问题描述
在Alexa Skill kit中进行测试时，有时响应与最后一个响应相同，例如，如果我说打开灯，则表明光正在关闭，或者如果我说关闭灯，则表明其正在打开。基本上我也使用AWS IoT控制RaspBerry Pi的LED，但目前我正面临这个问题。我在lambda上部署的Node js代码如下。
var awsIot = require('aws-iot-device-sdk');
var host = "my host";
var topic = "$aws/things/lights/shadow/update";
var app_id = "my skill";
var deviceName = "lights";
var mqtt_config = {
"keyPath": "./certs/private.pem.key","certPath": "./certs/cert.pem.crt","caPath": "./certs/AmazonRootCA1.key","host": host,"port": 8883,"clientId": deviceName,"region":"eu-west-1","debug":true
};
var ctx = null;
var client = null;
// Route the incoming request based on type (LaunchRequest,IntentRequest,etc.) The JSON body of the request is provided in the event parameter.
exports.handler = function (event,context) {
try {
console.log("event.session.application.applicationId=" + event.session.application.applicationId);
ctx = context;
if (event.session.application.applicationId !== app_id) {
ctx.fail("Invalid Application ID");
}
client = awsIot.device(mqtt_config);
client.on("connect",function(){
console.log("Connected to AWS IoT");
});
if (event.session.new) {
onSessionStarted({requestId: event.request.requestId},event.session);
}
if (event.request.type === "LaunchRequest") {
onLaunch(event.request,event.session);
} else if (event.request.type === "IntentRequest") {
onIntent(event.request,event.session);
} else if (event.request.type === "SessionEndedRequest") {
onSessionEnded(event.request,event.session);
ctx.succeed();
}
} catch (e) {
console.log("EXCEPTION in handler: " + e);
ctx.fail("Exception: " + e);
}
};
/**
* This function called when the session starts.
*/
function onSessionStarted(sessionStartedRequest,session) {
console.log("onSessionStarted requestId=" + sessionStartedRequest.requestId + ",sessionId=" + session.sessionId);
}
/**
*This function called when the user launches the skill
*/
function onLaunch(launchRequest,session,callback) {
console.log("onLaunch requestId=" + launchRequest.requestId + ",sessionId=" + session.sessionId);
// dispatch to your skill's launch.
getWelcomeResponse(callback);
}
/**
* This function called when the user specifies an intent for this skill.
*/
function onIntent(intentRequest,session ) {
console.log("onIntent requestId=" + intentRequest.requestId + ",sessionId=" + session.sessionId);
var intent = intentRequest.intent,intentName = intentRequest.intent.name;
console.log("REQUEST to string =" + JSON.stringify(intentRequest));
var callback = null;
// dispatch to your skill's intent handlers
if ("LightIntent" === intentName) {
lightIntent(intent,session);
}
else if ("LightIntentOff" === intentName){
lightIntentOff(intent,session);
}
else if("RoomLightIntent" === intentName)
{
roomLightIntent(intent,session);
}
else
{
throw "Invalid intent";
}
}
/**
* This function called when the user ends the session.
*/
function onSessionEnded(sessionEndedRequest,session) {
console.log("onSessionEnded requestId=" + sessionEndedRequest.requestId + ",sessionId=" + session.sessionId);
}
// --------------- Functions that control the skill's behavior -----------------------
function getWelcomeResponse() {
// If we wanted to initialize the session to have some attributes we Could add those here.
