per esempio si parte dallo scaricare il progetto Basic Starter da SkillTemplates (ask new --template --url https://skilltemplates.com/templates.json)
Si crea quindi nella root del progetto (dove e' contenuta la directory Lambda per capirsi) una directory test e si inseriscono i seguenti tre files
test.js
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var lambda = require('../lambda/custom/index.js');
var context = require('./context.js');
var mockEvent = require('./event.json');
var mockContext = new context();
function callback(error, data) {
if(error) {
console.log('error: ' + error);
} else {
console.log(data);
}
}
lambda.handler(mockEvent, mockContext, callback);
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context.js
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module.exports = function() {
return {
succeed: function(result) {
console.log(JSON.stringify(result, null,'\t') );
},
fail: function(err) {
console.log(JSON.stringify(err, null,'\t') );
},
done: function(err, result) {
//console.log("CONTEXT DONE:", err, result);
},
functionName: 'local_functionName',
awsRequestId: 'local_awsRequestId',
logGroupName: 'local_logGroupName',
logStreamName: 'local_logStreamName',
clientContext: 'local_clientContext',
identity: {
cognitoIdentityId: 'local_cognitoIdentityId'
}
};
};
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event.json
-------------------------------------------------------------------{
"session": {
"new": false,
"sessionId": "mock_sessionId",
"application": {
"applicationId": "mock_applicationId"
},
"attributes": {},
"user": {
"userId": "mock_userId"
}
},
"request": {
"type": "LaunchRequest",
"requestId": "mock_requestId",
"locale": "en-US",
"timestamp": "2017-09-19T11:46:23Z"
},
"context": {
"AudioPlayer": {
"playerActivity": "IDLE"
},
"System": {
"application": {
"applicationId": "mock_applicationId"
},
"user": {
"userId": "mock_userId"
},
"device": {
"supportedInterfaces": {}
}
}
},
"version": "1.0"
}
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node.js
si ha come riposta
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response:
{ outputSpeech:
{ type: 'SSML',
ssml: '<speak>Hello there. What is your name?</speak>' },
reprompt: { outputSpeech: [Object] },
shouldEndSession: false,
card:
{ type: 'Simple',
title: 'Example Card Title',
content: 'Example card body content.' } },
userAgent: 'ask-node/2.0.5 Node/v10.4.1',
sessionAttributes: {} }
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questo e' il file che normalmente Lambda passa a Alexa per poi essere trasformato in messaggio vocale ed spedito al dispositivo Alexa
In pratica viene generata l'intent LaunchRequest (event.json) della funzione Lambda che corrisponde a
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const LaunchRequestHandler = {
canHandle(handlerInput) {
return handlerInput.requestEnvelope.request.type === 'LaunchRequest';
},
handle(handlerInput) {
const speechText = 'Hello there. What is your name?';
const repromptText = 'Can you tell me your name?';
return handlerInput.responseBuilder
.speak(speechText)
.reprompt(repromptText)
.withSimpleCard('Example Card Title', "Example card body content.")
.getResponse();
},
};
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