package main
​
import (
    "fmt"
    bw2 "gopkg.in/immesys/bw2bind.v5"
)
​
func main() {
    client := bw2.ConnectOrExit("")
    client.OverrideAutoChainTo(true)
    client.SetEntityFromEnvironOrExit()
​
    base_uri := "Meter uri goes here ending in i.xbos.meter"
​
    // subscribe
    type signal struct {
        Power          float64 `msgpack:"power"`
        Voltage        float64 `msgpack:"voltage"`
        Apparent_power float64 `msgpack:"apparent_power"`
        Time           int64   `msgpack:"time"`
    }
    c, err := client.Subscribe(&bw2.SubscribeParams{
        URI: base_uri + "/signal/info",
    })
    if err != nil {
        panic(err)
    }
​
    for msg := range c {
        var current_state signal
        po := msg.GetOnePODF("2.1.1.4/32")
        err := po.(bw2.MsgPackPayloadObject).ValueInto(&current_state)
        if err != nil {
            fmt.Println(err)
        } else {
            fmt.Println(current_state)
        }
    }
}

import time
import msgpack
​
from bw2python.bwtypes import PayloadObject
from bw2python.client import Client
​
bw_client = Client()
bw_client.setEntityFromEnviron()
bw_client.overrideAutoChainTo(True)
​
def onMessage(bw_message):
  for po in bw_message.payload_objects:
    if po.type_dotted == (2,1,1,4):
      print msgpack.unpackb(po.content)
​
bw_client.subscribe("Meter uri ending in i.xbos.meter/signal/info", onMessage)
​
print "Subscribing. Ctrl-C to quit."
while True:
  time.sleep(10000)