11. Gateways, Cloud - Edge Computing

Key Concepts

	Related docs
IoT application topology
Selective initialization
Cluster

	Related docs
Engine-to-engine queries
Edge-cloud parallel controls
Edge over-ride and cloud over-ride controls

Background

In order to model a real-world IoT application or a solution it is imperative to distribute load. In Greenhouse example we have a total of 270+ Sensors and Actuators.

It is impractical to run entire sensors and actuators on one single node (either OnPrem or Cloud)

Cluster Design

Greenhouse Model Review

Complete Greenhouse Model (Queries, Macros, Facets, Models, Types) can be found here

Types

Primitive Types
Cardinality
Defaults
Composites

Greenhouse Types

<Def Name="EnvInfo">
      <Number Name="Temperature"/>
      <Number Name="Humidity"/>
      <Number Name="Light"/>
      <Number Name="Pressure"/>
      <Number Name="SoilMoisture"/>
      <Number Name="Wind"/>
      <String Name="LastUpdatedByProvider"/>
</Def>
<Def Name="BoundingBox">
      <GeoLocation Name="Vertex1"/>
      <GeoLocation Name="Vertex2"/>
      <GeoLocation Name="Vertex3"/>
      <GeoLocation Name="Vertex4"/>
</Def>
<Def Name="GeoLocation">
      <Number Name="latitude"/>
      <Number Name="longitude"/>
</Def>
<Def Name="PeripheralParams">
		<String Name="Peripheral" />
		<String Name="InterfacePort" />
		<String Name="Interface" />
		<String Name="UniqueId" default="56789" />
		<String Name="Baudrate" />
		<String Name="Format" default="ascii" />
		<String Name="Operation" />
		<String Name="Payload" />
</Def>
 
<Def Name="PhilipLightState">
      <Boolean Name="On"/>
      <Integer Name="bri"/>
      <Integer Name="hue"/>
      <Integer Name="sat"/>
      <String Name="effect"/>
      <Double Name="xy" cardinality="2"/>
      <Integer Name="ct"/>
      <String Name="alert"/>
      <String Name="colormode"/>
      <Boolean Name="reachable"/>
</Def>
 
<Def Name="ImageSize">
		<Number Name="Height" />
		<Number Name="Width" />
</Def>

<Def Name="CameraConfig">
		<Number Name="Channel" />
		<Number Name="Standard" />
		<Number Name="Brightness" />
		<Number Name="Contrast" />
		<Number Name="Gamma" />
		<Number Name="Saturation" />
		<Number Name="Sharpness" />
		<Number Name="Hue" />
		<Number Name="Gain" />
		<Number Name="Quality" />
</Def>

<Def Name="USBCameraParams">
		<ImageSize Name="Size" />
		<CameraConfig Name="Configuration" />
		<String Name="SaveToDisk" />
		<String Name="ImageFormat" />
		<String Name="ImageName" />
</Def>

DataModel

Primitive Types
Default Format
Hidden Modifiers
Simple References

Greenhouse DataModel

<DataModel Name="Greenhouse">
      <Sid Name="GreenhouseID"/>
      <String Name="GreenhouseName"/>
      <GeoLocation Name="Location"/>
      <String Name="LocationName"/>
      <BoundingBox Name="Boundary"/>
      <Integer Name="LaneCount"/>
      <Double Name="LaneWidth"/>
      <Double Name="ZoneLength"/>
      <Integer Name="ZoneInLane"/>
      <Integer Name="ZoneCount"/>
      <Double Name="GHLength"/>
      <Double Name="GHWidth"/>
      <EnvInfo Name="ExternalEnv"/>
      <EnvInfo Name="InternalEnv"/>
      <String Name="VentOnOffState"/>
      <String Name="FansOnOffState"/>
      <Boolean Name="SunnyDay"/>
      <Boolean Name="Running" default="false"/> <!-- true / false -->
      <Reference Name="GHLanes"/>
      <Reference Name="GHExternalEnv"/>
      <Reference Name="GHInternalEnv"/>
</DataModel>

