refactor: app design concept (#305)

embedchain/config/apps/OpenSourceAppConfig.py

@@ -0,0 +1,30 @@
+from chromadb.utils import embedding_functions
+
+from .BaseAppConfig import BaseAppConfig
+
+
+class OpenSourceAppConfig(BaseAppConfig):
+    """
+    Config to initialize an embedchain custom `OpenSourceApp` instance, with extra config options.
+    """
+
+    def __init__(self, log_level=None, host=None, port=None, id=None):
+        """
+        :param log_level: Optional. (String) Debug level
+        ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'].
+        :param id: Optional. ID of the app. Document metadata will have this id.
+        :param host: Optional. Hostname for the database server.
+        :param port: Optional. Port for the database server.
+        """
+        super().__init__(
+            log_level=log_level, ef=OpenSourceAppConfig.default_embedding_function(), host=host, port=port, id=id
+        )
+
+    @staticmethod
+    def default_embedding_function():
+        """
+        Sets embedding function to default (`all-MiniLM-L6-v2`).
+
+        :returns: The default embedding function
+        """
+        return embedding_functions.SentenceTransformerEmbeddingFunction(model_name="all-MiniLM-L6-v2")