improve confluence doc loader param validation (#9568)

libs/langchain/langchain/document_loaders/confluence.py

@@ -118,16 +118,15 @@ class ConfluenceLoader(BaseLoader):
     ):
         confluence_kwargs = confluence_kwargs or {}
         errors = ConfluenceLoader.validate_init_args(
-            url, api_key, username, oauth2, token
+            url=url,
+            api_key=api_key,
+            username=username,
+            session=session,
+            oauth2=oauth2,
+            token=token,
         )
         if errors:
             raise ValueError(f"Error(s) while validating input: {errors}")
-
-        self.base_url = url
-        self.number_of_retries = number_of_retries
-        self.min_retry_seconds = min_retry_seconds
-        self.max_retry_seconds = max_retry_seconds
-
         try:
             from atlassian import Confluence  # noqa: F401
         except ImportError:
@@ -136,6 +135,11 @@ class ConfluenceLoader(BaseLoader):
                 "`pip install atlassian-python-api`"
             )
 
+        self.base_url = url
+        self.number_of_retries = number_of_retries
+        self.min_retry_seconds = min_retry_seconds
+        self.max_retry_seconds = max_retry_seconds
+
         if session:
             self.confluence = Confluence(url=url, session=session, **confluence_kwargs)
         elif oauth2:
@@ -160,6 +164,7 @@ class ConfluenceLoader(BaseLoader):
         url: Optional[str] = None,
         api_key: Optional[str] = None,
         username: Optional[str] = None,
+        session: Optional[requests.Session] = None,
         oauth2: Optional[dict] = None,
         token: Optional[str] = None,
     ) -> Union[List, None]:
@@ -175,33 +180,28 @@ class ConfluenceLoader(BaseLoader):
                 "the other must be as well."
             )
 
-        if (api_key or username) and oauth2:
-            errors.append(
-                "Cannot provide a value for `api_key` and/or "
-                "`username` and provide a value for `oauth2`"
+        non_null_creds = list(
+            x is not None for x in ((api_key or username), session, oauth2, token)
         )
-
-        if oauth2 and oauth2.keys() != [
+        if sum(non_null_creds) > 1:
+            all_names = ("(api_key, username)", "session", "oath2", "token")
+            provided = tuple(n for x, n in zip(non_null_creds, all_names) if x)
+            errors.append(
+                f"Cannot provide a value for more than one of: {all_names}. Received "
+                f"values for: {provided}"
+            )
+        if oauth2 and set(oauth2.keys()) != {
             "access_token",
             "access_token_secret",
             "consumer_key",
             "key_cert",
-        ]:
+        }:
             errors.append(
                 "You have either omitted require keys or added extra "
                 "keys to the oauth2 dictionary. key values should be "
                 "`['access_token', 'access_token_secret', 'consumer_key', 'key_cert']`"
             )
-
-        if token and (api_key or username or oauth2):
-            errors.append(
-                "Cannot provide a value for `token` and a value for `api_key`, "
-                "`username` or `oauth2`"
-            )
-
-        if errors:
-            return errors
-        return None
+        return errors or None
 
     def load(
         self,

libs/langchain/tests/unit_tests/document_loaders/test_confluence.py

@@ -3,6 +3,7 @@ from typing import Dict
 from unittest.mock import MagicMock, patch
 
 import pytest
+import requests
 
 from langchain.docstore.document import Document
 from langchain.document_loaders.confluence import ConfluenceLoader
@@ -23,7 +24,7 @@ class TestConfluenceLoader:
 
     def test_confluence_loader_initialization(self, mock_confluence: MagicMock) -> None:
         ConfluenceLoader(
-            url=self.CONFLUENCE_URL,
+            self.CONFLUENCE_URL,
             username=self.MOCK_USERNAME,
             api_key=self.MOCK_API_TOKEN,
         )
@@ -34,6 +35,36 @@ class TestConfluenceLoader:
             cloud=True,
         )
 
+    def test_confluence_loader_initialization_invalid(self) -> None:
+        with pytest.raises(ValueError):
+            ConfluenceLoader(
+                self.CONFLUENCE_URL,
+                username=self.MOCK_USERNAME,
+                api_key=self.MOCK_API_TOKEN,
+                token="foo",
+            )
+
+        with pytest.raises(ValueError):
+            ConfluenceLoader(
+                self.CONFLUENCE_URL,
+                username=self.MOCK_USERNAME,
+                api_key=self.MOCK_API_TOKEN,
+                oauth2={
+                    "access_token": "bar",
+                    "access_token_secret": "bar",
+                    "consumer_key": "bar",
+                    "key_cert": "bar",
+                },
+            )
+
+        with pytest.raises(ValueError):
+            ConfluenceLoader(
+                self.CONFLUENCE_URL,
+                username=self.MOCK_USERNAME,
+                api_key=self.MOCK_API_TOKEN,
+                session=requests.Session(),
+            )
+
     def test_confluence_loader_initialization_from_env(
         self, mock_confluence: MagicMock
     ) -> None:
@@ -51,7 +82,7 @@ class TestConfluenceLoader:
 
     def test_confluence_loader_load_data_invalid_args(self) -> None:
         confluence_loader = ConfluenceLoader(
-            url=self.CONFLUENCE_URL,
+            self.CONFLUENCE_URL,
             username=self.MOCK_USERNAME,
             api_key=self.MOCK_API_TOKEN,
         )
@@ -125,7 +156,7 @@ class TestConfluenceLoader:
         self, mock_confluence: MagicMock
     ) -> ConfluenceLoader:
         confluence_loader = ConfluenceLoader(
-            url=self.CONFLUENCE_URL,
+            self.CONFLUENCE_URL,
             username=self.MOCK_USERNAME,
             api_key=self.MOCK_API_TOKEN,
         )