90 lines
1.8 KiB
Go
90 lines
1.8 KiB
Go
package plugin
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/evcc-io/evcc/api"
|
|
"github.com/evcc-io/evcc/util"
|
|
)
|
|
|
|
func init() {
|
|
registry.AddCtx("valid", NewValidFromConfig)
|
|
}
|
|
|
|
// validPlugin validates a reading via a second reading
|
|
type validPlugin struct {
|
|
ctx context.Context
|
|
valid func() (bool, error)
|
|
value Config
|
|
}
|
|
|
|
// NewValidFromConfig creates valid provider
|
|
func NewValidFromConfig(ctx context.Context, other map[string]interface{}) (Plugin, error) {
|
|
var cc struct {
|
|
Valid, Value Config
|
|
}
|
|
|
|
if err := util.DecodeOther(other, &cc); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
valid, err := cc.Valid.BoolGetter(ctx)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("valid: %w", err)
|
|
}
|
|
|
|
o := NewValidPlugin(ctx, valid, cc.Value)
|
|
|
|
return o, nil
|
|
}
|
|
|
|
// NewValidPlugin creates valid provider
|
|
func NewValidPlugin(ctx context.Context, valid func() (bool, error), value Config) *validPlugin {
|
|
return &validPlugin{
|
|
ctx: ctx,
|
|
valid: valid,
|
|
value: value,
|
|
}
|
|
}
|
|
|
|
var _ StringGetter = (*validPlugin)(nil)
|
|
|
|
func validGetter[T any](o *validPlugin, valuer func(ctx context.Context) (func() (T, error), error)) (func() (T, error), error) {
|
|
value, err := valuer(o.ctx)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("valid: %w", err)
|
|
}
|
|
|
|
return func() (T, error) {
|
|
var zero T
|
|
|
|
valid, err := o.valid()
|
|
if err != nil {
|
|
return zero, err
|
|
}
|
|
if !valid {
|
|
return zero, api.ErrNotAvailable
|
|
}
|
|
|
|
return value()
|
|
}, nil
|
|
}
|
|
|
|
var _ StringGetter = (*validPlugin)(nil)
|
|
|
|
func (o *validPlugin) StringGetter() (func() (string, error), error) {
|
|
return validGetter(o, o.value.StringGetter)
|
|
}
|
|
|
|
var _ FloatGetter = (*validPlugin)(nil)
|
|
|
|
func (o *validPlugin) FloatGetter() (func() (float64, error), error) {
|
|
return validGetter(o, o.value.FloatGetter)
|
|
}
|
|
|
|
var _ IntGetter = (*validPlugin)(nil)
|
|
|
|
func (o *validPlugin) IntGetter() (func() (int64, error), error) {
|
|
return validGetter(o, o.value.IntGetter)
|
|
}
|