Add shared modules

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

pyproject.toml

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+[project]
+name = "synnax-shared"
+version = "0.0.0"
+description = "Synnax shared Python pacakges"
+readme = "README.md"
+requires-python = ">=3.8"
+
+dependencies = []
+
+[project.optional-dependencies]
+system-token-issuer = ["boto3", "boto3-stubs[lambda]", "PyJWT"]
+http-bearer-token-client = ['requests']
+all = ["synnax-shared[system-token-issuer,http-bearer-token-client]"]

src/synnax_shared/http_bearer_token_client.py

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+from typing import Callable, Dict
+
+import requests
+
+
+class HttpBearerTokenClient:
+    def __init__(self, api_url: str, token_provider: Callable[[], str]):
+        self.api_url = api_url
+        self.token_provider = token_provider
+        self.session = requests.Session()
+
+    def post(self, endpoint: str, request_body: Dict) -> Dict:
+        response = self.session.post(
+            self.api_url + endpoint,
+            json=request_body,
+            headers={"Authorization": "Bearer " + self.token_provider()},
+        )
+        return response.json()

src/synnax_shared/system_token_issuer.py

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+import json
+import logging
+import time
+from typing import Dict, List
+
+import jwt
+from mypy_boto3_lambda import LambdaClient
+
+logger = logging.getLogger()
+
+
+class SystemTokenIssuer:
+    def __init__(
+        self,
+        lambda_client: LambdaClient,
+        function_name: str,
+        system_id: str,
+        permissions: List[Dict[str, str | List[str]]],
+        refresh_before_expiry_seconds: int,
+    ):
+        self.lambda_client = lambda_client
+        self.function_name = function_name
+        self.system_id = system_id
+        self.permissions = permissions
+        self.refresh_before_expiry_seconds = refresh_before_expiry_seconds
+        self.token = None
+
+    def get_token(self) -> str:
+        if self.token is None:
+            self.refresh_token()
+
+        if self.is_token_expiring():
+            self.refresh_token()
+
+        return self.token
+
+    def refresh_token(self) -> None:
+        logging.info("Refreshing token")
+        response = self.lambda_client.invoke(
+            FunctionName=self.function_name,
+            InvocationType="RequestResponse",
+            Payload=json.dumps(
+                {"systemId": self.system_id, "permissions": self.permissions}
+            ),
+        )
+        payload = json.loads(response["Payload"].read())
+        self.token = payload["token"]
+
+    def is_token_expiring(self) -> bool:
+        payload = jwt.decode(self.token, options={"verify_signature": False})
+        epoch_time = int(time.time())
+        if payload["exp"] - epoch_time < self.refresh_before_expiry_seconds:
+            return True
+        return False