<DataModel Name="Lane">
      <Sid Name="LaneID"/>
      <String Name="LaneName"/>
      <Double Name="LaneLength"/>
      <Double Name="LaneWidth"/>
      <Integer Name="ZoneInLane"/>
      <String Name="BorderLane"/>
      <BoundingBox Name="LaneLocation"/>
      <Reference Name="GreenhouseID" Type="Greenhouse" Cardinality="1"/>
      <Reference Name="LaneZones"/>
</DataModel>
<DataModel Name="Zone">
      <Sid Name="ZoneID"/>
      <String Name="ZoneName"/>
      <BoundingBox Name="ZoneLocation"/>
      <GeoLocation Name="Location"/>
      <Double Name="ZoneWidth"/>
      <Double Name="ZoneLength"/>
      <Integer Name="GridOnLength"/>
      <Integer Name="GridOnWidth"/>
      <Integer Name="GridCount"/>
      <Double Name="GridLength"/>
      <Double Name="GridWidth"/>
      <String Name="EndZone"/>
      <Double Name="ZoneTemperature"/>
      <Double Name="ZoneHumidity"/>
      <Double Name="ZoneAvgSM"/>
      <Double Name="ZoneAvgLight"/>
      <String Name="CropType"/>
      <Date Name="SeedingDate" format="$SimpleDateFormat(dd-MM-yyyy)"/>
      <Date Name="LastFertilisationDate" format="$SimpleDateFormat(dd-MM-yyyy)"/>
      <String Name="HarvestingSeason"/>
      <Integer Name="NoOfPlants"/>
      <Double Name="VPD"/>
      <String Name="Live"/> <!-- Yes/No -->
      <Reference Name="LaneID" Type="Lane" Cardinality="1"/>
      <Reference Name="ZoneGrids"/>
</DataModel>

<DataModel Name="Grid">
      <Sid Name="GridID"/>
      <String Name="GridName"/>
      <BoundingBox Name="GridLocation"/>
      <Integer Name="GridNSPosition"/>
      <Integer Name="GridWEPosition"/>
      <Double Name="GridLength"/>
      <Double Name="GridWidth"/>
      <Double Name="SoilMoisture"/>
      <Double Name="AmbientLight"/>
      <Reference Name="ZoneID" Type="Zone" Cardinality="1"/>
</DataModel>
<AppModel Name="ExternalEnv">
      <Sid Name="ExternalEnvID"/>
      <Number Name="ExtTemperature"/>
      <Number Name="ExtHumidity"/>
      <Number Name="ExtLight"/>
      <Reference Name="GreenhouseID" Type="Greenhouse" Cardinality="1"/>
</AppModel>

<AppModel Name="InternalEnv">
      <Sid Name="InternalEnvID"/>
      <Number Name="IntTemperature"/>
      <Number Name="IntHumidity"/>
      <Number Name="IntLight"/>
      <Reference Name="GreenhouseID" Type="Greenhouse" Cardinality="1"/>
</AppModel>
<DataModel Name="AvgCityTemp">
      <Sid Name="Sid"/>
      <Number Name="Month"/>
      <Number Name="AvgMonthHighTemp"/>
      <Number Name="AvgMonthLowTemp"/>
</DataModel>
<DataModel Name="AvgCityHumidity">
      <Sid Name="Sid"/>
      <Number Name="Month" Modifiers="hidden"/>
      <Number Name="MorningHumidity"/>
      <Number Name="AfternoonHumidity"/>
</DataModel>
<DataModel Name="GHTempSensorCurrentTemp">
        <Sid Name="Sid"/>
        <String Name="TempSensorID"/>
        <Double Name="CurrentTemp"/>
        <Reference Name="GreenhouseID" Type="Greenhouse" Cardinality="1"/>
</DataModel>
    
<DataModel Name="GHHumiditySensorCurrentHumidity">
        <Sid Name="Sid"/>
        <String Name="HumiditySensorID"/>
        <Double Name="CurrentHumidity"/>
        <Reference Name="GreenhouseID" Type="Greenhouse" Cardinality="1"/>
</DataModel>

ThingModel and ThingFacets

Protocol Handlers Used: PERIF, UCAM, HTTP, PHID
Attach Things to Data using Simple References
Proxy Sensor Design Pattern (Single MCUThingFacet → All Sensors)
ThingFacets with Multiple Actions
ThingFacet to load Vendor-Specified MetaData

Greenhouse ThingModel and Facets

<ThingModel Name="GHHumiditySensor" Combines="GHHumiditySensorFacet">
      <Sid Name="SensorId"/>
      <Reference Name="GreenhouseID" Type="Greenhouse" Cardinality="1"/>
</ThingModel>

