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Cookwala / SDK y escenarios / 025

A recipe target outside its operation's envelope is invalid whatever the readings

A recipe may narrow an envelope, never widen it. A simmer at 100 degC, a deep fry at 195 degC or a bake at 110 degC fail before a single reading is looked at.

Audiencia: recipe publisher · Objetivo: Hacer que las personas estén más sanas, Robots para las personas · Nivel: beginner

Leer primero: /docs/CORE/ /docs/QUICKSTART/

Pasos

Simmer with a target of 100 plus or minus 2: 100 is a boil. checkEnvelope
Deep fry at 195 degC: above the 190 ceiling of the band. checkEnvelope
Bake at 110 degC: below the 120 floor. checkEnvelope
The corrected simmer target, 94 plus or minus 3, passes with the same kind of trace. checkEnvelope

Resultado

You know the rule the validator applies to every recipe: targets live inside envelopes. A publisher fixes the recipe; a device never stretches the band. Next: scenario 026 walks a ladder rung by rung.

Línea de comandos

printf '[{"t": 0, "tempC": 90}]' > trace.json && cookwala envelope cw.op.simmer trace.json --target 100 --tolerance 2
printf '[{"t": 0, "tempC": 170}]' > trace.json && cookwala envelope cw.op.deep_fry trace.json --target 195 --tolerance 5
cookwala validate   # the repository validator applies the same rule to every recipe target

Salida grabada

Estado: ok

[1] checkEnvelope: {"envelopeOk": false, "targetOk": false, "reason": "target_outside_envelope"}
[2] checkEnvelope: {"envelopeOk": false, "targetOk": false, "reason": "target_outside_envelope"}
[3] checkEnvelope: {"envelopeOk": false, "targetOk": false, "reason": "target_outside_envelope"}
[4] checkEnvelope: {"envelopeOk": true, "targetOk": true, "reason": "ok"}

Código

Ejecutar: python scenarios/out/025-target-outside-envelope/python.py

# Scenario 025: A recipe target outside its operation's envelope is invalid whatever the readings
# A recipe may narrow an envelope, never widen it. A simmer at 100 degC, a deep fry at 195 degC or a bake at 110 degC fail before a single reading is looked at.
# Run a hub first: python hub/cookwala_hub.py --recipes examples
import json, os
from cookwala.client import CookwalaClient, CookwalaProblem

def load(path):
    with open(path, encoding="utf-8") as f:
        return json.load(f)

def pick(obj, path):
    for part in path.replace("]", "").replace("[", ".").split("."):
        obj = obj[int(part)] if part.isdigit() else (len(obj) if part == "length" else obj.get(part))
    return obj

c = CookwalaClient(os.environ.get("COOKWALA_HUB", "http://localhost:7878"))


# Step 1: Simmer with a target of 100 plus or minus 2: 100 is a boil.
simmer = c.check_envelope("cw.op.simmer", [{"t": 0, "tempC": 90}], {"value": 100, "tolerance": 2})
assert pick(simmer, "envelopeOk") == False, pick(simmer, "envelopeOk")
print("ok", "envelopeOk", "=", False)
assert pick(simmer, "targetOk") == False, pick(simmer, "targetOk")
print("ok", "targetOk", "=", False)
assert pick(simmer, "reason") == "target_outside_envelope", pick(simmer, "reason")
print("ok", "reason", "=", "target_outside_envelope")

# Step 2: Deep fry at 195 degC: above the 190 ceiling of the band.
fry = c.check_envelope("cw.op.deep_fry", [{"t": 0, "tempC": 170}], {"value": 195, "tolerance": 5})
assert pick(fry, "envelopeOk") == False, pick(fry, "envelopeOk")
print("ok", "envelopeOk", "=", False)
assert pick(fry, "targetOk") == False, pick(fry, "targetOk")
print("ok", "targetOk", "=", False)
assert pick(fry, "reason") == "target_outside_envelope", pick(fry, "reason")
print("ok", "reason", "=", "target_outside_envelope")

# Step 3: Bake at 110 degC: below the 120 floor.
bake = c.check_envelope("cw.op.bake", [{"t": 0, "tempC": 200}], {"value": 110, "tolerance": 5})
assert pick(bake, "envelopeOk") == False, pick(bake, "envelopeOk")
print("ok", "envelopeOk", "=", False)
assert pick(bake, "targetOk") == False, pick(bake, "targetOk")
print("ok", "targetOk", "=", False)
assert pick(bake, "reason") == "target_outside_envelope", pick(bake, "reason")
print("ok", "reason", "=", "target_outside_envelope")

# Step 4: The corrected simmer target, 94 plus or minus 3, passes with the same kind of trace.
fixed = c.check_envelope("cw.op.simmer", [{"t": 0, "tempC": 90}, {"t": 30, "tempC": 94}], {"value": 94, "tolerance": 3})
assert pick(fixed, "envelopeOk") == True, pick(fixed, "envelopeOk")
print("ok", "envelopeOk", "=", True)
assert pick(fixed, "targetOk") == True, pick(fixed, "targetOk")
print("ok", "targetOk", "=", True)
assert pick(fixed, "reason") == "ok", pick(fixed, "reason")
print("ok", "reason", "=", "ok")

print("scenario complete")

scenarios/025-target-outside-envelope.json