+        async for chunk in text_releaser.release(text_iterator()):
+            print(f"\033[92m{chunk}\033[0m", end="", flush=True)
+            yield chunk 
+    
+    def _validate_input(self, *nargs, **kwargs):
+        print("\033[93m====================INPUT HUMAN MESSAGES=============================\033[0m")
+        for e in nargs[0]["messages"]:
+            if isinstance(e, HumanMessage):
+                e.pretty_print()
+        print("\033[93m====================END INPUT HUMAN MESSAGES=============================\033[0m")
+        print(f"\033[93m model used: {self.config.llm_name}\033[0m")
+
+        assert len(nargs[0]["messages"]) >= 2, "need at least 1 system and 1 human message"
+        assert len(kwargs) == 0, "due to inp assumptions"
 
     def show_graph(self, ret_img:bool=False):
         #NOTE: just a useful tool for debugging; has zero useful functionality

lang_agent/components/text_releaser.py

@@ -37,7 +37,7 @@ class TextReleaser:
     """
     KEY_START_CHAR = "["
 
-    def __init__(self, start_key: str = None, end_key: str = None):
+    def __init__(self, start_key: str = None, end_key: str = None, wait_time:float=0.15):
         """
         Initialize the TextReleaser.
         
@@ -47,7 +47,7 @@ class TextReleaser:
         """
         self.start_key = start_key
         self.end_key = end_key
-        self.WAIT_TIME = 0.15  # sec/word in chinese
+        self.WAIT_TIME = wait_time  # sec/word in chinese
 
         # Internal state for producer-consumer pattern
         self._buffer: deque = deque()  # stores (chunk, chunk_start_pos, chunk_end_pos)
@@ -273,7 +273,7 @@ class AsyncTextReleaser:
     """
     KEY_START_CHAR = "["
 
-    def __init__(self, start_key: str = None, end_key: str = None):
+    def __init__(self, start_key: str = None, end_key: str = None, wait_time:float = 0.15):
         """
         Initialize the AsyncTextReleaser.
         
@@ -283,7 +283,7 @@ class AsyncTextReleaser:
         """
         self.start_key = start_key
         self.end_key = end_key
-        self.WAIT_TIME = 0.15  # sec/word in chinese
+        self.WAIT_TIME = wait_time  # sec/word in chinese
         self._accumulated_text = ""
 
     def _is_prefix_of_key(self, text: str) -> bool: