[Transition PyPIConGPU to pydantic] Proof-of-concept II: Remove schemata

lib/python/picongpu/pypicongpu/grid.py

@@ -8,7 +8,7 @@
 import enum
 from typing import Annotated
 
-from pydantic import BaseModel, Field, PlainSerializer, model_validator
+from pydantic import AfterValidator, BaseModel, Field, PlainSerializer, model_validator
 from typing_extensions import Self
 
 from .rendering import RenderedObject
@@ -59,6 +59,21 @@ def serialise_grid_dist(value):
     )
 
 
+def all_gt(iterable, m):
+    if all(correct := [x > m for x in iterable]):
+        return iterable
+    else:
+        message = f"{iterable=} contains values <= {m=} while all should be greater than m. Valid are the following: {correct=}."
+        raise ValueError(message)
+
+
+def grid_dist_validate(grid_dist):
+    if grid_dist is None:
+        return None
+    if all_gt(sum(grid_dist, []), 0):
+        return grid_dist
+
+
 class Grid3D(BaseModel, RenderedObject):
     """
     PIConGPU 3 dimensional (cartesian) grid
@@ -68,10 +83,10 @@ class Grid3D(BaseModel, RenderedObject):
     The bounding box is implicitly given as TODO.
     """
 
-    cell_size: Vec3_float = Field(alias="cell_size_si")
+    cell_size: Annotated[Vec3_float, AfterValidator(lambda x: all_gt(x, 0))] = Field(alias="cell_size_si")
     """Width of individual cell in each direction"""
 
-    cell_cnt: Vec3_int
+    cell_cnt: Annotated[Vec3_int, AfterValidator(lambda x: all_gt(x, 0))]
     """total number of cells in each direction"""
 
     boundary_condition: Annotated[
@@ -80,10 +95,14 @@ class Grid3D(BaseModel, RenderedObject):
     ]
     """behavior towards particles crossing each boundary"""
 
-    gpu_cnt: Vec3_int = Field((1, 1, 1), alias="n_gpus")
+    gpu_cnt: Annotated[Vec3_int, AfterValidator(lambda x: all_gt(x, 0))] = Field((1, 1, 1), alias="n_gpus")
     """number of GPUs in x y and z direction as 3-integer tuple"""
 
-    grid_dist: Annotated[tuple[list[int], list[int], list[int]] | None, PlainSerializer(serialise_grid_dist)] = None
+    grid_dist: Annotated[
+        tuple[list[int], list[int], list[int]] | None,
+        PlainSerializer(serialise_grid_dist),
+        AfterValidator(grid_dist_validate),
+    ] = None
     """distribution of grid cells to GPUs for each axis"""
 
     super_cell_size: Vec3_int
@@ -92,8 +111,6 @@ class Grid3D(BaseModel, RenderedObject):
     @model_validator(mode="after")
     def check(self) -> Self:
         """serialized representation provided for RenderedObject"""
-        assert all(x > 0 for x in self.cell_cnt), "cell_cnt must be greater than 0"
-        assert all(x > 0 for x in self.gpu_cnt), "all n_gpus entries must be greater than 0"
         if self.grid_dist is not None:
             assert sum(self.grid_dist[0]) == self.cell_cnt[0], "sum of grid_dists in x must be equal to number_of_cells"
             assert sum(self.grid_dist[1]) == self.cell_cnt[1], "sum of grid_dists in y must be equal to number_of_cells"

lib/python/picongpu/pypicongpu/rendering/renderedobject.py

@@ -165,7 +165,12 @@ def _get_schema_from_class(class_type: type) -> typing.Any:
         try:
             schema = RenderedObject._registry.contents(uri)
         except referencing.exceptions.NoSuchResource:
-            raise referencing.exceptions.NoSuchResource("schema not found for FQN {}: URI {}".format(fqn, uri))
+            try:
+                schema = class_type.model_json_schema(mode="serialization", by_alias=False) | {"$id": uri}
+            except Exception as second_error:
+                raise referencing.exceptions.NoSuchResource(
+                    "schema not found for FQN {}: URI {}".format(fqn, uri)
+                ) from second_error
 
         # validate schema
         validator = jsonschema.Draft202012Validator(schema=schema)

share/picongpu/pypicongpu/schema/output/auto.Auto.json

@@ -8,9 +8,7 @@
     "png_axis"
   ],
   "properties": {
-    "period": {
-      "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.output.timestepspec.TimeStepSpec"
-    },
+    "period": {},
     "png_axis": {
       "description": "axis pairs (i.e. planes) for which to generate png output",
       "type": "array",

share/picongpu/pypicongpu/schema/output/binning.Binning.json

@@ -31,13 +31,7 @@
       },
       "description": "Species to bin"
     },
-    "period": {
-      "type": [
-        "object"
-      ],
-      "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.output.timestepspec.TimeStepSpec",
-      "description": "Create binning output on specified steps"
-    },
+    "period": {},
     "openPMD": {
       "type": [
         "string",

share/picongpu/pypicongpu/schema/output/checkpoint.Checkpoint.json

@@ -16,14 +16,7 @@
     }
   ],
   "properties": {
-    "period": {
-      "type": [
-        "object",
-        "null"
-      ],
-      "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.output.timestepspec.TimeStepSpec",
-      "description": "Create checkpoints in specified steps"
-    },
+    "period": {},
     "timePeriod": {
       "type": [
         "integer",

share/picongpu/pypicongpu/schema/output/energy_histogram.EnergyHistogram.json

@@ -14,9 +14,7 @@
     "species": {
       "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.species.species.Species"
     },
-    "period": {
-      "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.output.timestepspec.TimeStepSpec"
-    },
+    "period": {},
     "bin_count": {
       "type": "integer",
       "minimum": 1,

share/picongpu/pypicongpu/schema/output/macro_particle_count.MacroParticleCount.json

@@ -11,8 +11,6 @@
     "species": {
       "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.species.species.Species"
     },
-    "period": {
-      "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.output.timestepspec.TimeStepSpec"
-    }
+    "period": {}
   }
 }

share/picongpu/pypicongpu/schema/output/phase_space.PhaseSpace.json

@@ -15,9 +15,7 @@
     "species": {
       "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.species.species.Species"
     },
-    "period": {
-      "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.output.timestepspec.TimeStepSpec"
-    },
+    "period": {},
     "spatial_coordinate": {
       "type": "string",
       "enum": [

share/picongpu/pypicongpu/schema/output/png.Png.json

@@ -29,9 +29,7 @@
     "preChannel3"
   ],
   "properties": {
-    "period": {
-      "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.output.timestepspec.TimeStepSpec"
-    },
+    "period": {},
     "axis": {
       "type": "string",
       "description": "2D plane for PNG output (e.g., 'yx')."

share/picongpu/pypicongpu/schema/simulation.Simulation.json

@@ -31,9 +31,7 @@
         }
       ]
     },
-    "grid": {
-      "$ref": "https://registry.hzdr.de/crp/picongpu/schema/picongpu.pypicongpu.grid.Grid3D"
-    },
+    "grid": {},
     "laser": {
       "anyOf": [
         {