var sessionAttributes = {};
var cardTitle = "Welcome";
var speechOutput = "Welcome to the Smart Caravan";
var repromptText = "Please tell hymer assistant your command.";
var shouldEndSession = false;
ctx.succeed(buildresponse(sessionAttributes,buildSpeechletResponse(cardTitle,speechOutput,repromptText,shouldEndSession)));
}
function lightIntent(intent,callback) {
var repromptText = null;
var sessionAttributes = {};
var shouldEndSession = false;
var speechOutput = "";
repromptText = "Hope,the lights are on";
var task = intent.slots.Task.value;
var validTasks = ["turn on light","turn on the light"];
if (validTasks.indexOf(task) == -1)
{
speechOutput = "Couldn't understand the command -> lightIntent";
ctx.succeed(buildresponse(sessionAttributes,shouldEndSession)));
}
else
{
var cardTitle = "Turning Lights On" ;
speechOutput = "Turning Lights On" ;
mqttPublish(intent,sessionAttributes,cardTitle,shouldEndSession);
}
}
function lightIntentOff(intent,the lights are off";
var taskoff = intent.slots.Taskoff.value;
var validTasksOff = ["turn off light","turn off the light"];
if (validTasksOff.indexOf(taskoff) == -1)
{
speechOutput = "Couldn't understand the command -> lightIntentOff";
ctx.succeed(buildresponse(sessionAttributes,shouldEndSession)));
}
else
{
var cardTitle = "Turning Lights Off" ;
speechOutput = "Turning Lights Off" ;
mqttPublish(intent,shouldEndSession);
}
}
function roomLightIntent(intent,the lights are on";
var roomtask = intent.slots.RoomTask.value;
var RoomvalidTasks = ["turn on room light","turn on the room light"];
if (RoomvalidTasks.indexOf(roomtask) == -1)
{
speechOutput = "Couldn't understand the command -> roomLightIntent";
ctx.succeed(buildresponse(sessionAttributes,shouldEndSession)));
}
else
{
var cardTitle = "Turning room Lights On" ;
speechOutput = "Turning room Lights On" ;
mqttPublish(intent,shouldEndSession);
}
}
function mqttPublish(intent,shouldEndSession)
{
var strIntent = JSON.stringify(intent);
console.log("mqttPublish: INTENT text = " + strIntent);
client.publish(topic,strIntent,function() {
client.end();
});
client.on("close",(function () {
console.log("MQTT CLIENT CLOSE - successfully. ");
ctx.succeed(buildresponse(sessionAttributes,shouldEndSession)));
}));
client.on("error",(function (err,granted) {
console.log("MQTT CLIENT ERROR!! " + err);
}));
}
// --------------- Helpers that build all of the responses -----------------------
function buildSpeechletResponse(title,output,shouldEndSession) {
return {
outputSpeech: {
type: "PlainText",text: output
},card: {
type: "Simple",title: title,content: output
},reprompt: {
outputSpeech: {
type: "PlainText",text: repromptText
}
},shouldEndSession: shouldEndSession
};
}
function buildresponse(sessionAttributes,speechletResponse) {
return {
version: "1.0",sessionAttributes: sessionAttributes,response: speechletResponse
};
}
Alexa Skill kit JSON如下。我有三个意图，分别具有不同的插槽和三种插槽类型。
{
"interactionModel": {
"languageModel": {
"invocationName": "hymer assistant","modelConfiguration": {
"fallbackIntentSensitivity": {
"level": "LOW"
}
},"intents": [
{
"name": "AMAZON.FallbackIntent","samples": []
},{
"name": "AMAZON.CancelIntent",{
"name": "AMAZON.HelpIntent",{
"name": "AMAZON.StopIntent",{
"name": "AMAZON.NavigateHomeIntent",{
"name": "AMAZON.MoreIntent",{
"name": "AMAZON.NavigateSettingsIntent",{
"name": "AMAZON.NextIntent",{
"name": "AMAZON.PageUpIntent",{
"name": "AMAZON.PageDownIntent",{
"name": "AMAZON.PrevIoUsIntent",{
"name": "AMAZON.ScrollRightIntent",{
"name": "AMAZON.ScrollDownIntent",{
"name": "AMAZON.ScrollLeftIntent",{
"name": "AMAZON.ScrollUpIntent",{
"name": "LightIntent","slots": [
{
"name": "Task","type": "LIST_OF_TASKS"
}
],"samples": [
"{Task}"
]
},{
"name": "LightIntentOff","slots": [
{
"name": "Taskoff","type": "LIST_TASKS_OFF"
}
],"samples": [
"{Taskoff}"
]
},{
"name": "RoomLightIntent","slots": [
{
"name": "RoomTask","type": "LIST_ROOM_TASKS"
}
],"samples": [
" {RoomTask}"
]
}
],"types": [
{
"name": "LIST_OF_TASKS","values": [
{
"name": {
"value": "turn on light"
}
},{
"name": {
"value": "turn on the light"
}
}
]
},{
"name": "LIST_TASKS_OFF","values": [
{
"name": {
"value": "turn off the light"
}
},{
"name": {
"value": "turn off Light"
}
}
]
},{
"name": "LIST_ROOM_TASKS","values": [
{
"name": {
"value": "turn on the room light"
}
},{
"name": {
"value": "turn on room light"
}
}
]
}
]
}
}
}
解决方法
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