feat: add new custom app (#313)

embedchain/config/apps/BaseAppConfig.py

@@ -8,11 +8,11 @@ class BaseAppConfig(BaseConfig):
     Parent config to initialize an instance of `App`, `OpenSourceApp` or `CustomApp`.
     """
 
-    def __init__(self, log_level=None, ef=None, db=None, host=None, port=None, id=None):
+    def __init__(self, log_level=None, embedding_fn=None, db=None, host=None, port=None, id=None):
         """
         :param log_level: Optional. (String) Debug level
         ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'].
-        :param ef: Embedding function to use.
+        :param embedding_fn: Embedding function to use.
         :param db: Optional. (Vector) database instance to use for embeddings.
         :param id: Optional. ID of the app. Document metadata will have this id.
         :param host: Optional. Hostname for the database server.
@@ -20,26 +20,26 @@ class BaseAppConfig(BaseConfig):
         """
         self._setup_logging(log_level)
 
-        self.db = db if db else BaseAppConfig.default_db(ef=ef, host=host, port=port)
+        self.db = db if db else BaseAppConfig.default_db(embedding_fn=embedding_fn, host=host, port=port)
         self.id = id
         return
 
     @staticmethod
-    def default_db(ef, host, port):
+    def default_db(embedding_fn, host, port):
         """
         Sets database to default (`ChromaDb`).
 
-        :param ef: Embedding function to use in database.
+        :param embedding_fn: Embedding function to use in database.
         :param host: Optional. Hostname for the database server.
         :param port: Optional. Port for the database server.
         :returns: Default database
         :raises ValueError: BaseAppConfig knows no default embedding function.
         """
-        if ef is None:
+        if embedding_fn is None:
             raise ValueError("ChromaDb cannot be instantiated without an embedding function")
         from embedchain.vectordb.chroma_db import ChromaDB
 
-        return ChromaDB(ef=ef, host=host, port=port)
+        return ChromaDB(embedding_fn=embedding_fn, host=host, port=port)
 
     def _setup_logging(self, debug_level):
         level = logging.WARNING  # Default level