<ThingModel Name="GHTempSensor" Combines="GHTempSensorFacet">
      <Sid Name="sensorId"/>
      <Reference Name="GreenhouseID" Type="Greenhouse" Cardinality="1"/>
</ThingModel>

<ThingModel Name="ServoMotorDevice" combines="ServoMotor">
      <Sid Name="ServoID"/>
</ThingModel>
 
<ThingModel Name="HumiditySensor" Combines="HumiditySensorFacetNS">
      <Sid Name="sensorId"/>
      <Reference Name="ZoneID" Type="Zone" Cardinality="1"/>
</ThingModel>
<ThingModel Name="Heater">
      <Sid Name="HeaterID"/>
      <String Name="OnOffState"/>
      <Integer Name="HeatingLevel"/>
      <Reference Name="ZoneID" Type="Zone" Cardinality="1"/>
</ThingModel> 
<ThingModel Name="LightModel" Combines="LightFacetNS">
      <Sid Name="LightID"/>
      <Reference Name="GridID" Type="Grid" Cardinality="1"/>
</ThingModel>
<ThingModel Name="AmbientLightSensorModel" Combines="AmbientLightSensorFacetNS">
      <Sid Name="AmbientLightID"/>
      <Reference Name="GridID" Type="Grid" Cardinality="1"/>
</ThingModel>
<ThingModel Name="IrrigationNozzleModel" Combines="IrrigationNozzleFacetNS">
      <Sid Name="IrrigationNozzleID"/>
      <Reference Name="GridID" Type="Grid" Cardinality="1"/>
</ThingModel>
<ThingModel Name="MCUSensorModel" combines="MCUSensorFacet">
		<Sid Name="SensorId"/>
</ThingModel>

Macros

Pipeline Macros - ExecuteQuery, ScheduleJob, UnScheduleJob, SubscribeToTQL
Greenhouse Creation (Bulk Initialization)
Simulate Sensors & Actuators
Internal Activation of ThingFacets

Greenhouse Macros

<Macro Name="ExecuteQuery">
  <Argument>
    <QueryString>
      <Query/>
    </QueryString>
  </Argument>
  <Result>
    <OnRequest Target="[:RuntimeParams.FacetIDName:]" Disable="CMD_SERVER">
      <Process Return="CMD_NOP">
        <Message>
          <Value>
            [:$Macro.Argument.QueryString:]
          </Value>
        </Message>
      </Process>
    </OnRequest>
  </Result>
</Macro>

Gateway Setup

The gateway selected for the Greenhouse setup is ADVANTECH UTX-3115 sold by Intel
Operating System: Running Wind River Linux [Linux WR-IDP-689C 3.14.56_IDP-XT_3.1-WR7.0.0.11_idp].
This gateway represents 1 zone and 1 Grid

How things are connected to Gateways

Gateway Type	Things	Protocol	Zone
Intel ADVANTECH	Ambient Light Sensor	Xbee/Serial
Intel ADVANTECH	Soil Sensor	Xbee/Serial
Intel ADVANTECH	Light	Xbee/IP
Intel ADVANTECH	Irrigation Nozzle (Selonoid)	Xbee/Serial
Intel ADVANTECH	Temperature Sensor	Xbee/Serial
Intel ADVANTECH	Humidity Sensor	Xbee/Serial
Raspberry Pi - 3	Camera	UCAM/Serial
TQLEngine	Heater	-	Simulated
Intel ADVANTECH	Irrigation Motor	PHID/Serial

Cloud Setup (AWS)

TQLEngine running in Private Subnet of VPC with Elastic IP Address
Simply follow Download and install Atomiton Stack Steps.
Import the Greenhouse Models

Initialization Variation

Cloud Initialization

None
Wait and watch!

