Support SET SESSION AUTHORIZATION on trino-python-client

Author: baohe-zhang

tests/unit/test_client.py

@@ -90,6 +90,7 @@ def test_request_headers(mock_get_and_post):
     catalog = "test_catalog"
     schema = "test_schema"
     user = "test_user"
+    authorization_user = "test_authorization_user"
     source = "test_source"
     timezone = "Europe/Brussels"
     accept_encoding_header = "accept-encoding"
@@ -103,6 +104,7 @@ def test_request_headers(mock_get_and_post):
             port=8080,
             client_session=ClientSession(
                 user=user,
+                authorization_user=authorization_user,
                 source=source,
                 catalog=catalog,
                 schema=schema,
@@ -127,6 +129,7 @@ def assert_headers(headers):
         assert headers[constants.HEADER_SCHEMA] == schema
         assert headers[constants.HEADER_SOURCE] == source
         assert headers[constants.HEADER_USER] == user
+        assert headers[constants.HEADER_AUTHORIZATION_USER] == authorization_user
         assert headers[constants.HEADER_SESSION] == ""
         assert headers[constants.HEADER_TRANSACTION] is None
         assert headers[constants.HEADER_TIMEZONE] == timezone
@@ -140,7 +143,7 @@ def assert_headers(headers):
             "catalog2=" + urllib.parse.quote("ROLE{catalog2_role}")
         )
         assert headers["User-Agent"] == f"{constants.CLIENT_NAME}/{__version__}"
-        assert len(headers.keys()) == 12
+        assert len(headers.keys()) == 13
 
     req.post("URL")
     _, post_kwargs = post.call_args

trino/client.py

@@ -82,6 +82,8 @@ class ClientSession(object):
 
     :param user: associated with the query. It is useful for access control
                  and query scheduling.
+    :param authorization_user: associated with the query. It is useful for access control
+                               and query scheduling.
     :param source: associated with the query. It is useful for access
                    control and query scheduling.
     :param catalog: to query. The *catalog* is associated with a Trino
@@ -113,6 +115,7 @@ class ClientSession(object):
     def __init__(
         self,
         user: str,
+        authorization_user: str = None,
         catalog: str = None,
         schema: str = None,
         source: str = None,
@@ -125,6 +128,7 @@ def __init__(
         timezone: str = None,
     ):
         self._user = user
+        self._authorization_user = authorization_user
         self._catalog = catalog
         self._schema = schema
         self._source = source
@@ -144,6 +148,16 @@ def __init__(
     def user(self):
         return self._user
 
+    @property
+    def authorization_user(self):
+        with self._object_lock:
+            return self._authorization_user
+
+    @authorization_user.setter
+    def authorization_user(self, authorization_user):
+        with self._object_lock:
+            self._authorization_user = authorization_user
+
     @property
     def catalog(self):
         with self._object_lock:
@@ -441,6 +455,7 @@ def http_headers(self) -> Dict[str, str]:
         headers[constants.HEADER_SCHEMA] = self._client_session.schema
         headers[constants.HEADER_SOURCE] = self._client_session.source
         headers[constants.HEADER_USER] = self._client_session.user
+        headers[constants.HEADER_AUTHORIZATION_USER] = self._client_session.authorization_user
         headers[constants.HEADER_TIMEZONE] = self._client_session.timezone
         headers[constants.HEADER_CLIENT_CAPABILITIES] = 'PARAMETRIC_DATETIME'
         headers["user-agent"] = f"{constants.CLIENT_NAME}/{__version__}"
@@ -630,6 +645,12 @@ def process(self, http_response) -> TrinoStatus:
             ):
                 self._client_session.prepared_statements.pop(name, None)
 
+        if constants.HEADER_SET_AUTHORIZATION_USER in http_response.headers:
+            self._client_session.authorization_user = http_response.headers[constants.HEADER_SET_AUTHORIZATION_USER]
+
+        if constants.HEADER_RESET_AUTHORIZATION_USER in http_response.headers:
+            self._client_session.authorization_user = None
+
         self._next_uri = response.get("nextUri")
 
         data = response.get("data") if response.get("data") else []

trino/constants.py

@@ -56,6 +56,10 @@
 
 HEADER_CLIENT_CAPABILITIES = "X-Trino-Client-Capabilities"
 
+HEADER_AUTHORIZATION_USER = "X-Trino-Authorization-User"
+HEADER_SET_AUTHORIZATION_USER = "X-Trino-Set-Authorization-User"
+HEADER_RESET_AUTHORIZATION_USER = "X-Trino-Reset-Authorization-User"
+
 LENGTH_TYPES = ["char", "varchar"]
 PRECISION_TYPES = ["time", "time with time zone", "timestamp", "timestamp with time zone", "decimal"]
 SCALE_TYPES = ["decimal"]