Copilot commented on code in PR #2244:
URL: https://github.com/apache/iceberg-python/pull/2244#discussion_r2232233082
##########
pyiceberg/catalog/rest/auth.py:
##########
@@ -119,6 +122,95 @@ def auth_header(self) -> str:
return f"Bearer {self._token}"
+class OAuth2TokenProvider:
+ """Thread-safe OAuth2 token provider with token refresh support."""
+
+ client_id: str
+ client_secret: str
+ token_url: str
+ scope: Optional[str]
+ refresh_margin: int
+ expires_in: Optional[int]
+
+ _token: Optional[str]
+ _expires_at: int
+ _lock: threading.Lock
+
+ def __init__(
+ self,
+ client_id: str,
+ client_secret: str,
+ token_url: str,
+ scope: Optional[str] = None,
+ refresh_margin: int = 60,
+ expires_in: Optional[int] = None,
+ ):
+ self.client_id = client_id
+ self.client_secret = client_secret
+ self.token_url = token_url
+ self.scope = scope
+ self.refresh_margin = refresh_margin
+ self.expires_in = expires_in
+
+ self._token = None
+ self._expires_at = 0
+ self._lock = threading.Lock()
+
+ def _refresh_token(self) -> None:
+ data = {
+ "grant_type": "client_credentials",
+ "client_id": self.client_id,
+ "client_secret": self.client_secret,
+ }
+ if self.scope:
+ data["scope"] = self.scope
+
+ response = requests.post(self.token_url, data=data)
+ response.raise_for_status()
+ result = response.json()
+
+ self._token = result["access_token"]
+ expires_in = result.get("expires_in", self.expires_in)
+ if expires_in is None:
+ raise ValueError(
+ "The expiration time of the Token must be provided by the
Server in the Access Token Response in `expired_in` field, or by the PyIceberg
Client."
Review Comment:
There is a typo in the error message: 'expired_in' should be 'expires_in' to
match the actual field name used in the OAuth2 specification.
```suggestion
"The expiration time of the Token must be provided by the
Server in the Access Token Response in `expires_in` field, or by the PyIceberg
Client."
```
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