esphome/script/build_jsonschema.py

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#!/usr/bin/env python3
import json
import argparse
import os
import re
from pathlib import Path
import voluptuous as vol
# NOTE: Cannot import other esphome components globally as a modification in jsonschema
# is needed before modules are loaded
import esphome.jsonschema as ejs
ejs.EnableJsonSchemaCollect = True
DUMP_COMMENTS = False
JSC_ACTION = "automation.ACTION_REGISTRY"
JSC_ALLOF = "allOf"
JSC_ANYOF = "anyOf"
JSC_COMMENT = "$comment"
JSC_CONDITION = "automation.CONDITION_REGISTRY"
JSC_DESCRIPTION = "description"
JSC_ONEOF = "oneOf"
JSC_PROPERTIES = "properties"
JSC_REF = "$ref"
SIMPLE_AUTOMATION = "simple_automation"
schema_names = {}
schema_registry = {}
components = {}
modules = {}
registries = []
pending_refs = []
definitions = {}
base_props = {}
parser = argparse.ArgumentParser()
parser.add_argument(
"--output", default="esphome.json", help="Output filename", type=os.path.abspath
)
args = parser.parse_args()
def get_ref(definition):
return {JSC_REF: "#/definitions/" + definition}
def is_ref(jschema):
return isinstance(jschema, dict) and JSC_REF in jschema
def unref(jschema):
return definitions[jschema[JSC_REF][len("#/definitions/") :]]
def add_definition_array_or_single_object(ref):
return {JSC_ANYOF: [{"type": "array", "items": ref}, ref]}
def add_core():
from esphome.core.config import CONFIG_SCHEMA
base_props["esphome"] = get_jschema("esphome", CONFIG_SCHEMA.schema)
def add_buses():
# uart
from esphome.components.uart import UART_DEVICE_SCHEMA
get_jschema("uart_bus", UART_DEVICE_SCHEMA)
# spi
from esphome.components.spi import spi_device_schema
get_jschema("spi_bus", spi_device_schema(False))
# i2c
from esphome.components.i2c import i2c_device_schema
get_jschema("i2c_bus", i2c_device_schema(None))
def add_registries():
for domain, module in modules.items():
add_module_registries(domain, module)
def add_module_registries(domain, module):
from esphome.util import Registry
for c in dir(module):
m = getattr(module, c)
if isinstance(m, Registry):
add_registry(domain + "." + c, m)
def add_registry(registry_name, registry):
validators = []
registries.append((registry, registry_name))
for name in registry.keys():
schema = get_jschema(str(name), registry[name].schema, create_return_ref=False)
if not schema:
schema = {"type": "string"}
o_schema = {"type": "object", JSC_PROPERTIES: {name: schema}}
validators.append(o_schema)
definitions[registry_name] = {JSC_ANYOF: validators}
def get_registry_ref(registry):
# we don't know yet
ref = {JSC_REF: "pending"}
pending_refs.append((ref, registry))
return ref
def solve_pending_refs():
for ref, registry in pending_refs:
for registry_match, name in registries:
if registry == registry_match:
ref[JSC_REF] = "#/definitions/" + name
def add_module_schemas(name, module):
import esphome.config_validation as cv
for c in dir(module):
v = getattr(module, c)
if isinstance(v, cv.Schema):
get_jschema(name + "." + c, v)
def get_dirs():
from esphome.config import CORE_COMPONENTS_PATH
dir_names = [
d
for d in os.listdir(CORE_COMPONENTS_PATH)
if not d.startswith("__")
and os.path.isdir(os.path.join(CORE_COMPONENTS_PATH, d))
]
return dir_names
def get_logger_tags():
from esphome.config import CORE_COMPONENTS_PATH
import glob
pattern = re.compile(r'^static const char(\*\s|\s\*)TAG = "(\w.*)";', re.MULTILINE)
tags = [
"app",
"component",
"esphal",
"helpers",
"preferences",
"scheduler",
"api.service",
]
for x in os.walk(CORE_COMPONENTS_PATH):
for y in glob.glob(os.path.join(x[0], "*.cpp")):
with open(y, "r") as file:
data = file.read()
match = pattern.search(data)
if match:
tags.append(match.group(2))
return tags
def load_components():
import esphome.config_validation as cv
