bin/ci: Move get_token_from_default_dir to common

Moved the `get_token_from_default_dir` method to a common module for
shared use between `gitlab_gql.py` and `ci_run_n_monitor.py`. This
migration facilitates better code organization and potential future
reuse.

Signed-off-by: Guilherme Gallo <guilherme.gallo@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27206>

bin/ci/gitlab_common.py

@@ -3,16 +3,17 @@
 # Authors:
 #   Tomeu Vizoso <tomeu.vizoso@collabora.com>
 #   David Heidelberg <david.heidelberg@collabora.com>
+#   Guilherme Gallo <guilherme.gallo@collabora.com>
 #
 # SPDX-License-Identifier: MIT
 '''Shared functions between the scripts.'''
 
 import os
 import time
-from typing import Optional
+from pathlib import Path
-
 
 GITLAB_URL = "https://gitlab.freedesktop.org"
+TOKEN_DIR = Path(os.getenv("XDG_CONFIG_HOME") or Path.home() / ".config")
 
 
 def pretty_duration(seconds):
@@ -50,6 +51,26 @@ def get_gitlab_project(glab, name: str):
     return glab.projects.get(project_path)
 
 
+def get_token_from_default_dir() -> str:
+    """
+    Retrieves the GitLab token from the default directory.
+
+    Returns:
+        str: The path to the GitLab token file.
+
+    Raises:
+        FileNotFoundError: If the token file is not found.
+    """
+    token_file = TOKEN_DIR / "gitlab-token"
+    try:
+        return str(token_file.resolve())
+    except FileNotFoundError as ex:
+        print(
+            f"Could not find {token_file}, please provide a token file as an argument"
+        )
+        raise ex
+
+
 def read_token(token_arg: Optional[str]) -> str:
     """pick token from args or file"""
     if token_arg:

bin/ci/gitlab_gql.py

@@ -9,7 +9,6 @@ from collections import OrderedDict
 from copy import deepcopy
 from dataclasses import dataclass, field
 from itertools import accumulate
-from os import getenv
 from pathlib import Path
 from subprocess import check_output
 from textwrap import dedent
@@ -17,6 +16,7 @@ from typing import Any, Iterable, Optional, Pattern, TypedDict, Union
 
 import yaml
 from filecache import DAY, filecache
+from gitlab_common import get_token_from_default_dir
 from gql import Client, gql
 from gql.transport.requests import RequestsHTTPTransport
 from graphql import DocumentNode
@@ -34,18 +34,6 @@ Dag = dict[str, DagNode]
 
 
 StageSeq = OrderedDict[str, set[str]]
-TOKEN_DIR = Path(getenv("XDG_CONFIG_HOME") or Path.home() / ".config")
-
-
-def get_token_from_default_dir() -> str:
-    token_file = TOKEN_DIR / "gitlab-token"
-    try:
-        return str(token_file.resolve())
-    except FileNotFoundError as ex:
-        print(
-            f"Could not find {token_file}, please provide a token file as an argument"
-        )
-        raise ex
 
 
 def get_project_root_dir():