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我试图从Firebase中的数据库中读取对象。我发现an example in GitHub using firebase-admin。我试图做类似的时尚。当我尝试在开发人员控制台中的服务模拟器上对其进行测试时，它无法从Firebase访问数据，并通过提及该服务已过期而终止。我不确定是否缺少任何步骤。在Alexa中访问Firebase数据库时服务超时
以下是东西，我没有测试它：
我禁用在火力控制台中的身份验证，并使其成为公众。 我也尝试过使用Firebase模块和Firebase管理模块，它的两个选项都是相同的情况。 将AWS控制台中的超时增加到2分钟，但没有帮助。
我也看了其他SO问题，但它没有帮助解决这个问题。
下面是index.js我的代码：
'use strict';
var Alexa = require('alexa-sdk');
// Initialize fireBase with a service account, granting admin privileges
var firebaseAdmin = require("firebase-admin");
firebaseAdmin.initializeApp({
credential: firebaseAdmin.credential.cert("firebase-auth.json"),
databaseURL: "https://alexa-595c9.firebaseio.com/"
});
var APP_ID = 'amzn1.ask.skill.13638113-6557-4cff-84d2-6d46e7f7539e';
var dataRef = firebaseAdmin.database().ref("Data");
exports.handler = function(event, context, callback) {
var alexa = Alexa.handler(event, context);
alexa.APP_ID = APP_ID;
// To enable string internationalization (i18n) features, set a resources object.
alexa.resources = languageStrings;
alexa.registerHandlers(handlers);
alexa.execute();
};
var handlers = {
//Use LaunchRequest, instead of NewSession if you want to use the one-shot model
// Alexa, ask [my-skill-invocation-name] to (do something)...
'LaunchRequest': function() {
this.attributes['speechOutput'] = this.t("WELCOME_MESSAGE", this.t("SKILL_NAME"));
// If the user either does not reply to the welcome message or says something that is not
// understood, they will be prompted again with this text.
this.attributes['repromptSpeech'] = this.t("WELCOME_REPROMT");
this.emit(':ask', this.attributes['speechOutput'], this.attributes['repromptSpeech'])
},
'QueryIntent': function() {
var speechOutput
var itemSlot = this.event.request.intent.slots.Item;
var itemName; // name of dataRequested
if (itemSlot && itemSlot.value) {
itemName = itemSlot.value.toLowerCase();
}
// Call to FireBase for data object
dataRef.once('value', function(snapshot) {
var firebaseData = snapshot.val();
console.log('Connection success');
console.log('snapshot:',snapshot,'firebasedata:',firebaseData);
var parsedItemName = parseSimilar(itemName);
switch(parsedItemName){
case "temperature":
speechOutput = "The board's " + itemName + " sensor reads: " + firebaseData.temp + " degrees fahrenheit.";
break;
case "light":
speechOutput = "The board's " + itemName + " sensor reads: " + firebaseData.light + " lumens.";
break;
case "memory":
speechOutput = "The board is using " + firebaseData.mem.globalUsed + firebaseData.mem.mallocUsed + " out of " + firebaseData.mem.systemAvail + " total memory blocks. Malloc is using " + firebaseData.mem.mallocUsed + " blocks, global space is using " + firebaseData.mem.globalUsed + " blocks and there are " + firebaseData.mem.mallocUsed + " availble malloc blocks.";
break;
case "button":
speechOutput = "The button press status is as follows: Button 1: " + firebaseData.sw[0] + ", Button 2: " + firebaseData.sw[1] + ", Button 3: " + firebaseData.sw[2] + ", and Button 4: " + firebaseData.sw[3] + ". ";
break;
case "task":
speechOutput = "The top three tasks using the most CPU are as follows: " + firebaseData.task[0].name + ". with " + firebaseData.task[0].percent + " percent... " + firebaseData.task[1].name + ". with " + firebaseData.task[1].percent + " percent... and " + firebaseData.task[2].name + ". with " + firebaseData.task[2].percent + " percent. ";
break;
case "accelerometer":