from esphome.config import get_component
modules["cv"] = cv
from esphome import automation
modules["automation"] = automation
for domain in get_dirs():
components[domain] = get_component(domain)
modules[domain] = components[domain].module
def add_components():
from esphome.config import get_platform
for domain, c in components.items():
if c.is_platform_component:
# this is a platform_component, e.g. binary_sensor
platform_schema = [
{
"type": "object",
"properties": {"platform": {"type": "string"}},
}
]
if domain not in ("output", "display"):
# output bases are either FLOAT or BINARY so don't add common base for this
# display bases are either simple or FULL so don't add common base for this
platform_schema = [
{"$ref": f"#/definitions/{domain}.{domain.upper()}_SCHEMA"}
] + platform_schema
base_props[domain] = {"type": "array", "items": {"allOf": platform_schema}}
add_module_registries(domain, c.module)
add_module_schemas(domain, c.module)
# need first to iterate all platforms then iteate components
# a platform component can have other components as properties,
# e.g. climate components usually have a temperature sensor
for domain, c in components.items():
if (c.config_schema is not None) or c.is_platform_component:
if c.is_platform_component:
platform_schema = base_props[domain]["items"]["allOf"]
for platform in get_dirs():
p = get_platform(domain, platform)
if p is not None:
# this is a platform element, e.g.
# - platform: gpio
schema = get_jschema(
domain + "-" + platform,
p.config_schema,
create_return_ref=False,
)
if (
schema
): # for invalid schemas, None is returned thus is deprecated
platform_schema.append(
{
"if": {
JSC_PROPERTIES: {
"platform": {"const": platform}
}
},
"then": schema,
}
)
elif c.config_schema is not None:
# adds root components which are not platforms, e.g. api: logger:
if c.is_multi_conf:
schema = get_jschema(domain, c.config_schema)
schema = add_definition_array_or_single_object(schema)
else:
schema = get_jschema(domain, c.config_schema, False)
base_props[domain] = schema
def get_automation_schema(name, vschema):
from esphome.automation import AUTOMATION_SCHEMA
# ensure SIMPLE_AUTOMATION
if SIMPLE_AUTOMATION not in definitions:
simple_automation = add_definition_array_or_single_object(get_ref(JSC_ACTION))
simple_automation[JSC_ANYOF].append(
get_jschema(AUTOMATION_SCHEMA.__module__, AUTOMATION_SCHEMA)
)
definitions[schema_names[str(AUTOMATION_SCHEMA)]][JSC_PROPERTIES][
"then"
] = add_definition_array_or_single_object(get_ref(JSC_ACTION))
definitions[SIMPLE_AUTOMATION] = simple_automation
extra_vschema = None
if AUTOMATION_SCHEMA == ejs.extended_schemas[str(vschema)][0]:
extra_vschema = ejs.extended_schemas[str(vschema)][1]
if not extra_vschema:
return get_ref(SIMPLE_AUTOMATION)
# add then property
extra_jschema = get_jschema(name, extra_vschema, False)
if is_ref(extra_jschema):
return extra_jschema
if not JSC_PROPERTIES in extra_jschema:
# these are interval: and exposure_notifications, featuring automations a component
extra_jschema[JSC_ALLOF][0][JSC_PROPERTIES][
"then"
] = add_definition_array_or_single_object(get_ref(JSC_ACTION))
ref = create_ref(name, extra_vschema, extra_jschema)
return add_definition_array_or_single_object(ref)
# automations can be either
# * a single action,
# * an array of action,
# * an object with automation's schema and a then key
# with again a single action or an array of actions
extra_jschema[JSC_PROPERTIES]["then"] = add_definition_array_or_single_object(
get_ref(JSC_ACTION)
)
jschema = add_definition_array_or_single_object(get_ref(JSC_ACTION))
jschema[JSC_ANYOF].append(extra_jschema)
return create_ref(name, extra_vschema, jschema)
def get_entry(parent_key, vschema):
from esphome.voluptuous_schema import _Schema as schema_type
