102 lines
1.6 KiB
Go
102 lines
1.6 KiB
Go
package detect
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import (
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"crypto/tls"
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"fmt"
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"net/http"
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"sync"
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"time"
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"github.com/andig/evcc/internal/meter/sma"
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"github.com/andig/evcc/util"
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)
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type SmaResult struct {
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Addr, Serial string
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Http bool
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}
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func init() {
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registry.Add("sma", SMAHandlerFactory)
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}
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func SMAHandlerFactory(conf map[string]interface{}) (TaskHandler, error) {
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handler := SMAHandler{
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Timeout: 5 * time.Second,
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}
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err := util.DecodeOther(conf, &handler)
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return &handler, err
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}
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type SMAHandler struct {
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mux sync.Mutex
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listener *sma.Listener
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Timeout time.Duration
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}
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func (h *SMAHandler) httpAvailable(ip string) bool {
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uri := fmt.Sprintf("https://%s", ip)
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client := http.Client{
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Timeout: time.Second,
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Transport: &http.Transport{
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TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
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},
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}
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resp, err := client.Get(uri)
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if err != nil {
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return false
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}
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resp.Body.Close()
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return true
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}
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func (h *SMAHandler) Test(log *util.Logger, ip string) (res []interface{}) {
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h.mux.Lock()
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if h.listener != nil {
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h.mux.Unlock()
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return nil
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}
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var err error
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if h.listener, err = sma.New(log); err != nil {
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log.ERROR.Println("sma:", err)
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return nil
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}
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h.mux.Unlock()
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resC := make(chan sma.Telegram)
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h.listener.Subscribe(sma.Any, resC)
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timer := time.NewTimer(h.Timeout)
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WAIT:
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for {
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select {
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case t := <-resC:
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// eliminate duplicates
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for _, r := range res {
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if r.(SmaResult).Serial == t.Serial {
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continue WAIT
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}
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}
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r := SmaResult{
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Addr: t.Addr,
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Serial: t.Serial,
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Http: h.httpAvailable(t.Addr),
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}
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res = append(res, r)
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case <-timer.C:
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break WAIT
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}
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}
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return res
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}
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