fix embedding doc err

api/core/rag/embedding/cached_embedding.py

@@ -1,5 +1,7 @@
 import base64
 import logging
+import random
+import time
 from typing import Any, Optional, cast
 
 import numpy as np
@@ -19,11 +21,49 @@ from models.dataset import Embedding
 logger = logging.getLogger(__name__)
 
 
+def retry(max_retries: int, base_delay: int, max_wait_time: int = 16):
+    """
+    A retry decorator that uses an exponential backoff algorithm.
+    :param max_retries: The maximum number of retries.
+    :param base_delay: The base delay time in seconds.
+    :param max_wait_time: The maximum wait time in seconds.
+    :return: The decorated function.
+    """
+
+    def decorator(func):
+        def wrapper(*args, **kwargs):
+            retries = 0
+            while retries <= max_retries:
+                try:
+                    return func(*args, **kwargs)
+                except Exception as e:
+                    if retries == max_retries:
+                        raise e
+                    logger.warning(f"Attempt {retries + 1} failed: {e}")
+                    retries += 1
+                    delay = base_delay * 2**retries
+                    if delay > max_wait_time:
+                        delay = max_wait_time
+                    delay += random.uniform(0, 1)
+                    logger.info(f"Retrying in {delay:.2f} seconds...")
+                    time.sleep(delay)
+
+        return wrapper
+
+    return decorator
+
+
 class CacheEmbedding(Embeddings):
     def __init__(self, model_instance: ModelInstance, user: Optional[str] = None) -> None:
         self._model_instance = model_instance
         self._user = user
 
+    @retry(max_retries=10, base_delay=1, max_wait_time=16)
+    def text_embedding(self, texts: list[str]):
+        return self._model_instance.invoke_text_embedding(
+            texts=texts, user=self._user, input_type=EmbeddingInputType.DOCUMENT
+        )
+
     def embed_documents(self, texts: list[str]) -> list[list[float]]:
         """Embed search docs in batches of 10."""
         # use doc embedding cache or store if not exists
@@ -58,9 +98,7 @@ class CacheEmbedding(Embeddings):
                 for i in range(0, len(embedding_queue_texts), max_chunks):
                     batch_texts = embedding_queue_texts[i : i + max_chunks]
 
-                    embedding_result = self._model_instance.invoke_text_embedding(
-                        texts=batch_texts, user=self._user, input_type=EmbeddingInputType.DOCUMENT
-                    )
+                    embedding_result = self.text_embedding(batch_texts)
 
                     for vector in embedding_result.embeddings:
                         try: