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我試圖從Firebase中的數據庫中讀取對象。我發現an example in GitHub using firebase-admin。我試圖做類似的時尚。當我嘗試在開發人員控制檯中的服務模擬器上對其進行測試時，它無法從Firebase訪問數據，並通過提及該服務已過期而終止。我不確定是否缺少任何步驟。在Alexa中訪問Firebase數據庫時服務超時
以下是東西，我沒有測試它：
我禁用在火力控制檯中的身份驗證，並使其成爲公衆。 我也嘗試過使用Firebase模塊和Firebase管理模塊，它的兩個選項都是相同的情況。 將AWS控制檯中的超時增加到2分鐘，但沒有幫助。
我也看了其他SO問題，但它沒有幫助解決這個問題。
下面是index.js我的代碼：
'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
}
請讓我知道，如果沒有人嘗試過。期待聽到您的建議。
這是AWS lambda嗎？你確定你正在使用lambda封裝回調嗎？發佈整個lambda源碼。如果節點事件循環停滯不前，您將收到超時。 – Mike
在調用dataRef.once（）之後，你期望發生什麼？你獲得了快照的價值，然後呢？它看起來不像你在這裏發佈你的整個功能。 –
嗨@Mike，是它的一個lamba功能。我更新了完整的代碼。不便之處敬請諒解。 – sur