entry = {}
# annotate schema validator info
if DUMP_COMMENTS:
entry[JSC_COMMENT] = "entry: " + parent_key + "/" + str(vschema)
if isinstance(vschema, list):
ref = get_jschema(parent_key + "[]", vschema[0])
entry = {"type": "array", "items": ref}
elif isinstance(vschema, schema_type) and hasattr(vschema, "schema"):
entry = get_jschema(parent_key, vschema, False)
elif hasattr(vschema, "validators"):
entry = get_jschema(parent_key, vschema, False)
elif vschema in schema_registry:
entry = schema_registry[vschema].copy()
elif str(vschema) in ejs.registry_schemas:
entry = get_registry_ref(ejs.registry_schemas[str(vschema)])
elif str(vschema) in ejs.list_schemas:
ref = get_jschema(parent_key, ejs.list_schemas[str(vschema)][0])
entry = {JSC_ANYOF: [ref, {"type": "array", "items": ref}]}
elif str(vschema) in ejs.typed_schemas:
schema_types = [{"type": "object", "properties": {"type": {"type": "string"}}}]
entry = {"allOf": schema_types}
for schema_key, vschema_type in ejs.typed_schemas[str(vschema)][0][0].items():
schema_types.append(
{
"if": {"properties": {"type": {"const": schema_key}}},
"then": get_jschema(f"{parent_key}-{schema_key}", vschema_type),
}
)
elif str(vschema) in ejs.hidden_schemas:
# get the schema from the automation schema
type = ejs.hidden_schemas[str(vschema)]
inner_vschema = vschema(ejs.jschema_extractor)
if type == "automation":
entry = get_automation_schema(parent_key, inner_vschema)
elif type == "maybe":
entry = get_jschema(parent_key, inner_vschema)
else:
raise ValueError("Unknown extracted schema type")
elif str(vschema).startswith("<function invalid."):
# deprecated options, don't list as valid schema
return None
else:
# everything else just accept string and let ESPHome validate
try:
from esphome.core import ID
v = vschema(None)
if isinstance(v, ID):
entry = {"type": "string", "id_type": v.type.base}
elif isinstance(v, str):
entry = {"type": "string"}
elif isinstance(v, list):
entry = {"type": "array"}
else:
entry = default_schema()
except:
entry = default_schema()
return entry
def default_schema():
# Accept anything
return {"type": ["null", "object", "string", "array", "number"]}
def is_default_schema(jschema):
if is_ref(jschema):
return is_default_schema(unref(jschema))
return "type" in jschema and jschema["type"] == default_schema()["type"]
def get_jschema(path, vschema, create_return_ref=True):
name = schema_names.get(get_schema_str(vschema))
if name:
return get_ref(name)
jschema = convert_schema(path, vschema)
if is_ref(jschema):
# this can happen when returned extended
# schemas where all properties found in previous extended schema
return jschema
if not create_return_ref:
return jschema
return create_ref(path, vschema, jschema)
def get_schema_str(vschema):
# Hack on cs.use_id, in the future this can be improved by trackign which type is required by
# the id, this information can be added somehow to schema (not supported by jsonschema) and
# completion can be improved listing valid ids only Meanwhile it's a problem because it makes
# all partial schemas with cv.use_id different, e.g. i2c
return re.sub(
pattern="function use_id.<locals>.validator at 0[xX][0-9a-fA-F]+>",
repl="function use_id.<locals>.validator<>",
string=str(vschema),
)
def create_ref(name, vschema, jschema):
if name in schema_names:
raise ValueError("Not supported")
schema_str = get_schema_str(vschema)
schema_names[schema_str] = name
definitions[name] = jschema
return get_ref(name)
def get_all_properties(jschema):
if JSC_PROPERTIES in jschema:
return list(jschema[JSC_PROPERTIES].keys())
if is_ref(jschema):
return get_all_properties(unref(jschema))
arr = jschema.get(JSC_ALLOF, jschema.get(JSC_ANYOF))
props = []
for x in arr:
props = props + get_all_properties(x)
return props
def merge(arr, element):
