MSA-1371: Its a prototype for connecting the largest T (Car) in the IoT eco-system

Gwu exception handling

devicetypes/smartthings/zwave-door-window-sensor.src/zwave-door-window-sensor.groovy

@@ -29,6 +29,7 @@ metadata {
 		fingerprint deviceId: "0x0701", inClusters: "0x5E,0x86,0x72,0x98", outClusters: "0x5A,0x82"
 		fingerprint deviceId: "0x0701", inClusters: "0x5E,0x80,0x71,0x85,0x70,0x72,0x86,0x30,0x31,0x84,0x59,0x73,0x5A,0x8F,0x98,0x7A", outClusters:"0x20" // Philio multi+
 		fingerprint deviceId: "0x0701", inClusters: "0x5E,0x72,0x5A,0x80,0x73,0x86,0x84,0x85,0x59,0x71,0x70,0x7A,0x98" // Vision door/window
+		fingerprint deviceId: "0x0701", inClusters: "0x5E,0x98,0x86,0x72,0x5A,0x85,0x59,0x73,0x80,0x71,0x31,0x70,0x84,0x7A" // Vision Motion
 	}
 
 	// simulator metadata
@@ -263,5 +264,9 @@ def retypeBasedOnMSR() {
 			log.debug "Changing device type to Door / Window Sensor Plus (SG)"
 			setDeviceType("Door / Window Sensor Plus (SG)")
 			break
+		case "0109-2002-0205": // Vision Motion
+			log.debug "Changing device type to Vision Motion Sensor Plus (SG)"
+			setDeviceType("Vision Motion Sensor Plus (SG)")
+			break
 	}
 }