Live Gateway Init

We only need to Initialize one things and data for 1 zone

Live Gateway - Init Queries

<Query>
  <DeleteAll format="version,current">
    <Greenhouse>
      <GreenhouseID ne=""/>
    </Greenhouse>
  </DeleteAll>
  <Create>
    <Greenhouse>
      <GreenhouseID>
        livegreenhouse
      </GreenhouseID>
      <GreenhouseName>
        Intel-GreenHouse
      </GreenhouseName>
      <BoundingBox>
        <Vertex1>
          0

        </Vertex1>

        <Vertex2>

          0

        </Vertex2>

        <Vertex3>

          110

        </Vertex3>

        <Vertex4>

          40

        </Vertex4>

      </BoundingBox>

      <LaneCount>

        3

      </LaneCount>

      <LaneWidth>

        110

      </LaneWidth>

      <ZoneLength>

        10

      </ZoneLength>

      <ZoneInLane>

        5

      </ZoneInLane>

      <ZoneCount>

        15

      </ZoneCount>

      <GHLength>

        110

      </GHLength>

      <GHWidth>

        40

      </GHWidth>

      <ExternalEnv>

        <Temperature>

          26

        </Temperature>

        <Humidity>

          53

        </Humidity>

        <Light>

          1

        </Light>

        <SoilMoisture>

          20

        </SoilMoisture>

        <Wind>

          19.5

        </Wind>

      </ExternalEnv>

      <InternalEnv>

        <Temperature>

          20

        </Temperature>

        <Humidity>

          53

        </Humidity>

        <Light>

          1

        </Light>

        <SoilMoisture>

          1

        </SoilMoisture>

      </InternalEnv>

      <GHLanes>

      </GHLanes>

      <SunnyDay>

        True

      </SunnyDay>

      <Location>

        <latitude>

          37.3718999

        </latitude>

        <longitude>

          -122.0022377

        </longitude>

      </Location>

    </Greenhouse>

  </Create>

  <DeleteAll format="version,current">

    <Lane>

      <LaneID ne=""/>

    </Lane>

  </DeleteAll>

  <Create>

    <Lane>

      <LaneID>

        livelane

      </LaneID>

      <GreenhouseID>

        livegreenhouse

      </GreenhouseID>

      <LaneName>

        lane-1

      </LaneName>

      <LaneLength>

        5

      </LaneLength>

      <LaneWidth>

        1

      </LaneWidth>

      <ZoneInLane>

        4

      </ZoneInLane>

      <BorderLane>

        1

      </BorderLane>

      <BoundingBox>

        <Vertex1>

          5

        </Vertex1>

        <Vertex2>

          28

        </Vertex2>

        <Vertex3>

          105

        </Vertex3>

        <Vertex4>

          38

        </Vertex4>

      </BoundingBox>

    </Lane>

  </Create>

  <DeleteAll format="version,current">

    <Zone>

      <ZoneID ne=""/>

    </Zone>

  </DeleteAll>

  <Create>

    <Zone>

      <ZoneID>

        livezone

      </ZoneID>

      <ZoneName>

        Intel-Zone

      </ZoneName>

      <LaneID>

        livelane

      </LaneID>

      <ZoneLength>

        1

      </ZoneLength>

      <ZoneWidth>

        1

      </ZoneWidth>

      <ZoneLocation>

        <Vertex1>

          1

        </Vertex1>

        <Vertex2>

          1

        </Vertex2>

        <Vertex3>

          1

        </Vertex3>

        <Vertex4>

          1

        </Vertex4>

      </ZoneLocation>

      <EndZone>

        endzone

      </EndZone>

      <GridOnLength>

        1

      </GridOnLength>

      <GridOnWidth>

        1

      </GridOnWidth>

      <GridCount>

        1

      </GridCount>

      <GridLength>

        1

      </GridLength>

      <GridWidth>

        1

      </GridWidth>

      <ZoneTemperature>

        26

      </ZoneTemperature>

      <ZoneHumidity>

        53

      </ZoneHumidity>

      <ZoneAvgSM>

        20

      </ZoneAvgSM>

      <ZoneAvgLight>

        2

      </ZoneAvgLight>

      <CropType>

        Apple

      </CropType>

      <SeedingDate>

        11-04-2016

      </SeedingDate>

      <LastFertilisationDate>

        14-04-2016

      </LastFertilisationDate>

      <HarvestingSeason>

        April

