Update agent code and analytics scripts. Fixed bugs

modules/samples/watertank/component/analytics/src/main/resources/carbonapps/watertank/watertank_receiver/watertank_receiver.xml

@@ -17,16 +17,12 @@
   ~ under the License.
   -->
 
-<eventReceiver name="watertank_receiver" statistics="disable" trace="disable"
-               xmlns="http://wso2.org/carbon/eventreceiver">
+<eventReceiver name="watertank_receiver" statistics="disable" trace="disable" xmlns="http://wso2.org/carbon/eventreceiver">
     <from eventAdapterType="oauth-mqtt">
         <property name="topic">carbon.super/watertank/+/data</property>
         <property name="username">admin</property>
-        <property name="contentValidatorParams">
-            device_id_json_path:event.metaData.deviceId,device_id_topic_hierarchy_index:2
-        </property>
-        <property name="contentValidator">org.wso2.carbon.device.mgt.iot.input.adapter.mqtt.util.MQTTContentValidator
-        </property>
+        <property name="contentValidatorParams">device_id_json_path:event.metaData.deviceId,device_id_topic_hierarchy_index:2</property>
+        <property name="contentValidator">org.wso2.carbon.device.mgt.iot.input.adapter.mqtt.util.MQTTContentValidator</property>
         <property name="contentTransformer">default</property>
         <property name="dcrUrl">https://localhost:${carbon.https.port}/dynamic-client-web/register</property>
         <property name="url">tcp://${mqtt.broker.host}:${mqtt.broker.port}</property>
@@ -35,4 +31,3 @@
     <mapping customMapping="disable" type="json"/>
     <to streamName="org.wso2.iot.watertank" version="1.0.0"/>
 </eventReceiver>
-

modules/samples/watertank/feature/feature/src/main/resources/agent/water-tank.lua

@@ -1,9 +1,9 @@
 trig = 5 --IO14
-echo = 7 --IO13
+echo = 1 --IO5
 relay = 0 --IO16
-is_relay_on = false
+is_relay_on = "false"
 pulse_time = 0
-water_level = 0
+water_level = -1
 relay_on = 10
 relay_off = 100
 tank_height = 120
@@ -22,7 +22,7 @@ function read_config()
     if (file.open("config") ~= nil) then
         local result = string.sub(file.readline(), 1, -2) -- to remove newline character
         file.close()
-        local v1, v2, v3 = result:match("([^,]+),([^,]+)")
+        local v1, v2, v3 = result:match("([^,]+),([^,]+),([^,]+)")
         relay_on = tonumber(v1)
         relay_off = tonumber(v2)
         tank_height = tonumber(v3)
@@ -39,7 +39,7 @@ gpio.mode(echo, gpio.INT)
 read_config()
 
 gpio.trig(echo, "both", function(level)
-    local du = tmr.now() - pulse_time
+    du = tmr.now() - pulse_time
     if (level == 1) then
         pulse_time = tmr.now()
     else
@@ -47,34 +47,28 @@ gpio.trig(echo, "both", function(level)
         water_level = tank_height - (du / 40);
         if (water_level < relay_on) then
             gpio.write(relay, gpio.HIGH)
-            is_relay_on = true
+            is_relay_on = "true"
         elseif (water_level > relay_off) then
             gpio.write(relay, gpio.LOW)
-            is_relay_on = false
+            is_relay_on = "false"
         end
-        print("Water Level: " .. water_level .. " cm")
-        collectgarbage()
     end
 end)
 
 tmr.alarm(0, 5000, 1, function()
+    collectgarbage()
     gpio.write(trig, gpio.HIGH)
     tmr.delay(10)
     gpio.write(trig, gpio.LOW)
-end)
-
-tmr.alarm(0, 10000, 1, function()
-    if t == nil then
-        print("Error reading from DHTxx")
-    else
-        if (client_connected) then
+    if client_connected then
+        if (water_level > -1) then
             local payload = "{event:{metaData:{owner:\"${DEVICE_OWNER}\",deviceId:\"${DEVICE_ID}\"},payloadData:{relay:" .. is_relay_on .. ", waterlevel:" .. water_level .. "}}}"
             m:publish("carbon.super/watertank/${DEVICE_ID}/data", payload, 0, 0, function(client)
-                print("Published> Water Level: " .. water_level .. "cm  Relay: " .. is_relay_on .. "%")
+                print("Published> Water Level: " .. water_level .. "cm  Relay: " .. is_relay_on)
             end)
-        else
-            connectMQTTClient()
         end
+    else
+        connectMQTTClient()
     end
 end)
 
@@ -85,30 +79,30 @@ function connectMQTTClient()
     else
         print("Client IP: " .. ip)
         print("Trying to connect MQTT client")
-        m:connect("${MQTT_EP}", $ { MQTT_PORT } , 0 , function (client)
-        client_connected = true
-        print("MQTT client connected")
-        subscribeToMQTTQueue()
-    end)
-end
+        m:connect("${MQTT_EP}", ${MQTT_PORT}, 0, function(client)
+            client_connected = true
+            print("MQTT client connected")
+            subscribeToMQTTQueue()
+        end)
+    end
 end
 
 function subscribeToMQTTQueue()
-m: subscribe("carbon.super/watertank/${DEVICE_ID}/command", 0, function(client, topic, message)
-print("Subscribed to MQTT Queue")
-end)
-m: on("message", function(client, topic, message)
-print("MQTT message received")
-print(message)
-local v1, v2, v3 = message: match("([^,]+),([^,]+)")
-relay_on = tonumber(v1)
-relay_off = tonumber(v2)
-tank_height = tonumber(v3)
-print("Received configs:".. relay_on.. ",".. relay_off.. ",".. tank_height)
-save_config();
-end)
-m: on("offline", function(client)
-print("Disconnected")
-client_connected = false
-end)
+    m:subscribe("carbon.super/watertank/${DEVICE_ID}/command", 0, function(client, topic, message)
+        print("Subscribed to MQTT Queue")
+    end)
+    m:on("message", function(client, topic, message)
+        print("MQTT message received")
+        print(message)
+        local v1, v2, v3 = message:match("([^,]+),([^,]+),([^,]+)")
+        relay_on = tonumber(v1)
+        relay_off = tonumber(v2)
+        tank_height = tonumber(v3)
+        print("Received configs:" .. relay_on .. "," .. relay_off .. "," .. tank_height)
+        save_config();
+    end)
+    m:on("offline", function(client)
+        print("Disconnected")
+        client_connected = false
+    end)
 end