Merge pull request #1116 from jackchi/healthcheck-outlet

[CHF-204] Implementation of PING in SmartPower Outlet

devicetypes/smartthings/smartpower-outlet.src/smartpower-outlet.groovy

@@ -101,6 +101,12 @@ def parse(String description) {
 		else {
 			def descriptionText = finalResult.value == "on" ? '{{ device.displayName }} is On' : '{{ device.displayName }} is Off'
 			sendEvent(name: finalResult.type, value: finalResult.value, descriptionText: descriptionText, translatable: true)
+			// Temporary fix for the case when Device is OFFLINE and is connected again
+			if (state.lastOnOff == null){
+				state.lastOnOff = now()
+				sendEvent(name: "deviceWatch-lastActivity", value: state.lastOnOff, description: "Last Activity is on ${new Date(state.lastOnOff)}", displayed: false, isStateChange: true)
+			}
+			state.lastOnOff = now()
 		}
 	}
 	else {
@@ -116,9 +122,24 @@ def off() {
 def on() {
 	zigbee.on()
 }
+/**
+ * PING is used by Device-Watch in attempt to reach the Outlet
+ * */
+def ping() {
+
+	// send read attribute onOFF if the last time we heard from the outlet is outside of the checkInterval
+	if (state.lastOnOff < (now() - (1000 * device.currentValue("checkInterval"))) ){
+		log.info "ping, alive=no, lastOnOff=${new Date(state.lastOnOff)}"
+		state.lastOnOff = null
+		return zigbee.onOffRefresh()
+	} else { // if the last onOff activity is within the checkInterval we artificially create a Device-Watch event
+		log.info "ping, alive=yes, lastOnOff=${new Date(state.lastOnOff)}"
+		sendEvent(name: "deviceWatch-lastActivity", value: state.lastOnOff, description: "Last Activity is on ${new Date(state.lastOnOff)}", displayed: false, isStateChange: true)
+	}
+}
 
 def refresh() {
-	zigbee.onOffRefresh() + zigbee.refreshData("0x0B04", "0x050B")
+	zigbee.onOffRefresh() + zigbee.electricMeasurementPowerRefresh()
 }
 
 def configure() {