      </HarvestingSeason>

      <NoOfPlants>

        5

      </NoOfPlants>

      <VPD>

        0

      </VPD>

      <Location>

        <latitude>

          1.11

        </latitude>

        <longitude>

          1.12

        </longitude>

      </Location>

      <Live>

        yes

      </Live>

    </Zone>

  </Create>

  <DeleteAll format="version,current">

    <Grid>

      <GridID ne=""/>

    </Grid>

  </DeleteAll>

  <Create>

    <Grid>

      <GridName>

        Intel-Grid

      </GridName>

      <GridID>

        livegrid

      </GridID>

      <ZoneID>

        livezone

      </ZoneID>

      <GridLength>

        1

      </GridLength>

      <GridWidth>

        1

      </GridWidth>

      <GridNSPosition>

        N

      </GridNSPosition>

      <GridWEPosition>

        E

      </GridWEPosition>

      <GridLocation>

        <Vertex1>

          1

        </Vertex1>

        <Vertex2>

          1

        </Vertex2>

        <Vertex3>

          1

        </Vertex3>

        <Vertex4>

          1

        </Vertex4>

      </GridLocation>

      <SoilMoisture>

        53

      </SoilMoisture>

      <AmbientLight>

        0

      </AmbientLight>

    </Grid>

  </Create>

  <DeleteAll format="version,current">

    <MCUSensorModel>

      <sensorId ne=""/>

    </MCUSensorModel>

  </DeleteAll>

  <Save format="version,current">

    <!-- This will read -->

    <MCUSensorModel>

      <PerifParams>

        <Peripheral>

          serial

        </Peripheral>

        <Baudrate>

          115200

        </Baudrate>

        <InterfacePort>

          /dev/ttyUSB0

        </InterfacePort>

        <Interface>

          serial

        </Interface>

        <Format>

          ascii

        </Format>

        <Operation>

          receive

        </Operation>

        <UniqueId>

          76522

        </UniqueId>
        <Payload>
          $Null()
        </Payload>
      </PerifParams>
      <SensorData>
        $Null()
      </SensorData>
      <InitSubscribers>
        true
      </InitSubscribers>
    </MCUSensorModel>
  </Save>

  <DeleteAll format="version,current">
    <TempSensor>
      <sensorId ne=""/>
    </TempSensor>
  </DeleteAll>
  <Create>
    <TempSensor>
      <TempValue>
        0
      </TempValue>
      <ZoneID>
        livezone
      </ZoneID>
    </TempSensor>
  </Create>

  <DeleteAll format="version,current">
    <SoilSensorModel>
      <SoilSensorID ne=""/>
    </SoilSensorModel>
  </DeleteAll>
  <Create>
    <SoilSensorModel>
      <SoilMoisture>
        0
      </SoilMoisture>
      <GridID>
        livegrid
      </GridID>
    </SoilSensorModel>
  </Create>

  <DeleteAll format="version,current">
    <HumiditySensor>
      <sensorId ne=""/>
    </HumiditySensor>
  </DeleteAll>
  <Create>
    <HumiditySensor>
      <HumidityValue>
        0
      </HumidityValue>
      <ZoneID>
        livezone
      </ZoneID>
    </HumiditySensor>
  </Create>

  <DeleteAll format="version,current">
    <AmbientLightSensorModel>
      <AmbientLightID ne=""/>
    </AmbientLightSensorModel>
  </DeleteAll>

  <Create>
    <AmbientLightSensorModel>
      <AmbientLight>
        0
      </AmbientLight>
      <GridID>
        livegrid
      </GridID>
    </AmbientLightSensorModel>
  </Create>

  <DeleteAll>
    <PhilipLightManagerModel>
      <ManagerId ne=""/>
    </PhilipLightManagerModel>
  </DeleteAll>

  <Create>
    <PhilipLightManagerModel>
      <LoadLights>
        True
      </LoadLights>
    </PhilipLightManagerModel>
  </Create>

  <DeleteAll>
    <IrrigationMotor>
      <DeviceInterfaceIndex eq="0"/>
    </IrrigationMotor>
  </DeleteAll>
  <Save format="version,current">
    <IrrigationMotor>
      <ZoneID>
        livezone
      </ZoneID>
      <ServoProtocolURL>
        phid://
      </ServoProtocolURL>
      <PhidgetDeviceType>
        PhidgetAdvancedServo
      </PhidgetDeviceType>
      <DeviceInterfaceIndex>
        0
      </DeviceInterfaceIndex>
      <ServoAngle>
        90
      </ServoAngle>
    </IrrigationMotor>
  </Save>

