Update RAGAnything related

README.md

@@ -1162,36 +1162,91 @@ LightRAG now seamlessly integrates with [RAG-Anything](https://github.com/HKUDS/
     ```python
     import asyncio
     from raganything import RAGAnything
+    from lightrag import LightRAG
     from lightrag.llm.openai import openai_complete_if_cache, openai_embed
+    from lightrag.utils import EmbeddingFunc
+    import os
 
-   async def main():
-       # Initialize RAGAnything with LightRAG integration
-       rag = RAGAnything(
-           working_dir="./rag_storage",
-           llm_model_func=lambda prompt, **kwargs: openai_complete_if_cache(
-               "gpt-4o-mini", prompt, api_key="your-api-key", **kwargs
-           ),
-           embedding_func=lambda texts: openai_embed(
-               texts, model="text-embedding-3-large", api_key="your-api-key"
+    async def load_existing_lightrag():
+        # First, create or load an existing LightRAG instance
+        lightrag_working_dir = "./existing_lightrag_storage"
+
+        # Check if previous LightRAG instance exists
+        if os.path.exists(lightrag_working_dir) and os.listdir(lightrag_working_dir):
+            print("✅ Found existing LightRAG instance, loading...")
+        else:
+            print("❌ No existing LightRAG instance found, will create new one")
+
+        # Create/Load LightRAG instance with your configurations
+        lightrag_instance = LightRAG(
+            working_dir=lightrag_working_dir,
+            llm_model_func=lambda prompt, system_prompt=None, history_messages=[], **kwargs: openai_complete_if_cache(
+                "gpt-4o-mini",
+                prompt,
+                system_prompt=system_prompt,
+                history_messages=history_messages,
+                api_key="your-api-key",
+                **kwargs,
             ),
+            embedding_func=EmbeddingFunc(
                 embedding_dim=3072,
+                max_token_size=8192,
+                func=lambda texts: openai_embed(
+                    texts,
+                    model="text-embedding-3-large",
+                    api_key=api_key,
+                    base_url=base_url,
+                ),
+            )
         )
 
-       # Process multimodal documents
+        # Initialize storage (this will load existing data if available)
+        await lightrag_instance.initialize_storages()
+
+        # Now initialize RAGAnything with the existing LightRAG instance
+        rag = RAGAnything(
+            lightrag=lightrag_instance,  # Pass the existing LightRAG instance
+            # Only need vision model for multimodal processing
+            vision_model_func=lambda prompt, system_prompt=None, history_messages=[], image_data=None, **kwargs: openai_complete_if_cache(
+                "gpt-4o",
+                "",
+                system_prompt=None,
+                history_messages=[],
+                messages=[
+                    {"role": "system", "content": system_prompt} if system_prompt else None,
+                    {"role": "user", "content": [
+                        {"type": "text", "text": prompt},
+                        {"type": "image_url", "image_url": {"url": f"data:image/jpeg;base64,{image_data}"}}
+                    ]} if image_data else {"role": "user", "content": prompt}
+                ],
+                api_key="your-api-key",
+                **kwargs,
+            ) if image_data else openai_complete_if_cache(
+                "gpt-4o-mini",
+                prompt,
+                system_prompt=system_prompt,
+                history_messages=history_messages,
+                api_key="your-api-key",
+                **kwargs,
+            )
+            # Note: working_dir, llm_model_func, embedding_func, etc. are inherited from lightrag_instance
+        )
+
+        # Query the existing knowledge base
+        result = await rag.query_with_multimodal(
+            "What data has been processed in this LightRAG instance?",
+            mode="hybrid"
+        )
+        print("Query result:", result)
+
+        # Add new multimodal documents to the existing LightRAG instance
         await rag.process_document_complete(
-           file_path="path/to/your/document.pdf",
+            file_path="path/to/new/multimodal_document.pdf",
             output_dir="./output"
         )
 
-       # Query multimodal content
-       result = await rag.query_with_multimodal(
-           "What are the main findings shown in the figures and tables?",
-           mode="hybrid"
-       )
-       print(result)
-
     if __name__ == "__main__":
-       asyncio.run(main())
+        asyncio.run(load_existing_lightrag())
     ```
 
 For detailed documentation and advanced usage, please refer to the [RAG-Anything repository](https://github.com/HKUDS/RAG-Anything).

examples/modalprocessors_example.py

@@ -9,6 +9,7 @@ import argparse
 from lightrag.llm.openai import openai_complete_if_cache, openai_embed
 from lightrag.kg.shared_storage import initialize_pipeline_status
 from lightrag import LightRAG
+from lightrag.utils import EmbeddingFunc
 from raganything.modalprocessors import (
     ImageModalProcessor,
     TableModalProcessor,
@@ -165,12 +166,16 @@ async def process_equation_example(lightrag: LightRAG, llm_model_func):
 async def initialize_rag(api_key: str, base_url: str = None):
     rag = LightRAG(
         working_dir=WORKING_DIR,
-        embedding_func=lambda texts: openai_embed(
+        embedding_func=EmbeddingFunc(
+            embedding_dim=3072,
+            max_token_size=8192,
+            func=lambda texts: openai_embed(
                 texts,
                 model="text-embedding-3-large",
                 api_key=api_key,
                 base_url=base_url,
             ),
+        ),
         llm_model_func=lambda prompt,
         system_prompt=None,
         history_messages=[],

examples/raganything_example.py

@@ -12,6 +12,7 @@ import os
 import argparse
 import asyncio
 from lightrag.llm.openai import openai_complete_if_cache, openai_embed
+from lightrag.utils import EmbeddingFunc
 from raganything.raganything import RAGAnything
 
 
@@ -89,14 +90,16 @@ async def process_with_rag(
                 base_url=base_url,
                 **kwargs,
             ),
-            embedding_func=lambda texts: openai_embed(
+            embedding_func=EmbeddingFunc(
+                embedding_dim=3072,
+                max_token_size=8192,
+                func=lambda texts: openai_embed(
                     texts,
                     model="text-embedding-3-large",
                     api_key=api_key,
                     base_url=base_url,
                 ),
-            embedding_dim=3072,
-            max_token_size=8192,
+            ),
         )
 
         # Process document