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esphome-dev/esphome/components/template/sensor/__init__.py
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Python

import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import automation
from esphome.components import sensor
from esphome.const import (
CONF_ID,
CONF_LAMBDA,
CONF_STATE,
DEVICE_CLASS_EMPTY,
UNIT_EMPTY,
ICON_EMPTY,
)
from .. import template_ns
TemplateSensor = template_ns.class_(
"TemplateSensor", sensor.Sensor, cg.PollingComponent
)
CONFIG_SCHEMA = (
sensor.sensor_schema(UNIT_EMPTY, ICON_EMPTY, 1, DEVICE_CLASS_EMPTY)
.extend(
{
cv.GenerateID(): cv.declare_id(TemplateSensor),
cv.Optional(CONF_LAMBDA): cv.returning_lambda,
}
)
.extend(cv.polling_component_schema("60s"))
)
def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
yield cg.register_component(var, config)
yield sensor.register_sensor(var, config)
if CONF_LAMBDA in config:
template_ = yield cg.process_lambda(
config[CONF_LAMBDA], [], return_type=cg.optional.template(float)
)
cg.add(var.set_template(template_))
@automation.register_action(
"sensor.template.publish",
sensor.SensorPublishAction,
cv.Schema(
{
cv.Required(CONF_ID): cv.use_id(sensor.Sensor),
cv.Required(CONF_STATE): cv.templatable(cv.float_),
}
),
)
def sensor_template_publish_to_code(config, action_id, template_arg, args):
paren = yield cg.get_variable(config[CONF_ID])
var = cg.new_Pvariable(action_id, template_arg, paren)
template_ = yield cg.templatable(config[CONF_STATE], args, float)
cg.add(var.set_state(template_))
yield var