121 lines
2.8 KiB
Go
121 lines
2.8 KiB
Go
package meter
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import (
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"errors"
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"fmt"
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"strings"
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"time"
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"github.com/andig/evcc/api"
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"github.com/andig/evcc/charger/openwb"
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"github.com/andig/evcc/provider"
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"github.com/andig/evcc/provider/mqtt"
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"github.com/andig/evcc/util"
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)
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func init() {
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registry.Add("openwb", NewOpenWBFromConfig)
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}
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// NewOpenWBFromConfig creates a new configurable meter
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func NewOpenWBFromConfig(other map[string]interface{}) (api.Meter, error) {
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cc := struct {
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mqtt.Config `mapstructure:",squash"`
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Topic string
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Timeout time.Duration
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Usage string
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}{
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Topic: "openWB",
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Timeout: 15 * time.Second,
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}
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if err := util.DecodeOther(other, &cc); err != nil {
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return nil, err
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}
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log := util.NewLogger("openwb")
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client, err := mqtt.RegisteredClientOrDefault(log, cc.Config)
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if err != nil {
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return nil, err
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}
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// timeout handler
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timer := provider.NewMqtt(log, client,
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fmt.Sprintf("%s/system/%s", cc.Topic, openwb.TimestampTopic), "", 1, cc.Timeout,
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).IntGetter()
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// getters
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boolG := func(topic string) func() (bool, error) {
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g := provider.NewMqtt(log, client, topic, "", 1, 0).BoolGetter()
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return func() (val bool, err error) {
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if val, err = g(); err == nil {
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_, err = timer()
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}
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return val, err
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}
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}
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floatG := func(topic string) func() (float64, error) {
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g := provider.NewMqtt(log, client, topic, "", 1, 0).FloatGetter()
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return func() (val float64, err error) {
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if val, err = g(); err == nil {
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_, err = timer()
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}
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return val, err
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}
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}
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var power func() (float64, error)
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var soc func() (float64, error)
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var currents []func() (float64, error)
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switch strings.ToLower(cc.Usage) {
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case "grid":
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power = floatG(fmt.Sprintf("%s/evu/%s", cc.Topic, openwb.PowerTopic))
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for i := 1; i <= 3; i++ {
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current := floatG(fmt.Sprintf("%s/evu/%s%d", cc.Topic, openwb.CurrentTopic, i))
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currents = append(currents, current)
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}
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case "pv":
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configuredG := boolG(fmt.Sprintf("%s/pv/%s", cc.Topic, openwb.PvConfigured))
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configured, err := configuredG()
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if err != nil {
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return nil, err
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}
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if !configured {
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return nil, errors.New("pv not available")
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}
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power = floatG(fmt.Sprintf("%s/pv/%s", cc.Topic, openwb.PowerTopic))
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case "battery":
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configuredG := boolG(fmt.Sprintf("%s/housebattery/%s", cc.Topic, openwb.BatteryConfigured))
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configured, err := configuredG()
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if err != nil {
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return nil, err
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}
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if !configured {
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return nil, errors.New("battery not available")
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}
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power = floatG(fmt.Sprintf("%s/housebattery/%s", cc.Topic, openwb.PowerTopic))
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soc = floatG(fmt.Sprintf("%s/housebattery/%s", cc.Topic, openwb.SoCTopic))
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default:
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return nil, fmt.Errorf("invalid usage: %s", cc.Usage)
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}
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m, err := NewConfigurable(power)
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if err != nil {
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return nil, err
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}
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res := m.Decorate(nil, currents, soc)
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return res, nil
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}
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