I have problems with the discovery of devices of my Alexa Smart Home skill.
Steps which work:
- activate Alexa skill
- OAuth login screen appears. After successful login, the discovery of devices is triggered
- in the lambda function I get the bearer token which I use to call the .../devices endpoint
- I get the devices from the REST endpoint and construct the payload as described in https://developer.amazon.com/de/docs/smarthome/steps-to-build-a-smart-home-skill.html
- The payload (same structure as in the example) is provided to context.succeed
My problem: After the Alexa Skill returns from discovery of devices task, no new devices are visible in the Alexa Skill.
When I use the code from the sample (where no request to an external Rest API happens), the device is visible in the Alexa skill after the Alexa discovery task.
var https = require('https');
const AWS = require('aws-sdk');
exports.handler = function(request, context) {
var options = {
method: 'GET',
hostname: 'xyz.azurewebsites.net',
path: '/devices',
headers: {
Authorization: 'Bearer ' + request.directive.payload.scope.token,
'Content-Type': 'application/json'
}
};
var req = https.get(options, (response) => {
var data = '';
response.setEncoding('utf8');
response.on('data', function(x) { data += x; } );
response.on('error', console.error);
response.on('end', () => {
var dataObj = JSON.parse(data);
console.log("Retrieved response: " + JSON.stringify(dataObj.items));
const payload = {
"endpoints": []
};
dataObj.items.forEach(item => {
const device = {
"endpointId": item.id,
"manufacturerName": item.manufacturer,
"friendlyName": item.displayName,
"description": item.description,
"displayCategories": ["SWITCH"],
"cookie": {
"key1": "arbitrary key/value pairs for skill to reference this endpoint.",
"key2": "There can be multiple entries",
"key3": "but they should only be used for reference purposes.",
"key4": "This is not a suitable place to maintain current endpoint state."
},
"capabilities":
[
{
"type": "AlexaInterface",
"interface": "Alexa",
"version": "3"
},
{
"interface": "Alexa.PowerController",
"version": "3",
"type": "AlexaInterface",
"properties": {
"supported": [{
"name": "powerState"
}],
"retrievable": true
}
}
]
};
payload.endpoints.push(device);
});
console.log('payload ' + JSON.stringify(payload));
var header = request.directive.header;
header.name = "Discover.Response";
console.log("DEBUG", "Discovery Response: ", JSON.stringify({ header: header, payload: payload }));
//NEXT LINE IS EXECUTED WITHOUT ANY ERROR
context.succeed({ event: { header: header, payload: payload } });
});
});
req.on('error', (e) => {
console.log('problem with request: ' + e.message);
});
};