  <Find format="All">
    <LightModel>
      <LightNumber ne=""/>
    </LightModel>
  </Find>
  <SetResponseData>
    <Key>
      Message.Value.Find.Result.LightModel.GridID.Value
    </Key>
    <Value>
      livegrid
    </Value>
  </SetResponseData>
  <Save>
    <From>
      Result
    </From>
    <Include>
      $Response.Message.Value.Find
    </Include>
  </Save>
</Query>

MicroController (Pi) Init

We only need to initialize USB Camera and Data Model

Pi - Init Queries

<Query>
  <DeleteAll format="version,current">
    <Greenhouse>
      <GreenhouseID ne = ""/>
    </Greenhouse>
  </DeleteAll>
  <Create>
    <Greenhouse>
      <GreenhouseID>
        livegreenhouse
      </GreenhouseID>
      <GreenhouseName>
        Intel-GreenHouse
      </GreenhouseName>
      <BoundingBox>
        <Vertex1>
          0
        </Vertex1>
        <Vertex2>
          0
        </Vertex2>
        <Vertex3>
          110
        </Vertex3>
        <Vertex4>
          40
        </Vertex4>
      </BoundingBox>
      <LaneCount>
        3
      </LaneCount>
      <LaneWidth>
        110
      </LaneWidth>
      <ZoneLength>
        10
      </ZoneLength>
      <ZoneInLane>
        5
      </ZoneInLane>
      <ZoneCount>
        15
      </ZoneCount>
      <GHLength>
        110
      </GHLength>
      <GHWidth>
        40
      </GHWidth>
      <ExternalEnv>
        <Temperature>
          26
        </Temperature>
        <Humidity>
          53
        </Humidity>
        <Light>
          1
        </Light>
        <SoilMoisture>
          20
        </SoilMoisture>
        <Wind>
          19.5
        </Wind>
      </ExternalEnv>
      <InternalEnv>
        <Temperature>
          20
        </Temperature>
        <Humidity>
          53
        </Humidity>
        <Light>
          1
        </Light>
        <SoilMoisture>
          1
        </SoilMoisture>
      </InternalEnv>
      <GHLanes>
      </GHLanes>
      <SunnyDay>
        True
      </SunnyDay>
      <Location>
        <latitude>
          37.3718999
        </latitude>
        <longitude>
          -122.0022377
        </longitude>
      </Location>
    </Greenhouse>
  </Create>
  <DeleteAll format="version,current">
    <Lane>
      <LaneID ne = ""/>
    </Lane>
  </DeleteAll>
  <create>
    <Lane>
      <LaneID>
        livelane
      </LaneID>
      <GreenhouseID>
        livegreenhouse
      </GreenhouseID>
      <LaneName>
        lane-1
      </LaneName>
      <LaneLength>
        5
      </LaneLength>
      <LaneWidth>
        1
      </LaneWidth>
      <ZoneInLane>
        4
      </ZoneInLane>
      <BorderLane>
        1
      </BorderLane>
      <BoundingBox>
        <Vertex1>
          5
        </Vertex1>
        <Vertex2>
          28
        </Vertex2>
        <Vertex3>
          105
        </Vertex3>
        <Vertex4>
          38
        </Vertex4>
      </BoundingBox>
    </Lane>
  </create>
  <DeleteAll format="version,current">
    <Zone>
      <ZoneID ne = ""/>
    </Zone>
  </DeleteAll>
  <create>
    <Zone>
      <ZoneID>
        livezone
      </ZoneID>
      <ZoneName>
        Intel-Zone
      </ZoneName>
      <LaneID>
        livelane
      </LaneID>
      <ZoneLength>
        1
      </ZoneLength>
      <ZoneWidth>
        1
      </ZoneWidth>
      <ZoneLocation>
        <Vertex1>
          1
        </Vertex1>
        <Vertex2>
          1
        </Vertex2>
        <Vertex3>
          1
        </Vertex3>
        <Vertex4>
          1
        </Vertex4>
      </ZoneLocation>
      <EndZone>
        endzone
      </EndZone>
      <GridOnLength>
        1
      </GridOnLength>
      <GridOnWidth>
        1
      </GridOnWidth>
      <GridCount>
        1
      </GridCount>
      <GridLength>
        1
      </GridLength>
      <GridWidth>
        1
      </GridWidth>
      <ZoneTemperature>
        26
      </ZoneTemperature>
      <ZoneHumidity>
        53
      </ZoneHumidity>
      <ZoneAvgSM>
        20
      </ZoneAvgSM>
      <ZoneAvgLight>
        2
      </ZoneAvgLight>
      <CropType>
        Apple
      </CropType>
      <SeedingDate>
        11-04-2016
      </SeedingDate>
      <LastFertilisationDate>
        14-04-2016
      </LastFertilisationDate>
      <HarvestingSeason>
        April
      </HarvestingSeason>
      <NoOfPlants>
        5
      </NoOfPlants>
      <VPD>
        0
      </VPD>
      <Location>
        <latitude>
          1.11
        </latitude>
        <longitude>
          1.12
        </longitude>
      </Location>
      <Live>
        yes
      </Live>
    </Zone>
  </create>
  <DeleteAll format="version,current">
    <Grid>
      <GridID ne=""/>
    </Grid>
  </DeleteAll>
  <create>
    <Grid>
      <GridName>
        Intel-Grid
      </GridName>
      <GridID>
        livegrid
      </GridID>
      <ZoneID>
        livezone
      </ZoneID>
      <GridLength>
        1
      </GridLength>
      <GridWidth>
        1
      </GridWidth>
      <GridNSPosition>
        N
      </GridNSPosition>
      <GridWEPosition>
        E
      </GridWEPosition>
      <GridLocation>
        <Vertex1>
          1
        </Vertex1>
        <Vertex2>
          1
        </Vertex2>
        <Vertex3>
          1
        </Vertex3>
        <Vertex4>
          1
        </Vertex4>
      </GridLocation>
      <SoilMoisture>
        53
      </SoilMoisture>
      <AmbientLight>
        0
      </AmbientLight>
    </Grid>
  </create>
  <DeleteAll>
    <Camera>
      <CameraID ne=""/>
    </Camera>
  </DeleteAll>
  <Save>
    <Camera>
      <ZoneID>
        livezone
      </ZoneID>
      <Image>
        $Null()
      </Image>
      <USBCameraParameters>
        <Size>
          <Height>
            0
          </Height>
          <Width>
            0
          </Width>
        </Size>
        <Configuration>
          <Channel>
            0
          </Channel>
          <Standard>
            0
          </Standard>
          <Brightness>
            0
          </Brightness>
          <Contrast>
            0
          </Contrast>
          <Gamma>
            286
          </Gamma>
          <Saturation>
            65
          </Saturation>
          <Sharpness>
            6
          </Sharpness>
          <Hue>
            0
          </Hue>
          <Gain>
            0
          </Gain>
          <Quality>
          </Quality>
        </Configuration>
        <SaveToDisk>
          true
        </SaveToDisk>
        <ImageFormat>
          jpeg
        </ImageFormat>
        <ImageName>
          ucam_testpic.jpeg
        </ImageName>
      </USBCameraParameters>
    </Camera>
  </Save>
</Query>

