fix(_retry): add RESOURCE_EXHAUSTED to default retryable codes (#96)

Rate-limited reads are rejected (not applied) so retrying is safe.
Adds RESOURCE_EXHAUSTED alongside UNAVAILABLE and DEADLINE_EXCEEDED in
the default retryable_codes tuple. Updates test_retry_config_defaults
and adds test_retry_on_resource_exhausted.


Closes #59

Co-authored-by: Claude <noreply@anthropic.com>

Author: zeevdr

sdk/src/opendecree/_retry.py

@@ -42,6 +42,7 @@ class RetryConfig:
         default=(
             grpc.StatusCode.UNAVAILABLE,
             grpc.StatusCode.DEADLINE_EXCEEDED,
+            grpc.StatusCode.RESOURCE_EXHAUSTED,
         )
     )
     total_timeout: float | None = None

sdk/tests/test_retry.py

@@ -64,6 +64,18 @@ def test_retry_config_defaults():
     assert cfg.multiplier == 2.0
     assert grpc.StatusCode.UNAVAILABLE in cfg.retryable_codes
     assert grpc.StatusCode.DEADLINE_EXCEEDED in cfg.retryable_codes
+    assert grpc.StatusCode.RESOURCE_EXHAUSTED in cfg.retryable_codes
+
+
+def test_retry_on_resource_exhausted():
+    err = FakeRpcError(grpc.StatusCode.RESOURCE_EXHAUSTED)
+    fn = MagicMock(side_effect=[err, "ok"])
+
+    with patch("opendecree._retry.time.sleep"):
+        result = with_retry(RetryConfig(max_attempts=3), fn)
+
+    assert result == "ok"
+    assert fn.call_count == 2
 
 
 def test_write_safe_config_strips_deadline_exceeded():