javascript - 将 Netatmo 气象站连接到 Amazon Echo (Alexa)

Question

[下面已回答问题的完整教程。欢迎反馈!]

我正在尝试创建一个 AWS Lambda 函数以用于 Amazon Alexa 技能，以从我的 Netatmo 气象站获取天气信息。基本上，我需要通过 http 请求连接到 Netatmo 云。

这是我的代码片段，http 请求是为临时访问 token 完成的，请求没问题，但结果正文是正文:{"error":"invalid_request"}。这可能是什么问题？

var clientId = "";
var clientSecret = "";
var userId="a@google.ro"; 
var pass=""; 

function getNetatmoData(callback, cardTitle){
    var sessionAttributes = {};

    var formUserPass = { client_id: clientId, 
    client_secret: clientSecret, 
    username: userId, 
    password: pass, 
    scope: 'read_station', 
    grant_type: 'password' };

    shouldEndSession = false;
    cardTitle = "Welcome";
    speechOutput =""; 
    repromptText ="";

    var options = {
        host: 'api.netatmo.net',
        path: '/oauth2/token',
        method: 'POST',
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded',
            'client_id': clientId,
            'client_secret': clientSecret,
            'username': userId, 
            'password': pass, 
            'scope': 'read_station', 
            'grant_type': 'password'
        }
    };
    var req = http.request(options, function(res) {
            res.setEncoding('utf8');
            res.on('data', function (chunk) {
                console.log("body: " + chunk);

            });

            res.on('error', function (chunk) {
                console.log('Error: '+chunk);
            });

            res.on('end', function() {

                speechOutput = "Request successfuly processed."
                console.log(speechOutput);
                repromptText = ""
                callback(sessionAttributes, buildSpeechletResponse(cardTitle, speechOutput, repromptText, shouldEndSession));
            });

        });

        req.on('error', function(e){console.log('error: '+e)});

        req.end();
}

Answer 1

我让它运行起来了!这是一个快速演练:

1. 获取 Amazon AWS 的免费帐户。只要您的技能不是一直在运行(您将按 AWS 服务器上使用的运行时间和资源收费，每月大约有 700 个免费小时)，您应该不错，而且它会保持免费。该技能一次需要1-3秒的运行时间。

2. 在 Amazon Web Services (AWS) 中设置一个新的 lambda 函数。每次调用技能时都会执行此函数。

技能代码如下:

/**
*   Author: Mihai GALOS
*   Timestamp: 17:17:00, November 1st 2015  
*/

var http = require('https'); 
var https = require('https');
var querystring = require('querystring');

var clientId = ''; // create an application at https://dev.netatmo.com/ and fill in the generated clientId here
var clientSecret = ''; // fill in the client secret for the application
var userId= '' // your registration email address
var pass = '' // your account password


// 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);

        /**
         * Uncomment this if statement and populate with your skill's application ID to
         * prevent someone else from configuring a skill that sends requests to this function.
         */
        /*
        if (event.session.application.applicationId !== "amzn1.echo-sdk-ams.app.[unique-value-here]") {
             context.fail("Invalid Application ID");
         }
        */

        if (event.session.new) {
            onSessionStarted({requestId: event.request.requestId}, event.session);
        }

        if (event.request.type === "LaunchRequest") {
            onLaunch(event.request,
                     event.session,
                     function callback(sessionAttributes, speechletResponse) {
                        context.succeed(buildResponse(sessionAttributes, speechletResponse));
                     });
        }  else if (event.request.type === "IntentRequest") {
            onIntent(event.request,
                     event.session,
                     function callback(sessionAttributes, speechletResponse) {
                         context.succeed(buildResponse(sessionAttributes, speechletResponse));
                     });
        } else if (event.request.type === "SessionEndedRequest") {
            onSessionEnded(event.request, event.session);
            context.succeed();
        }
    } catch (e) {
        context.fail("Exception: " + e);
    }
};


function onSessionStarted(sessionStartedRequest, session) {
    console.log("onSessionStarted requestId=" + sessionStartedRequest.requestId +
            ", sessionId=" + session.sessionId);
}


function onLaunch(launchRequest, session, callback) {
    console.log("onLaunch requestId=" + launchRequest.requestId +
            ", sessionId=" + session.sessionId);

    // Dispatch to your skill's launch.

    getData(callback);

}


function onIntent(intentRequest, session, callback) {
    console.log("onIntent requestId=" + intentRequest.requestId +
            ", sessionId=" + session.sessionId);

    var intent = intentRequest.intent,
        intentName = intentRequest.intent.name;
    var intentSlots ;

    console.log("intentRequest: "+ intentRequest);  
    if (typeof intentRequest.intent.slots !== 'undefined') {
        intentSlots = intentRequest.intent.slots;
    }


     getData(callback,intentName, intentSlots);


}


function onSessionEnded(sessionEndedRequest, session) {
    console.log("onSessionEnded requestId=" + sessionEndedRequest.requestId +
            ", sessionId=" + session.sessionId);
    // Add cleanup logic here
}

