Tibber API

[eilert]

Use updated user.websocket library attached to this post.

Change token / homeId as needed. Add object updates at line 78. Use grp.checkupdate or grp.checkwrite so that LM is not overloaded with unnecessary duplicate values.

Code:

ws = require('user.websocket')
json = require('json')
http = require('socket.http')
ltn12 = require('ltn12')

token = '12345'

payload = json.encode({ query = '{viewer { websocketSubscriptionUrl } }' })

res = http.request({
  url = 'https://api.tibber.com/v1-beta/gql',
  method = 'POST',
  headers = {
    ['Authorization'] = 'Bearer ' .. token,
    ['Content-Type'] = 'application/json',
    ['Content-Length'] = #payload,
  },
  source = ltn12.source.string(payload),
})

res = json.pdecode(res)

if type(res) == 'table' and res.data then
  url = res.data.viewer.websocketSubscriptionUrl

  client, err = ws.client('sync', 30)
  client.protocol = 'graphql-transport-ws'
  res, err = client:connect(url)

  query = [[
  subscription {
    liveMeasurement(homeId: "a-b-c-d") {
      timestamp
      power
      accumulatedConsumption
      accumulatedCost
      currency
      minPower
      averagePower
      maxPower
    }
  }
  ]]
else
  res = nil
end

if res then
  res, err = client:send(json.encode({
    type = 'connection_init',
    payload = {
      token = token
    }
  }))

  client:receive()

  ts, tu = os.microtime()

  res, err = client:send(json.encode({
    id = ts .. '-' .. tu,
    type = 'subscribe',
    payload = {
      query = query
    }
  }))

  while true do
    data, opcode, _, _, err = client:receive()

    if data then
      if opcode == ws.PING then
        client:send(data, ws.PONG)
      elseif opcode == ws.TEXT then
        data = json.pdecode(data)

        if type(data) == 'table' then
          -- update objects here
        end
      end
    else
      log('receive failed: ' .. tostring(err))
      break
    end
  end
else
  log('connection failed: ' .. tostring(err))
end

if client then
  client:close()
  client = nil
end

Hi, the new websocket.lua (or the new GraphQL transport protocol) seem to create a much more unstable connection than before. I get "Websocket receive failed: closed" 3-4 times per minute and I need to restart the resident script every 10 minute. Are the timeouts too short? Response code is 1006. I hope there will be a more stable approach to this