Cluster Definition

Same Network definition in all the nodes participating in the cluster.

Create Network FacetInstance

<!-- Define Cluster / Network -->
<NewFacetInstance fid="cluster" name="cluster" type="SffNetworkFacet">
		<OnActivate>
			<Process>
				<Network>
					<Group name="GHCloudGroup" />
					<TqlEngine name="Cloud" url="ws://52.39.105.254:8080/fid-cluster"
						group="GHCloudGroup" documentation="GH Cloud Summary Holder" />
					<Group name="GHLiveGroup" />
					<TqlEngine name="GHLive" url="ws://10.0.1.35:8080/fid-cluster"
						group="GHEdgeGroup" replicateTo="GHCloudGroup" documentation="Live Holder" />
				</Network>
			</Process>
		</OnActivate>
		<OnOpen ModifyPipeline="WsServerExtensionArgs" />
</NewFacetInstance>

Attach the network facet to TQL Facet Type

Attach Network Facet to TQL Facet

<!-- Attach Network Facet to TQL Facet -->
<NewFacetInstance fid="[:RuntimeParams.FacetIDName:]"
		Name="TQL" Type="SffTqlFacet">
		<OnActivate>
			<Include>[:GetProjectModelsMacro:]</Include>
			<Include>[:InstantiateModelMacro:]</Include>
			<NewFacetInstance name="tqlwf" type="SffWdlFacet" />
			<TopicFacet>?TQLGenericTopic</TopicFacet>
			<NetworkFacet>?cluster</NetworkFacet>
    ....
</NewFacetInstance>