84 lines
2.2 KiB
Ruby
84 lines
2.2 KiB
Ruby
# frozen_string_literal: true
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require 'bundler'
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Bundler.require
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Dotenv.load
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Dotenv.require_keys('MOJI_APPCODE', 'IOT_MQTT_HOST', 'IOT_MQTT_PORT', 'IOT_MQTT_SSL')
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wxapi = MojiWeather::Api::RestClient.new(app_code: ENV['MOJI_APPCODE'])
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def extract_device_id(topic)
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devid = %r{iot/weather/(.*)/request}.match(topic)
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if devid.nil?
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nil
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else
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devid[1]
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end
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end
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begin
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client = MQTT::Client.new
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client.host = ENV['IOT_MQTT_HOST']
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client.port = ENV['IOT_MQTT_PORT'].to_i
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unless ENV['IOT_MQTT_SSL'].nil? || ENV['IOT_MQTT_SSL'] == 'false' || ENV['IOT_MQTT_SSL'] == 'no'
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client.ssl = true
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client.cert_file = ENV['IOT_MQTT_SSL_CERT_FILE']
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client.key_file = ENV['IOT_MQTT_SSL_KEY_FILE']
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client.ca_file = ENV['IOT_MQTT_SSL_CA_FILE']
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end
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client.connect
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client.subscribe('iot/weather/#')
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client.get do |topic, payload|
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# this method also checks if this is from a request topic.
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dev_id = extract_device_id(topic)
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unless dev_id.nil?
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puts "[#{dev_id}] <- #{payload.length}B"
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# decode CBOR object, retrieve request.
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dev_req = CBOR.decode(payload)
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wx_cond = case dev_req['type']
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when 'condition'
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MojiWeather::Api::ApiType::CONDITION
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when 'aqi'
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MojiWeather::Api::ApiType::AQI
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when 'forecast24'
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MojiWeather::Api::ApiType::FORECAST_24HRS
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end
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req_params = if !dev_req['city_id'].nil?
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{ city_id: dev_req['city_id'] }
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elsif !dev_req['location'].nil?
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{ location: { lat: dev_req['location']['lat'], lon: dev_req['location']['lon'] } }
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else
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puts "[#{dev_id}] not a valid request"
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next
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end
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# Request external service for weather information
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api_resp = wxapi.query(wx_cond, req_params)
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# Encode CBOR object
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# Publish to response topic.
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resp = api_resp.to_cbor
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puts "[#{dev_id}] -> #{resp.length}B"
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client.publish("iot/weather/#{dev_id}/response", resp)
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end
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end
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rescue SystemExit, Interrupt
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puts "Interrupt caught, client [#{client}] disconnect."
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client.disconnect
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rescue StandardError => e
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p e
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end
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