# arr is an array of dicts, dicts can have keys like, properties, $ref, required:[], etc
# element is a single dict which might have several keys to
# the result should be an array with only one element containing properties, required, etc
# and other elements for needed $ref elements
# NOTE: json schema supports allof with properties in different elements, but that makes
# complex for later adding docs to the schema
for k, v in element.items():
if k == JSC_PROPERTIES:
props_found = False
for a_dict in arr:
if JSC_PROPERTIES in a_dict:
# found properties
arr_props = a_dict[JSC_PROPERTIES]
for v_k, v_v in v.items():
arr_props[v_k] = v_v # add or overwrite
props_found = True
if not props_found:
arr.append(element)
elif k == JSC_REF:
ref_found = False
for a_dict in arr:
if k in a_dict and a_dict[k] == v:
ref_found = True
continue
if not ref_found:
arr.append(element)
else:
# TODO: Required might require special handling
pass
def convert_schema(path, vschema, un_extend=True):
import esphome.config_validation as cv
# analyze input key, if it is not a Required or Optional, then it is an array
output = {}
if str(vschema) in ejs.hidden_schemas:
# this can get another think twist. When adding this I've already figured out
# interval and script in other way
if path not in ["interval", "script"]:
vschema = vschema(ejs.jschema_extractor)
if un_extend:
extended = ejs.extended_schemas.get(str(vschema))
if extended:
lhs = get_jschema(path, extended[0], False)
rhs = get_jschema(path, extended[1], False)
# check if we are not merging properties which are already in base component
lprops = get_all_properties(lhs)
rprops = get_all_properties(rhs)
if all(item in lprops for item in rprops):
return lhs
if all(item in rprops for item in lprops):
return rhs
# merge
if JSC_ALLOF in lhs and JSC_ALLOF in rhs:
output = lhs[JSC_ALLOF]
for k in rhs[JSC_ALLOF]:
merge(output[JSC_ALLOF], k)
elif JSC_ALLOF in lhs:
output = lhs
merge(output[JSC_ALLOF], rhs)
elif JSC_ALLOF in rhs:
output = rhs
merge(output[JSC_ALLOF], lhs)
else:
output = {JSC_ALLOF: [lhs]}
merge(output[JSC_ALLOF], rhs)
return output
# When schema contains all, all also has a schema which points
# back to the containing schema
while hasattr(vschema, "schema") and not hasattr(vschema, "validators"):
vschema = vschema.schema
if hasattr(vschema, "validators"):
output = default_schema()
for v in vschema.validators:
if v:
# we should take the valid schema,
# commonly all is used to validate a schema, and then a function which
# is not a schema es also given, get_schema will then return a default_schema()
val_schema = get_jschema(path, v, False)
if is_default_schema(val_schema):
if not output:
output = val_schema
else:
if is_default_schema(output):
output = val_schema
else:
output = {**output, **val_schema}
return output
if not vschema:
return output
if not hasattr(vschema, "keys"):
return get_entry(path, vschema)
key = list(vschema.keys())[0]
# used for platformio_options in core_config
# pylint: disable=comparison-with-callable
if key == cv.string_strict:
output["type"] = "object"
return output
props = output[JSC_PROPERTIES] = {}
output["type"] = ["object", "null"]
if DUMP_COMMENTS:
output[JSC_COMMENT] = "converted: " + path + "/" + str(vschema)
if path == "logger-logs":
tags = get_logger_tags()
for k in tags:
props[k] = {
"enum": [
"NONE",
"ERROR",
"WARN",
"INFO",
"DEBUG",
"VERBOSE",
"VERY_VERBOSE",
]
}
else:
for k in vschema:
if str(k).startswith("<function"):
# generate all logger tags
# TODO handle key functions
continue
v = vschema[k]
prop = {}
if isinstance(v, vol.Schema):
prop = get_jschema(path + "-" + str(k), v.schema)
elif hasattr(v, "validators"):
prop = convert_schema(path + "-" + str(k), v, False)
else:
prop = get_entry(path + "-" + str(k), v)
