Add test_custom_op.py to expose RecursionError bug.

tests/integration/subchunkable/test_custom_op.py

@@ -0,0 +1,67 @@
+# This file triggers a RecursionError inside id_generation.py.
+
+from typing import Sequence
+
+import attrs
+
+import zetta_utils
+import zetta_utils.mazepa_layer_processing.common
+from zetta_utils import builder, mazepa
+from zetta_utils.geometry import Vec3D
+from zetta_utils.layer.volumetric import VolumetricIndex, VolumetricLayer
+from zetta_utils.tensor_ops import convert
+
+
+@builder.register("CustomVolOp")
+@mazepa.taskable_operation_cls
+@attrs.frozen()
+class CustomVolOp:  # implements VolumetricOpProtocol
+    crop_pad: Sequence[int] = (0, 0, 0)
+    threshold: float = 0.1
+    connectivity: int = 6
+    ids_per_chunk: int = 10000
+
+    def get_input_resolution(self, dst_resolution: Vec3D) -> Vec3D:  # pylint: disable=no-self-use
+        # For simplicity, just return the destination resolution
+        return dst_resolution
+
+    def with_added_crop_pad(self, crop_pad: Vec3D[int]) -> "CustomVolOp":
+        return attrs.evolve(self, crop_pad=Vec3D[int](*self.crop_pad) + crop_pad)
+
+    def __call__(
+        self, idx: VolumetricIndex, dst: VolumetricLayer, src: VolumetricLayer, *args, **kwargs
+    ):
+        # If the following line is commented out, the problem does not occur:
+        data_np = convert.to_np(src[idx][0])  # (use channel 0) # pylint: disable=unused-variable
+
+
+d = {
+    "@type": "build_subchunkable_apply_flow",
+    "bbox": {
+        "@type": "BBox3D.from_coords",
+        "start_coord": [13996, 10633, 3062],
+        "end_coord": [14124, 10761, 3102],
+        "resolution": [16, 16, 42],
+    },
+    "dst_resolution": [16, 16, 42],
+    "processing_chunk_sizes": [[128, 128, 40]],
+    "skip_intermediaries": True,
+    "expand_bbox_processing": True,
+    "op": {"@type": "CustomVolOp"},
+    "op_kwargs": {
+        "src": {
+            "@type": "build_cv_layer",
+            "path": "gs://dkronauer-ant-001-synapse/test/syndet20240802",
+        }
+    },
+    "dst": {
+        "@type": "build_cv_layer",
+        "path": "gs://dkronauer-ant-001-synapse/test/synseg20240802",
+        "info_reference_path": "gs://dkronauer-ant-001-synapse/test/syndet20240802",
+        "on_info_exists": "overwrite",
+        "info_field_overrides": {"num_channels": 1, "data_type": "int32"},
+        "info_add_scales": [[16, 16, 42]],
+        "info_add_scales_mode": "replace",
+    },
+}
+flow = zetta_utils.builder.build(d)