dzVents script for getting pollen data via Google Pollen API
Posted: Friday 09 February 2024 13:18
Hi,
I've created and attached a simple LUA dzVents script (I've had to rename it from pollen.lua to pollen.txt) which fetches the current pollen data from the Google Pollen API (https://developers.google.com/maps/docu ... n/overview) and updates some (pre-created) custom devices (see deviceMapping). The LUA script must be configured:
API KEY (you get this one from google)
LAT (latitude)
LONG (longitude)
LANG (language, currently not really used)
The LUA script fetches the pollen data once per hour and updates the corresponding devices (see deviceMapping), this devices must be created manually (Create Virtual Sensor and use Custom Sensor as device type). The "TOTAL" device is set to the average UPI of all devices with a UPI > 0.
Feel free (as in free beer) to use this
Edit WalterVl
I've created and attached a simple LUA dzVents script (I've had to rename it from pollen.lua to pollen.txt) which fetches the current pollen data from the Google Pollen API (https://developers.google.com/maps/docu ... n/overview) and updates some (pre-created) custom devices (see deviceMapping). The LUA script must be configured:
API KEY (you get this one from google)
LAT (latitude)
LONG (longitude)
LANG (language, currently not really used)
The LUA script fetches the pollen data once per hour and updates the corresponding devices (see deviceMapping), this devices must be created manually (Create Virtual Sensor and use Custom Sensor as device type). The "TOTAL" device is set to the average UPI of all devices with a UPI > 0.
Feel free (as in free beer) to use this
Edit WalterVl
Code: Select all
return {
active = true,
on = {
timer = {
'every hour'
},
httpResponses = {
'pollenCallback'
}
},
logging = {
marker = 'pollen'
},
execute = function(dz, item, triggerInfo)
-- Configuration
local cfg = {
URL = 'https://pollen.googleapis.com/v1/forecast:lookup',
APIKEY = '<API KEY>',
LAT = '<LAT>',
LONG = '<LONG>',
LANG = 'en',
}
-- Device mapping (code to device id)
local deviceMapping = {
HAZEL = 2572,
ASH = 2573,
COTTONWOOD = 2574,
OAK = 2575,
PINE = 2576,
BIRCH = 2577,
OLIVE = 2578,
GRAMINALES = 2579,
RAGWEED = 2580,
ALDER = 2581,
MUGWORT = 2582,
TOTAL = 2583
}
if (item.isTimer) then
dz.log('Pollen')
-- Request pollen data
local url = cfg.URL ..
'?key=' .. cfg.APIKEY ..
'&location.latitude=' .. cfg.LAT ..
'&location.longitude=' .. cfg.LONG ..
'&languageCode=' .. cfg.LANG ..
'&plantsDescription=0' ..
'&days=1'
dz.openURL({
url = url,
method = 'GET',
callback = 'pollenCallback'
});
elseif (item.isHTTPResponse) then
if (item.ok and item.isJSON) then
local json = dz.utils.fromJSON(item.data)
if (json and json.dailyInfo) then
local plantInfos = json.dailyInfo[1].plantInfo
local totalUPI = 0
local upiCount = 0;
-- Iterate over all plants
for i, plant in pairs(plantInfos) do
local upi = 0
if (plant.inSeason and plant.inSeason == true and plant.indexInfo and plant.indexInfo.value) then
upi = plant.indexInfo.value
end
dz.log('Processing plant: ' .. plant.code .. ' => UPI: ' .. upi)
if(upi > 0) then
totalUPI = totalUPI + upi
upiCount = upiCount + 1
end
if (deviceMapping and deviceMapping[plant.code]) then
-- Get domotics device
local dev = dz.devices(deviceMapping[plant.code])
if (dev) then
dev.updateCustomSensor(upi)
dz.log('UPI for plant ' .. plant.code .. ' has been set to: ' .. upi)
else
dz.log('Error: Device mapping found for plant ' .. plant.code .. ' but device does not exist in domoticz')
end
else
dz.log('Error: No device mapping found for plant ' .. plant.code)
end
end
-- Update total upi
local dev = dz.devices(deviceMapping['TOTAL'])
if(upiCount > 0) then
totalUPI = totalUPI / upiCount
end
dz.log('Setting total UPI: ' .. totalUPI .. ' (upiCount: ' .. upiCount .. ')')
dev.updateCustomSensor(totalUPI)
else
dz.log('Error: Invalid JSON structure')
end
else
dz.log('Errror: ' .. item.statusText .. ' (' .. item.statusCode .. ')')
end
end
end
}