// --------------- Functions that control the skill's behavior -----------------------

function doCall(payload, options, onResponse,
            callback, intentName, intentSlots){
    var response = ''
    var req = https.request(options, function(res) {
            res.setEncoding('utf8');

             console.log("statusCode: ", res.statusCode);
             console.log("headers: ", res.headers);


            res.on('data', function (chunk) {
                console.log("body: " + chunk);
                response += chunk;
            });

            res.on('error', function (chunk) {
                console.log('Error: '+chunk);
            });

            res.on('end', function() {
                var parsedResponse= JSON.parse(response);
                if (typeof onResponse !== 'undefined') {
                    onResponse(parsedResponse, callback, intentName, intentSlots);
                }
            });

        });

        req.on('error', function(e){console.log('error: '+e)});
        req.write(payload);

        req.end();

}

function getData(callback, intentName, intentSlots){



        console.log("sending request to netatmo...")

        var payload = querystring.stringify({
            'grant_type'    : 'password',
            'client_id'     : clientId,
            'client_secret' : clientSecret,
            'username'      : userId,
            'password'      : pass,
            'scope'         : 'read_station'
      });

        var options = {
            host: 'api.netatmo.net',
            path: '/oauth2/token',
            method: 'POST',
           headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
                'Content-Length': Buffer.byteLength(payload)
            }

        };

        //console.log('making request with data: ',options);

        // get token and set callbackmethod to get measure 
        doCall(payload, options, onReceivedTokenResponse, callback, intentName, intentSlots);
}

function onReceivedTokenResponse(parsedResponse, callback, intentName, intentSlots){

        var payload = querystring.stringify({
            'access_token'  : parsedResponse.access_token
      });

        var options = {
            host: 'api.netatmo.net',
            path: '/api/devicelist',
            method: 'POST',
           headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
                'Content-Length': Buffer.byteLength(payload)
            }

        };

    doCall(payload, options, getMeasure, callback, intentName, intentSlots);

}

function getMeasure(parsedResponse, callback, intentName, intentSlots){


         var data = {
                tempOut         : parsedResponse.body.modules[0].dashboard_data.Temperature,
                humOut          : parsedResponse.body.modules[0].dashboard_data.Humidity,
                rfStrengthOut   : parsedResponse.body.modules[0].rf_status,
                batteryOut      : parsedResponse.body.modules[0].battery_vp,

                tempIn      : parsedResponse.body.devices[0].dashboard_data.Temperature,
                humIn       : parsedResponse.body.devices[0].dashboard_data.Humidity,
                co2         : parsedResponse.body.devices[0].dashboard_data.CO2,
                press       : parsedResponse.body.devices[0].dashboard_data.Pressure,

                tempBedroom         : parsedResponse.body.modules[2].dashboard_data.Temperature,
                humBedroom          : parsedResponse.body.modules[2].dashboard_data.Temperature,
                co2Bedroom          : parsedResponse.body.modules[2].dashboard_data.CO2,
                rfStrengthBedroom   : parsedResponse.body.modules[2].rf_status,
                batteryBedroom      : parsedResponse.body.modules[2].battery_vp,

                rainGauge           : parsedResponse.body.modules[1].dashboard_data,
                rainGaugeBattery    : parsedResponse.body.modules[1].battery_vp
               };

    var repromptText = null;
    var sessionAttributes = {};
    var shouldEndSession = true;
    var speechOutput ;

    if( "AskTemperature" === intentName)  {

        console.log("Intent: AskTemperature, Slot:"+intentSlots.Location.value);

        if("bedroom" ===intentSlots.Location.value){
            speechOutput = "There are "+data.tempBedroom+" degrees in the bedroom.";

        }
        else if ("defaultall" === intentSlots.Location.value){
            speechOutput = "There are "+data.tempIn+" degrees inside and "+data.tempOut+" outside.";
        }

        if(data.rainGauge.Rain > 0) speechOutput += "It is raining.";
    } else if ("AskRain" === intentName){
        speechOutput = "It is currently ";
        if(data.rainGauge.Rain > 0) speechOutput += "raining.";
        else speechOutput += "not raining. ";

        speechOutput += "Last hour it has rained "+data.rainGauge.sum_rain_1+" millimeters, "+data.rainGauge.sum_rain_1+" in total today.";
    } else { // AskTemperature
        speechOutput = "Ok. There are "+data.tempIn+" degrees inside and "+data.tempOut+" outside.";

        if(data.rainGauge.Rain > 0) speechOutput += "It is raining.";
    }

        callback(sessionAttributes,
             buildSpeechletResponse("", speechOutput, repromptText, shouldEndSession));

}

// --------------- Helpers that build all of the responses -----------------------

function buildSpeechletResponse(title, output, repromptText, shouldEndSession) {
    return {
        outputSpeech: {
            type: "PlainText",
            text: output
        },
        card: {
            type: "Simple",
            title: "SessionSpeechlet - " + title,
            content: "SessionSpeechlet - " + output
        },
        reprompt: {
            outputSpeech: {
                type: "PlainText",
                text: repromptText
            }
        },
        shouldEndSession: shouldEndSession
    };
}

function buildResponse(sessionAttributes, speechletResponse) {
    return {
        version: "1.0",
        sessionAttributes: sessionAttributes,
        response: speechletResponse
    };
}