smartapps/cloudcar/cloudcar.src/cloudcar.groovy

@@ -0,0 +1,333 @@
+/**
+ *  CCTest
+ *
+ *  Copyright 2016 Kuldip
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ *  in compliance with the License. You may obtain a copy of the License at:
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
+ *  on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
+ *  for the specific language governing permissions and limitations under the License.
+ *
+ */
+definition(
+    name: "CloudCar",
+    namespace: "CloudCar",
+    author: "Kuldip@CloudCar",
+    description: "Connect Car and Home",
+    category: "Convenience",
+    iconUrl: "http://justdrive.net/wp-content/themes/justdrive/assets/img/jd-logo-sans.png",
+    iconX2Url: "http://justdrive.net/wp-content/themes/justdrive/assets/img/jd-logo-sans.png",
+    iconX3Url: "http://justdrive.net/wp-content/themes/justdrive/assets/img/jd-logo-sans.png",
+    oauth: [displayName: "CloudCar", displayLink: "https://CloudCar.com"]
+)
+
+preferences {
+    section ("Control your home while driving your car") {
+                input "switches", "capability.switch", title: "Which Switches?", multiple: true, required: false
+                input "motionSensors", "capability.motionSensor", title: "Which Motion Sensors?", multiple: true, required: false
+                input "contactSensors", "capability.contactSensor", title: "Which Contact Sensors?", multiple: true, required: false
+                input "presenceSensors", "capability.presenceSensor", title: "Which Presence Sensors?", multiple: true, required: false
+                input "temperatureSensors", "capability.temperatureMeasurement", title: "Which Temperature Sensors?", multiple: true, required: false
+                input "accelerationSensors", "capability.accelerationSensor", title: "Which Vibration Sensors?", multiple: true, required: false
+                input "waterSensors", "capability.waterSensor", title: "Which Water Sensors?", multiple: true, required: false
+                input "lightSensors", "capability.illuminanceMeasurement", title: "Which Light Sensors?", multiple: true, required: false
+                input "humiditySensors", "capability.relativeHumidityMeasurement", title: "Which Relative Humidity Sensors?", multiple: true, required: false
+                input "alarms", "capability.alarm", title: "Which Sirens?", multiple: true, required: false
+                input "locks", "capability.lock", title: "Which Locks?", multiple: true, required: false
+    }
+}
+
+mappings {
+    path("/scan") {
+        action: [
+            GET: "scanDevices"
+        ]
+    }
+    path("/control/:command") {
+        action: [
+            GET: "updateSwitches"
+        ]
+    }
+    path("/control/:deviceType/:deviceId/:command") {
+        action: [
+            GET: "updateDevice"
+        ]
+    }
+}
+
+def installed() {
+    log.debug "[installed]: state ${state}"
+    initialize ()
+}
+
+def uninstalled() {
+        log.debug "[uninstalled]: ${settings}"
+}
+
+def updated () {
+	log.debug "[updated]: ${settings}"
+    unsubscribe()
+    initialize ()
+}
+
+def initialize () {
+    state.clear() // clear previous state - state is loaded from persistant store
+    addSubscription()
+}
+ 
+def addSubscription() {
+	def callbackUrl = 'http://ec2-54-67-21-37.us-west-1.compute.amazonaws.com/notify' //data.callbackUrl
+    log.debug "[addSubscription]  state ${state}"
+    log.debug "[addSubscription]  settings ${settings}"
+	settings.each {
+		log.debug "[addSubscription]  settings ${it}"
+    }
+    
+    def currentDeviceIds = settings.collect { k, devices -> devices }.flatten().collect()// { it.id }.unique()
+    log.debug "[addSubscription]  currentDeviceIds  ${currentDeviceIds}"
+	currentDeviceIds.each {
+        log.debug "[addSubscription]  device ids ${it} - ${it.id}"
+        log.debug "Adding switch subscription " + callbackUrl
+		state[it.id] = [callbackUrl: callbackUrl]
+    }
+	subscribe(switches, "switch.on", mydeviceHandler)
+	subscribe(contactSensors, "contact.open", mydeviceHandler)
+    subscribe(motionSensors, "motion.active", mydeviceHandler)
+	log.debug "[addSubscription] COMPLETED ${state}"
+}
+
+def mydeviceHandler(evt) {
+	def callbackUrl = 'http://ec2-54-67-21-37.us-west-1.compute.amazonaws.com/notify' //data.callbackUrl
+	//def callbackUrl = 'https://testing.justdrive.cloudcar.com/notify/5c5dca5f-1b98-fff9-f111-8072b41c5fb3'
+	log.debug "[deviceHandler] $evt.displayName"
+	def deviceInfo = state[evt.deviceId]
+    log.debug "[deviceHandler] deviceInfo ${deviceInfo}"
+	if (deviceInfo) {
+		try {
+				httpPostJson(uri: callbackUrl, path: '',  body: [deviceId: evt.deviceId, deviceType: evt.name, deviceName: evt.displayName, value: evt.value]) {   
+				log.debug "[deviceHandler] Event data successfully posted"
+			}
+		} catch (groovyx.net.http.ResponseParseException e) {
+			log.debug("Error parsing payload ${e}")
+		}
+	} else {
+		log.debug "[deviceHandler] No subscribed device found"
+	}
+}
+
+
+def scanDevices() {
+        log.debug "[scandevices] ${type}"
+        [
+        switches: switches.collect{KPdevice(it,"switches")},
+        contactSensors: contacts.collect{KPdevice(it,"contactSensors")},
+        temperatures: temperatures.collect{KPdevice(it,"temperature")},
+        ]
+}
+
+private KPdevice(it, type) {
+	def device_state = null
+    log.debug "KPDevice it: ${it}"
+	if (it.currentValue("switch") == "on" ) {
+        device_state = [label:it.label, type:type, id:it.id]
+			for (attribute in it.supportedAttributes) {
+				device_state."${attribute}" = it.currentValue("${attribute}")
+			}
+		}
+		log.debug "KPdevice: ${device_state}"
+		device_state ? device_state : null
+}
+
+def void updateSwitches() {
+	// use the built-in request object to get the command parameter
+	def command = params.command
+	log.debug "updateSwitches: ${params.command}"
+    // all switches have the command
+    // execute the command on all switches