if prop: # Deprecated (cv.Invalid) properties not added
props[str(k)] = prop
# TODO: see required, sometimes completions doesn't show up because of this...
# if isinstance(k, cv.Required):
# required.append(str(k))
try:
if str(k.default) != "...":
prop["default"] = k.default()
except:
pass
return output
def add_pin_schema():
from esphome import pins
add_module_schemas("PIN", pins)
def add_pin_registry():
from esphome import pins
pin_registry = pins.PIN_SCHEMA_REGISTRY
assert len(pin_registry) > 0
# Here are schemas for pcf8574, mcp23xxx and other port expanders which add
# gpio registers
# ESPHome validates pins schemas if it founds a key in the pin configuration.
# This key is added to a required in jsonschema, and all options are part of a
# oneOf section, so only one is selected. Also internal schema adds number as required.
for mode in ("INPUT", "OUTPUT"):
schema_name = f"PIN.GPIO_FULL_{mode}_PIN_SCHEMA"
internal = definitions[schema_name]
definitions[schema_name]["additionalItems"] = False
definitions[f"PIN.{mode}_INTERNAL"] = internal
schemas = [get_ref(f"PIN.{mode}_INTERNAL")]
schemas[0]["required"] = ["number"]
# accept string and object, for internal shorthand pin IO:
definitions[schema_name] = {"oneOf": schemas, "type": ["string", "object"]}
for k, v in pin_registry.items():
pin_jschema = get_jschema(
f"PIN.{mode}_" + k, v[1][0 if mode == "OUTPUT" else 1]
)
if unref(pin_jschema):
pin_jschema["required"] = [k]
schemas.append(pin_jschema)
def dump_schema():
import esphome.config_validation as cv
from esphome import automation
from esphome.automation import validate_potentially_and_condition
from esphome import pins
from esphome.core import CORE
from esphome.helpers import write_file_if_changed
from esphome.components import remote_base
# The root directory of the repo
root = Path(__file__).parent.parent
# Fake some diretory so that get_component works
CORE.config_path = str(root)
file_path = args.output
schema_registry[cv.boolean] = {"type": "boolean"}
for v in [
cv.int_,
cv.int_range,
cv.positive_int,
cv.float_,
cv.positive_float,
cv.positive_float,
cv.positive_not_null_int,
cv.negative_one_to_one_float,
cv.port,
]:
schema_registry[v] = {"type": "number"}
for v in [
cv.string,
cv.string_strict,
cv.valid_name,
cv.hex_int,
cv.hex_int_range,
pins.output_pin,
pins.input_pin,
pins.input_pullup_pin,
cv.subscribe_topic,
cv.publish_topic,
cv.mqtt_payload,
cv.ssid,
cv.percentage_int,
cv.percentage,
cv.possibly_negative_percentage,
cv.positive_time_period,
cv.positive_time_period_microseconds,
cv.positive_time_period_milliseconds,
cv.positive_time_period_minutes,
cv.positive_time_period_seconds,
]:
schema_registry[v] = {"type": "string"}
schema_registry[validate_potentially_and_condition] = get_ref("condition_list")
for v in [pins.gpio_input_pin_schema, pins.gpio_input_pullup_pin_schema]:
schema_registry[v] = get_ref("PIN.GPIO_FULL_INPUT_PIN_SCHEMA")
for v in [pins.gpio_output_pin_schema, pins.internal_gpio_output_pin_schema]:
schema_registry[v] = get_ref("PIN.GPIO_FULL_OUTPUT_PIN_SCHEMA")
add_module_schemas("CONFIG", cv)
get_jschema("POLLING_COMPONENT", cv.polling_component_schema("60s"))
add_pin_schema()
add_module_schemas("REMOTE_BASE", remote_base)
add_module_schemas("AUTOMATION", automation)
load_components()
add_registries()
definitions["condition_list"] = {
JSC_ONEOF: [
{"type": "array", "items": get_ref(JSC_CONDITION)},
get_ref(JSC_CONDITION),
]
}
output = {
"$schema": "http://json-schema.org/draft-07/schema#",
"type": "object",
"definitions": definitions,
JSC_PROPERTIES: base_props,
}
add_core()
add_buses()
add_components()
add_registries() # need second pass, e.g. climate.pid.autotune
add_pin_registry()
solve_pending_refs()
write_file_if_changed(file_path, json.dumps(output))
print(f"Wrote {file_path}")
dump_schema()