Create token auth option (#991)

* Added quick token_auth to client

* Create TokenAuth class and properly implement token authorization

* add test for bearer token auth

Co-authored-by: Anna Przybycień <aprzybycien@atlassian.com>
Co-authored-by: adehad <26027314+adehad@users.noreply.github.com>
Co-authored-by: Alex Metzger <asm@asm.io>

jira/client.py

@@ -264,6 +264,19 @@ def start_session(self):
         self._get_session(self.__auth)
 
 
+class TokenAuth(AuthBase):
+    """Bearer Token Authentication"""
+
+    def __init__(self, token: str):
+        # setup any auth-related data here
+        self._token = token
+
+    def __call__(self, r: requests.PreparedRequest):
+        # modify and return the request
+        r.headers["authorization"] = f"Bearer {self._token}"
+        return r
+
+
 class JIRA:
     """User interface to Jira.
 
@@ -325,7 +338,8 @@ def __init__(
         self,
         server: str = None,
         options: Dict[str, Union[str, bool, Any]] = None,
-        basic_auth: Union[None, Tuple[str, str]] = None,
+        basic_auth: Optional[Tuple[str, str]] = None,
+        token_auth: Optional[str] = None,
         oauth: Dict[str, Any] = None,
         jwt: Dict[str, Any] = None,
         kerberos=False,
@@ -347,8 +361,8 @@ def __init__(
         or ``atlas-run-standalone`` commands. By default, this instance runs at
         ``http://localhost:2990/jira``. The ``options`` argument can be used to set the Jira instance to use.
 
-        Authentication is handled with the ``basic_auth`` argument. If authentication is supplied (and is
-        accepted by Jira), the client will remember it for subsequent requests.
+        Authentication is handled with the ``basic_auth``  or ``token_auth`` argument.
+        If authentication is supplied (and is accepted by Jira), the client will remember it for subsequent requests.
 
         For quick command line access to a server, see the ``jirashell`` script included with this distribution.
 
@@ -369,8 +383,11 @@ def __init__(
                 * check_update -- Check whether using the newest python-jira library version.
                 * headers -- a dict to update the default headers the session uses for all API requests.
 
-            basic_auth (Union[None, Tuple[str, str]]): A tuple of username and password to use when
+            basic_auth (Optional[Tuple[str, str]]): A tuple of username and password to use when
               establishing a session via HTTP BASIC authentication.
+
+            token_auth (Optional[str]): A string containing the token necessary for (PAT) bearer token authorization.
+
             oauth (Optional[Any]): A dict of properties for OAuth authentication. The following properties are required:
 
                 * access_token -- OAuth access token for the user
@@ -466,6 +483,8 @@ def __init__(
             self._session.headers.update(self._options["headers"])
         elif jwt:
             self._create_jwt_session(jwt, timeout)
+        elif token_auth:
+            self._create_token_session(token_auth, timeout)
         elif kerberos:
             self._create_kerberos_session(timeout, kerberos_options=kerberos_options)
         elif auth:
@@ -3412,6 +3431,20 @@ def _create_jwt_session(
         self._session.verify = bool(self._options["verify"])
         self._session.auth = jwt_auth
 
+    def _create_token_session(
+        self,
+        token_auth: str,
+        timeout: Optional[Union[Union[float, int], Tuple[float, float]]],
+    ):
+        """
+        Creates token-based session.
+        Header structure: "authorization": "Bearer <token_auth>"
+        """
+        verify = self._options["verify"]
+        self._session = ResilientSession(timeout=timeout)
+        self._session.verify = verify
+        self._session.auth = TokenAuth(token_auth)
+
     def _set_avatar(self, params, url, avatar):
         data = {"id": avatar}
         return self._session.put(url, params=params, data=json.dumps(data))

tests/test_client.py

@@ -16,17 +16,17 @@ def prep():
 
 
 @pytest.fixture(scope="module")
-def test_manager():
+def test_manager() -> JiraTestManager:
     return JiraTestManager()
 
 
 @pytest.fixture()
-def cl_admin(test_manager):
+def cl_admin(test_manager: JiraTestManager) -> jira.client.JIRA:
     return test_manager.jira_admin
 
 
 @pytest.fixture()
-def cl_normal(test_manager):
+def cl_normal(test_manager: JiraTestManager) -> jira.client.JIRA:
     return test_manager.jira_normal
 
 
@@ -194,3 +194,24 @@ def test_headers_unclobbered_update_with_no_provided_headers(no_fields):
 
     # THEN: we have not affected the other headers' defaults
     assert session_headers[invariant_header_name] == invariant_header_value
+
+
+def test_token_auth(cl_admin: jira.client.JIRA):
+    """Tests the Personal Access Token authentication works."""
+    # GIVEN: We have a PAT token created by a user.
+    pat_token_request = {
+        "name": "my_new_token",
+        "expirationDuration": 1,
+    }
+    base_url = cl_admin.server_url
+    pat_token_response = cl_admin._session.post(
+        f"{base_url}/rest/pat/latest/tokens", json=pat_token_request
+    ).json()
+    new_token = pat_token_response["rawToken"]
+
+    # WHEN: A new client is authenticated with this token
+    new_jira_client = jira.client.JIRA(token_auth=new_token)
+
+    # THEN: The reported authenticated user of the token
+    # matches the original token creator user.
+    assert cl_admin.myself() == new_jira_client.myself()