+    // (note we can do this on the array - the command will be invoked on every element
+
+    switch(command) {
+        case "on":
+            switches.on()
+            break
+        case "off":
+            switches.off()
+            break
+        default:
+            httpError(400, "$command is not a valid command for all switches specified")
+    }
+}
+
+def void updateDevice() {
+	// use the built-in request object to get the command parameter
+	def command = params.command
+    def deviceId = params.deviceId
+    def devices = settings[params.deviceType]
+
+    log.debug "[updateDevice] ${deviceId} - ${command} - ${devices}"
+    
+    // all switches have the command
+    // execute the command on all switches
+    // (note we can do this on the array - the command will be invoked on every element
+	def device = devices.find { it.id == deviceId }
+	if (!device) {
+		httpError(404, "Device not found")
+	} else {
+		device."$command"()
+	}
+}
+
+def list() {
+        log.debug "[PROD] list, params: ${params}"
+        def type = params.deviceType
+        settings[type]?.collect{deviceItem(it)} ?: []
+}
+
+def listStates() {
+        log.debug "[PROD] liststates, params: ${params}"
+        def type = params.deviceType
+        def attributeName = attributeFor(type)
+        settings[type]?.collect{deviceState(it, it.currentState(attributeName))} ?: []
+}
+
+def listSubscriptions() {
+        log.debug "[PROD] listSubscription, params: ${params}"
+        state
+}
+
+def update() {
+        def type = params.deviceType
+        def data = request.JSON
+        def devices = settings[type]
+        def device = settings[type]?.find { it.id == params.id }
+        def command = data.command
+
+        log.debug "[PROD] update, params: ${params}, request: ${data}, devices: ${devices*.id}"
+
+        if (!device) {
+                httpError(404, "Device not found")
+        }
+
+        if (validateCommand(device, type, command)) {
+                device."$command"()
+        } else {
+                httpError(403, "Access denied. This command is not supported by current capability.")
+        }
+}
+
+/**
+ * Validating the command passed by the user based on capability.
+
+ * @return boolean
+ */
+def validateCommand(device, deviceType, command) {
+        log.debug "[validatecommand] ${device} ${deviceType} ${command}"
+        def capabilityCommands = getDeviceCapabilityCommands(device.capabilities)
+        def currentDeviceCapability = getCapabilityName(deviceType)
+        if (capabilityCommands[currentDeviceCapability]) {
+                return command in capabilityCommands[currentDeviceCapability] ? true : false
+        } else {
+                // Handling other device types here, which don't accept commands
+                httpError(400, "Bad request.")
+        }
+}
+
+/**
+ * Need to get the attribute name to do the lookup. Only
+ * doing it for the device types which accept commands
+ * @return attribute name of the device type
+ */
+def getCapabilityName(type) {
+        log.debug "[getCapabilityName] ${type}"
+    switch(type) {
+                case "switches":
+                        return "Switch"
+                case "alarms":
+                        return "Alarm"
+                case "locks":
+                        return "Lock"
+                default:
+                        return type
+        }
+}
+
+/**
+ * Constructing the map over here of
+ * supported commands by device capability
+ * @return a map of device capability -> supported commands
+ */
+def getDeviceCapabilityCommands(deviceCapabilities) {
+        log.debug "[getDeviceCapabilities] ${deviceCapabilities}"
+        def map = [:]
+        deviceCapabilities.collect {
+                map[it.name] = it.commands.collect{ it.name.toString() }
+        }
+        return map
+}
+
+def show() {
+        def type = params.deviceType
+        def devices = settings[type]
+        def device = devices.find { it.id == params.id }
+
+        log.debug "[PROD] show, params: ${params}, devices: ${devices*.id}"
+        if (!device) {
+                httpError(404, "Device not found")
+        }
+        else {
+                def attributeName = attributeFor(type)
+                def s = device.currentState(attributeName)
+                deviceState(device, s)
+        }
+}
+
+def removeSubscription() {
+        def type = params.deviceType
+        def devices = settings[type]
+        def deviceId = params.id
+        def device = devices.find { it.id == deviceId }
+
+        log.debug "[PROD] removeSubscription, params: ${params}, request: ${data}, device: ${device}"
+        if (device) {
+                log.debug "Removing $device.displayName subscription"
+                state.remove(device.id)
+                unsubscribe(device)
+        }
+        log.info state
+}
+
+private deviceItem(it) {
+        log.debug "[deviceItem] ${it}"
+        it ? [id: it.id, label: it.displayName] : null
+
+}
+
+private deviceState(device, s) {
+        log.debug "[deviceState] ${device}: ${s}"
+        device && s ? [id: device.id, label: device.displayName, name: s.name, value: s.value, unixTime: s.date.time] : null
+}
+
+private attributeFor(type) {
+        log.debug "[attributeFor] ${type}"
+        switch (type) {
+                case "switches":
+                        log.debug "[PROD] switch type"
+                        return "switch"
+                case "locks":
+                        log.debug "[PROD] lock type"
+                        return "lock"
+                case "alarms":
+                        log.debug "[PROD] alarm type"
+                        return "alarm"
+                case "lightSensors":
+                        log.debug "[PROD] illuminance type"
+                        return "illuminance"
+                default:
+                        log.debug "[PROD] other sensor type"
+                        return "Sensors"
+        }
+}

