Copy openapi config object before modifying it

pinecone/config/config.py

@@ -1,5 +1,6 @@
 from typing import NamedTuple, Optional, Dict
 import os
+import copy
 
 from pinecone.exceptions import PineconeConfigurationError
 from pinecone.config.openapi import OpenApiConfigFactory
@@ -47,6 +48,7 @@ def build(
             raise PineconeConfigurationError("You haven't specified a host.")
 
         if openapi_config:
+            openapi_config = copy.deepcopy(openapi_config)
             openapi_config.host = host
             openapi_config.api_key = {"ApiKeyAuth": api_key}
         else:

tests/unit/test_config.py

@@ -106,4 +106,23 @@ def test_ssl_config_passed_to_index_client(self):
 
         idx = pc.Index(host='host')
         assert idx._vector_api.api_client.configuration.ssl_ca_cert == 'path/to/cert'
-        assert idx._vector_api.api_client.configuration.proxy_headers == proxy_headers
+        assert idx._vector_api.api_client.configuration.proxy_headers == proxy_headers
+
+    def test_host_config_not_clobbered_by_index(self):
+        oai_config = OpenApiConfiguration()
+        oai_config.ssl_ca_cert = 'path/to/cert'
+        proxy_headers = make_headers(proxy_basic_auth='asdf')
+        oai_config.proxy_headers = proxy_headers
+
+        pc = Pinecone(api_key='key', openapi_config=oai_config)
+
+        assert pc.config.openapi_config.ssl_ca_cert == 'path/to/cert'
+        assert pc.config.openapi_config.proxy_headers == proxy_headers
+        assert pc.config.openapi_config.host == 'https://api.pinecone.io'
+
+        idx = pc.Index(host='host')
+        assert idx._vector_api.api_client.configuration.ssl_ca_cert == 'path/to/cert'
+        assert idx._vector_api.api_client.configuration.proxy_headers == proxy_headers
+        assert idx._vector_api.api_client.configuration.host == 'https://host'
+
+        assert pc.config.openapi_config.host == 'https://api.pinecone.io'