1. 转到 netatmo 的开发者网站 ( https://dev.netatmo.com/ ) 并创建一个新应用程序。这将是您与 Netatmo 端的传感器数据的接口(interface)。该应用程序将具有唯一 ID(即:5653769769f7411515036a0b)和客户端密码(即:T4nHevTcRbs053TZsoLZiH1AFKLZGb83Fmw9q)。 (不，这些数字不代表有效的客户端 ID 和密码，它们仅用于演示目的)

2. 在上面的代码中填写所需的凭据(netatmo 帐户用户和密码、客户端 ID 和密码)。

3. 转到亚马逊应用程序和服务 ( https://developer.amazon.com/edw/home.html )。在菜单中，选择 Alexa，然后选择 Alexa Skills Kit(点击开始)

4. 现在您需要创建一个新技能。给你的技能一个名字和调用。该名称将用于调用(或启动)应用程序。在 Endpoint 字段中，您需要输入之前创建的 lambda 函数的 ARN id。可以在右上角显示您的 lambda 函数的网页上找到此编号。它应该类似于:arn:aws:lambda:us-east-1:255569121831:function:[你的函数名称]。完成此步骤后，左侧会出现一个绿色复选标记以指示进度(进度菜单)。

5. 下一阶段涉及设置交互模型。它负责将话语映射到意图和位置。首先，意图模式。这是我的；复制粘贴此代码(并根据需要进行修改):

       {
   "intents": 
       [
           {
               "intent": "AskTemperature",
               "slots": [
                       {
                       "name": "Location",
                       "type": "LIST_OF_LOCATIONS"
                       }
               ]
           },
   
           {
               "intent": "AskCarbonDioxide",
               "slots": [
                       {
                       "name": "Location",
                       "type": "LIST_OF_LOCATIONS"
                       }
               ]
           },
            {
               "intent": "AskHumidity",
               "slots": [
                       {
                       "name": "Location",
                       "type": "LIST_OF_LOCATIONS"
                       }
               ]
           },
   
           {
               "intent": "AskRain",
               "slots": []
           },
   
           {
               "intent": "AskSound",
               "slots": []
           },
           {
               "intent": "AskWind",
               "slots": []
           },
   
           {
               "intent": "AskPressure",
               "slots": []
           }
   
   
       ]
   }
   

接下来，自定义插槽类型。单击添加插槽类型。给插槽命名

    LIST_OF_LOCATIONS and newline-separated : DefaultAll, Inside, Outside, Living, Bedroom, Kitchen, Bathroom, Alpha, Beta 

(用换行符替换逗号)

接下来，示例语句:

    AskTemperature what's the temperature {Location}
    AskTemperature what's the temperature in {Location}
    AskTemperature what's the temperature in the {Location}
    AskTemperature get the temperature {Location}
    AskTemperature get the temperature in {Location}
    AskTemperature get the temperature in the {Location}

    AskCarbonDioxide what's the comfort level {Location}
    AskCarbonDioxide what's the comfort level in {Location}
    AskCarbonDioxide what's the comfort level in the {Location}

    AskCarbonDioxide get the comfort level {Location}
    AskCarbonDioxide get the comfort level in {Location}
    AskCarbonDioxide get the comfort level in the {Location}


    AskHumidity what's the humidity {Location}
    AskHumidity what's the humidity in {Location}
    AskHumidity what's the humidity in the {Location}
    AskHumidity get the humidity {Location}
    AskHumidity get the humidity from {Location}
    AskHumidity get the humidity in {Location}
    AskHumidity get the humidity in the {Location}
    AskHumidity get humidity


    AskRain is it raining 
    AskRain did it rain
    AskRain did it rain today
    AskRain get rain millimeter count
    AskRain get rain

    AskSound get sound level
    AskSound tell me how loud it is

    AskWind is it windy 
    AskWind get wind
    AskWind get wind measures
    AskWind get direction
    AskWind get speed

    AskPressure get pressure
    AskPressure what's the pressure

1. 测试、描述和发布信息可以留空，除非您打算将您的技能发送到亚马逊以便公开。我把我的留空了。 :)

2. 快到了。您只需要启用新技能。转到 http://alexa.amazon.com/然后在左侧菜单中，选择技能。找到您的技能并单击启用。

3. 那个美妙的时刻。说“Alexa，打开[你的技能名称]。”默认情况下，室内和室外温度应从 netatmo 云中获取并由 Alexa 大声读出。你也可以说“Alexa，打开[你的技能名称]并获取卧室的温度。”。您可能已经注意到，“获取 [Location] 的温度”部分对应于您之前填写的示例语句。

4. 长寿富贵

好吧，很抱歉发了这么长的帖子。我希望这个小教程/演练有一天能对某人有所帮助。 :)