smartapps/dianoga/netatmo-connect.src/netatmo-connect.groovy

@@ -337,10 +337,10 @@ def initialize() {
 
 	settings.devices.each {
 		def deviceId = it
-		def detail = state.deviceDetail[deviceId]
+		def detail = state?.deviceDetail[deviceId]
 
 		try {
-			switch(detail.type) {
+			switch(detail?.type) {
 				case 'NAMain':
 					log.debug "Base station"
 					createChildDevice("Netatmo Basestation", deviceId, "${detail.type}.${deviceId}", detail.module_name)
@@ -487,12 +487,12 @@ def poll() {
     log.debug "State: ${state.deviceState}"
 
 	settings.devices.each { deviceId ->
-		def detail = state.deviceDetail[deviceId]
-		def data = state.deviceState[deviceId]
-		def child = children.find { it.deviceNetworkId == deviceId }
+		def detail = state?.deviceDetail[deviceId]
+		def data = state?.deviceState[deviceId]
+		def child = children?.find { it.deviceNetworkId == deviceId }
 
 		log.debug "Update: $child";
-		switch(detail.type) {
+		switch(detail?.type) {
 			case 'NAMain':
 				log.debug "Updating NAMain $data"
 				child?.sendEvent(name: 'temperature', value: cToPref(data['Temperature']) as float, unit: getTemperatureScale())

smartapps/smartthings/gentle-wake-up.src/gentle-wake-up.groovy

@@ -39,6 +39,7 @@ preferences {
 	page(name: "completionPage")
 	page(name: "numbersPage")
 	page(name: "controllerExplanationPage")
+	page(name: "unsupportedDevicesPage")
 }
 
 def rootPage() {
@@ -47,6 +48,9 @@ def rootPage() {
 		section("What to dim") {
 			input(name: "dimmers", type: "capability.switchLevel", title: "Dimmers", description: null, multiple: true, required: true, submitOnChange: true)
 			if (dimmers) {
+				if (dimmersContainUnsupportedDevices()) {
+					href(name: "toUnsupportedDevicesPage", page: "unsupportedDevicesPage", title: "Some of your selected dimmers don't seem to be supported", description: "Tap here to fix it", required: true)
+				}
 				href(name: "toNumbersPage", page: "numbersPage", title: "Duration & Direction", description: numbersPageHrefDescription(), state: "complete")
 			}
 		}
@@ -71,6 +75,31 @@ def rootPage() {
 	}
 }
 
+def unsupportedDevicesPage() {
+
+	def unsupportedDimmers = dimmers.findAll { !hasSetLevelCommand(it) }
+
+	dynamicPage(name: "unsupportedDevicesPage") {
+		if (unsupportedDimmers) {
+			section("These devices do not support the setLevel command") {
+				unsupportedDimmers.each {
+					paragraph deviceLabel(it)
+				}
+			}
+			section {
+				input(name: "dimmers", type: "capability.sensor", title: "Please remove the above devices from this list.", submitOnChange: true, multiple: true)
+			}
+			section {
+				paragraph "If you think there is a mistake here, please contact support."
+			}
+		} else {
+			section {
+				paragraph "You're all set. You can hit the back button, now. Thanks for cleaning up your settings :)"
+			}
+		}
+	}
+}
+
 def controllerExplanationPage() {
 	dynamicPage(name: "controllerExplanationPage", title: "How To Control Gentle Wake Up") {
 
@@ -528,14 +557,16 @@ def updateDimmers(percentComplete) {
 		} else {
 
 			def shouldChangeColors = (colorize && colorize != "false")
-			def canChangeColors = hasSetColorCommand(dimmer)
 
-			log.debug "Setting ${deviceLabel(dimmer)} to ${nextLevel}"
-
-			if (shouldChangeColors && canChangeColors) {
-				dimmer.setColor([hue: getHue(dimmer, nextLevel), saturation: 100, level: nextLevel])
-			} else {
+			if (shouldChangeColors && hasSetColorCommand(dimmer)) {
+				def hue = getHue(dimmer, nextLevel)
+				log.debug "Setting ${deviceLabel(dimmer)} level to ${nextLevel} and hue to ${hue}"
+				dimmer.setColor([hue: hue, saturation: 100, level: nextLevel])
+			} else if (hasSetLevelCommand(dimmer)) {
+				log.debug "Setting ${deviceLabel(dimmer)} level to ${nextLevel}"
 				dimmer.setLevel(nextLevel)
+			} else {
+				log.warn "${deviceLabel(dimmer)} does not have setColor or setLevel commands."
 			}
 
