57 lines
1.8 KiB
Python
57 lines
1.8 KiB
Python
"""
|
|
Validating highly nested schemas shouldn't cause exponential time blowups.
|
|
|
|
See https://github.com/python-jsonschema/jsonschema/issues/1097.
|
|
"""
|
|
from itertools import cycle
|
|
|
|
from jsonschema.validators import validator_for
|
|
|
|
metaschemaish = {
|
|
"$id": "https://example.com/draft/2020-12/schema/strict",
|
|
"$schema": "https://json-schema.org/draft/2020-12/schema",
|
|
|
|
"$vocabulary": {
|
|
"https://json-schema.org/draft/2020-12/vocab/core": True,
|
|
"https://json-schema.org/draft/2020-12/vocab/applicator": True,
|
|
"https://json-schema.org/draft/2020-12/vocab/unevaluated": True,
|
|
"https://json-schema.org/draft/2020-12/vocab/validation": True,
|
|
"https://json-schema.org/draft/2020-12/vocab/meta-data": True,
|
|
"https://json-schema.org/draft/2020-12/vocab/format-annotation": True,
|
|
"https://json-schema.org/draft/2020-12/vocab/content": True,
|
|
},
|
|
"$dynamicAnchor": "meta",
|
|
|
|
"$ref": "https://json-schema.org/draft/2020-12/schema",
|
|
"unevaluatedProperties": False,
|
|
}
|
|
|
|
|
|
def nested_schema(levels):
|
|
"""
|
|
Produce a schema which validates deeply nested objects and arrays.
|
|
"""
|
|
|
|
names = cycle(["foo", "bar", "baz", "quux", "spam", "eggs"])
|
|
schema = {"type": "object", "properties": {"ham": {"type": "string"}}}
|
|
for _, name in zip(range(levels - 1), names):
|
|
schema = {"type": "object", "properties": {name: schema}}
|
|
return schema
|
|
|
|
|
|
validator = validator_for(metaschemaish)(metaschemaish)
|
|
|
|
if __name__ == "__main__":
|
|
from pyperf import Runner
|
|
runner = Runner()
|
|
|
|
not_nested = nested_schema(levels=1)
|
|
runner.bench_func("not nested", lambda: validator.is_valid(not_nested))
|
|
|
|
for levels in range(1, 11, 3):
|
|
schema = nested_schema(levels=levels)
|
|
runner.bench_func(
|
|
f"nested * {levels}",
|
|
lambda schema=schema: validator.is_valid(schema),
|
|
)
|