speechOutput = "The accelerometer reads: X: " + firebaseData.x + ". Y: " + firebaseData.y + ". and, Z: " + firebaseData.z + ". ";
break;
case "last update time":
speechOutput = "The last update was recieved on <say-as interpret-as=\"date\">" + firebaseData.date + "</say-as> at " + "<say-as interpret-as=\"time\">"+ firebaseData.time.substring(0,5) + "</say-as> . ";
break;
default:
speechOutput = null;
break;
}
if (speechOutput !== null) {
this.attributes['speechOutput'] = speechOutput;
this.attributes['repromptSpeech'] = this.t("RECIPE_REPEAT_MESSAGE");
this.emit(':askWithCard', this.attributes['speechOutput'], this.attributes['repromptSpeech'], cardTitle, speechOutput);
} else {
var speechOutput = this.t("RECIPE_NOT_FOUND_MESSAGE");
var repromptSpeech = this.t("RECIPE_NOT_FOUND_REPROMPT");
if (itemName) {
speechOutput += this.t("RECIPE_NOT_FOUND_WITH_ITEM_NAME", itemName);
} else {
speechOutput += this.t("RECIPE_NOT_FOUND_WITHOUT_ITEM_NAME");
}
speechOutput += repromptSpeech;
this.attributes['speechOutput'] = speechOutput;
this.attributes['repromptSpeech'] = repromptSpeech;
this.emit(':ask', speechOutput, repromptSpeech);
}
}.bind(this));
},
'AMAZON.HelpIntent': function() {
this.attributes['speechOutput'] = this.t("HELP_MESSAGE");
this.attributes['repromptSpeech'] = this.t("HELP_REPROMT");
this.emit(':ask', this.attributes['speechOutput'], this.attributes['repromptSpeech'])
},
'AMAZON.RepeatIntent': function() {
this.emit(':ask', this.attributes['speechOutput'], this.attributes['repromptSpeech'])
},
'AMAZON.StopIntent': function() {
this.emit('SessionEndedRequest');
},
'AMAZON.CancelIntent': function() {
this.emit('SessionEndedRequest');
},
'SessionEndedRequest':function() {
this.emit(':tell', this.t("STOP_MESSAGE", this.t("SKILL_NAME")));
}
};
var languageStrings = {
"en-US": {
"translation": {
"SKILL_NAME" : "MicroWatch",
"WELCOME_MESSAGE": "Welcome to %s. You can request SJOne board info by saying things like, 'what is the current temperature', or 'what is the current light value'... Now, what can I help you with?",
"WELCOME_REPROMT": "For a list of accepted commands, just say 'help'.",
"DISPLAY_CARD_TITLE": "%s - Value for %s.",
"HELP_MESSAGE": "You can say things like, 'what is the current temperature'... Or you can invoke the skill directly by saying 'Ask MicroWatch for the current temperature'... Now, what can I help you with?",
"HELP_REPROMT": "You can say things like, 'what is the current temperature', or you can say exit... Now, what can I help you with?",
"STOP_MESSAGE": "Thanks for using %s, Goodbye!",
"RECIPE_REPEAT_MESSAGE": "Try saying repeat.",
"RECIPE_NOT_FOUND_MESSAGE": "I'm sorry, I currently can't monitor ",
"RECIPE_NOT_FOUND_WITH_ITEM_NAME": "the %s. ",
"RECIPE_NOT_FOUND_WITHOUT_ITEM_NAME": "that parameter. ",
"RECIPE_NOT_FOUND_REPROMPT": "What else can I help with?"
}
}
};
function parseSimilar(item){
switch(item){
case "task usage":
item = "task";
break;
case "cpu usage":
item = "task";
break;
case "cpu":
item = "task";
break;
case "tasks":
item = "task";
break;
case "top tasks":
item = "task";
break;
case "top three tasks":
item = "task";
break;
case "last update":
item = "last update time";
break;
case "accel":
item = "accelerometer";
break;
default:
break;
}
return item
}
请让我知道，如果没有人尝试过。期待听到您的建议。
这是AWS lambda吗？你确定你正在使用lambda封装回调吗？发布整个lambda源码。如果节点事件循环停滞不前，您将收到超时。 – Mike
在调用dataRef.once（）之后，你期望发生什么？你获得了快照的价值，然后呢？它看起来不像你在这里发布你的整个功能。 –
嗨@Mike，是它的一个lamba功能。我更新了完整的代码。不便之处敬请谅解。 – sur