 		}
@@ -817,24 +848,21 @@ private getRedHue(level) {
 	if (level >= 96) return 17
 }
 
+private dimmersContainUnsupportedDevices() {
+	def found = dimmers.find { hasSetLevelCommand(it) == false }
+	return found != null
+}
+
 private hasSetLevelCommand(device) {
-	def isDimmer = false
-	device.supportedCommands.each {
-		if (it.name.contains("setLevel")) {
-			isDimmer = true
-		}
-	}
-	return isDimmer
+	return hasCommand(device, "setLevel")
 }
 
 private hasSetColorCommand(device) {
-	def hasColor = false
-	device.supportedCommands.each {
-		if (it.name.contains("setColor")) {
-			hasColor = true
-		}
-	}
-	return hasColor
+	return hasCommand(device, "setColor")
+}
+
+private hasCommand(device, String command) {
+	return (device.supportedCommands.find { it.name == command } != null)
 }
 
 private dimmersWithSetColorCommand() {
@@ -1073,4 +1101,4 @@ def hasStartLevel() {
 
 def hasEndLevel() {
 	return (endLevel != null && endLevel != "")
-}
+}

smartapps/smartthings/logitech-harmony-connect.src/logitech-harmony-connect.groovy

@@ -658,29 +658,73 @@ def updateDevice() {
 	def data = request.JSON
 	def command = data.command
 	def arguments = data.arguments
-
 	log.debug "updateDevice, params: ${params}, request: ${data}"
 	if (!command) {
 		render status: 400, data: '{"msg": "command is required"}'
 	} else {
 		def device = allDevices.find { it.id == params.id }
-		if (device) {
-        	if (device.hasCommand("$command")) {
-                if (arguments) {
-                    device."$command"(*arguments)
-                } else {
-                    device."$command"()
-                }
-                render status: 204, data: "{}"
-           	} else {
-				render status: 404, data: '{"msg": "Command not supported by this Device"}'
-			}
-		} else {
-			render status: 404, data: '{"msg": "Device not found"}'
-		}
+    if (device) {
+        if (validateCommand(device, command)) {
+            if (arguments) {
+                device."$command"(*arguments)
+            } else {
+                device."$command"()
+            }
+            render status: 204, data: "{}"
+        } else {
+          render status: 403, data: '{"msg": "Access denied. This command is not supported by current capability."}'
+        }
+    } else {
+      render status: 404, data: '{"msg": "Device not found"}'
+    }
+  }
+}
+
+/**
+ * Validating the command passed by the user based on capability.
+ * @return boolean
+ */
+def validateCommand(device, command) {
+	def capabilityCommands = getDeviceCapabilityCommands(device.capabilities)
+	def currentDeviceCapability = getCapabilityName(device)
+	if (currentDeviceCapability != "" && capabilityCommands[currentDeviceCapability]) {
+		return command in capabilityCommands[currentDeviceCapability] ? true : false
+	} else {
+		// Handling other device types here, which don't accept commands
+		httpError(400, "Bad request.")
 	}
 }
 
+/**
+ * Need to get the attribute name to do the lookup. Only
+ * doing it for the device types which accept commands
+ * @return attribute name of the device type
+ */
+def getCapabilityName(device) {
+    def capName = ""
+    if (switches.find{it.id == device.id})
+			capName = "Switch"
+		else if (alarms.find{it.id == device.id})
+			capName = "Alarm"
+		else if (locks.find{it.id == device.id})
+			capName = "Lock"
+    log.trace "Device: $device - Capability Name: $capName"
+		return capName
+}
+
+/**
+ * Constructing the map over here of
+ * supported commands by device capability
+ * @return a map of device capability -> supported commands
+ */
+def getDeviceCapabilityCommands(deviceCapabilities) {
+	def map = [:]
+	deviceCapabilities.collect {
+		map[it.name] = it.commands.collect{ it.name.toString() }
+	}
+	return map
+}
+
 def listSubscriptions() {
 	log.debug "listSubscriptions()"
 	app.subscriptions?.findAll { it.device?.device && it.device.id }?.collect {
@@ -780,17 +824,51 @@ def deviceHandler(evt) {
 
 def sendToHarmony(evt, String callbackUrl) {
 	def callback = new URI(callbackUrl)
-	def host = callback.port != -1 ? "${callback.host}:${callback.port}" : callback.host
-	def path = callback.query ? "${callback.path}?${callback.query}".toString() : callback.path
-	sendHubCommand(new physicalgraph.device.HubAction(
-		method: "POST",
-		path: path,
-		headers: [
-			"Host": host,
-			"Content-Type": "application/json"
-		],
-		body: [evt: [deviceId: evt.deviceId, name: evt.name, value: evt.value]]
-	))
+  if(isIP(callback.host)){
+  	def host = callback.port != -1 ? "${callback.host}:${callback.port}" : callback.host
+  	def path = callback.query ? "${callback.path}?${callback.query}".toString() : callback.path
+  	sendHubCommand(new physicalgraph.device.HubAction(
+  		method: "POST",
+  		path: path,
+  		headers: [
+  			"Host": host,
+  			"Content-Type": "application/json"
+  		],
+  		body: [evt: [deviceId: evt.deviceId, name: evt.name, value: evt.value]]
+  	))
+  } else {
+    def params = [
+      uri: callbackUrl,
+      body: [evt: [deviceId: evt.deviceId, name: evt.name, value: evt.value]]
+    ]
+    try {
+        log.debug "Sending data to Harmony Cloud: $params"
+        httpPostJson(params) { resp ->
+            log.debug "Harmony Cloud - Response: ${resp.status}"
+        }
+    } catch (e) {
+        log.error "Harmony Cloud - Something went wrong: $e"
+    }
+  }
+}
+
+public static boolean isIP(String str) {
+    try {
+         String[] parts = str.split("\\.");
+         if (parts.length != 4) return false;
+         for (int i = 0; i < 4; ++i) {
+             int p
+             try {
+               p = Integer.parseInt(parts[i]);
+             } catch (Exception e) {
+               return false;
+             }
+             if (p > 255 || p < 0) return false;
+         }
+         return true;
+    } catch (Exception e) {
+        return false;
+    }
 }
 
 def listHubs() {

smartapps/vlaminck/alfred-workflow.src/alfred-workflow.groovy

@@ -92,22 +92,87 @@ void updateLock() {
 
 private void updateAll(devices) {
 	def command = request.JSON?.command
-	if (command) {
-		devices."$command"()
+	def type = params.param1
+	if (!devices) {
+		httpError(404, "Devices not found")
+	}
+	
+	if (command){
+		devices.each { device ->
+			executeCommand(device, type, command)
+		}
 	}
 }
 
 private void update(devices) {
 	log.debug "update, request: ${request.JSON}, params: ${params}, devices: $devices.id"
 	def command = request.JSON?.command
-	if (command) {
-		def device = devices.find { it.id == params.id }
-		if (!device) {
-			httpError(404, "Device not found")
-		} else {
-			device."$command"()
-		}
+	def type = params.param1
+	def device = devices?.find { it.id == params.id }
+
+	if (!device) {
+		httpError(404, "Device not found")
 	}
+
+	if (command) {
+		executeCommand(device, type, command)
+	}
+}
+
+/**
+ * Validating the command passed by the user based on capability.
+ * @return boolean
+ */
+def validateCommand(device, deviceType, command) {
+	def capabilityCommands = getDeviceCapabilityCommands(device.capabilities)
+	def currentDeviceCapability = getCapabilityName(deviceType)
+	if (capabilityCommands[currentDeviceCapability]) {
+		return command in capabilityCommands[currentDeviceCapability] ? true : false
+	} else {
+		// Handling other device types here, which don't accept commands
+		httpError(400, "Bad request.")
+	}
+}
+
+/**
+ * Need to get the attribute name to do the lookup. Only
+ * doing it for the device types which accept commands
+ * @return attribute name of the device type
+ */
+def getCapabilityName(type) {
+    switch(type) {
+		case "switches":
+			return "Switch"
+		case "locks":
+			return "Lock"
+		default:
+			return type
+	}
+}
+
+/**
+ * Constructing the map over here of
+ * supported commands by device capability
+ * @return a map of device capability -> supported commands
+ */
+def getDeviceCapabilityCommands(deviceCapabilities) {
+	def map = [:]
+	deviceCapabilities.collect {
+		map[it.name] = it.commands.collect{ it.name.toString() }
+	}
+	return map
+}
+
+/**
+ * Validates and executes the command
+ * on the device or devices
+ */
+def executeCommand(device, type, command) {
+	if (validateCommand(device, type, command)) {
+		device."$command"()
+	} else {
+		httpError(403, "Access denied. This command is not supported by current capability.")
+	}	
 }
 
 private show(devices, name) {